Fluke 5205A Instruction Manual

is exclusive; The JOHN FLUKE MFG. CO., INC., warrants eact) instrument it manufactures to be free from defects in material and workmanship under normal use and service for the period of 1-yearfrom dateof purchase, This warranty extends only to the original purchaser. This warranty shall not apply to fuses, disposable batteries (rechargeable type batteries are warranted for 90-days), or any product or parts which have been subject to misuse, neglect, accident, or abnormal conditions of operations. In the event of failure of a product covered by this warranty. John Fluke Mfg. Co.. Inc,, will repair and calibrate an instrument returned to an authorized Service Facility within 1 yearof the original purchase; provided the warrantor's examination discloses to its satisfaction that the product was defective. The warrantor may. at its option, replace the product in lieu of repair. With regard to any instrument returned within 1 year of the original purchase, said repairs or replacement will be made without charge. If the failure has been caused by misuse, neglect, accident, or abnormal conditions of operations, repairs will be billed at a nominal cost, In such case, an estimate will be submitted before work is started, if requested. THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES. EXPRESS OR IMPLIED. INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY. FITNESS, OR ADEQUACY FOR ANY PARTICULAR PURPOSE OR USE. JOHN FLUKE MFG. CO., INC.. SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. WHETHER IN CONTRACT, TORT, OR OTHERWISE. if any failure occurs, the foiiowing steps should be taken: 1. Notify the JOHN FLUKE MFG. CO.. INC., or nearest Service facility, giving full details of the difficulty, and include the model number, type number, and serial number. On receipt of this information, service data, or shipping instructions will be forwarded to you. 2. On receipt of the shipping instructions, forward the instrument, transportation prepaid. Repairs will be made at the Service Facility and the instrument returned, transportation prepaid. SHIPPING TO MANUFACTURER FOR REPAIR OR ADJUSTMENT All shipments of JOHN FLUKE MFG. CO., INC., instruments should be made via United Parcel Service or “Best Way'” prepaid. The instrument should be shipped in the original packing carton: or if it is not available, use any suitable container that is rigid and of adequate size. If a substitute container is used, the instrument should be wrapped in paper and surrounded with at least four inches of excelsior or similar shock-absorbing material. CLAIM FOR DAMAGE IN SHIPMENT TO ORIGINAL PURCHASER The instrument shoulo be thoroughly inspected immediately upon original delivery to purchaser. All materia! in the container should be checked against the enclosed packing list. The manufacturer will not be responsible for shortages against the packing sheet unless notified immediately. If the instrument is damaged in any way, aciaim should be filed with the carrier immediately. (To obtain a quotation to repair shipment damage, contact the nearest Fluke Technical Center.) Final claim and negotiations with the carrier must be completed by the customer. The JOHN FLUKE MFG. CO,, INC, will be happy to answer ail applications or use questions, which will enhance your use of this instrument. Please address your requests or correspondence to: JOHN FLUKE MFG. CO,. INC., P.0, BOX 09090, EVERETT, WASHINGTON 98206. ATTN; Sales Dept. For European Customers: Fluke (Holland) B.V..P.O. Box 5053. 5004 EB. Tilburg, The Netherlands. •For European customers. Air Freight prepaid. John Fluke Mfg. Co., Inc., P.O. Box C9090, Everett, Washington 98206 Rev. 6/81

AVOID CONTACT WITH EITHER LIVE CONDUCTOR OR VICTIM’S BODY. Shut off high uoltoge of once and ground circuit. If high voltage cannot be turned off quickly, ground circuit. An ax with o dry wooden handle moy be used to cot high voltage line. Use extreme caution to avoid resulting electric flash. If circuit connot be broken or grounded, use o dry board, dry clothing, or other nonconductor to free the victim. ' NEVER ACCEPT ORDINARY AND GENERAL TESTS FOR DEATH Symptoms of electric shock may include unconsciousness, failure to breathe stiffness, as well as severe burns. WHENEVER VICTIM IS NOT BREATHING PROPERLY, GIVE ARTIFICIAL RESPIRATION START ARTIFICAL RESPIRATION IMMEDIATELY. Perform artificial respiration ot scene of accident, unless victim’s or operator's life is endongered. IN THIS CASE ONLY, remove victim to safe location nearby. If new location is more than a few feet away, give artificial respirotion while victim is being moved. artificiol respiration, continue without loss of rhythm for at leost FOUR HOURS, or until victim is breothlng without help. If you hove to change operotors while giving ortificiol respiration, do so without losing rhythm of respiration. Be prepored to resume ortificiol respiration, os he may stop breathing agoin. COMPLETELY CONSCIOUS, give him a stimulant (NOT AN ALCOHOLIC DRINK) such os o teaspoonful of aromatic spirits of ammonio in o small gloss of water, hot coffee, or hot tea. Keep victim wcrm and lying down until he has been conscious for at least fifteen minutes.

CLEAR THROAT Turn head to one side and quickly wipe out any fluid, mucus, or foreign body from mouth and throat with fingers. OPEN AIR PASSAGE Tilt heod back and extend neck to open air passage. LIFT JAW FORWARD Place thumb in victim's mouth and grasp jaw firmly. Lift jew forward to pui! tongue out of air passage. Do not attempt to held or depress tongue. PINCH NOSTRILS CLOSED With other hand pinch nostrils closed to prevent air leak. FORM TIGHT SEAL WITH LIPS Rescuer’s wide-open mouth completely surrounds and seals open mouth of victim. This is not a kissing or puckered position — mouth of rescuer must be wide-open. BLOW Exhale firmly into victim's mouth until chest is seen to lift, ihis can be seen by rescuer without difficulty. REMOVE MOUTH AND INHALE During this time, rescuer can hear and feel escape for air from lungs. Readjust position if air dees not flow freely in and out of victim’s lungs. Continue at a rate of 12 to 20 times per minute. Breothing should be normal in rate with only moderate increase in volume, so that rescue breathing can be continued for long periods without fatigue. Do not breothe too forcibly or too large a volume if victim is an infont or small child. t viii

1-1. INTRODUCTION 1-2. The Model 5205A decision Power Amplifier is a dc coupled, broad band inverting amplifier with a set gain of 1(X). The 5205A may be used in combination with the 5200A AC Calibrator for a combined output ranging from 100 (100.000) to 1 100 (1100.000) volts rms at frequencies up to 100 kHz. When the 5205A is operating as an inde- pendent amplifier ac voltages from OV to llOOV rms at currents up to 200 mA rms may be obtained. The waveforms may vaiy from a large amplitude sinusoidal to complex waveforms of DC, however, peak voltage specifications limit the output to 1500 volts, DC vol- tages from zero to 1500 volts may be obtained at cur- rent levels of 100 mA 1-3. Control of the 5205A can be exercised either manually from the front panel controls or by remote programming. Remote connectors for the 5200A and a customer supplied control source are provided on the rear panel. Connection of the Model 5200A AC Cali- brator with the supplied factory cable provides all the analog signal and remote programming data required. 1-4. The amplifier output cable and the input for independent operations are installed on the front panel. Both may be installed on the rear panel for system op- erations if desired as option —07. The standard output cable is a permanently attached, three foot long, four wire, low capacitance cable which allows remote sens- ing, hi^ output current and hi^ frequency operation. 1-5. Equipment protection is provided by the Fault and the Overload circuits. Activating the fault circuit automatically reverts the unit to the Standby mode and removes any voltage present from the output. Faults can originate from procedureal errors or equipment fail- ure. A fault due to procedural error can be removed by resetting the systems and performing the restarting procedure. An overload error can be corrected by re- moving the overload from the circuit. Return to oper- ate will occur automatically when the overload is re- moved, unless the overload is accompanied by a fault. In this case, power must be removed and restored to remove the indications. 1-1

volt range wth the 5205A and its supplied interface caWe. Re- fer to the 5200A data sheet for other voltage ranges, frequen- cy accuracies and slew rates. OUTPUT VOLTAGE RANGE 100V to 1099.999V rms FREQUENCY RANGE DC to 100 kHz. {120 kHz typical} RESOLUTION 1 mV AMPLITUDE ACCURACY {For 90 day, 23'*C ±5®C, after 1 hour warmup) (Maximum Load - zero to full load) 1000V Range {X% of setting + Y% of Range) 10 Hz to 30 Hz 30 Hz to 20 kHz 20 kHz to 50 kHz 50 kHz to 100 kHz (0.12 + 0.005) (0.04 + 0.002) (0.08 + 0.005) (0.10 + 0 .01 ) AMPLITUDE LIMITS WITH TEMPERATURE (0®C to 18®C and 28"C to 50® C) Add ±(0.035 X Accuracy) per °C to the stated accuracy limits. SHORTTERM AMPLITUDE STABILITY The random change in rms value will be less than (0.0007% of setting +0.0005% of range) pk-pk for the 1 kHz thru 100 kHz ranges and 0.0)5% pk-pk of range for the 100 Hz range over a 1 0 minute interval with constant line, load and temperature i«ing an rms responding meter. (Fluke 931B or ecpjivalent.) LONG TERM AMPLITUDE STABILITY (At Constant Line, Load and Temperature) 24 Hours Six Months 10 Hz to 20 kHz 0.01%j3f setting 0:02% of setting 20 kHz to 1 00 kHz 0.02% of setting 0.04% of setting MAXIMUM CAPACITIVE LOAD 1500 pF (Not to exceed rated Load Current) (170 mA allows 270 pF at 1000V/100 kHz) OVERLOAD PROTECTION Overload Limit protects against inpxjt noise spikes and mo- mentary output overloads. Overload Trip protects against input overdrive conditions, steady state output overloads and short circuits. 1-8. Amplifier (Local/Remote) Mode MAXIMUM OUTPUT VOLTAGE (Under any rated line and load condition) DC + 1500V dc AC 1100V rms FREQUENCY RANGE DC to 100 kHz (120 kHz typical) GAIN XI 00 (Inverting) GAIN ACCURACY (For 90 days, 23®C ±5®C, after 1 hour warmup) Maximum Load DC to 20 kHz 20 kHz to (Or Greater) 100 kHz 500S2//100 pF ±0.05% ±0.2% 5000^2// 100 pF ±0.05%* ±0.15% 1 MO,/ / 200 pF ±0.05% ±0.2% 1 ma/ / 500 pF ±0.06% ±0.4% 1 MS2//1000pF ±0.08% ±0.8% 1 MJ2// 1500pF ±0.1% ±1 .2% *±0.04%, DC to 10 kHz GAIN ACCURACY LIMITS WITH TEMPERATURE (0®C to 18®C and 28®C to 50®) DC to 20 kHz Add ±(0.03 X accuracy) per ®C to the stated accuracy limits 20 kHz to 100 kHz Add ±(0.06 X accuracy) per “C to the stated accuracy limits. GAIN STABILITY (23®C±5®C, after 1 hour warmup) Max. 24 Six Capacitive Hours Months Load DC to 20 kHz 1500 pF 0.03% 0.06% 20 kHz to 100 kHz 100 pF 0.08% 0.2% 20 kHz to 100 kHz 1500 pF 0.4% 0.8% MAXIMUM CAPACITIVE LOAD 1500 pF (Not to exceed rated Load Current) (170 mA allows 270 pF at KK30V/100 kHz) MAXIMUM SLEW RATES (Greater than 1000V output swing) Maximum Load Maximum Input Maximum Output Slew Rate* Slew Rate 200 mA Resistive 8.0V/usec 800V/usec 100 pF Capacitive 8.0V/usec 800V/usec 200 pF Capacitive 5.0V/usec 500V/usec 1-2

3.0V/usec 300V/usec 1000 pF Capacitive 2.0V/usec 200V/usec 1500 pF Capacitive I.OV/usec lOOV/usec * Faster rates may trigger overload protection circuitry. MAXIMUM OUTPUT OVERSHOOT Less than 4% of amplitude with less than maximum input slew rate and with greater than 1000V output swing. INPUT IMPEDANCE 10 kf2 In parallel with less than 1 20 pF INPUT CONNECTOR BNC connector located on front panel. (Located on rear panel with option 07) MAXIMUM INPUT VOLTAGE 50V dc or rms INPUT BIAS CURRENT 100 nA, maximum OVERLOAD PROTECTION Overload Limit protects against input noise spikes and momentary output overloads. Overload Trip protects against inpnjt overdrive conditions, steady state output overloads and short circuits. 1-9. General MAXIMUM LOAD CURRENT MAXIMUM LO«3 CURRENT SOK Outv Cysif >ulK (& mA Mk) 200 mA / 170 mA , // // / / Ciweitivi 100 mA • 70 mA • y Sim W**t ImA /mil / &C 100H? 70kHt 100kH» Bipolar Symmetrical wave form (See Graph above) Unipolar Rectangular waveform (Referenced to zero volts) Linearly derating to: ±100 mA peak Pulse width greater than 50 msed period less than 100 msec. Under all circumstances, the output current capability is at least±100 mA peak DC OFFSET VOLTAGE (For 90 days, 23°C±5"C, after 1 hour warmup) ±10 mV at the output DC OFFSET VOLTAGE LIMITS WITH TEMPERATURE (0°C to 18°C and.28®C to 50® C) + 1 .0 mV/® C at the output TOTAL HARMONIC DISTORTION (Bandwidth 10 Hz to 1MHz) (Resistive loads greater than 1 .5Kf2 or Capacitive loads less liian 1000 pF) 10 Hz to 20 kHz (0.05% of setting) 20 kHz to 50 kHz (0.07% of setting) 50 kHz to 100 kHz (0.1% of setting) (Resistive loads less than 1 .5X^2 or Capacitive loads greater than 1000 pF) lOHzto 10kHz (0.05% of setting) 10 kHz to 20 kHz (0.1% of setting) 20 kHz to 50 kHz (0.17% of setting) 50 kHz to 1 00 kHz (0.25% of setting) RANDOM NOISE (1 MHz bandwidth) Less than 100 mV rms LINE RELATED NOISE Less than 50 mV rms LINE REGULATION ±0.001 % of setting for 1 0% change in line voltage INPUT POWER 100, 115, 200, 230V ac±10%, internal jumper selected, 50 to 60 Hz. Receptacle on rear panel for 5200A input power. INPUT LINE CURRENT The United States National Electrical Code requires that the two lines cords on the 5205A, under full load conditions, be connected to a 20A rated branch circuit with 15A rated re- ceptacles. For international use, refer to local standards. Une currents are as listed below: ±200 mA peak pulse width less than 5 msec period greater than 10 msec. 1-3

(At Full Load) 1«)V 115V 200V 230V Control Supply Cord 50 Hz 2.0A 1.8A 1.0A 0.9A (Amp rms) 60 Hz 1.9A 1.6A 1.0A 0.8A High Voltage Supply Cord 50 Hz 14.5A 12.4A 7.2A 7.1A 60 Hz 13.9A 12.0A 6.9A 6.6A MAXIMUM ISOLATION VOLTAGE Output common may be floated up to±10V dc or rms from chassis to reduce common mode errors. DIMENSIONS (Case onty} 1072” (267 mm) H x 17” (432 mm) W x 24.68” (627 mm) D WEIGHT 120 pounds (54.5 kg) EXTENDED USAGE The 5205A will typically provide the following extended output voltages and frequencies when the line voltage is kept at the nominal value or above: 1) 1200V rms up to 120 kHz with 100 mA output current capability. 2) ±1600Vdcpeak OUTPUT CABLE Extends three feet beyond the front panel. Special cable is used to provicte remote sensing at the covered ckial banana f^ug (with spacing) at the end of the cable. A storage receptacle is located on the front panel to hold the output cable safely v#ien not in use. Option 07 routes the cable out two feet beyond the rear panel. LOCAL/REMOTE-5200A OPERATION A two position switch, interlocked with either remote pro- gramming function (see programming section below) or manual programming. In the LOCAL mode, the operate control is implemented from the front panel. In REMOTE, control is obtained via the 5200A (Manual or Remote Mode) or via the remote Input on the rear panel of the 5205A. Three LED indicator lamps indicate which of the three pos- sible controlling sources is in control (LOCAL, REMOTE or 5200A.) SAFETY FEATURES When the ac power is turned on, the amplifier is automatic- ally set to the Standby condition and a 114 by Vz inch red arrow (lightning bolt) is illuminated to indicate that poten- tially dangerous output voltages could be present due to re- mote programming inputs. When output voltage is command- ed by one of the three possible control scairces, a 14 by 1 inch red "OPERATE” lamp is illuminated. The 5205A cannot be commanded simultaneously by more than one source. When more than one of the three possible controlling sources calls the 5205A at the same time, the 5205A is returned to Standby and the LED "FAULT” lamp is illuminated. Two step turn-on is provided for ail three possible control- ling sources. a. Calling the 1000 volt range from the 5200A (local or remote modes) causes the 5200A to return to Standby. After a 10 millisecond delay, the 5200A operate command can then be initiated to provide an output voltage from the 5205A. b. Calling the 5205A from its remote input requires two commands, 10 milliseconds apart. One is the Remote Control Command followed by the Remote 0|:»rate Command. c. Calling the 5205A from its Local Mode requires the LOCAL/REMOTE-5200A Switch to be in tfie local position, the Standby/OPERATE switch to be in the STANDBY positicMi and then to be switched to the OPERATE position. The 5205A meets the safety requirements of lEC 348. CALIBRATION REQUIREMENTS The 5205A is calibrated at the factory by instrumentation traceable to the National Bureau of Standards. Periodic cali- bration of the 5205A's Calibrator Mode may be accomplished through the use of an RMS differential voltmeter (Fluke 931B) For calibrating the Amplifier Mode, a DVM such as the Fluke 8800A can be used with the equipment listed above. Ail other adjustments can be made with general purpose laboratory equipment. 1-4

Air enters through a re-usable filter on the rear panel. Air exits upward from the rear pane! and along both sides {Main rear panel outlet may be redirected to the right side at the rear of the instrument.) TEMPERATURE 0®C to +50“C operating —40®C to +75“ C storage RELATIVE HUMIDITY 0 to 80 percent (0®C to +40“C) 0 to 70 percent {+40“C to +50*C) SHOCK 15 g., 11 millisecond half-sine wave pane! controls or through the 5200A's remote programming input. The 5205A is supplied with a two-foot 5200A/5205A inter- face cable which will allow die 5205A to sit on either side of the 5200A or on top of the 5200A. it is not recommend- ed to put the 5205A below the 5200A due to the upward warm air discharge AMPLIFIER MODE PROGRAMMING There is a photo-isolated remote control input located on the rear panel of the 5205A. This input allows an external remote controlling source to control the Amplifier Mode of the 5205A. The mating connector is supplied with the 5205A. Programming Safety is covered in the Safety Fea- tures section above. The following table shows the pin con- nection and drive requirements or drive capability. VIBRATION 3.1 g, 10 Hz to 55 Hz PIN NUMBER FUNCTION DRIVE REQUIRE- MENTS/CAPABILITY ALTITUDE 0 to 10,000 feet (3048 meters) operating (Above 7000 ft. (21 34 meters) when using 50 Hz line power derate maxi- mum output current by 40%) S),000 feet ( 1 5240 meters) non-operating. 1-11. Remote Programming The 5205A is ecjjipped so that it can be remotely controlled from either the 5200A Calibrator or some other remote source. CALIBRATOR MODE PROGRAMMING 4 Remote Control Command 8 Remote Operate Command 7 Remote Status Flag 1 Overload Flag 6 +5 Volts Input 9 Logic Common 2 Digital Guard 1 6 mA drive 16 mA drive 1.6 mA sink; lOkH pull-up 1.6 mA sink; 10 kO puil-up Requires 50 mA (max.) N/A N/A Using the 5200A with the 5205A allows the 5200A to pro- The Remote Commands and Remote Flags are negative true gram the 5205A either manually from the 5200A's front logic. 1-5/1 -6

IC’s can be damaged by electrostatic discharge during handling. This notice explains how you can minimize the chances of destroying such devices by: 1- Knowing that there is a problem. 2- Learning the guidelines for handling them. 3. Using the procedures, and packaging and bench techniques that are recommended. The Static Sensitive (S.S.) devices are identified in the Fluke technical manual parts list with the symbol i The following practices should be followed to minimize damage to S.S. devices. 2. KEEP PARTS IN ORIGINAL CONTAINERS UNTIL READY FOR USE. 4. HANDLE S.S. DEVICES BY THE BODY Page 1 of 2

IRONS SHOULD BE USED. AVOID PLASTIC. VINYL AND STYROFOAM® IN WORK AREA PORTIONS REPRINTED WITH PERMISSION FROM TEKTRONIX, INC. AND GENERAL DYNAMICS. POMONA DIV. * Dow Cbefnicai Page 2 of 2 PN 784413 January 1993

for correct operation of the Model 5205A. Should any dif- ficulties be encountered during operation, please contact the nearest John Fluke Sales Representative or the John Fluke Mfg. Co., Inc. A complete list of Sales Represen- tatives is located at the rear of this manual. 2-3. SHIPPING INFORMATION 2-4 . The Model 5205A was packaged and shipped in a foam packed cardboard carton. Upon receipt, a thor- ough inspection should be performed to reveal any dam- a^ in transit. Special instructions for inspection and claims are included in the carton. 2-5. If reshipment is necessary, the original container should be used. If it is not available, a new container can be obtained from the John Fluke Mfg. Co., Inc. Hease reference the Model number when requesting a new container. 2-6. INPUT POWER 2-7. The power amplifier can be operated from either a 100, 115, 200 or 230V ac 50 or 60 Hz power line. A jumper system on the power supply section allows selection of the appropriate line voltage. Select the proper jumper and fuse combination for the local line voltage using the follow- ing procedure: a. Verify that neither line cord is connected to a power source. b. Remove the top dust cover and left inner cover from the instrument. c. Locate the input power terminal strips shown in Figure 2-1. The layout is also shown on the trans- former cover. d. Connect the jumpers as shown in Figure 2-1 and Table 2-1. e. Replace the iimer dust cover. f. Install 15 and 5 amp fiises if the 100 or 1 1 5 volt input line voltage has been selected or 8 and 2 amp fiises if the 200 or 230 volt input has been selected. 2-8. INSTALLATION 2-9. The power amplifier is designed for bench-top use or it can be installed in a standard 19 inch equipment rack with mounting brackets. Rack mounting is done as follows: a. Remove the vertical decals from the sides of the two front handle castings. b. Remove the screws from the front comer cast- ings which match the hole patterns in the rack mounting brackets. c. Attach the rack mounting brackets to the corner castings with No. 8-32 PHP screws. 2-10. OPERATING MODES 2-1 1 . The 5205A can operate in any one of three modes; local, remote or calibrator. Each of the modes are defined in the following paragraphs. 2-1

JUMPER CONNECTIONS LINE HV POWER VOLTAGE JUMPER JUMPER JUMPER 100 1 to 4 2 to 5 5 to 7 115 1 to 4 3 to 6 6 to 7 200 2 to 4 5 to 7 7 to 7 230 3 to 4 6 to 7 7 to 7 AUX POWER 100 11 to 14 12to 15 15 to 17 115 11 to 14 13tol6 16to 17 200 12to 14 15 to 17 17 to 17 230 13to 14 16 to 17 17to 17 2-12. Local iVlode 2-13- The 5205A operates as an independent stand alone inverting amplifier with a fixed gain of XI 00. The instru- ment is controlled and the status monitored from the front panel, and any signal input will be amplified 100 times, with- in specification limits. 2-14. Remote IVlode 2-15. In the Remote mode the 5205A still operates as an independent XI 00 amplifier. However, operation is now controlled, and the status monitored, through a remote con- nector on the instrument’s rear panel. 2-16. Calibrator Mode 2-17. In the Calibrator Mode the 5205A is controlled from the 5200A AC Calibrator, either from the 5200A front panel or indirectly throu^ the 5200A Remote Con- trol Unit. The output is the voltage selected by the 5200A on the 1000 volt range. The output sensing signal is returned to the 5200A for maximum overall accuracy. 2-18. OPERATING FEATURES 2-19.. The location and function of ail front panel con- trols, connectors, and indicators are shown and described in Figure 2-2, and Table 2-2. The rear panel connectors and fixtures are shown and describedin Figure 2-3 andTable 2-3. 2-20. OPERATING NOTES 2-21. AC Line Connections 2-22. Power is input to the unit on two separate lines. One line provides power to the high voltage system while the other supplies the auxiliary power system. Each input line is individually fused. The voltage is selectable, as pre- vioudy described and the input frequency may be either 50 or 60 Hz. Both input power cords have three prong, polarized plugs. The round pin on the plu^ connect the chassis to earth ground, therefore ensure that it is connect- ed to a high quality earth ground. 2-23. The 5205A requires a significant amount of line power. Table 2-4 contains the RMS line currents under full load conditions as controlled by line voltage setting and input frequency. The requirements for both the hi^ voltage and auxiliary power line cords are listed. The high voltage line cord is rated at 18 amps. 2-2

REF NO. NAME FUNCTION 1 POWER Switch Applies line voltage to the Auxiliary (AUX) power supplies. After approximately 30 seconds power is applied to the High Voltage (HV) supply. 2 CONTROL Switch Selects between Local and Remote operation. Status Is shown by associated indicators. 3 LOCAL Indicator Illuminated when the power amplifier is operating in the local mode, i.e., controlled from the front panel. 4 REMOTE indicator Illuminated when the remote mode control line is active. The power amplifier is controlled in this condition from a customer supplied control device. ; 5 5200 Indicator Illuminated when the 5200A is in the 1000 volt range to con- trol operation of the instrument. 6 WARM-UP Indicator ; Illuminated for approximately 30 seconds after the POWER switch has been turned ON. This allows the Power Amplifier time to heat the tube filaments prior to applying high voltage to the system. 7 MODE Switch Selects the mode of operation, STDBY or OPERATE. Resets the system after a fault when returned to STDBY from OPERATE. This switch is active only in the Lcwal Mode of operation. 8 STDBY-RESET Indicator Illuminated when the Standby or Reset fault Mode has been selected. 9 OPERATE Indicator Illuminated when the Operate mode has been selected. 10 FAULT Indicator Illuminated when a fault occurs in the system. A procedural or minor fault may be corrected and the indicator extinguished by returning the unit to the Reset Fault mode. This can be accomp- lished by setting the MODE switch to the STDBY-RESET posi- tion and back to the OPERATE position, on the front panel in the local mode, removing and then re-applying the operate com- mand in the remote mode or returning the 5200A mode to stand- by and then back to operate, either from the 5200A front panel or the RCU, in the Calibrator Mode. 11 OVERLOAD Indicator Illuminated v\^en an overload is placed on the power amplifier. To extinguish, power must be removed and reapplied. If accom- panied by the fault indication, there is a fault condition which must be reset by turning power OFF and ON. 12 INSTRUMENT ON Indicator illuminated when the POWER switch is turned ON. Warns that dangerous High Voltages are present in the unit and may be present at the output terminals. 2-3

INPUT Terminal BNC connector for the input signal when operating in the Stand Along mode of operation. OUTPUT LOW Terminal Provides a front panel connection for OUTPUT LOW. The maximum allowable differential between Output LOW and chassis is 10 V ac rms, the maximum continuous current 50 ma, peaking at 5A for 1 0 milliseconds. CHASSIS GROUND Terminal OUTPUT Terminals Provides a front panel connection for chassis ground. Permanently attached 4-wire output cable, 3 feet in length. The Output HI and Sense HI wires are connected at the HI Terminal of the outfXJt connector. The Output LO and Sense LO wires are connected at the LO terminal of the output connector. This configuration provides the minimum capacitance required at High frequencies. Cable Storage This storage area is provided as a safety feature. When the output cable is not in use, the output terminals can be inserted into the internal connectors. 2-4

REF NO. 1 FUNCTION " 1 : i i 1 i i ; Optional Output Terminals This filler plug is removed and the output cable exists from this point if the -07 Option is installed. This option repositions the inpLit/Output connectors to the rear panel for system use. i 2 s 1 Auxiliary Power Line and Fuse The permanently attached. No. 1 6 AWG wire, three-prong power cord supplies the line voltage to the auxiliary power supplies and 5200A power through F2, a 5 amp Slo-B!o fuse. ! 3 1 High Voltage Power Line and Fuse The permanently attached. No. 14 AWG wire, three-prong power cord supplies the line voltage to the High Voltage Power Supply through FI, a 15 amp Slo-Blo fuse. 1 ^ i 1 Convenience Outlet The power available at the convience outlet is taken directly from the auxiliary power line input. It is a standard American style 3 prong connector. 1 i ^ i 1 Optional Input Connector This filter plug is removed and the input BNC connector is in- stalled at this point if the —07 Option is installed. This option repositions the input/Output connectors to the rear panel for system use. 6 Remote 9-Pin Connector Input for Remote Controls from a customer supplied device during Remote Mode operations. 7 5200A 25-Pin Connector Input for signal and controls from the 5200A when operating in calibrator mode. i 8 Air Intake and Filter Washable filter to clean air used to cool the unit. 9 Air Outlet Shield directs flow of air exhaust. Normally, exhausted air is directed upward, however, the shield can be removed and reposi- tioned to direct the air flow to the right of the instrument, if this path of flow is obstructed in some manner. It should not be positioned to the left toward the air intake or downwards. 2-24. The operator must verify that local and/or national standards for outlet receptable and branch circuit are met. For example: In the United States a 20A rated branch cir- cuit is required for a 115V ac 60 Bz source. The 5205A connectors are rated at 15A and can be plugged into either a 15A or 20A rated outlet. 2-25. Input Connectors 2-26. Control of the 5205A in the Remote or Calibrator Modes of operation is from one of two connectors on the rear panel. When operating with a 5200A in the Calibrator mode both input signal and controls are made through a 25-pin connector. Controls when operating in the Remote mode are input on a 9-pin connector from a customer supplied control device. 2-27. When operating independently in either the Local or Remote Mode the signal for amplification is input at a BNC connector on the front panel. As part of the —07 Op- tion, this connector can be placed on the rear panel for system operations. 2-28. Output Connections 2-29. The output cable is permanently attached to the unit at the front panel. As part of the -07 Option, it can be attached at the rear panel for system operation. The 3- foot long, four-wire, low capacitance cable has a hooded protective cover for operator safety. Selection of the —07 Option for a rear connector reduces the length of the out- put cable to two feet. Remote sensing is accomplished by 2-6

and sense LO lines inside the sealed protective cover. Tabie2-4. INPUT LINE CURRENTS SUPPLY INPUT FRSa INPUT VOLTAGE 100 115 200 230 HV 60 H2 13.9 12 6.9 6.6 AUX 60 Hz 1.9 1.6 1 0.8 HV 50 Hz 14.5 12.4 7.2 7.1 AUX SO Hz 2 1.8 1 0.9 2-30. Output Capabiiities 2-31. The 5205A can deliver up to 100 mA dc and 200 mA rms ac. Attempts to draw currents in excess of these amounts result in an overload which removes the output and causes the amplifier to either retry its programmed out- put or to return to standby. Before using the 5205A as a source, insure that the recipient unit does not load the amp- lifier in excess of these limits. 2-32. Ground Connection 2-33. If desired, the amplifier OUTPUT LOW can be grounded to the chassis at the front panel by connecting a shorting link between the two terminals. The chassis ground is coimected to an earth ground throu^ the line cords, provided the ac line cord is properly grounded. If floating the amplifier output above ground is desired, when the load cannot be disconnected from the earth ground, remove the shorting link from between the two front panel terminals and connect the OUTPUT LOW ter- minal to the earth ground on the load. The maximum allow- able differential between OUTPUT LOW and chassis ground is lOV ac rms. CAUTION! The OUTPUT LOW terminal of the 5205A should never be left floating during operation. If the strap between OUTPUT LOW and CHASSIS GROUND is not present, then verify that through the output cable and the load, a connection with CHASSIS GROUND is present. 2-34. Local Mode Operation 2-35. Operating in the Local Mode, the 5205A Power Amplifier will amplify and invert any signal input, (ac, dc, or complex) with a gain of 100. Use the following proce- dure for operation in the Local Mode. 2-8 a. Insure the CONTROL and MODE switches are in the LOCAL and STDBY-RESET positions respectively. b. Connect the source to be amplified to the input connector. c. Insure the POWER switch is ON. The INSTRU- MENT ON and LOCAL indicators are illuminated. NOTE The WARMUP Indicator is illuminated at initial power application and stays on for approximate- ly 30 seconds. d. The STDBY-RESET Indicator is illuminated when the WARMUP indicator goes off. e. Set the MODE switch to OPERATE. f. The OPERATE indicator is illuminated. g. The signal input is present at the output terminals with a gain of 100. 2-36. The system will not accept controls from two sources simultaneously, therefore, if a 5200A is connected while operating independently, in the Local or Remote Mode, and the 1000 volt range is elected, a fault will result. The fault can be removed and the indicator extinguidied by removing the command from the 5200A and setting the MODE switch on the 5205A to STDBY-RESET and then OPERATE. 2-37. System or Combined Operations 2-38. While in the Calibrator Mode the 5205A can be directly combined with a 5200A for operation, or through a Remote Control Unit (RCU) controlled by a computer test system. In the Remote Mode control is through a customer supplied device which may be either manually operated or a computer in a test system 2-39. Calibrator Mode Operation NOTE Duringcombined operations, the 5200A should not be positioned on top of the 5205A. Over- heating can result when the 5200A intakes dis- charged air ofthe 5205A. Also, transformer coupling may result at line related frequencies. 2-40, 5200A LOCAL OPERATION 2-41. Once the 5205A is prepared for operation, i.e., the 5200 Control Cable connected, the POWER switch is

the 5200A in the lOOOV range, control of the 5205A rests with the 5200A. The following procedure can be followed to operate in the calibrator mode: a. Connect the control cable between the J32-5205 connector on the 5200A and the 5200A Remote Connector on the rear panel of the 5205A. b. Set the CONTROL switch to the REM 5200 position. c. Set the POWER switch to the ON position. d. The INSTRUMENT ON, 5200 and WARMUP Indicators are illuminated. e. After a delay of approximately 30 seconds the STDBY indicator is illuminated and the WARMUP indicator extinguished. f. Select the desired amplitude (1 lOOV rms max) and frequency (100 kHz max) on the 5200A front panel. g. Set the 5200A mode switch to OPERATE. h. The OPER indicator on the 5200A and the OPER- ATE indicator on the 5205A iUuminate. The STDBY indicator on the 5200A and the STDBY- RESET indicator on the 5205A are extinguished. The voltage selected on the voltage dials (100 to 1 100 volts) is present at die output connector. NOTE In case ofa fault, the 5205A wUl return to STDB Y. The 5200A mil still be in the OPERATE mode, althou^ the indicator will show STANDS Y. Re- set the fault by turning the STDBY-OP switch on the 5200A front panel to the STDBY positio?t 242. 5200A REMOTE OPERATION NOTE For operation of the 5200A Remote Control Unit (RCU) see Section 6 of the 5200A manual. 243. When the 5200A is controlled by an RCU during Calibrator Mode Operation, the timing of the Range Select and Operate commands becomes critical. Two separate transfers, separated by at least 10 milliseconds, are required to obtain proper operation of the 5205A. Use the follow- ing format for the two transfers. a. First transfer command diould include: 1000 Volt range Standby Any other controls and setting desired. b. Second transfer command should include: 1000 Volt range Operate A repeat of any other controls and setting in tlw first transfer command. NOTE At least ten milliseconds must elapse between the two transfer commands. The READY STATUS Rag may be used for timing between the two transfer commands or ignored 244. Changes in settings and controls, including stand- by and Operate are accepted in one transfer by the RCU as long as the lOOOV Range is included. The RCU Ready flag delay varies with the selected frequency of the 5200A due to settling time within the instrument. If the flag is to be used for timing, check the 5200A manual for those specifications. 245. CAUBRATOR MODE FAULT INDICATIONS 246. The 5205A cannot be in two states simultaneously. If the CONTROL switch is placed in the LOCAL position while the unit is under control of the 5200, a fault will re- sult. Remove the fault and extinguish the indicator with the following procedure: a. Return to the Local Mode. Take the 5200A out of the 1000 volt range and proceed with the Local Mode operation instmctions. b. Return to the Calibrator Mode. Return the 5205A CONTROL switch to the REM-5200 position and set the 5200A MODE switch to STDBY for at least 10m seconds and then to ORER to reset the system. 247. Remote Mode Operation 248. The 5205A can be oeprated as an independent am- plifier remotely from a customer supplied control device. Controls are input from the control device through the 9-pin connector on the rear panel. The pins on which the individual commands must be placed are listed in Table 2-5. The signal to be amplified is input through the BNC Con- nector on the front panel. Use the following procedure for remote operations; 2-9

PIN NO. ASSIGNMENT FUNCTION 1 OVERLOAD Provides overload signal to control device LO logic output to cover load true. 2 Remote Digital Guard Connects the control unit guard through the shield of the logic pcb wiring to the photo-isolators in the 5205A Remote Interface. 3 No connection 4 Remote Control Control signal is supplied by control device. LO iogic input for active 5 No connection 6 +5 Volts Logic voltage supplied by the control device 35 ma maximum current. 7 Remote Status Status of the 5205A returned to the control device. LO iogic output when remote and operate active. o Remote Operate Operate command supplied by the Control device. LO logic input for operate, HI for standby. 9 Return Logic return supplied by the control device. a. Connect the Control device and input si^al cables to the 5205 A. b. Set the POWER switch to ON and the CONTROL switch to REM-5200A. c. The INSTRUMENT ON, REM and WARMUP indi- cators flluminate, provided the control device has an active control line. d. After a 30 second delay the STDBY-RESET indica- tor illummates and the WARMUP indicator extin- guishes. e. Tne 5205A is now ready for operation with control from the remote device. f. Issue an Operate Command through the Remote Control device. g. The OPERATE indicator illuminates and the STDBY-RESET indicator is extinguidied. The sig- nal input is present at the output terminals with a gain of XI 00. h. A status signal will be avahabie to the Remote Con- trol Device approximately 20 m seconds after the 5205A has reached the operate state. 2-49. If the 5200A is connected during independent re- mote operations and the 1000 volt range is selected for operations, a fault will result. To clear the fault and extin- guish the indicator, remove the input from the 5200A and with the remote control device, remove the operate com- mand and after at least 5 msec issue a new operate command. 2-50. Operate Fault 2-51. In addition to the fault resulting from two com- mand simultaneously already discussed, a fault will result from an invalid Operate command. If the MODE switch is set to the OPERATE position prior to the expiration of the warmup period the FAULT indicator will illuminate. Gear the fault and extinguish the indicator by returning the MODE switch to STDBY-RESET and then after the WARMUP indicator has extingiushed, return the MODE svwtch to OPERATE. 2-52. Equipment Faults 2-53. Fault indications also result from internal instru- ment failures, such as; no cooling, severe overloading of the high vdtage power supplies or hi^ voltage present during the warmup period. This type of fault dismpts the amplifier loop causing the OVERLOAD indicator to illumi- nate in addition to the FAULT indicator. Returning the 2-10

ERATE. If connected to the 5200A in the Calibrator Mode of fault. Restart the system by turning the POWER switch insure the 5200A is in Standby before starting the restart to OFF, then ON, wait 30 seconds for the WARMUP indi- procedure. If the FAULT and OVERLOAD conditions cator to extinguish and then set the MODE switch to OP- persist, repair of the instrument is required. 2-11

3-1. INTRODUCTION 3-2. This section contains the theory of operation for the Model 5205APrecision Power Amplifier. The theory description is presented first in a simplified block diagram, then a functional block diagram, and then a circuit explan- ation. A complete set of schematic diagrams is contained at the rear of the manual. 3-3. The 5205A Precision Power Amplifier provides Amplification at the fixed gain of minus XlOO to any signal input, up to the specification limits of 1 lOOV ac rms at 100 kHz. 34. SIMPLIFIED BLOCK DIAGRAM DESCRIPTION 3-5. Selection of the operating mode and status is done within the Logic Assembly. When power is applied the Initializing circuit readies the system while the instrument is checked for faults. The signal to be amplified may be applied either from the Front Panel connector (Rear Panel with 07 Option) or from the 5200 connector on the Rear Panel, provided the 5200Ahas the lOOOV range selected. Control may be exercised from either the 5200 A, a Remote device or the Front Panel connections to the Logic Assembly. If more than one input or one control signal is present a fault will be detected. 3-6. Once the input signal is present at the preamplifier the only difference in operation between the 5200 or indepen- dent mode is in the sensing. The signal is amplified in the preamplifier then applied to the power amplifier. The power amplifier is a Class AB push-pull type using two tubes connected in parallel in both the upper and lower portions of the circuit to provide sufficient output current capability. The output is sensed and returned to the preamplifier to con- trol the input, either internally, or in the c^e of an input from the 5200, within that instrument. 3-7. The Power Amplifier is supplied with ±2.5kV and the Preamplifier with -2.5kV. The various low voltage power supplies and regulator within the instrument are supplied from the Auxiliary Supplies. 3-8. Power Supply Assembly 3-9. Line Power is input to the Power Supply Assembly on two different line cords. Power for the high voltage circuits enters on P8 and for the Auxiliary circuits on P9. This allows operation of the Auxiliary circuits while trouble- shooting and/or calibration without the danger of the high voltage circuits. The high volt^e circuits output ±2.5kV 3-1

3-2

Details on the various portions of the high voltage circuit and the auxiliary voltages available are contained in the following sub-paragraphs. 3-10. HIGH VOLTAGE RELAY DRIVER 3-1 1 . Power applied to the instrument cannot reach the High Volt^e Transformer until K1 is energized. P56-8 brings in the control signal from the Logic Assembly. This signal goes low approximately 30 seconds after the POWER switch is set to the ON position. Prior to that time the Optical Isolator U1 has been cutoff, preventing K1 from eneigizing. Once low, U1 conducts, cuts off Q1 , which causes the cur- rent source Q2 to turn on Q3 and energize K1 . Q2 also supplies current to the zener VR5 to provide a regulated 1 lOV to the relay coil, optimizing the dissipation of the relay under varying line voltages. Diodes CRl through CR4 and Cl provide a 1 lOV supply to the relay driver. CAUTION! The Relay Driver circuitry is located on the Primary side of the HV Transformer. Extreme care should be taken when connecting any test instruments to the circuitry. 3-12. POWER AMP±2.5kV SUPPLY 3-13. Operation of both the positive and negative supplies are identical. The positive voltage supplies VI and V2 on the Tube Mounting Assembly while the negative supply goes to V3 and V4 on the Lower Tube Assembly. In both cases the transformer secondary is rectified by a bridge rectifier and then filtered by C 1 1 or C 1 2 . Each Supply has a bleeder assembly connected to provide a discharge path for the filtering capacitor if the Power Amplifier is not connected to the circuit. Discharge takes approximately 30 seconds. Each circuit has a decoupling network conasting of a resistor (R22 and R12) and two diodes (CR25, CR26 and CR17, CRI8). A monitor to the Logic Assembly is pro- vided from each supply 3-14. PREAMP -2.5 kV SUPPLY 3-15. The Preamp supply rectifies the transformer second- ary with CR13 and CRM and then filters it with C13, A bleeder assembly is provided to discharge the filtering cap- acitor to a safe level if the Preamp is not instaEed. Dis- charge takes approximately 30 seconds. This Voltage supplies the ~1.9kV regulator on the Preamp. 3-16. AUXILIARY SUPPLIES 3-17. Line power input on the auxiliary power circuit is tapped to provide an outlet for the 5200A on the rear of the instrument. It also supplies inputs to primary of the Preamplifier Auxiliary Transformer T3, the Power Amplifi- er Auxiliary Transformer T4 and the Low Capacity Trans- former T2. Outputs from the Low Capacity transformer secondary are used on the Power Amplifier. 3-18. Logic PCB Assembly 3-19. When power is applied to the instrument the initializing circuits prepare the circuits for operation. Con- trol is exercised throu^ the operate/control stage, origina- ting at a 5200, a Remote source or within the stage from the Front Panel Controls. Any fault and/or overload will be detected and returned to the operate control stage for appropriate action. The +5 and +28 power required for the logic and relay circuits are generated within the Logic Assembly. 3-20. INITIALIZING CIRCUITRY 3-2 1 . When power is applied to the instrument U42-5 goes high from the Warm-up Delay circuit to disable UI4-10, which prevents the high voltage control relay from energizing, also U2-6 goes low disabling the overload circuitry. At the same time U20-2 goes low to illuminate the Warm-Up in- dicator, disables U43-i3 to prevent a STDBY indication, clears the Operate FF at U41-3 and enables U14-12 so that if high voltage is present it will clear the Trouble FF and generate a fault. The length of the Warm-Up period is controlled by R129/C53 and should be approximately 30 seconds. The Power Up Initialize circuit (R1 3 1 /C54) generates a pulse at Power Up to set the trouble FF. It also, through the fault gate, insures the Operate FF is cleared, so both devices start in a known condition. 3-22. Once the Warm-Up delay period has passed U42-5 goes low, extinguishing the Warm-Up indicator and enabling U43-13 so that the high at U43-12 resulting from clearing the operate FF wiE Eluminate the STDBY indicator. 3-23 . OPERATE/CONTROL 3-24. The operate command can originate from only one of the three possible sources; the front panel, the 5200A inter- face, or the remote interface. The three inputs are wire ORed at U2-3 for the control line and U4-9 for the operate line. Operation from that point on is the same regardless of the signal origin. 3-25. Front Panel 3-26. Setting the control switch to the local position applies a low to the local indicator and sets the set/ reset latch formed by half of UlOhigh at UlO-6. This enables U3-2 for the future operate command and enables U7-4 and U7-12 for dual control error detection. U2-10 is the front panel portion of the wire “ORed” control gate. When the 3-3

panel portion of the wire “ORed” operate gate. 3-27. To control the instrument from the 5200A or remote interface the front panel control switch must be set to remote. The resulting low at UlO-6 disables U3-2, so the front panel mode switch is disabled, and disables U7-4 and U7-12 in the dual control error detection circuit. 3-28. Remote Interface 3-29. A low input at P42-6 from the remote control device activates the optical isolator U33 which in turn illuminates the remote indicator, enables U3-13 for the operate to follow, enables U7-2 for the return status, and pulls the control path low at U2-3. An operate command (P42-2 low) acti- vates the other half of the optical isolator U33 and pulls the operate line low at U3-1 1 , provided the control command had preceded it. 3-30. The U32 optical isolators return the status and overload conditions to the remote control device. Control of the inputs is discussed later. 3-3 1 . 5200 Interface 3-32. This interface operates in basically the same manner as the remote except for a few additions. The control com- mand at P41-6 activates half of U31 for a high at U4-6 which in turn is used to illuminate the 5200A indicator, enable U3-9 for the upcoming operate command, enable U3-5 for the return status, enable U7-10 and U7-5 in the dual con- trol error detection circuit and pulls the control line low at U2-3. The first of the two additional circuits provides a high at Ul-8 and P44-7 after a 33 msec delay for use in the preamplifier. The second uses the low at U8-6 to activate K1 to connect the 5200A guard to sense low in the 5205 A. 3-33. Operate FF 3-34. Once U2-3 has been pulled low by one of the inter- faces, R124/C44 delays the signal 3 to 9 msec. At the end of this delay the Operate FF J Input, U414 goes hi^. The operate command is delayed slightly by R1 21 /C43 and then applied to U41-1 as a low going clock to set the Q output low. This is used to set U5-6 high to return the status from the enabled interface, to extinguish the STDBY indicator, to output a low 5205A OPERATE COMMAND at P44-3, and to turn on Qi and Q2 which iiluminates the OPERATE in- candescent lamps and outputs a low to the power amp at P43-27, 28. The high at the Q output is applied to U43-10 and U14-1 for use in fault detection. 3-35 . If the control line was not high at the Operate FF prior to the arrival of the operate command the flip-flop would not be clocked and a fault would result. Since the delay in the control line appreciably exceeds that of the operate line the control signal in any remote or 5200A operation must precede the operate command by at least 10 milliseconds. 3-36. FAULT DETECTION 3-37. Two types of faults can exist within the system. A major fault requires the removal of power to clear the fault detection system. A minor fault can be cleared by setting the mode switch to STDBY-RESET and then returning it to OPERATE. 3-38. Minor Faults 3-39. A minor fault uses the fault gate output, delayed by R122/C41, to clear the Operate FF, which returns the instrument to standby and illuminates the fault indicator. Minor fault inputs to the fault gate come from U43-8 when the operate FF is set but there is no operate command and from the dual control error detection circuit when two or more control signals are present. Inputs are also supplied from the U21 quad comparator. The output at U21-14 goes low if the -I limit sensor has a current greater than 200mA for a time period determined by R88/C23 . The +I limit sensor goes low at U21-13 when the comparator senses a voltage greater than 2(X)mV. The -fSV limit sensor goes low at U21-1 when the +5 volt supply drops to 4.5 volts. 340. The absence of the NEG HV signal at P44-1 from the preamp applies a low at U154 which clears the Operate FF, after the delay of RI22/C41. The resulting low at U14-I is combined with the low operate command at U14-2 to illuminate the fault indicator. This gate will also operate if the operate command clocks the flip-flop when there is no control signal present. Both conditions will cause a minor fault without using the fault gate. 342. Major Faults 342. A major fault clears the Trouble FF, in addition to generating a fault signal from the fault gate. The only method of setting the Trouble FF to remove the major fault is the Power-Up Initialize circuit, necessitating remov- ing power from the system and then resetting Ihe power switch to ON. 343. The quad comparator U22 activates the Trouble FF if either U22-1 or U22-2 are brought low when the Neg Supply cunent monitor at P43-12 or the POS Supply cur- rent monitor at P43-10, respectively, exceed their 300mA limits for 100 msec. U22-14 will go low if the signal from the Fan Switch is interrupted for approximately 6 seconds. Tne fourth comparator input is the overdrive which ori^n- ates in the preamp. If the overdrive signal goes high, U22-13 will go low and clear the Trouble FF, shutting down the system. 34

erly, i.e. Ql conducting and Q2 cut-off, Q3 is turned on activating the Trouble FF. The +28V limit sensor in the U21 comparator will turn Q4 on when the input drops to 20V, cutting off Q2 and activating the trouble circuit. 345. A major fault is also generated when high voltage is sensed at P43-8 during the Warm-Up period. The signal, if present, will turn on QIO to enable U14-13 so that when Ui4'12 is low during warm-up the trouble FF is cleared. 346. OVERLOAD DELAY 347 . The overload signal at P44-5 from the preamp ill- uminates the OVERLOAD indicator and activates the trip optical isoiaters in the selected interface device. Since it does not generate a fault and the overload pulse could be quite narrow a one-shot is installed in the circuit to give a minimum width pulse. The width of the pulse at U42-9 is determined by R126/C47 and is approximately 0.5 seconds. 348. POWER SUPPLIES 349. +28Vdc 3-50. The 21VrmsatP43-17, 18 andP43-19, 20 is rec- tified at CR18 and filtered by C28. The 21Vrms operates the incandescent lamps in the INSTRUMENT ON (lightning bolt) indicator. The +28 volts is used for the OPERATE in- dicators and various relays. The +28V is also used with Q5 and series regulator circuit to develop 5.6 volts for the pull-up resistor R73 . 3-51. +5Vdc 3-52. U25 is a 5 volt regulator which acts on the 8.5V rms supplied from the power supply. It is rectified at CR17 and filtered by C25-C27. Up to 400mA is supplied for the use of the IC’s on the logic assembly. Capacitors Cl, C3, CIO, Cl2 and C46-C56 are used for decoupling the integrated circuits on the assembly. 3-53. Preamplifier Assembly 3-54. The signal to be amplified enters the Preamplifier (Fig 3-2) from either the front panel input connector or the 5200 connector. Selection is made in the Input Circuits, un- der the control of the Logic. The input signal is amplified and internal feedback applied to set the gain at 100 within the Input Circuits. In the Output stage the instrument output voltage swing of + 1550 Volts is set. The output is sensed and returned to the Input, Logic, Overload and Feedback Circuits. The Feedback circuit takes the sensed voltage, divides it and feeds it to the 5200A for use in stabilizing gain and control. The Overload circuits sense high output voltages or low supply to cut off the input to the preamp- lifier. The Logic Circuits decode control inputs and supply status outputs to the Logic pcb. The +15 voit power supply provides regulated +15 volts dc to components on the preamplifier. 3-55. INPUT CIRCUITS 3-56. Input Relay 3-57. The input relay K1 is energized, through the logic block, when the input to the instrument is through the front panel connector (rear panel with the 07 Option). If the instrument is connected to the 5200A and the lOOOV range on the 5200A is selected the relay is de energized and a signal can be input only through the 5200A con- nector. 3-58. Input and Feedback Resistor Network 3-59. The gain of the 5205A is controEed with this circuit. The ratio of the 1.009M (R302) to the input re- sistance gives a gain of 100. R302 (lOK), R5 at mid range (50f2) and the resistance of Q121 (40^2) combine for an input resistance of 10.09K for the hundred to one ratio. Resistors R30I and R302 are deposited in the same substrate and mounted in a heat dissipating miUed alumin- um can for optimum performance. 3-60. Input FET Switch 3-61. Q121, the input FET switch interrupts the input signal when the instrument is in standby or overload. Since the resistance of Q121 is part of the input resistance any change in temperature wEl effect the resistance of the FET and through it the gain of the instrument. The com- pensation circuit, Q122 and U25 with their associated com- ponents, is used to hold the resistance of Q121 constant. 3-62. Input Amplifier 3-63. Transistors Q128, Q132, Q138, QUO, Q147 and Q148 in conjunction with the Op-Amp U123 and their associated components make up a wide band DC coupled amplifier, which is the input ampEfier. The input signal and feedback is summed at Q128, routed through Q132 and Q140 and then output to the next circuit at 0148. Transistors Q138 and Q147 provide current sources of 1,8 mA and 3.6 mA respectively. C147 is adjusted so that at 20 kHz it matches the break of the resistance and cap- acitance at the plate of the drive tube. C143 is adjusted for the correct gain at 100 kHz. Op amp U123 keeps the instrument output offset near zero. Any dc voltage at the summing point is amplified by U123 and applied to the source of Q128, where it is amplified by the remaining stages. At the output the feedback, through R302 brings the summing point back to zero. Since the dc gain of U123 is high the dc offset of the instrument is determined by the characteristics of U123. Above 20 kHz the gain of 3-5

QI28 is held to zero volts AC by C128. As a result the gain of the input amplifier is determined by Ql 28 and the load capacitance at the collector of Q132 above 20 kHz. 3-64. OUTPUT CIRCUITS 3-65. Zener String 3-66. The zener string provides a dc path from the input amplifier across a potential of 1900 volts to the output amplifier. In the string the 50V, iOOV and two of the nine 200V zeners are shorted with a jumper that can be removed to adjust the voltage on the output amplifier common to between —1850 and —1910 volts. The bias current through the string is the 3.6mA supplied by the current source Q147. Frequencies above 150 kHz are by- passed around the string by C192. 3-67. Output Amplifier 3-68. After the zener string the input signal current goes to the output amplifier which provides an amplified low distortion current to the drive tube. Common for the output amplifier is kept at —1.9kVdc potential, as set by the —1 .9kV repiator which allows the drive tube plate to fall to the —1550 volts required by the instrument output and still maintain the bias required on the tube. The amp- lifier consists of transistors Ql 82 through Q187 which are supplied a ±29Vdc from Cl82,C183, CR182 and the 40 rms input. Q185 is used as a current source to take 1.7 mA of current from the 3.6 mA supplied by the zen- er string. The remaining 1 .9 mA provides the amplifier with a full scale swing of ± 1.9mA so that when the signal swings —1.9 mAthe output current to the tube is zero but the zener string remains biased to 1.7mA from the current source. This bias keeps the impedance of the zener string low and prevents the distortion that would normally occur at the knee of the zener. The output from the amp- iifier at the emitter of Q182 is set in magnitude by Resistor R195 and the base voltage. This is applied to the cathode of the drive tube to develop the instrument output voltage at the tube plate. Distortion in the current output of Q182 is reduced by the diode connected transistors Q184, Q186 and Q187. The same voltage should appear across R195 and R197, therefore if 1.9mA flows in R197 a current of 30mA will flow in R195 and in turn in Q182 and the drive tube, providing the normal bias for the tube. 3-69. Drive Tube 3-70. The drive tube develops the instrument output voltage swing of ±1550 volts. Current from the output amplifier changes the tube plate to cathode voltage in response to the input signal thereby generating the instru- ment output. The screen grid voltage is set by VR185 and the resistor string R204 through R207. The plate load consists of R1 through R4, four 150K resistors in series, and the 20pF inherient in the tubes plate to plate shield and the coaxial cable (plate to power Amp input) capacitance. 3-71. -i.9kV Regulator 3-72. Regulation of the —1 .9kV at the Output Amp- lifier common is accomplished by regulating the input volt- age to the zener string. As long as the input at the zener string is -85 volts the voltage at the junction of R151 and R158 and at U157-3 will be zero. Since U157-2 is tied to common and change in the zener string input will effect the U157 Op Amp, and in turn Q161 and the optical coupler U160. The signal is passed across the coupler to the photo transistor which drives Q177 which drives the regulator tube V2, changing the common of the output amplifier and the input to the zener string, bringing the loop into balance. Q176 is used as a current limiter for the regulator and is set for a limit of 55mA 3-73. FEEDBACK CIRCUITS 3-74. 1000:1 Divider Network 3-75. Sense voltage for the 5200A is divided down to the required level by the 1000:1 divider network. The high voltage on the sense line is applied to the 1 .(X)09M resistor (R304) and divided by 1.019K (R303) and the shunt resistors R8 and R9 to give a 1000:1 ratio. Resist- ors R303 and R304 are deposited on a substrate to pro- vide good thermal tracking which keeps the division ratio constant with temperature and self-heating. The substrate is mounted in a milled aluminum can for heat disipation and must be replaced as a unit. 3-76. Buffer Amplifier 3-77. A unity gain amplifier (U12) is used to drive the coaxial cable carrying the divided signal to the 5200A. Dur- ing instrument overload, input to the Buffer Amplifier comes from thelO: 1 divider amplifier in the overload circuit. R14, R15, C14 and CIS provide frequency compensation for the divider and buffer network. 3-78. OVERLOAD CIRCUITS 3-79. Slew Rate Sense Amplifier 3-80. If the difference in the slew rate voltage between the input amplifier rate and an output sample rate exceeds a voltage detected by a differential amplifier (125mV) a trigger is provided to the one-shot multivibrator, putting the instrument into overload. The input signal is taken from the emitter of Q148, divided 10:1 by RllO and R109 and 3-6

other input to Q104 is a sample of the output as developed across R108 and Rill and coupled from the sense line by C91. Q105 is a 5mA current source, provided 2.5mA to each side of the differential amplifier. Q103 and Q106 each provide 3.75 mAto the collectors of the differential amp- lifier. As a result both QlOl and Q102 are biased off, as long as the differential is balanced. When the differential input to the amplifier reaches 125mV either QlOl or Q102 turns on and provides an input to the one-shot multivibrator Q92 and Q93, thereby, putting the instrument into the over- load mode. 3-81. One-shot 3-82. In the one-shots quiescent state, Q92 is conducting and A93 is cut off. When triggered by the slew rate sense amplifier a 5 Volt pulse is provided from the collector of Q93 to the gate drive circuit for a 4mSec period. 3-83. Gate Drive 3-84. Transistors Q37, Q42, Q43, Q44 and their associ- ated components comprise the Gate Drive Circuit. When the one-shot is triggered the resulting pulse turns on Q42 and Q37, enabling the gate of the FET switch Q7 and conn- ecting the 10:1 divider to the buffer ampUfier. Q43 is turned on from Q42 which turns off the input FET switch and re- moves the input signal from the input amplifier. Q43 can also be turned on from the Logic Circuit (Q45) to prevent the input signal from reaclung the input amplifier when the in* stmment is in standby. 3-85. 10: 1 Divider Amplifier 3-86. With the instrument in overload it closes the loop back to the 5200A, preventing the 5200A control loop from developing large errors when there is no feedback signal from the 5205A. Gain of the amplifier, U7, is set by the ratio of R7 (5.23K) to R6 (49 .9K) which equals 0.105. Application of the amplifier to the buffer amplifier is controlled by the 5200A FET switch. 3-87. 5200A FET Switch 3-88. When an overload condition enables the gate drive the 5200A FET Switch Q7 is turned on, providing a path for the 10:1 divider amplifier output to the 1000:1 divider network. This low impedance output overrides the signal from the 1 000: 1 divider network, closing the loop to the 5200A. When the overload is removed the FET Switch will automatically turn off after a 3.5 msec delay. 3-89. LOGIC CIRCUITS 3-90. These circuits provide the decoding logic for the control inputs and supply the status outputs to the Logic pcb. Input a re the 5200 CONTROL and 5205 OPERATE CO.MMAND. The former determines whether the 5200 or Front panel input will be accepted while the latter sets the mode of operation. Status signals output are called OVER- DRIVE, NEG HV and OVERLOAD". 3-91. Logic Control 3-92. The 5200 CONTROL input is low in the local mode of operation, activating half of the Optical coupler U51, turning on Q51 and energizing the relay K1 . The contacts of K1 select the point of origin for the signal into the Input FET Switch. With K1 energized the input comes from the Front Panel Connector, deenergized from the 5200A input connector. The 5205 OPERATE COMMAND is low for operate, activating the other half of U5 1 . With the coupler transistor on, both Q45 and Q43 will be off, allowing the Input FET switch to turn on and the instmment to go into operate. 3-93 . When an overload condition exists Q37 in the Gate Drive circuitry turns on, turning on Q40 and activat- ing half of the coupler U52. With the coupler transistor on OVERLOAD goes low, providing a status output to the logic pcb. 3-94. ±i700V Comparator 3-95. The output voltage is sampled and divided by R59 (9.53m) and R67 (56.2K) then applied to one input of the comparators V64 and V65. A +10V reference from the divider R63 and R64 is applied to the other input of U64. Divider R66 and R65 supply a —lOV reference to comparator U65. As long as the output voltage is less than ±1703 Volts the outputs of both U64 and U65 stay high allowing current to flow in Q62 and U62, and in U52. provided the output of U167 is low. When the output exceeds ±1700 the appro- priate comparator output goes low, turning off Q62, U62 and U52.With no current flow in U52 and U62 the OVERDRIVE and NEG HV logic signals to the Logic pcb go high, setting the NEG HV logic signals to the Logic pcb to high, setting the instrument to Standby and opening the input FET switch. With no input the output should drop to zero and Q62 turn on again for a normal overload. If the overload re- mains after one second it is an indication of a malfunction and a fault results. 3-96. Negative High Voltage Sensor 3-97. The negative high voltage is sampled by the divider R170 through R174 and R167 and applied to one input of the comparator UI67. The other input has a +5 Volt ref- erence from the zener VR166 and the divider R157, R154 and R156. As long as the negative high voltage is more neg- ative than -2225 Volts the output of U167 is low and cur- rent flows through the coupler U52. If the output becomes less negative than —2225 a high output results at the coupler U52, setting the instrument to standby. 3-7

3-99. A 3 IV rms input from the Auxiliary power supplies is rectified by CR70 to produce ±20V unregulated. This is filtered by C70 then Q79 is a series pass to reduce it to +15Vdc. The +I5V is sampled by the divider R80, R83 and R82 and compared to the reference in U79. Any difference between the reference and the sample is amplified by U79, driving the base of Q79 to keep the output at +1 5 Volts. R79 is the current sense resistor which allows U79 to limit the output current to 160 mA. 3-1 00. The - 1 5 Volts is obtained from the unregulated supply through the filter C71 and the series pass transistor Q76. The +15 is used as a reference and is connected to the op amp U75 through R73. The -15 is connected to U75 through R74 and since both resistors have the same value the input to the amplifier at the R73/R74 tie-point is zero when the negative output is —15 Volts. Any difference will be applied to the base of Q76 to return the negative output to —15 Volts. Q77 is a current limiter to hold the maximum output current to 80 mA. 3-101. Power Amplifier Assembly 3-102. The Power Amplifier, as shown in Figure 3-3, is basically a class AB push-pull type amplifier. The upper tubes (VI and V2) are connected in parallel to provide sufficient output current capability for the positive por- tion of the output. The Lower tubes (V3 and V4) are con- nected in the same manner for the negative portion of the output. The low output impedance in the output stage is achieved by using a complementary emitter-follower output driven by the Input FET Q4. Bias is provided by a network consisting of Q8 and its associated components. The upper tubes have their screen and control grids indirectly connected to the output terminals so the cathode output of the tubes is always slightly hi^er than the output voltage. This pro- tects the drain of the input FET (Q4) and the collector of the NPN half (Q1 1) of the complementary emitter follower in the output stage. As a result, the voltage from the output terminal to the tube cathodes is in the range of 5 to 40 volts, which provides adequate breakdown protection for the solid state components. The Lower tubes and the Lower tube driv- er (Q1 50) are controlled by an auxiliary feedback loop, using the light coupler (U165). The purpose of this loop is to control the base to collector voltage of the PNP half of the emitter-follower (Q12) to approximately 5 volts. This has been accomplished by arranging the feedback so that current through the 30mA current source (Q14) remains constant, which provides the input to the zener VR15, which in turn sets the 5 volts for Q12 in the output stage. As long as the output capability of the amplifier is not exceeded and current flows in the 30mA current source the circuit is able to hold the Q12 base-to-collector voltage almost constant. 3-103. The signal path through the circuit is detailed in the following procedure. It is assumed that the LED loop is stabilized with 30 mA of current through the LED prior to an input signal. When a small negative voltage is applied to the circuit as an input the FET Q4 acts as a source follower and translates the change in voltage directly to the bases of the output followers Q1 1 and Q12. The immed- iate response is to decrease the current in Q1 1 and increase it in Q12, as determined by the output load. Since the loop is stabilized the plates of the V3/V4 combination are an extremely high impedance, the increasing current in Q12 flows into the emitter of the LED driver Q14, decreasing the current through the LED. As a result, the current in the PIN half of the coupler is decreased and the net input current to the amplifier Aq is negative. This slews the in- put node capacitance of approximately 42pF negative, re- sulting in a positive output at the base of Q150, which is effectively connected in cascade with the V3/V4 combina- tion. This increases the plate current through V3/V4, which tends to return the current through Q14 to its nominal 30mA value. The total current excursion in the LED diode is pro- portional to the time derivative of the total negative tube current. With the approximate transfer ratios and circuit values shown in the simplified schematic (Figure 3-3) the bandwidth of the light coupled loop is approximately 2.5MHz. In actual usage the loop bandvadth is set to 2.5 MHz by adjusting C162 for 30mA peak-to-peak in the LED with a 100 ohm load at 100 kHz. 3-104. In normal operation the nominal 2.2V dc bias (Q8 and associated components) between the bases of the complementary output followers is adjusted so that 30mA of current is flowing through Q12 and 65mA through Q1 1 . The extra 35mA in Qi 1 is required to provide the current used by the current sources Q17 and CR5 . The currents in these sources does not return to the output node of the amplifier but ends up flowing through the driver tube plate and the plates of the negative drive tubes. When the output load requires a very small current excursion the amplifier re- mains in a class A configuration with both Ql I and Q12 slightly on. As the output current raises in the positive dir- ection the current through Q12 decreases and is completely cutoff when the output exceeds +60 mA For more positive current all the remaining current necessary comes from Ql 1 and the positive drive tubes V1/V2. Conversely, Qll, is cutoff for negative output currents in excess of 130mA and the current is provided from Q12 and the plates of the nega- tive drive tubes V3/V4. 3-8

TO AVOID ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING OTHER THAN THAT CON- TAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO. INTRODUCTION 2 Insure power is removed from the 5205A. 4-1. 4-2. This section contains information on General Main- tenance, a Performance Verification test, a Calibration pro- cedure and Troubleshooting information. The calibration procedure should be performed on a periodic basis (90 days) to detect the need for and to make required adjustments. The performance verification test can be used upon receipt of the 5205A and any other time desired to verify the cor- rect operation of the equipment. The troubleshooting pro- cedures will aid in the isolation of a fault to a particular pcb assembly and further, to a circuit or particular section of the pcb . 4-3. SERVICE INFORMATION 44. Each instrument that is manufactured by the John Fluke Mfg. Co., Inc. is warranted for a period of one year upon delivery to the original purchaser. The WARRANTY is located at the front of the manual. 4-5. Factory authorized calibration and service for each Fluke product is available at various world-wide locations. A complete list of domestic service centers is located in Section 7 of this manual. Shipping information is given in Section 2. If requested, an estimate will be provided to the customer before any repair work is begun on instruments that are beyond the warranty period. 4-6. GENERAL MAINTENANCE 4-7. Cleaning Instructions 4-8. PeriodicaEy (at least every 90 days) clean the 5205A to remove diist, grease and other contaminants using the following procedure: b. Remove the top and bottom covers and the inter- nal top covers from the power supply and instru- ment compartments. c. Remove the air filter from the rear of the fan com- partment. Clean the filter using either low pressure clean dry air or a water and mild detergent solution. d. Clean the interior of the 5205A using low-pressure clean dry air or a vacuum cleaner. e. If required, clean the pcb assemblies by spraying them with anhydrous ethyl alcohol to loosen the dirt and then reraovii^ all residue with low pressure clean dry air. Allow at least six hours for drying time before reapplying power to the 5205A. f. Clean the front panel and exterior surfaces with anhydrous ethyl alcohol or a soft cloth dampened with a mild solution of detergent and water. 4-9. Fuse Replacement 4-10. Listed below are the correct replacements for the Line Power Fuses. Use only the correct rating as a replace- ment, dependent upon the supply voltage: a. Line voltage 100 or 115 volts: High Voltage -- MDA 15 amp Aux Power — MDA 5 amp b. Line voltage 200 or 230 volts: High Voltage — MDA 8 amp Aux Power — MDA 2 amp 4-1

4-12. The 5205A can operate from any one of four possible line voltages. Selection between 100, 115, 200, or 230 is performed by a combination of jumper position- ings which may be changed locally if required. The jump- ers may be set to the desired configuration using the pro- cedure given in Section 2 under the heading of input Power. CAUTION! Lethal voltages of up to ±4000V are present within the instrument for up to thirty seconds after power is removed from the system. Ex- treme caution should be exercised any time that the inner covers are removed from the instru- ment for servicing 4-13. Lamp Replacement 4-14. The indicators on the 5205A consists of both in- candescent lamps and Li^t Emitting Diodes (LEDs). If replacement is required, use the following procedures; 4-1 5 . INCANDESCENT LAMP REPLACEMENT a. insure power is disconnected from the 5205 A. b. Remove the top cover. c. The INSTRUMENT ON and OPERATE indicators are dual incandescent lamps mounted on individual plug-in assemblies. To remove, reach down in the space between the front panel and logic board and grasp the desired pcb and remove by pulling straight up. d. Replace the defective lamp and reassemble the in- strument in the reverse order. 4-16. LED REPLACEMENT a. Insure power is disconnected from the 5205A. b. Remove the POWER, COOTROL and MODE knobs on the front panel from their shafts using a .050 alien type hex wrench. c. Remove the top cover and the front three screws from the bottom cover. d. Remove the five screws on each side from under the side decals that secure the front handles and front panel to the mainframe. e. The front panel is now free to be moved away from the logic pcb for access to the LEDs. f. Remove the LEDs requiring replacement from the extension sockets and replace. g. After replacement reassemble the 5205A in reverse order. 4-17. Access to the Mainframe PCB Assemblies 4-18. PRELIMINARY PROCEDURES 4-19. The following procedure should be performed prior to removing any pcb from the instrument. a. Disconnect both line power cords from the line power source. b. Extremely hazardous voltages are present within the instrument for up to 30 seconds after removal of power. Wait for at least this period before continuing. c. Remove the top outer cover from the instrument. d. As a safety precaution, insure no stray voltages are present in the power supply, shorting TP501 to TP502, TP 504 to TP 506 and TP 505 to IF 506. These test points are on the power supply pcb and their locations are shown in Figure 4-1 . e. Proceed to the paragraph pertaining to the partic- uiar pcb to be removed. 4-20. POWER SUPPLY ASSEMBLY REMOVAL a. Remove the transformer cover from the left side of the instrument. b. Disconnect the Molex connections from the trans- former and power wiring. c. Grasp the plastic retainers and gently rock the pcb while moving it upward. Once free of the mother- board, lift it out of the instrument compartment. d. Reverse the procedure to replace the pcb. 4-21. PREAMPLIFIER ASSEMBLY REMOVAL a. Remove the Tube Chamber and Power Amplifier covers from the ri^t side of the instrument com- partment. b. Remove the right side panel by removing the screws, then grasp firmly at each end and puO straight up. c. Remove the shield over the preamplifier assembly by removing the screws and gently lifting it off. 4-2

J26) from the upper front of the assembly. e. In the tube chamber disconnect the coaxial cable center conductor & cable shield connectors. These leads connect the preamplifier to the power amp. They should be removed by grasping the connector with a pair of pliers and pulling straight out, toward the front of the instrument. f. On the Power Amp Upper Tube pcb remove the four screws that retain the Sense cable coining from the preamplifier. g. Grasp the plastic retainers and gently rock the pre- amplifier assembly while moving it upward. Once free from the motherboard lift it out of the instru- ment compartment. h. Reverse the procedure to replace the assembly. 4-22. POWER AMPLIFIER ASSEMBLY a. Remove the tube chamber and Power Amplifier chamber covers from the right side of the instru- ment compartment. b. In the Preamplifier tube chamber remove the Coaxial cable center conductor and cable shield connections. These leads connect the power amp- lifier to the preamplifier. They should be removed by grasping the connectors with a pair of pliers and pulling straight out, toward the front of the instrument. c. On the Upper Tube Assembly remove the four screws that connect the output cable to the pcb. Repeat the procedure for the sense cable to the preamplifier. d. Disconnect the molex connector on the Upper Tube pcb going to the Low CapacityTransformer. e. Grasp the plastic retainers and gently rock the assembly while moving it upward. Once free from the motherboard lift it out of the instrument compartment. f. if required, the assembly can be broken down to its individual pcb’s. The Upper tube pcb (5205A- 4030) is connected to the Lower tube pcb (5205A- 4031) and the Tube Mounting Assembly (5205 A- 4033) with screws along the edge. The Lower Tube pcb is connected to the tube mounting assembly with screws to conducting spacers permenantly attached to the tube mounting assembly. g. Reverse the procedure to replace the assembly. NOTE The top inner covers have labeled adjustment ports to facilitate the calibration procedure. All calibration points can be reached through these ports. For troubleshooting the right side cover and front panel can be removed for easy access to the preamp and logic pcb ’s respectively. 4-23. Access to the Logic PCB Assembly 4-24. Use the following procedure for access to the logic pcb assembly. a. Insure power is disconnected from the 5205A. b. Remove the POWER, CONTROL and MODE knobs on the front panel from their shafts. c. Remove the top cover and the front three screws from the bottom cover. d. Remove the five screws, one each side, from under the side decals that secure the front handles to the front panel. e. Move the front panel away to gain acc^s to the logic pcb . Insure the output c^le has sufficient slack to lay the front panel down flat on the work area. f. Remove the seven screws connecting the pcb to the mainframe and carefully remove the pcb. g. Reverse the procedure to replace the Logic PCB. 4-25. PERFORMAiMCE VERIFICATION CHECKS 4-26. Introduction 4-27. The following paragraphs contain a performance verification procedure. These tests may be used as an accept- ance test upon original receipt of the equipment, to verify calibration at any time prior to a schedded calibration cycle or as an aid in troubleshooting. 4-28. The test equipment required for the performance test is listed in Table 4-1. If the recommended equipment is not available replacements with equivalent specifications may be used. 4-29. In addition to the test equipment recommended in Table 4-1, accessory items required to check the performance of the 5205A are listed in Table 4-2. These are common items which may be easily obtained or fabricated locally. 44

Test Oscillator Fluke Model 5200 (Calibrated within 90 days) RMS Differential Voltmeter Fluke Model 931 Thermal Transfer Standard Fluke Model 540B Coaxial Thermal Converter CPD Engineering (Formerly Holt instrument Laboratories) Model 11. Only the thermoelement (PN 90081C), the Resistor Assy (PN 90080E) and the T ransfer Switch Assy (PN 85072) are required from the Model 1 1 series to perform these tests. Digital Voltmeter (SVs digit) Fluke Model 8S00A Digital Voltmeter* (Battery Operated) Fluke Model 8000A or S600A DC Calibrator Fluke Mode! 332D or 335D Oscilloscope* Tektronix Model 7403 with/ 7A18 Amplifier, 7B52 Dual time base, P6042 DC Current Probe 100:1 15(K)V rms rated Voltage probe 10:1 500V rms rated Voltage probe Autotransformer* Variac- rated - 18A at 100/1 15V - 10A at 200/230V * Used during Calibration only Table 4-2. TEST ACCESSORIES 1500 pF capacitive ioad Vitramon High Current porcelain capacitor, type VY84C152J 250 pF capacitive load Vitramon High Current porcelain capacitor, type VY82C251J 1CK) pF capacitive ioad Vitramon High Current porcelain capacitor, type VY81C101J 5000S2 resistive ioad 2 Resistors, Wire Wound, 10,000^2 ±5%, 225W Ohmite Type 0916 connected in parallel. 100^2 resistive load* Resistor, metal film, 100S2 ±1 %, 15W CADDOCK Type, MP31 50S2 termination Resistor 50J2 HP-10100C or equivalent Jumper pcbs (3 ea) Used to maintain bias condition with low input line power during caiibratioa Three are provided with the instrument. Additional or replacement jumpers may be ordered using Fluke part number 400762 (Drawing 5205A-3080). Insulated Trimming Tool* Rated at 4kV minimum - Recommended: JFD Adjustment too! 5284, Fluke PN 153049 Adaptor Banana Jack to BNC UG 1094-U Provide Connection between 5200A output and 5205A local input Coaxial Cable Male BNC connector on each end - not to exceed 6 ft. in length Jumper leads* Standard leads with alligator clips on both ends for jumpering test points. Thermal Transfer Standard to Construct an interconnect cable using the listed materials or an equivalent: Thermoelement interconnect cable Connect pin 3 of Amphenol connector 91-MC3M to pin A of connector MS3106A10SL-4S using one lead of Beiden type 8422 cable not exceeding 3 feet in length. Connect the second lead between pins 1 and B respectively of the connectors. Connect the cable shield to the shell of the MS3106A10SL- 4S connector. Secure the cable using clamp MS3057-4A. Used during Calibration only. 4-5

any operation. The equipment should have a warm-up per- iod of at least one hour prior to performing any test. a. Insure the strap connecting the 5205A OUTPUT LOW and chassis ground terminals is firmly in place. b. Insure that power is applied to the 5205A, the POWER switch is ON and the WARM-UP indicator has extinguished. c. Set the CONTROL switch to the position required for the mode to be used. LOCAL for the Local mode or REM-5200 for the Remote or Calibrator mode. d. Set the MODE switch to STDBY-RESET. 4-32. Local Mode 4-33. Before starting the test procedure insure the equip- ment set-up procedure in paragraph 4-30 has been completed. Perform each step of the test in turn, using the following procedures: 4-34. RANDOM NOISE TEST a. Ir^ure the CONTROL switch is in LOCAL. b. Terminate the 5205A input with either a 50-ohm resistor or a short circuit. c. Connect the output terminals to the AC differential voltmeter. d. Set the MODE switch to OPERATE. e. The differential voltmeter reads less than 120mV rms. f. Set the MODE switch to STDBY-RESET. 4.35 DC OFFSET TEST a. Connect the output terminal to the test DVM. b. Set the MODE switch to OPERATE. c. The lest DVM reads less than 10 mV dc. d. Remove the 50 ohm resistor or short from the input connector. e. The test DVM reads less than 10 mV dc. f. Set the MODE switch to STDBY-RESET. 4-36. DC GAIN a. Apply +10 Volt dc input from the DC Calibrator. b. Connect the 5205A output terminals to the test DVM. c. Set the MODE switch to OPERATE. d. The Test DVM reads between —999.6V dc and -1000.4V dc. e. Set the MODE switch to STDBY-RESET. f. Remove the dc input and test DVM. 4-37. MIDDLE FREQUENCY GAIN a. Connect the test equipment as shown in Figure 4-2. Figure 4-2. LOCAL AND REMOTE MODES CONNECTIONS. NOTE Use the Thermal Transfer Standard to adjust the Test Oscillator within the stated tolerances during the LOCAL MODE tests. b. Apply a lOV ac ±0.01% 20 kHz local input to the 5205A from the test oscillator. c. Set the 5205A MODE switch to OPERATE. d. Using the thermal transfer method verify the 5205A output is equal to lOOOV ac ±0.04%. e. Set the 5205A mode switch to STDBY. f. Wait at least 30 seconds, then apply a 5k ohm/ 100 pF parallel load to the 5205A output terminals. g. Repeat steps c, d and e above. h. Wait at least 30 seconds, then apply a 1 500 pF load to the 5205A output terminals. 4-6 4/76

±0.1% for the value in step d. j. Remove the applied load. 4-38. HIGH FREQUENCY GAIN a. Leave the equipment connected as shown in Fi^re 4-2. b. Change the test oscillator output frequency to 100 kHz. Verify with the Thermal Transfer Standard, the output is lOV ac ±0.01%. c. Set the 5205A MODE switch to OPERATE. d. Using the thermal transfer method, verify the 5205A output is equal to lOOOV ac ±0.14%. e. Set the 5205A MODE switch to STDBY. f. Wait at least 30 seconds, then apply a 5K ohm/ 100 pF parallel load to the 5205A output terminals. g. Repeat steps c, d and e above. h. Set the test oscillator output at 1 .8V ±0.01% and verify with the thermal transfer standard. i. Wait at least 30 seconds, then disconnect the ther- mal test equipment and connect the rms differential voltmeter across the 5205A output terminals. j. Set the 5205A MODE switch to OPERATE and adjust the rms differential voltmeter for a nuE read- ing. WARNING! Cfcserve all safety requirements before applying a load to an operating instru- ment. Do not come in phyacal contact with the load at any time. k. Apply the 1 500 pF load to the 5205A output, in- suring the deviation from the null does not exceed ±1.05%. l. Set the 5205A MODE switch to STDBY. Wait at least 30 seconds then remove the applied load and test equipment. 4-39. Output Current Test Procedure 4-40. Before starting the test procedure insure the equip- ment set-up procedure in paragraph 4-30 has been completed. Perform each step of the test in turn using the following pro- cedures: a. Terminate the 5205A output with a 250 pF load. b . Apply an 1 1 V ac 1 05 kHz signal to the local input connector from the Test Osciliator. c. Set the 5205 A MODE switch to OPERATE. d. If FAULT and/or OVERLOAD occurs perform the 5205A calibration procedure. 4-41. Calibrator Mode Test Procedure NOTE If the 5205A -will not be used in the Calibrator mode; that is, slaved to a 5200A, the Calibrator mode Test may be omitted. 4-42. Prior to shipment each 5205A is adjusted at the factory against a reference 5200A so that the amplitude error due to the 5205A is less than approximately 0.01%. If the 5200A used in this procedure is within specifications the 1000 Volt Range will meet the accuracy specification. 443. Before starting the test procedure insure the equip- ment set-up procedure in paragraph 4-30 has been completed. Connect the previously calibrated 5200Ato the 5205A using the special interconnect cable (P/N 341560) provided with the 5205A Accessory Pack. Perform each step of the test in turn using the following procedure: a. Initial 5205A Switch Settings POWER: ON (30 secs warmup period elapsed) CONTROL: REM-5200 MODE; STDBY-RESET b. Initial 5200A Switch Settings K)WER: ON (30 secs delay elapsed) MODE: STDBY CONTROL; LOCAL PHASE-LOCK: OFF SENSE; INT VOLTAGE ERROR: OFF VOLTAGE RANGE: iOOOV FREQUENCY RANGE; 10 kHz VOLTAGE MAGNITUDE: lOOOV FREQUENCY MAGNITUDE: IkHz c. Connect the test equipment as shown in Fi^re 4-3. d. Set the 5200A MODE switch to OPER. Both the 5200A and 5205A OPERATE indicators illuminate. e. Using the thermal transfer method verify the 5205A output is equal to lOOOV ac +0.042%. f. Change the 5200A output frequency to 100 kHz on the 100 kHz range. g. Using the thermal transfer method verify the 5205A output is equal to lOOOV ac ±0.1 1%. h. Set the 5200A MODE switch to STDBY and the Frequency output to 1 kHz. Wait at least 30 seconds, then apply a 5Kf2/100 pF parallel load to the 5205A output terminals. 4/76 4-7

j. Repeat step d through h. k. Wait at least 30 seconds, then apply a ISOOpF load to the 5205A output terminals. l. Repeat steps d and e. m. Set the 5200A MODE switch to STDBY. n. Wait at least 30 seconds then remove the 1 500 pF load and apply a 250 pF load. o. Repeat steps d, f and g, omitting step e. p. Set the 5200A MODE switch to STDBY. Wait at least 30 seconds and disconnect the test equipment. 444. CALIBRATION PROCEDURES 445. General 446. The 5205A Calibration procedure should be per- formed at least every 90 days or any time that a component is replaced. The recommended test equipment and accessor- ies are listed in Tables 4-1 and 4-2. The internal layout is shown in Figure 44 while the test point and adjustment locations for the Power Amplifier, Preamplifier and Lo^c pcb are shown in Figures 4-5, 4-6 and 4-7 respectively. 447. Each main division in this procedure begins with a step verifying that all controls and test equipment is in the proper configuration prior to beginning the check. This added precaution is required because of the lethal voltages which can reach 4000 volts internally and 1500V on the output terminals. Since these extremely high voltages are present extra care should be taken to insure that conductive items, such as screwdrivers, pliers or fingers are not inserted into the instrument compartment. Care should also be taken to prevent forei^ objects from failing into the instrument since they may decrease the voltage breakdown capability of the inner circuitry. When replacing the top cover or right side panel after adjustments check the inside of the instru- ment very carefully to insure there are no loose screws, pieces of solder or other objects left bdiind. Use only non-conduc- tive trimming tools, rated at 4kV minimum for any internal adjustments. 448. Oscilloscope Preparation 449. MAINFRAME AND PROBE CALIBRATION 4-50. Prior to beginning the 5205A Calibration check the DC zero level on the scope display. Also verify the calibra- tion and AC response of the 100:1 and 10:1 probes when they are connected to the channel on which they are to be used. 4-5 1 . CURRENT PROBE CALIBRATION 4-52. The Tektronix P6042 DC Current probe must be calibrated at zero current each time it is used. Use the following procedure to prepare the current probe for use each time it is connected to the scope mainframe. a. Connect the P6042 output with a 50f2 BNC cable to the oscilloscope, using an HP-IOIOOC 50S2 feed through resistor at the oscilloscope input. b. Turn on the oscilloscope and current probe power and allow them to warm-up for at least five minutes, preferrabiy 30 minutes. c. Set the oscilloscope controls as follows: Volts/div - 50 mV Variable (Volts/div) - Calibrated Input Coupling - Ground d. Set the Current Probe controls as follows: Output DC level - Midrange Current/div Balance - Midrange Current/div- lA e. Center the trace vertically on the CRT, then switch the input coupling to DC. f. Push the thumb-controlled portion of the probe into the locked position. When the slider is in the locked position the shield around the transformer core is grounded, the PROBE UNLOCKED light is extinguished and the amplifier is ready for oper- ation. g. Race the probe fully into the front-panel receptacle. Momentarily (200 milliseconds minimum) depress the DEGAUSS lever and release. h. Adjust OUTPUT DC LEVEL to center the trace vertically on the CRT. i. Set the CURRENT/DIV switch to the desired position (in most tests it is lOmA/div) and again degauss the probe. Adjust CURRENT/DIV BALANCE to center the trace vertically on the CRT. j- 4-8 4/76

CStHlfCT i WSCOSJilCI TKT fH28£S BSW WSIU. roWIR IS OTF, B5SC0SBECT SST« POWEB C08BS m lEftST 3fi SESBWS 10 SERWCHffi. DANGER HIGH VOLTAGE SEMOnSO THIS COVES JIUOWS i«SESs m ±4ffi» mis. 4-10 Figure 4-5. POWER AMPLIFIER ADJUSTMENT PORTS

move the slider back, and place the probe around the conductor under test. Push the slider forward into the locked position. With the oscilloscope deflection factor set at 50 mV/div, the amplitude of the current waveform may be read directly from the front panel of the P6042. NOTE The current probe calibration procedure is necessary after initial turn-on and after making current measure- ments in excess of the dynamic range of the P6042. To degauss, lock the probe and place it in the panel receptacle and press the DECA USS lever. 4-53. Equipment preparation 4-54. Prepare the instrument for calibration using the following procedure; a. Insure both power cords are disconnected from the AC power line. b. Insure that the POWER switch on the 5205A front panel is OFF, the CONTROL switch is to LOCAL and the MODE switch is to STDBY-RESET. c. Remove the top cover of the instrument. d. Remove the right side cover to expose the preamp- lifier adjustments by removing the seven holding screws and pulling the side cover straight up. e. Using the shorting link provided insure the OUTPUT LOW and chassis ground terminals are connected and firmly in place (on front panel). f . Disable the HV interlock by pulling the center rod of the interlock switch up. The interlock switch is located in the left rear comer of the instrument protruding through the transformer compartment cover. g. Set the autotransformer for zero output. h. Connect the autotransformer input to the nominal AC line voltage for which the instrument is rated. (Be sure variac is rated for the line voltage and current being used.) CAUTION! All test points and adjustments on the pre- amplifier are accessible through openings in the shields covering the instrument compartments. Do not remove these shields during the calibration procedure. Always be sure to use a non-conduc- tive screwdriver rated to 4kV to make these adjustments. 4-55. Output Stage Calibration 4-56. A portion of the calibration procedure contained in the following subparagraphs is performed with the high volt- age line power supply input reduced to 25% of nominal. This reduces the high voltages present in the instrument to approxi- mately 600 volts. The bias states are properly maintained in this condition with a jumper system. This feature lessens the danger associated with calibrating or servicing a potentially lethal instrument. All line power input voltages are ^ven as a percentage of the nominal line voltage for which the instru- ment is wired. 4-57. The balance readings are or may be at a high po- tential. The reading should be taken with a floating DVM, that is, a battery operated meter with no connection to ground through the line cord, to reduce common mode measurement errors. Care should be taken that the DVM chassis is well separated from any conducting material to prevent voltage breakdown. Do not touch the D\TVI when the 5205A power is on. 4-58. When the three jumper pcb’s are required to main- tain bias during operation with less than normal input volt- age, insert them in the marked slots in the preamplifier shield. 4-59. Personnel performing the calibration procedure should be aware of the hazardous voltages present and observe good safety precautions at all times. 4-60. OUTPUT STAGE INITIAL SET-UP 4-61. Connect a 100:1 probe to the Oscilloscope input channel. Prepare the oscilloscope to read 5 mV per division (corresponding to 0.5V per division at the probe tip) using DC coupling. Connect the probe to TP307 OUTPUT HIGH TEST through the Power Amp shield. Connect the scope ground lead to chassis. 4-62. Battery Operated DVM: Prepare the DVM to read less than 2 Volts dc. Connect the HI input lead to TP33 1 and the LO lead to TP332 through the Power Amp shield. CAUTION Insure the floating DVM case is well away from all conductive materia! to prevent short circuits. Although the procedure is safe when performed as described, under extremely abusive conditions a hazardous situation might occur. Verify the probe leads are properly insulated to preclude any shorts or arcing to the Power amp shield or chassis. 4-63. Autotransformer: set the output to zero volts and connect the power line cord to the nominal line voltage. 4-64. 5205A; Insure the equipment preparation procedure 4-13

Install the three jumper pcbs through the Preamplifier shield. Connect the Auxiliary Power line cord to the nominal line voltage and the High Voltage line cord to the autotransformer. 4-65. UPPER TUBE BALANCE WARNING! Do not touch the DVM with hands or body any time that power is applied to the 5205A. 4-66. Perform the calibration using the following pro- cedure. a. Insure the autotransformer output is set to zero. b. Set the 5205A POWER switch to ON. NOTE With the INSTRUMENT ON, either the LOCAL, REM or 5200, and the WARM-UP indicators illuminate. After a 30 second delay the WARM-UP indicator extinguishes and the STDBY-RESET indicator illuminates. This time delay occurs each time power is applied to the instrument after it has been removed. If theMODE switch is set to OPERATE before the time delay expries a FAULT indication results. c. After the warm-up period raise the autotransformer output voltage to approximately 25% of the nomin- al line voltage (25% x 115V = 29N). d. Verify the voltage displayed on the oscilloscope is 0 ±i(X) mV dc at the probe tip (less than ±0.2 division on the display). If the display is greater than ±100 mV the circuit is defective. NOTE The above reading is adjusted during the DC OFFSET CALIBRATION later in this procedure. If it exceeds the listed tolerance it is beyond the adjustment range and should be repaired at this time. Use the Troubleshooting procedure in Table 4'3 starting at step 86. e. Adjust R33 BALANCE UPPER TUBES for a minimum reading on the DViM. The maximum allowable reading is 0±10 mVdc. f. If the reading exceeds the allowable, remove power, set R35 ABSOLUTE SCREEN VOLTAGES UPPER TUBES to approximately mid-range, reapply power, then repeat the test. If the reading still exceeds the allowable, the instrument is defective. g. Set the autotransformer output voltage to zero, set the POWER switch to OFF and disconnect both power cords. Wait at least 30 seconds for the Power Supply to discharge and disconnect the DVM from test points 33 1 and 332. 4-67. LOWER TUBE BALANCE 4-68. Make the following equipment changes: a. Connect the Battery Operated DVM HI input lead to TP333 and the LO lead to TP334 through the Power Amp shield. CAUTION Insure the floating DVM case is well away from any conductive material to prevent short circuits. Although the procedure is safe when performed as described, under extermely abusive conditions a hazardous situation mi^t occur. Verify the probe leads are property insulated to preculde any shorts or arcing to the Power amp shield or chassis. b. Reconnect the Auxiliary Power line cord to the nom- inal line voltage and the High Voltage line cord to the autotransformer. WARNING! Do not touch the DVM with hands or body any time that power is applied to the 5205A. 4-69. Perform the calibration using the following pro- cedure : a. Insure the autotransformer output is set to zero. b. Set the 5205A POWER switch to ON. c. After the Warm-up period raise the autotransformer output voltage to approximately 25% of the nominal line voltage (25% x 1 15V = 29V). d. Verify the voltage displayed on the osiciloscope is 0 ±100 mV dc at the probe tip (less than ±0.2 division on the display). If greater than ±100 mV the instrument is defective. NOTE The above reading is adjusted during the DC OFFSET CALIBRA TION later in this procedure. If it exceeds the listed tolerance it is beyond the adjustment range and should be repaired at this time. Use the troubleshooting procedure in Table 4-3 starting at step 86. e. Adjust R1 1 2 BALANCE LOWER TUBES for a minimum reading on the DVM. The maximum allowable reading is 0 ±10 mV dc. 4-14

set R109 ABSOLUTE SCREEN VOLTAGES LOWER TUBES to approximately mid-range, reapply power, then repeat the test. If the read- ing still exceeds the allowable the instrument is defective. g. Set the autotransformer output voltage to zero, set the POWER switch to OFF and disconnect both power cords. Wait at least 30 seconds for the Power Supply to discharge and disconnect the DVM from lest points 333 and 334. 4-70. OUTPUT STAGE BIAS CURRENT 4-7 1 . Make the following equipment changes: a. Connect the Battery Operated DVM HI input lead to TP307 OUTPUT HIGH TEST and the LO lead to TP308 PNP through the Power Amp shield. Both the DVM and Scope HI input leads are now connected to this test point. CAUTION Insure the floating DVM case is well away from any conductive material to prevent short circuits. Although the procedure is safe when performed as described, under extremely abusive conditions a hazardous situation mi^t occur. Verify the probe leads are properly insulated to preclude any shorts or arcing to the Power amp shield or diassis. b. Reconnect the Auxiliary Power line cord to the nominal line voltage and the High Voltage line cord to the autotransformer. WARNING! Do not touch the DVM with hands or body any time that power is applied to the 5205A. 4-72. Perform the calibration using the following pro- cedure. a. Insure the autotransformer output is set to zero. b. Set the 5205A POWER switch to ON. c. After the Warm-up period raise the autotransformer output voltage to approximately 25% of the nom- inal line voltage (25% x 1 15V = 29V). d. Verify the voltage displayed on the oscilloscope is 0 ±100 mV dc at the probe tip (less than ±0.2 division on the display). If the display is greater than ±100 mV the circuit is defective. NOTE The above reading is adjusted during the DC OFFSET CALIBRATION later in this procedure. If it exceeds the listed tolerance it is beyond the adjustment range and should be repaired at this time. Use the Troubleshooting procedure in Table 4-3 starting at step 86. e. Adjust R7 OUTPUT STAGE BIAS CURRENT for a reading between +220mV and +240mV on the DVM, f. Set the autotransformer output voltage to zero, set the POWER switch to OFF and disconnect both power cords. Wait at least 30 seconds for the Power Supply to discharge and disconnect the DVM from test points 307 and 308. 4-73 . LED LOOP BIAS CURRENT 4-74. Make the following equipment changes: a. Insure the P6042 current probe is calibrated for a zero indication and a current sensitivity of 10 mAj division as described in the Current Probe Cali- bration procedure. b. Connect the current probe around TP309 LED CURRENT TEST LOOP with the arrow on the probe pointing to the front of the instrument. Also insure the probe is properly locked and the PROBE UNLOCKED indicator is extin^ished as described in the Current Probe Calibration. c. Set the oscilloscope current channel controls for DC coupling with sensitivity of 50 mV/division. d. Reconnect the Auxiliary Power line cord to the nominal line voltage and the High Voltage line cord to the auto transformer. 4-75. Perform the calibration using the following pro- cedure; a. Insure the autotransformer output is set to zero. b. Set the 5205A POWER switch to ON. c. After the Waim-up period raise the autotransformer output voltage to approximately 25% of the nom- inal line voltage (25% x 1 15V - 29V). d. Verify the voltage displayed on the Oscilloscope is 0 ±100 mV dc at the probe tip (less than ±0.2 division on the display). If greater than ±100 mV the instrument is defective. NOTE The above reading is adjusted during the DC OFFSET CALIBRATION later in this pro- cedure. If it exceeds the listed tolerance it is 4-15

repaired at this time. Use the troubleshooting procedure in Table 4-3 starting at step 86. e. Display the LED Current and carefully adjust R172 Led current for a display of -30 mA ±1 mA (3 div±0.1 div). f. Lower the autotransformer voltage to zero, dropping the LED Current to zero, and verify the current probe zero adjustment. g. Raise the auiotransformer output voltage back to the previous setting of approximately 25% of the nominal line voltage. h. Verify the LED current is -30 mA±ima. Re- adjust R1 72 if required. i. Set the auiotransformer output to zero. Set the POWER switch to OFF and disconnect both Power cords. Wait at least 30 seconds for the Power Supply to discharge then disconnect the voltage and current probes and the three jumper pcb’s from the instrument. 4-76. LED LOOP BANDWIDTH 4*77. Make the following equipment changes: a. Set the Oscilloscope current channel controls for AC Coupling remaining at 50 mV/division sen- sitivity, then center the trace baseline. b. Disconnect the 100:1 probe from the oscilloscope voltage channel. Replace it with a 10: 1 probe connected across the 5205A output terminals. Set the scope controls for DC coupling, 1 V/division sensitivity (corresponding to lOV at the probe tip) and a Time Base of 2 usec/division. c. Connect a Test Oscillator (TO) to the 5205A input using coaxial cable with the applicable connectors. Do not exceed six feet of cable. d. Verify removal of the three jumper pcb from the pre-amplifier. e. Disable the ±200 mA current trips on the 5205A Logic pcbs by connecting TP410 (1l+) to TP409 (+5V) with a jumper to disable the positive HV supply current trip and TP408 (II-) to TP407 (GND) to disable the negative HV supply current trip. f. Connect the lOOH 15W load resistor across the 5205A output terminals. g. Reconnect the Auxiliary Power line cord to the nominal line voltage and the High Voltage line cord to the auiotransformer. 4-78. Perform the calibration using the following pro- h. cedure: a. insure me autotransformer output is set to zero. b. Apply an input of 0.283 ±2% volts rms at 100 kHz from the Test Oscillator. c. Set the 5205A POWER switch to ON. d. After the Warm-up period quickly raise the auio- transformer output voltage to 100% of the nominal line voltage. NOTE 0 VERIOAD and FA Ul T indications will result if the autotransformer output is raised to slowly. e. Set the 5205A MODE switch to OPERATE. f. The scope voltage channel probe displays an eight division peak-to-peak sinusoidal waveform, corre- sponding to approximately 800 mA pp output cur- rent. Since the gain has not yet been set the mag- nitude of the display will not be exact. g- Adjust CI62 LED LOOP BANDWIDTH so that the current channel waveform is 30 mA pp between the positive and negative peaks. The waveform should appear as shown in Figure 4-8. Figure 4-8. LED LOOP CURRENT WAVEFORM VOTE The current displayed is essentially proportional to the derivative of the total current drawn by the Power Amplifier lower Output tubes. Set the 5205A MODE switch to STDBY-RESET. Remove the Test Oscillator input to the 5205A. 4-16

Set the POWER switch to OFF and disconnect both power cords. Wait at least 30 seconds for the Power Supply to discharge and disconnect the oscilloscope voltage and current probes from the instrument. 4-79. SCREEN VOLTAGE CALIBRATION 4-80. Make the following equipment changes: a. Prepare the DVM to monitor the nominal AC line Voltage and connect the input leads across the auto- transformer output. b. Prepare the Oscilloscope for operation with sen- sitivity of 2V/division (corresponding to 20V/division at the probe tip), a time base of 20 usec/division and dc coupling. c. Accurately adjust the oscilloscope probe AC com- pensation using the oscilloscope calibrator. d. Set the vertical gain of the oscilloscope by applying an external 56.57Vrms±l% (56.01 - 57.13) 10 kHz signal to the 10:1 input probe. Adjust the scope channel variable gain for a display of exactly 8 divisions peak-to*peak (at 20V/division sensitmty equal to 160V p-p). e. Disable the 5205A overload circuits by connecting TPiS OVERLOAD DISABLE to TP19 GND (SENSE LOW) with a jumper. The test points can be reached through the Preamplifier shield. f. Reconnect the Auxiliary Power line cord to the nominal line voltage and the High Voltage line cord to the auto transformer. 4-81. Perform the calibration using the following pro- cedure: NOTE For correct adjustment of the current limits it is important to check the zero base line for drift both before and after the procedure. If any drift occurs the procedure should be repeated. a. Raise the autotransformer output voltage to nom- inal plus ten percent (1 10% x 1 15V = 126.5V). b. Apply an input of 0.45 ±2% volts rms (0.441 - 0.459 Vrms) at 10 kHz from the test oscillator. c. Set the 5205A POWER switch to ON. NOTE The 5205A internal povjer disipation is very high when it is in the OPERATE mode. Maintain this status only as long as necessary to make the re- quired adjustment. d. After the warm-up period, set the 5205 A MODE siwtch to OPERATE. e. Adjust R109 ABSOLUTE SCREEN VOLTAGES LOWER TUBES through the power amplifier shield until the scope displays a waveform where the flat portion of the negative peak is at exactly -60 volts (-3.0 divisions). f. Check the zero base line setting the 5205A -MODE switch to STDBY RESET and then back to OPER- ATE. The adjusted peak voltage should remain as set in step e above. g. Set the Test oscillator voltage magnitude to 0.39V rms. h. Adjust R35 ABSOLUTE SCREEN VOLTAGES LT- PER TUBES through the power Amplifier shield until the scope displays a waveform where the flat portion of the positive peak is at exactly +52 Volts (+2.6 divisions). i- Check the zero base line by setting the 5205A MODE switch to STDBY RESET and then back to OPER- ATE. The adjusted peak voltage should remain as set in step h above. j . Set the MODE switch to STDBY-RESET and the POWER Switch to OFF, Remove the Test Oscilla- tor input to the 5205A. Set the autotransformer output voltage to zero and disconnect both power cords. Remove the oscilloscope and DVM leads. 4-82. POSITIVE CURRENT TRIP LEVEL ADJUSTMENT 4-83. Make the following equipment changes: a. Insure a jumper connects TP408 (Il_) and TP407 (GND) on the Logic pcb. Remove the other jump- ers previously installed between test points on the Logic and Preamplifier pcb’s. llie jumper remaining disables the negative current trip while setting the positive trip level. b. Connect the DVM HI input lead to TP411 (1+) and the LO lead to TP407 (GND) on the Logic pcb. Prepare the DVM to read less than 2 Volts dc. c. Reconnect the Auxiliary Power line cord to the nominal line voltage and the High Voltage line cord to the autotransformer. 4-17

a. Insure the autotransformer output is set to zero. b . Set the 5 205A POWER Switch to ON. c. After the warm-up period, raise the autotransformer output voltage to the nominal line voltage. d. Set the 5205A MODE switch to OPERATE. e. Apply an input of 0.285 Volts nns at 100 kHz from the Test Oscillator. f . Observe the DVM reading and slowly increase the Test Oscillator output until the 5205A trips into FAULT and STDBY-RESET. g. The DVM should read between —210 and —214 mVolts when it trips. If the DVM reading is within tolerance set the 5205A MODE Switch to STDBY- RESET, the POWER switch to OFF, the Autotrans- former output to zero and then proceed to the Negative Current Trip Level Adjustment in the following paragraph. If the reading is not acceptable continue with step h of this paragraphs. h. Reduce the Test Oscillator output to a level less than 0.285 Volts to prevent a FAULT condition. i- Rotate R49 fully counter-clockwise. j. Set the 5205A MODE Switch to STDBY-RESET and then OPERATE. k. Adjust the test oscillator output level for a reading on the DVM between —211 and —213 millivolts. l. Very slowly rotate R49 clockwise until the 5205A trips into FAULT and drops back to STDBY-RESET. m. Decrease the output level of the test oscillator slightly and reset the FAULT on the 5205A by setting the 5205A MODE switch first to STDBY- RESET and then to OPERATE. n. Slowly increase the test oscillator output until the 5205A trips into FAULT, verifying that it occurs between -210 and —214 millivolts. 0 . Set the 5205A MODE switch to STDBY-RESET and the POWER switch to OFF. Set the auto- transformer output voltage to zero. 4-85 . NEGATIVE CURRENT TRIP LEVEL ADJUST- MENT a. Reduce the Test Oscillator output to 0.285V rms, remaining at 100 kHz. b. Remove the jumper between TP407 and TP408 and connect it between TP410 (Il+) and TP409 (+5) to disable the Positive current trip while sett- ing the negative trip level. c. Transfer the DVM HI input lead to TP412 (I-) on the Logic pcb. 4-87. Perform the calibration as follows: a. Set the 5205A POWER switch to ON. b. After the warm-up period, raise the autotransform- er output voltage to the nominal line voltage. c. Set the 5205A MODE switch to OPERATE. d. Observe the DVM reading and slowly increase the test oscillator output until the 5205A trips into FAULT and STDBY-RESET. e. The DVM should read between +210 and +214 mVolts when it trips. If the DVM reading is within tolerance proceed to the following paragraph. If the reading is not acceptable continue with step f of this paragraph. f. Reduce the test oscillator output to a level less than 0.285 Volts to prevent a FAULT condition. g. Rotate R48 fully counter-clockwise. h. Set the 5205A MODE switch to STDBY-RESET then OPERATE. i. Adjust the test oscillator output for a reading on the DVM between +211 and +213 millivolts. j. Very slowly rotate R48 clockwise until the 5205A trips into FAULT and drops back to STDBY- RESET. k. Decrease the output level of the test oscillator just sli^tly and reset the FAULT on the 5205A by setting the 5205A MODE switch first to STDBY- RESET and then to OPERATE. l. Slowly increase the test oscillator output until the 5205A trips into FAULT, verifying that it occurs between +210 and +214 millivolts. 4-88. The Output stage portion of the Calibration is com- plete. Set the 5205A MODE Switch to STDBY-RESET and the POWER Switch to OFF. Set the autotransformer output 4-18

ment. Disconnect both power cords. Wait at least 30 sec- onds for the power supply to discharge then disconnect the DVM, the Test Oscillator and the Output load from the instru- ment. 4-89. Preamplifier Calibration 4-90. This p.ortion of the procedure contains the infor- mation necessary to calibrate the preamplifier section of the 5205A. As in the output stage calibration, all adjustments should be made through the indicated ports in the preamp- lifier shield. The shield should not be removed at any time since voltages up to 4000V are present within the instrument any time power is applied. Insert the output cable terminal into its safety area any time it is not is use. No jumpers or jumper pcbs are used during this test and should be removed if in- stalled. The shorting link between the front panel OUTPUT LOW and Chassis ground terminals should be installed at all Times. 4-91 . PREAMPLIFIER INITIAL SET-UP 4-92. DVM: Prepare the DVM to read less than 20 Volts DC. Connect the HI input lead to TPl i +15V and the LO lead to TP 1 9 GND (SENSE LOW). 4-93. Autotransformer; Set the output to zero volts and connect the power line cord to the nominal line voltage. 4-94. 5205A: Insure the equipment preparation proce- dure in paragraph 4-53 is complete and that all jumper wires or pcbs are removed from the instrument. Connect the Auxiliary Power line cord to the nominal line voltage. 4-95. PREAMPLIFIER + 1 5 VOLT SUPPLY VOLTAGE 4-96. Perform the calibration as follows: a. Set the 5205A POWER switch to ON. b. Adjust R82 +15V for a reading on the DVM be- tween +14.95 and 15.05 volts. c . Move the DVM HI input lead to TP 1 2 ™ 1 5V. d. The DVM reads between —14.65 and -15.35 volts. There is no adjustment. e. Set the 5205A POWER switch to OFF f. Remove the DVM test leads. 4-97. MINIMUM NEGATIVE HIGH VOLTAGE TRIGGER LEVEL 4-98. Make the following equipment changes; a. Prepare the DVM to monitor the nominal line volt- age and connect the input leads across the auto- transformer output. b. Terminate the 5205A input with a 50 ohm load. c. Connect the High Voltage line cord to the auto- transfoimer. 4-99. Perform the calibration as follows: a. Insure the autotransfoimer is set to zero. b. Set the 5205A POWER Switch to ON. c. After the Warm-up period raise the autotransformer output voltage to the nominal line voltage. d. Set the 5205A MODE Switch to OPERATE. e. Observe the DVM reading and slowly decrease the autotransformer output until the 5205A trips into FAULT and STDBY-RESET. f. When tripped the DVM should read between 98.0 and 98.6 Volts AC. g. Set the 5205A MODE Switch to STDBY-RESET, the POWER Switch to OFF, the autotransformer output to zero. h. If the DVM reading is within tolerance proceed to the Input FET switch Impedance Calibration in the next paragraphs. If the reading is not acceptable continue with the procedure in step i of this para- graph. i. Rotate R154 HV TRIGGER fully counterclock- wise. j. Set the 5205A Power Switch to ON. k. After the warmup period, raise the autotransformer output voltage to the nominal line voltage less 14.5% (115V - (115 X 14.5%) = 98.3V). l. Set the 5205A MODE Switch to OPERATE. m. Slowly rotate R154 clockwise until the 5205 trips into FAULT and drops in status to STDBY- RESET. n. Raise the autotransformer output voltage to the nominal line voltage. o. Reset the FAULT on the 5205A by setting the 5205A MODE switch first to STDBY-RESET and 4-19

luTT.i-stes vAtho-at a FAULT resulting. F- Set the MODE S'^itch to STDBY-RESET and the TOWER switch to OFF. Lower the autotransform- c- output voltage to zero. Disconnect the DVM test leads from the autotransformer output. 4. 1 C.: DvP: T FET SWITCH IMPEDANCE CALIBRATION 4-: 01 . Make the loiiowing equipment changes: a. Prepare die DVM to read less than 20 Volts dc. b. Eonnec: the DVM HI input lead to TPlo FETR and the LO lead to TP19 GND (SENSE LO). 4-102. Perform the calibration as foEows: a. Insure the autotransformer is set to zero. b. Set the 5205A POWER switch to ON. c. After the wann-up period, raise the autotransformer output voltage to the nominal line voltage. d. Adjust R22 FET R for a DVM reading between 7.9 and 8.1 volts. e Set the POWER switch to OFF. Lower the auto- transforme: output voltage to zero. Disconnect the DVM test leads from the preamplifier. 4-103. OVERLOAD TRIGGER BALANCE CALIBRATION 4-104. Make the following equipment changes: a. Connect a Test Oscillator (TO) to the 5205A input using coaxial cable with the applicable connectors. Do not exceed six feet of cable. b. Connecta 10:1 probe to the oscilloscope input channel. Prepare the oscilloscope to read 5mV/ division (corresponding to 50mV/division at the probe tip) using dc coupling. Connect the probe to TPl DC BALANCE MONITOR through the pre- amplifier shield. Connect the scope ground lead to TPl 9 GND (SENSE LOW). 4-1 05. Perform the calibration as folows: a. Insure the autotransformer is set to zero. b. Set the 5200A POWER switch to ON. c. After the warmup period, raise the autetransform- er voltage to the nominal line voltage. i Ground the oscilloscope input channel and set the trace lo the middle of the CRT. e. Remove the ground and adjust RI30 DC BALANCE for a minimum display on the CRT, not to exceed 0 ±5 millivolts. f. Apply an 1 1 Volt rms 1 10 kHz input to the 5205A from the Test Oscillator. g. Select AC Coupling on the oscilloscope and move the probe to TP 13 OVERLOAD TRIGGER SIGNAL. WARNING! Verify the output connector is stored in its safety area in the Front Panel. Dangerous voltages are present at the output terminals during this adjust- ment. h. Set the 5205A MODE switch to OPERATE. i. Adjust Rill AC BALANCE for a minimum peak- to-peak amplitude as displayed on the CRT. j . Set the 5205A MODE switch to STDBY-RESET and the POWER switch to OFF. Lower the auto- transformer output voltage to zero. Remove the oscilloscope probe and T.O. input from the instru- ment. 4-106. Calibration Point Adjustments 4-107. This section of the Calibration Procedure contains the steps required to set the calibration points. It is assumed that calibration of the output stage and preamplifier have al- ready been completed. 4-1 08. When the Calibrator Mode portion of the procedure is performed, it should be done in conjunction with the 5200A with which the 5205A is normally used. Also, the 5200 should be calibrated immediately preceding the 5205A. NOTE ffthe 520SA is calibrated with one5200A and used with a different 5200A, it is possible it will not meet specifications. 4-109. LOCAL/REMOTE MODE CALIBRATION 4-1 10. Steps.in the following procedure must be performed in sequence. If a readjustment of any previous step is re- quired, the entire procedure should be repeated, starting at the beginning. During the procedure the jumper pebs are not installed and no jumpers between test points used. Also, the autotransformer is not used, both power cords are applied directly to line power. 4-20

tor (TO) used in this portion of the 5205A Calibration. This can be of critical importance due to the high voltages and fre- quencies involved. In most cases the TO used will be a 5200A, however, either it or its equivalent must be accurately calibrated and the correction factor known at IkHz, 20 kHz and 100 kHz with 10 volts output on the 10 Volt range. 4-112. DC Offset 4*1 13. Prepare the equipment for the test as follows: a. Prepare the 5205A for the procedure by setting the power switch to ON, after verifying that the CON- TROL switch is in LOCAL and the MODE switch in STDBY-RESET. Also insure the shorting link connecting the front panel OUTPUT LOW and chassis ground terminals is installed and firmly in place. NOTE The 5205A should have power applied continu- ously for at least one hour prior to beginning the follow procedures. b. Prepare the test DVM to read DC volts on its most sensitive scale (resolution of at least 100 uV) and connect the 5205A output connector to the DVM input terminals. The 5205A HIGH terminal, marked with the lightning bolt, should connect to the DVM HI terminal. 4-1 14. Perform the calibration as follows: a. Verify there is no input to the Local input connec- tor and the one hour minimum warm-up period for stability has elapsed. b. Set the 5205A MODE switch to OPERATE. c. Check for an output voltage of 0 ±2mV. d. Terminate the 5205A Local input with either a short or 50 ohm resistor. e. Check for an output voltage of 0 ±2 mV. f. If both readings are within tolerance, set the 5205A mode switch to STDBY-RESET, remove the term- inating input and proceed to the LOCAL/REMOTE Mode DC Gain procedure in the next paragraph. If either reading is not acceptable continue with step g of this paragraph. g. Set the 5205A MODE switch to STDBY-RESET and remove the terminating input. h. Set the 5205A Mode Switch to OPERATE. i. Adjust R123 DC OFFSET for an output Voltage of0±l mV. j. Terminate the 5205A Local input with either a short or 50 ohm resistor. k. Verify the DC output voltage reads 0 ± 2mV. l. Set the 5205A MODE Switch to STDBY-RESET and remove the terminating input. 4-115. LOCAL/REMOTE Mode DC Gain 4-116. Make the following equipment changes ; a. Connect the DC Calibrator to the 5205A Local input and select a +10 volt dc output. b. Prepare the DVM to read 1 000 Volts dc. 4-1 17. Perform the calibration as follows: a. Set the 5205A MODE switch to OPERATE. b . Adjust R5 STAND-ALONE DC GAIN for a read- ing between —999.99 and —1000.01 volt dc on the DVM. c. Set the 5205A MODE switch to STDBY-RESET. d. Select, or reverse the leads if required, a —10 volt dc output from the DC Calibrator. e. Set the 5205A MODE switch to OPERATE. f. Verify the DVM reads between +999.98 and +1000.02 volts dc. g. Set the 5205A MODE switch to STDBY-RESET. h. Disconnect the DC Calibrator and the DVM from the instrument. 4-1 1 8. LOCAL/REMOTE Mode Middle and High Frequency Gain 4-1 19. Make the following equipment changes: a. Connect the 5205A to the test equipment as shown in Figure 4-2. b. Set the T.O. for a 10 Volt rms output at 20 kHz, 4-120. Perform the calibration as follows: 4-21

b. Perform the transfer test, adjusting C147 STAND- ALONE MF GAIN (20 kHz) for a transfer stand- ard null at 0 ±0.01%, taking the correction factors into account. c. Set the TO for a 10 Volt rms output at 100 kHz. d. Perform the transfer test, adjusting C143 STAND- ALONE HF GAIN (100 kHz) for a transfer stand- ard null at 0 ±0.02%, taking the correction factor into account. e. Set the 5205A MODE switch to STDBY-RESET. 4-121 . If the Calibrator Mode portion of these procedures as described in the following major division are not performed calibration is complete. Set the POWER switch to OFF and disconnect the test equipment. 4-122. CALIBRATOR MODE NOTE This portion of the Calibration Procedure can be omitted if the 5205A -will not be operated in the Calibrator MODE, i.e., slaved to a5200A. 4-123. Calibrator Adjustments Preparation 4-124. To insure maximum accuracy in the Calibrator Mode, the 5205A should always be calibrated in conjunc- tion with the 5200A with which it will be teamed. Cali- brate the 5200A immediately prior to calibration of the 5205A and the 5200A/5205A team. 4-125. A special interconnect cable is provided with the 5205A for operation in the Calibrator Mode. This cable connects the rear of the 5200A (J32, labeled 5205A) to the rear of the 5205A (25-pin connector labeled 5200A). 4-126. Prepare the equipment shown in Figure 4-3 for the calibration procedure by performing or verifying the following steps. a. Connect the 5200A and 5205A with the special interconnect cable provided. b. Set the 52CK)A front panel controls to the following positions: POWER Switch to ON. After the STDBY indicator illuminates, continue. MODE switch to STDBY. CONTROL switch to LOCAL. PHASE LOCK switch to OFF. SENSE switch to INT. VOLTAGE ERROR switch to OFF. VOLTAGE RANGE at lOOOV. FREQUENCY RANGE at IKHz. VOLTAGE Magnitude at lOOOV. FREQUENCY Magnitude of 1 kHz. c. Verify that there are no jumper pcbs or jumpers installed. Verify the shorting link is connected between the OUTPUT LOW and chassis ground terminals. Verify both power cords are connected to line power. Verify or set the 5205A controls to the following positions. The POWER switch is ON and the INSTRUMENT ON indicator illuminated. The CONTROL switch to 5200A/REM. The MODE switch to STDBY-RESET 4-127. Low and High Frequencies Gain Adjustment. 4-128. Use the following procedure to calibrate the low and high frequencies gain. a. Set the 5200A MODE switch to OPERATE. The 5200A and 5205A OPERATE indicators illuminate. b. Perform the transfer test, adjusting R9 5200A LF GAIN (ikHz) for a transfer standard null at 0 ±0.01% taking the correction factor into account. c. Remaining in the 1000 Volt range set the 5200A output frequency to 100 kHz. d. Perform the transfer test, adjusting C14, 5200A HF GAIN (100 kHz) for a transfer standard nuU at 0 ±0.01% taking the correction factor into account. e. Set the 5200A MODE switch to STDBY. f. Set the 5200A and 5205A POWER switches to OFF and disconnect the test equipment. 4-129. Calibrator Mode Interconnect 4-130. An interconnect cable for use during the calibrator mode is supplied with each 5205 A. The cable connects J32 on the rear of the 5200A to the connector labeled 5200A on the rear of the 5205A. A diagram of the pin connections is shown in Fij^re 4-9. 4-22

4-131. Logic Trip Adjustment NOTE This setting monitors the logic supply voltage and is adjusted at the factory. It should not require normal calibration, however, adjustment could be required ifdrift within the circuit is sufficient to trip the instrument into FAULT. 4-1 30 If required, adjust the logic trip circuit using the following procedure; a. Verify that there are no jumper pcbs or jumpers installed in the 5205A and both power cords are connected to the line source. b. Connect the DVM Hi input to TP 409 (+5) and the LO input to TP 407 (GND). Prepare the DVM to read +5 volts dc. Both test points are located on the logic pcb. c. Connect a jumper between TP 418 and TP 417. (Located near the FAULT and OVERLOAD in- dicators on the Logic pcb.) d. Set the POWER switch to ON and wait 30 seconds for the warm-up period to expire. e. The DVM should read between 4.75 and 5.25V dc. f. Rotate R47 fully clockwise and then very slowly adjust until the fault indicator extinguishes. g. Check at high & low line voltage limits (nominal ±10%) that the Logic circuits +5 Volts is between +4.75 and +5.25 Volts dc and the instrument does not trip into FAULT. h. Set the POWER switch to OFF and disconnect the test equipment and jumper. 4-133. TROUBLESHOOTING 4-134. Troubleshooting for the 5205A consists of the tab- ular flow chart in Table 4-3. When a step on the flow chart is completed check for a decision transfer. If no decision is required perform the next step of the table in sequence. WARNING! Lethal vollages up to 2.5K Volts are present within the instrument during troubleshooting. In addition, the voltage may be present for up to 30 seconds after power is removed from the instrument. Before coming into physical contact with any component use a voltmeter and 5kV probe to insure there is no voltage present between tp502 (+2.5kV) and tpS03(LO), between tpS04 (—2.5kV) and tp506 LO), and between tp505 (-2.5kV) and tp506 (LO). All test points are on the Power Supply pcb. Extreme caution should be exercised at all times when working with this instrument. 4/76 4-23

STEP NO. ACTION Go to the step number given for correct response YES NO 1 Prepare the 5205A for troubleshooting by performing Equipment Preparation in paragraph 4-53. In addition remove the Preamplifier and Power Amplifier shields, then connect the Auxiliary Power line cord only to the line voltage supply. Do not connect the HV Power Line cord to a supply at this time. 2 1 1 I 1 ! Verify the Front Panel LOW and Ground terminals are connected with a shorting link, the POWER switch is in the OFF position, the CONTROL switch is in the LOCAL position and the MODE switch is in the STDBY-RESET position. i 3 Set the POWER switch to the ON position. 5 4 j With the test DVM LO connected to i P22 on the Preamp check for +15 ±0.1 V dc adjustable with R82 at tp1 1 and for —15 +0.4V dc at tp12. t _ ! Are both voltages within tolerance? 7 6 Check the 31V rms input from the Auxiliary Power Supply. Check the rectifier CR70, the applicable filter, series pass transistor, divider and the regulator circuit. Repair as required then repeat the test starting at step 4. 7 With the test DVM LO input at tp9 of the Preamplifier check for +25 +1 V dc at tpl 0. 8 Is the reading within tolerance? 10 9 9 Check the 21V rms input from the auxiliary power supply, the rectifier CR175 and its associated components. Repair as required then repeat the test starting at step 7. 10 With the test DVM LO input at tp7 of the Preamplifier check for —31 +1 V dc at tp17 and +30.5 +1 V dc at tpS. 1 Are both reading within tolerance? 13 12 12 Check the 40V rms input from the auxiliary power supply, the rectifier CR 182 and its associated components. Repair as required then repeat the test starting at step 10. 13 With the test DVM LO input at tp315 of the Power Amplifier check for +450 +5V dcat tp325, -25 +0.5V dc at tp321 and +24 +0.5V dc at tp 322. 14 Are all tiiree voltages within tolerance? 16 15 15 Check the 171V rms and 38V rms inputs from the auxiliary power supply. Check the rec- tifiers and their associated components. Repair as required then repeat the test starting at step 13. 16 With the test DVM LO input at tp303 of the Power Amplifier check for +440 +5V dc at tp304 and +14.5 +0.2V dc at tp 305. 4-24

STEP NO. ACTION Go to the step number given for correct response YES NO 17 Are both voltages within tolerance? 19 18 18 Check the 171V rms and 12V rms inputs from the Auxiliary Power Supply. Check the rec- tifier circuits and their associated components. Repair as required then repeat the test starting at step 16. 19 With the test DVM LO input at tp407 of the Logic Assembly check for 4-34 +1V dc attp405 and +5 +0.25V dc at tp409. 20 Are both voltages within tolerance? 22 21 21 Check the 21V rms and 8.5V rms inputs from the Auxiliary Power Supply. Check the respective rectifiers CR18 and CR17 and their associated components. Repair as required then repeat the test starting at step 1 9. 22 Set the POWER switch to OFF. 23 Perform or verify the preparation portion of the calibration procedure contained in paragraphs 444 through 4-59. Insure the Preamplifier and Power Amplifier shields are replaced. 24 Connect the HV Power Line cord to the autotransformer and set the autotransformer output voltage to the nominal line voltage. 25 Verify the Power switch is OFF, the CONTROL switch in the LOCAL position and the MODE switch is in the STDBY-RESET position. 26 Set the POWER switch to ON. 27 Did the INSTRUMENT ON, LOCAL and WARMUP indicators illuminate, are all other indica- tors extinguished and is the fan audible? (A momentary flash of the FAULT indicator is normal.) 31 28 28 Is the trouble the absence of a valid response? 29 30 29 If the fan is not audible check the Input auxiliary power, the POWER switch, the power jumper connections and the fan itself. If none of the indicators illuminate check the outputs of Transformer T3 in the Power Supply. If the incandescent lamp indicator INSTRUMENT ON does not illuminate check the bulbs and the +28V Power Supply on the Logic Assembly. For the LED indicators check the LEDs and the +5V Power Supply. Check the Warm-Up Delay circuit and CR24 if the WARMUP indicator does not illuminate and CR21 if the LOCAL in- dicator does not illuminate. Repair as required then repeat the test beginning at step 23. 30 Perform the applicable portions of the following step for die presence of an invalid response. If the FAULT indicator illuminates and stays illuminated check the logic inputs to the Fault Gate (U44 Logic Assy), including the signals that effect the gate by clearing the Trouble FF, or for the presence of an Operate Command from the Interface circuits. Use the Logic Trip Adjustment procedure in paragraph 4-129 to set the indication for the 4-5 volts if applicable. 4-25

STEP NO. ACTION Go to the step number given for correct response NO 30 {cx>nt} If the FAULT indicator illuminates after a delay of approximately 6 seconds check the Fault Gate input from the switch controlled by the Fan airspeed. If the OVERLOAD indicator illuminates check the disabling circuit between the Warm-Up Delay circuit and U8-1 1 on the Logic Assy. Repair as required then repeat the test beginning at step 23. 31 After a delay of approximately 30 seconds does the WARMUP Indicator extinguish, the FAULT and OVERLOAD Indicator remain extinguished and the STDBY-RESET indicator illuminate? 41 32 32 Does the STDBY-RESET indicator remain extinguished and the WARMUP indicator remain illuminated? 33 34 33 Check the enabling circuitry from the Warm-Up Delay. Repair as required then repeat the test beginning at step 23. 34 Are both the STDBY-RESET and WARMUP Indicators extinguished? 35 36 35 Check the Operate Flip Flop and its associated components. Repair as required then repeat the test beginning at step 23, 36 Are both the STDBY-RESET and FAULT indicators illuminated and the OVERLOAD in- dicator extinguished? 37 38 37 Check the inputs to the Fault Gate, especially the + Supply Current Monitor input to the comparator from the power supply assy. Repair as required then repeat the test beginning at step 23. 38 Are both the STDBY-RESET and OVERLOAD indicators illuminated and the FAULT in- dicator extinguished? 39 40 39 Check tile Overload Delay circuitry on the Logic Assy and its input from the Overload and Logic circuitry on the Preamplifier assembly. Repair as requried then repeat the test beginning at step 23. 40 When the STDBY-RESET, FAULT and OVERLOAD indicators are illuminated check the Overload Delay circuitry on the Logic Assy and Its input from the Overload and Logic circuitry on the Preamplifier assembly. Check the inputs to tiie comparators that control the Fault Gate and Trouble Flip Flop, Repair as required and then repeat the test beginning at step 23. 41 Set the MOD E switch to OPERATE. 42 Does the OPERATE indicator illuminate, the STDBY-RESET indicator extinguish and the FAULT and OVERLOAD indicators remain extinguished? {Disregard momentary flashes of the FAULT and OVERLOAD indicators during switching.) 50 43 4-26

STEP NO. ACTION Go to the step number given for correct response YES NO 43 Does the OPERATE Indicator fall to Illuminate, the STDBY-RESET indicator remains illumin- ated and the FAULT and OVERLOAD indicators remain extinguished? 44 45 44 Check the Operate Command through the Interface circuits and lf>e Operate Flip Flop. Repair as required then repeat the test beginning at step 41 . 45 Does the OPERATE indicator illuminate momentarily then extinguish, the STDBY-RESET indicator extinguish momentarily then illuminate, and the FAULT indicators illuminate? 47 46 46 For an OVERLOAD indication without a FAULT indication, check the input to the Overload Delay circuitry from the Preamplifier and the Input and Output stages of the Preamplifier and the Output stage of the Power Amplifier for loading. 47 To isolate the problem determine whether the fault is major or minor, as defined in the Theory of Operation, paragraph 3-36 through 3-45. Set the MODE switch to STDBY-RESET. If the FAULT indicator extinguishes the fault is minor and the MODE switch may be set to OPER- ATE. If the FAULT indicator remains illuminated the fault is major and the POWER switch must be set to OFF to clear the fault. Then resume operations by setting the POWER switch to ON and after the Warmup period the MODE switch to OPERATE. 48 Does the Fault remain after the circuitry has been reset at least once? 49 50 49 For a minor fault determine whether the input at U15-3, U15-4 or U15-5 is clearing the Operate FF, and from there back to the Fault Gate IU44), NEG HV or the Warm-Up Delay circuitry respectively. For an OVERLOAD indication in addition to the FAULT indication check the NEG HV and OVERLOAD inputs to the Fault and Overload Delay Circuitry from the Preamplifier Logic Circuitry. For a major fault determine whether the input at U15-9, U15-10 or U15-11 is clearing the Trouble FF, and from there back to the Operate Circuit U21 comparator, U22 comparator or SENSE HV circuitry respectively. Repair as required then repeat the test beginning at step41 . 50 Set the MODE switch to STDBY-RESET, the POWER switch to OFF and the Autotransformer output to zero volts. 51 WARNING! Lethal voltages are present during die following tests. Read the Test preparation and prepare the equipment as described in paragraphs 4-56. through 4-64 before continuing. Perform the Upper Tube Balance calibration starting at paragraph 4-65. 52 Are the readings on the oscilloscope and DVM adjustable with the stated Tolerances? 54 53 53 Check the Upper Tube stage and its regulating circuit. Repair as required then repeat the test beginning at step 51 . 54 Perform the Lower Tube Balance calibration starting at paragraph 4-67. 4-27

Go to the step number given ACTiON for correct response YES NO 55 Are the readings on the oscilloscope and DVM adjustable within the stated tolerances? 57 56 56 Check the Lower Tube stage and its regulated circuit. Repair as required then repeat the test beginning at step 54. 57 Perform the Output Stage Bias Current Calibration starting at paragraph 4-70. 58 Are the readings on the oscilloscope and DVM adjustable within the stated tolerance? 60 59 59 Check the output stage class AB Amplifier {Q1 1 and Q12) and their associated components. Repair as required then repeat the test beginning at step 57. 60 Perform the LED Loop Bias Current Calibration starting at paragraph 4-73. 61 Is the oscilloscope current display adjustable to within the stated tolerance? 63 62 62 Check the Power Amplifier 30mA current source stage. Repair as required then repeat the test beginning at step 60. 63 Perform the LED Loop Bandwidth Calibration starting at paragraph 4-76. 64 Is the oscilloscope current display adjustable to within the stated tolerance? 66 65 65 Check the Power Amplifier 30 mA current source stage. Repair as required then repeat the test beginning at step 63. 66 Perform the Screen Voltage Calibration starting at paragraph 4-79. 67 Is the Lower Tubes Absolute Screen Voltage adjustable within the stated tolerance? 69 68 68 Check the Lower Tubes screen regulator circuitry. Repair as required then repeat the test beginning at step 65. 69 Is the Upper Tube Absolute Screen Voltage adjustable within the stated tolerance? 71 70 70 Check the Upper Tubes Screen Regulator Circuitry. Repair as required then repeat the test beginning at step 66. Perform the Positive and Negative Current Trip Level Adjustment in paragraphs 4-82 thru 4-87. Are the Current Trip Circuits adjustable within the stated tolerance? 74 73 Check the Logic Assembly Fault and Comparator circuits and the input from the Power Supply. Repair as required then repeat the test starting at step 71 . 74 Perform the Preamplifier +15 Supply Voltage Calibration. Start with the preparation procedure in paragraph 4-89. 75 Are the ±15 Volt supplies adjustable within the stated tolerances? 77 76 76 Check the + 1 5 Volt power supply and its 31V rms input from the Auxiliary supply. Repair as required then repeat the test starting at step 74. 77 Perform the Preamplifier Minimum Negative High Voltage Trigger Level Calibration starting at paragraph 4-97. 71 72 73

STEP NO. ACTION Go to the step number given for correct response YES NO 78 Is the result of the test acceptable? 80 79 79 Check ihe —2.5kV input to the Preamplifier, the Logic Stage of the Preamplifier and the Fault circuits on the Logic Assembly. Repair as required then repeat the test starting at step 77. 80 Perform the Input FET Switch impedance Calibration starting at paragraph 4-100. 81 Is the FET switch impedance adjustable within the stated tolerance? 83 82 82 Check the Preamplifier input stage, in particular the input FET switch and its compensating network. Repair as required then repeat the test starting at step 80. 83 Perform the Preamplifier Overload Trigger Balance Calibration starting at paragraph 4-103. 84 Is the DC Balance adjustable within the stated tolerance? 86 85 85 Check the Power Amp 30 mA current source the Preamp output stage and the Preamp Input stage (input amp in particular). Repair as required then repeat the test starting at step 83. 86 Is the AC Balance adjustable within the stated tolerance? 88 87 87 Check the Preamplifier Input and Overload stages, in particular check the Slew Rate Sense Amplifier. Repair as require! then repeat the test starting at step 83. 88 Prepare the instrument for further calibration as outlined in the Calibration Point Adjustments (paragraph 4-106} and LOCAL/Remote Mode Calibration (paragraph 4-109} procedures. 89 Perform -^e DC Offset Calibration starting at paragraphs 4-112 . 90 Is the DC Offset adjustable within the stated tolerance? 92 91 91 Check the Preamplifier Input stage the Input amplifier in pariauclar. Repair as required then repeat the test starting at step 8Q. 92 Perform the LOCAL/Remote Mode DC Gain calibration starting at paragraph 4-115 . 93 Is the LOCAL/Remote Mode DC Gain within the stated tolerance? 95 94 94 Check the Preamplifier input stage, the Input and Feedback Resistor Network in particular. Repair as required then repeat the test starting at step 92. 95 Perform the LOCAL/Remote Mode Middle and High Frequency Gain Calibration starting at paragraph 4-118. 96 Is the transfer standard null obtainable to the stated tolerances? 98 97 4-29

Go to the step number given for correct response Check the Preamplifier Input stage the Input Amplifier in particular. Repair as required then repeat the test starting at step 93. Will the 5205A be used in conjunction with a 5200 AC Calibrator and is one available? Perform the Calibrator Mode Procedure starting at paragraph 4-122. Is the transfer standard null obtainable to the stated tolerances? Check the Preamplifier feedback circuits. If the 5205A has maximum output regardless of the 5200A setting check the sensing circuits {op amp, divider, cables and associated components). Repair as required then repeat the test starting at step 99. 99 102 102 101 102 Troubleshooting of the 5205A Power Amplifier is complete, if any component was replaced or an adjustment changed a calibration procedure should be performed. 4-30

TABLE OF CONTENTS TABLE ASSEMBLY NAME PART NO. PAGE 5-1 Final Assembly 336833 5-3 5-2 PCB Assembly, Mother 336818 5-17 5-3 PCB Assembly, Power Supply 362111 5-19 5-4 PCB Assembly, Logic 336826 5-21 5-5 Assembly, Preamplifier 397836 5-27 5-6 PCB Assembly, Preamplifier 353656 5-29 5-7 PCB Assembly, Preamp Tube Anode 397281 5-39 5-8 Assembly, Power Amplifier 341511 5-40 5-9 PCB Assembly, Power Amp Upper Tube 336875 542 5-10 PCB Assembly, Power Amp Lower Tube 336800 546 5-11 PCB Assembly, Lower Tube Screen Regulator 362137 548 5-12 PCB Assembly, Power Amp Tube Mounting 336834 5-50 5-1

down of the instrument. Components are listed alpha- numerically by assembly. Electrical components are listed by item number. Each listed part is shown in an accompany- ing illustration. 5-3. Parts lists include the following information; a. Reference Designation or Item Number. b. Description of each part. c. Fluke Stock Number. d. Federal Supply Code for Manufacturers. (See Section 7 for Code-to-Name list.) e. Manufacturer’s Part Number or Type. f. Total Quantity per assembly of component. g. Recommended Quantity: This entry indicates the recommending number of spare parts necessary to support one to give instruments for a period of two years. This list presumes an availability of common electronic parts at the maintenance site. For main- tenance for one year or more at an isolated site, it is recommended that at least on of each assembly in the instrument be stocked. In the case of optional sub-assemblies, plug-ins, etc. that are not always part of the instrument, or are deviations from the basic instrument model, the REC QTY column lists the recommended quantity of the item in that par- ticular assembly. h. Use Code is provided to identify certain parts that have been added, deleted or modified during pro- duction of the instrument. Each part for which a use code has been assigned may be identified with a particular instrument serial number by consulting the Use Code Effectivity, paragraph 5-7. 54. HOW TO OBTAIN PARTS 5-5. Components may be ordered directly from the man- ufacturer by using the manufacturer’s part number, or from the John Fluke Mfg. Co., Inc. factory or authorized repre- sentative by using the FLUKE STOCK NUMBER. In the event the part you order has been replaced by a new or im- proved part, the replacement will be accompanied by an ex- planatory note and installation instructions, if necessary. 5-6. To ensure prompt and efficient handling of your order, include the following information; a. Quantity. b. FLUKE Stock Number. c. Description. d. Reference Designation or Item Number. e. Printed Circuit Board Part Number. f. Instrument Model and Serial Number. 5-7. USE CODE EFFECTIVITY LIST USE CODE SERIAL NUMBER EFFECnVITY 5-2

REF DESIG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY REC OTY USE CDE FINAL ASSEMBLY {Figure 5-1 thru 5-9) Power Switches View (Figure 5-1) 101 Angle, Power Switch 336701 89536 336701 1 102 Bracket, Angle 356030 89536 356030 1 103 Bracket, Center 400887 89536 400887 1 104 Bracket, Power Switch 336693 89536 336693 1 105 Coupler, Disc. 360537 89536 360537 i 106 Switch, Toggle 326363 27191 8822K20 2 Rear Panel View (Figure 5-2) 201 Bushing, Strain Relief, Aux line 436394 28520 SR6P3^ I 202 Bushing, Strain Relief, HV line 102194 28520 SR-8P-2 1 203 Connector, Female, 3 prong 247015 73586 M-1538GS i 204 Cord Set, Auxiliary 409920 89536 409920 1 205 Cord Set, High Voltage 409912 89536 409912 1 206 Fuse Holder 407775 75915 341-OOlAL 2 207 Fuse, Slo-BIow, 5A (Aux Supply) 109215 71400 MDA-TYPE 1 208 Fuse, Slo-Blow, 15A (HV Supply) 392936 71400 MDA-TYPE 1 209 Handle, Comer 295691 89536 295691 4 210 Hole Plug, Snap Button, 14” 441311 HEYCO P-375 1 211 Hole Plug, Snap Button, 5/8” 407502 HEYCO P-625 1 212 Panel, Rear 336446 89536 336446 1 213 Plate, Rear 336495 89536 336495 1 214 Plate, Spacer 336966 89536 336966 1 215 Strap, Rubber, Mousetail 104794 98159 2829-115-3 1 4/76 5-3

DESCRIPTION FLUKE STOCK NO. MFC FED SPLY CDE MFC PART NO. TOT REC USE OR QTY QTY CDE TYPE Front Pane! View (Figure 5-3) Betel, Window, HV Symbol Betel Window, Operate Bracket, corner angle Binding Post, Black Binding Post, White Cable, local input Clamp, cable storage Connector, BNC, Female, H x 28 or Connector, BNC, Female, 3/8 x 24 NOTE: Check diameter of hole in Front Panel before ordering replacement connector. Decal, Fluke Logo and Ser. No. Decal Title Diffuser Extrusion, Front Panel, Screened Housing, Cable Plug Panel Front Shorting link Spacer, Cable Storage Tube Chamber View (Figure 5-4) Card Guide Switch, Air Tube Chamber Assy. Left Side View (Figure 5-5) 341768 367656 298141 275560 275586 349597 346742 386888 414201 194183 343368 351338 341750 346536 336438 190728 346726 229047 417602 337402 341768 367656 298141 82045 820-25 349597 346742 KC76-67 31-010 194183 343368 351338 341570 346536 336438 21171 346726 1800F 417402 337402 Bracket, Angle Cable, Assy. Relay Armature Sidewall, Left Switch, Pushbutton Tap Board 166322 349589 387415 336529 408500 349589 425BXXW 336529 E69-30A 5-6

5-7 NOTE: ITEMS ILLUSTRATED BUT NOT CALLED OUT ARE COMMON HARDWARE.

REF DESIG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE gn REG QTY USE CDE Power Supply View {Figure 5-6) ciu C12 Cap, Oil filled 4 uF ±15%, 400V 387431 00646 CKM240-4M53 C13 Cap, Oa fiUed, i uF±l0%, 400V 387423 00686 CKM2-40-1M 1 T3 Transformer, Preamp 336917 89536 336917 I T4 Transformer, Power Amp 397844 89536 397844 1 601 Assy, PCB, Mother 336818 89536 336818 I 602 Assy, Bleeder Power Amp 401000 89536 401000 2 Ri thru R5 Res, comp, 1M + 10%,2W 136671 01121 HB3341 5 603 Assy, Bleeder, Preamp 400994 89536 400994 1 Rl thru R5 Res, comp, 330k ±10%, 2W 208227 01121 HB1051 5 604 Bracket, fan 336552 89536 336552 1 605 Bracket, Transformer 336453 89536 336453 1 606 Cable Assy, Preamp HV 349517 89536 349517 1 607 Cable Assy, Neg HV 346601 89536 346601 1 608 Cable Assy, Pos HB 346569 89536 346569 1 609 Clamp, HV 419473 89536 419473 1 610 Instmment Bottom 336479 89536 336479 1 6li Shaft, Power Switch 400960 89536 300960 1 Low Capacity View (Figure 5-7} T2 Transformer, Lo Cap 336909 89536 336909 1 701 Bulkhead, Central 336461 89536 336461 1 702 Clamp, Lo Cap Xfmr 400895 89536 400895 1 703 Screen 401034 89536 401034 1 5-10

REF DESIG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY REC QTY USE CDE Interior View {Figure 5-8) T1 Transformer, Hi-Voltage 336891 89536 336891 1 801 Assy, Power Amp. 341511 89536 341511 1 802 Assy, Preamp 397836 89536 397836 1 803 Assy, Lo^c PCB 336826 89536 336826 1 804 Assy, Power Supply PCB 362111 89536 362IH 1 1 805 Airduct 400861 89536 400861 1 806 Blower 330068 82877 VS37A2-12 1 807 Cable Assy, Control , (P5 to P4I , J25 & J26) 346544 89536 346544 I 808 Cable Assy, Output 341552 89536 341552 I 809 Cable Assy, Remote (P7 to P42) 346056 89536 346056 i 810 Qamp, Cable, Nylon (Not illustrated 102265 06383 SST-2 1 rear of Front Panel) 811 Cover, bottom 336677 89536 336677 1 812 Decal, Danger 336859 89536 336S59 813 Decal, Knob, Black 341453 89536 341453 814 Decal, Knob, Green 341339 89536 341339 1 815 Fan Intake, Bellmouthed 336503 89536 336503 1 816 Fan nut plate 336545 89536 336545 1 817 Filter intake 402834 89536 402834 1 818 Frame, Filter 400945 89536 400945 1 819 Foot, Bail Stand 292870 89536 292870 6 820 Foot insert, Nonskid 420422 89536 420422 6 821 Plate, Power Transformer 400309 89536 400309 1 822 Hate, Spacer 336966 89536 336966 I 823 Spring Qip 330134 02660 17-529 2 824 Spacer 403071 89536 403071 1 5-13

REF DESIG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO, OR jYPE TOT OTY REC QJY USE CDE Exterior View (Figure 5-9) 901 Cover, Low Capacity Chamber 336636 89536 336636 1 902 Cover, Right Side 337410 89536 337410 1 903 Cover, Top 336669 89536 336669 1 904 Cover, Transformer 336644 89536 336644 1 905 Cover, Tube Chamber 336594 89536 336594 I 906 Decal, Corner 296293 89536 . 296293 4 1 907 Decal, Handle Trim 295527 89536 295527 4 90S Decal, Side Trim 295402 89536 295402 2 909 Decal, Danger 336719 89536 336719 2 910 Decal, HV 349464 89536 349464 1 911 Decal, Ground 349456 89536 349456 1 912 Shield, Preamp 353425 89536 353425 1 913 Sidewall, Right 336537 89536 336537 1 914 Kit Accessory (Not illustrated) 346528 89536 346528 1 Cable Assy Interconnect (5205A to 5200A) 341560 89536 341560 1 PCB, shorting 400762 89536 400762 3 (FoHowing 3 items are suppHed for local manufacture of a remote connector, if required.) Connector, cable, plug w/socket 347625 71468 DE-9S 1 Connector, back shell 352724 02660 17-1370 1 Spring Qip 330134 02660 17-529 1 5-15

903 5205A 5-16 Figure 5-9. EXTERIOR VIEW NOTE: ITEMS ILLUSTRATED BUT NOT CALLED OUT ARE COMMON HARDWARE.

REF DESiG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY PCB ASSY. MOTHERBOARD (Figure 5-10) 336818 89536 336818 REF El Protector, Spark Gap 198507 25088 B1F90 I J20, J21 Connector, 9 position/2 removed 352682 00779 583694-2 2 J22 Connector, 3 position 291625 00779 583650-i 1 J23 Connector, 6 position 291898 00779 583650-2 1 J30 Connector 5 position/ 1 removed 404020 00779 583694-7 1 J31 Connector 20 position/6 removed 403980 00779 583694-3 1 J43 Connector 15 position 291948 00779 583650-7 1 J44, J45 Connector 5 position 403964 00779 583407-6 2 J50 Connector 1 1 position/2 removed 404012 00779 583694-6 1 J51 Connector 9 position/4 removed 403998 00779 5836944 1 J52 Connector 1 1 position/2 removed 404004 00779 583694-5 1 J53 Connector 7 position 403972 00779 583407-8 1 J54, J56 Connector 4 position/ 354951 00779 583407-5 2 OL Connector, Black 149112 74970 105-0753 1 Chas GND Connector, Green 149120 74970 105-0754 1 VRl, VR2 1 Diode Zener 113365 31483 ; 694978 i 2

{Fi^re 8-2} 362111 89536 362111 REF Cl CRl thru CR4, CR7, 1 CR17, CR18, CR25, CR26 Capacitor, elect, 1 0 ± > 300V Diode 340885 368738 56289 04713 500D106F- 300DC7 1N4004 1 9 n n 73 p3 00 0\ Diode 203323 07919 TD 8253 2 CRII thru CR16, CR21 thru CR24 Diode 268433 04713 MR250-5 10 J61, J64 Connector, 4 pin 385443 27264 09-65=1041 2 J62, J63, 365, 366, J67, 369 Connector, 2 pin 413914 27264 09-65-1041 I 6 J68, J70, J71 Connector, 15 pin 310094 27254 03-09-2151 ^ Ql, Q3 Transistor 218511 95303 65120 2 Q2 Transistor 284448 89536 284448 1 Rl, R20 Res, comp, 220 ±5%, %W 147959 01121 CB2215 2 R2 Res, comp, 220k±5%,m 108217 01121 CB2245 1 5-19

REF DESIG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY REC QTY USE CDE H3 com, 8.2k +5%, 160796 01121 CB822S 1 R4 Res, comp, 3.3k +5%,W 148056 01121 CB3325 1 R5 Res, comp, 470k ±5%,W 108969 01121 EB4745 1 U1 Opto-Isolator 380014 29013 MCT-2 1 VR5 Diode, zener, 1 lOV 392878 07910 1N986B 1 Connector Pin 342998 27269 02-09-1118 31 Guide, retainer 341115 89536 341115 3 Heat Sink (Q3) 104562 05820 NF-209 1 Transipad (Ql, Q2, Q3) 152207 07047 10123DAP 3 5-20

PCB ASSY, LOGIC (Figure 8-4) Assy, LED Standoff Assy, Voltage Lamps Bracket, HV Lamps Plug, Banana Socket, Bayonet Base Assy, Operate Lamps Mounting, Operate Lamps Hug, Banana Socket, Lamp Cap, fxd, cer, 0.05 ijf±20%, 1 OOV Cap, fxd, Ta, 15 /if±20%, 6V Cap, fxd, Ta, 6.8 Mf±10%, 35V Cap, fxd, cer, 0.1 Mf ±20%, lOOV Cap, fxd, Ta, 1 /if ±20%, 35V Cap, elect, 47 /if-10/+50%, 25V Cap, elect, 1000 /if-10/±50%, 16V FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY 346338 89536 346338 REF 341594 89536 341594 7 400986 89536 100986 1 400747 89536 400747 1 352716 83330 431 2 103523 95213 7-08 2 400978 89536 400978 1 400739 89536 400739 1 352716 83330 431 3 184002 95263 7-12 2 149161 56289 55C23A1 9 161935 56289 196D156X- 0006 1 182782 56289 150D685X903- 582 5 149146 56289 33C416B 5 161919 56289 196D001X- 03582 4 168823 25403 ET470X0025 A4 1 193896 25403 ET102X016 A02 3 5-21

p- — — REF ! DESiGj On i DESCRiPTION n“£{vi j hO. 1 \ t-LUK£ STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY REC QTY USE CDE C2.^ C-.C Cipj eUct, 47C ^iF~i0/+50%, 40V Cap. fxd. Ta 2.2 jxF±20%, 15V 185868 364216 25403 56289 ET47 1X040- A02 196D225X015- HAl 1 1 1 Cap, fxd, Ta, 0.33 ;:F±20%, 35V 408690 56289 196D334X035- HA 1 Cvl C45 1 Cap, fxd, Ta, 0.47 mF ±20%, 35V 161349 56289 196D474X035- HAl 2 C43 Cap, fxd, Ta, 4.7 /uF ±20%, 25V 161943 56289 196D475X025- KAl 1 CSC ] Cap , fxd, TA, 1 0 pF ±20%, 1OV 176214 56289 196D106X010- KAl 2 C48, C52 i Cap, fxd, cer, 0.01 ^F ~20/+80%, I OOV 105668 )0656 C023B501J103 M 2 C53 Cap, fxd, plastc, 5 ^F ±5%, 150V 364190 10908 Type X564 1 C54 Cap,Ta, elect, 220 mF± 10%, lOV 182840 56289 150D227X901- 0S2 1 1 C98, Cl 02 Cap, Ta, elect, 68 mF±IO%, 15V 182824 56289 150D686X90i- 5R2 2 1 CRIO thru CR13, CRI6, CR30, CR40, CR42, CR43, CR74, CR97, CRiOi Diode, Si, Hi-Speed switching 203323 07910 TD8253 12 3 CR17, CR18 Rectifier, bridge 296509 09423 FB200 2 1 CR21 thru CR27 Diode, light emitting 309617 07263 FLV102 7 2 CR4: 1 Diode, Si 348177 07263 FD7223 1 1 5-22

REF DESIG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY REC QTY USE CDE D1 thru DS4 Lamp, Incandescent 186346 71744 CM1819 4 K1 Relay, dry reed 357566 71707 UF40069 1 L1,L2 Choke, H turn 379222 89536 379222 2 Q1,Q2 Xstr, Si, NPN, power 343970 04713 MPS-U06 2 1 Q3,Q10 Xstr, Si, NPN 218396 04713 2N3904 2 1 Q4 Sxtr, Si, PNP 288761 01295 SK6808 1 1 Q5 Xstr, Si, NPN 203489 03508 IlC-2322 1 1 R1,R2, R4,R13 Res, fed, comp, 2k ±5%, OT 202879 01121 CB2025 4 R3,R21, R25, R27, R28, R38, K39, R40, R65, R83 Res, fed, comp, 4.7k ±5%, 148072 01121 CB4725 10 R5, R120, R122 thru R125 Res, fed, comp, 33 +5%,W 175034 01121 CB3305 6 R6,R10, RIU^O R26, R30, R35, R36, RlOO, RlOl, R105, RI06, RllO, Rin, R112, R116, R127 Res, fed, comp, 220 ±5%, 147959 01121 CB2215 17 5-23

OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY Rss, ficdj comp, 10k ±5%,W 148106 01121 CB1035 15 Res, fxd, comp, 270 ±5%, 159616 01121 EB27I5 2 Res, var, cermet, 20k±I0%, 355529 11236 362S203AZ 1 Res, var, cermet, 100k ±10%, iiW 355537 11236 362S104AZ 2 Res, fxd met film, 30. ik±l%, 1/8W 168286 91637 MFF1-83012F 1 Res, fxd, met film, 365k ±1%, 1/8W 289520 91637 MFF1-83653F 1 Res, fxd, met film, 383k ±1%, 1/8W 288498 91637 MFF1-83833F 1 Res, fxd, comp, 100 + 5%, %W 147926 01121 CB1015 4 Res, fxd, comp, 3.3k +5%, IdW 165761 01121 CB332S 1 Res, fxd, comp, 2.2k ±5%, 14W 148049 01121 CB2225 1 Res, fxd, comp, 5.6k ±5%, 148080 01121 CB5625 1 Res, fxd, comp, 22k + 5%, 14W 148130 01121 CB2235 3 Res, fxd, met film, 187k + 1%, 1/8W 289462 91637 MFF1-81S73F 1 Res, fxd, met film, 48.7k + 1%, 1/8W 267385 91637 MFF1-81502F Res, fxd, met flm, 15k ±1%, 1/8W 285296 91637 MFF1-81502F 7 5-24 4/76

REF DESIG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY REC QTY USE CDE R72, R80, R202 Res, fxd, comp, Ik ±5%, 148023 0U21 CB1025 3 R77 Res. fxd, mat film, 909 ±1%, 1/8W 312629 91637 MFF1-S9090F 1 RSLR RS2, R121 Res, fxd, comp, 390 +5%, V4W 147975 01121 CB3915 3 1^7 Res, fxd, comp, 10 ±5%, 147868 01121 CB1005 1 R91 Res, fxd, met film, 22.1k ± 1%, 1/8W 235234 91637 MFF1-82212F 1 K92 Res, fxd, met film, 42Ik±l%, 1/8W 276626 91637 MFFI-84223F 1 R93 Res, fxd, met film, 316k +1%, 1/8 289496 91637 MFF1-83163F 1 R96 Res, fxd, comp, 33k ±5%, 1/8W 148155 01121 CB3335 1 R97 Res, fxd, comp, 100k ±5%, %W 148189 01121 CB1045 1 R126, R130 Res, fxd, comp, 56k ±5%, 54W 170738 01121 CB5635 2 R129 Res, fxd, comp, 6.8M±5%, 394064 01121 CB6865 1 R201 Res, fxd, comp, 30k +5%, 14W 193417 01121 CB3035 1 S1,S2 Switch, gain and Cont. 335687 89536 335687 2 U1 IC, TTL, Dual HAND 352690 01295 SN7413N 1 1 U2 1C, TTL, Hex, Inverter 379305 01295 SN7405N 1 1 U3, U7 IC, TTL, Dig. Quad 2-input positive NAND Gales 292961 01295 SN7403N 2 1 U4 IC, TTL, Hex Inverter 292979 01295 SN7404N 1 1 U5,U20 IC, TTL, Hex Inverter, Buffer &Driver 288605 01295 SN7416N 2 1 U8 IC, TTL, Quad, 2-Input, Positive NAND 310201 01295 SN743SN 1 1 UIO, U43 IC, TTL, Quad, 2-Input 292953 01295 SN7400N 2 1 Ui4 IC, TTL, Quad, 2-Input Pos OR Gate 342709 01295 SN7432N 1 1 U15 IC, TTL, Triple-3-Input Positive NAND 363465 01295 SN7412N 1 1 U21, U22 IC, linear. Quad comparator 387233 12040 LM339N 2 1 U25 IC, linear, Voltage Regulator 327981 12040 LM309K 1 1 4/76 5-25

REF DESIG OR ITEM NO. FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY REC QTY U30 thm U33 Opto isolator 387076 50579 ILD-74 4 I U40 IC, TTL, SSI, Hex/Quad 354886 01295 SN7414N 1 1 U41 IC, TLX, IXial J“K Tripled, Flip-Flops 293100 01295 SN74H106N 1 1 U42 IC, Linear, Dual Timer 387407 18324 HESS6A 1 1 U44 IC, TTL Positive HAND Gates, 8-Input 293019 01295 SN7430N 1 1 VR3, VR6 Diode, zener 180455 07910 IN749A 2 I VR14 Diode, zener 172148 12065 1N3496 1 1 XU14, XU15, XU22, XU42 Socket, IC 291542 00779 583527-1 5 Bracket, lamp 400754 89536 400754 2 Heatsink 342675 13103 600382 I Jack, banana, nylon 162(^5 74970 108-902 5 Transipad, Xstr 152207 07047 10123DAP 1 5*26

FLUKE STOCK IMO. MFC MFG FED PARING. TOT REC USE SPLY OR QTY QTY CDE CDE type Assembly, Pre-amplifier (Figure 5-11) 397836 89536 397836 PCB Assembly; Pre Amp (Refer to Table 5-6) 353656 89536 353656 PCB Assembly; Pre Amp Tube Anode 397281 89563 397281 (Refer to Table 5-7) Cable Assembly, Sense 349555 89536 349555 89536 337444 5-27

5205A REF DESIG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY REC QYY USE CDE PCB ASSEMBLY, PRE AMP {Figure 8-6a) 353656 89536 353656 REF PCB Assembly, Zener String (See end of table) 362129 89536 362129 1 Cl Cap, fxd, Ta, 22 uF ±20%, 35V 394775 56289 196D226X0035 T 1 C6,C8, C9,C26, cm, C133, C176' Cap, fxd, cer, 0.01 uF +20%, lOOV 149153 56289 C023B101F103 M 7 C7, C200 Cap, fxd, mica, 22 pF +5%, 500V 148551 71236 DM15C220J 2 CIO, CI24 Cap, fxd, mica, 150 pF +5%, 500V 148478 71236 DM15F150 2 CIl, C12, C84 thru C87 Cap, fxd, Ta, 22 uF ±20%, 20V 357780 56289 196D226X0020 P 6 C13 Cap, fxd, mica, 8 pF ±10%, 500V 216986 71236 DM15C080K 1 C14, C143 Cap var, poly propyl, 2 - 22 pF 369207 80031 C010KA/20E 2 CIS, C79, C123 Cap, fxd, mica, 100 pF +5%, 500V 148494 71236 DMI5F10U 3 C25 Cap, fxd, mica, 1000 pF +5%, SOOV 148387 71236 DM19F102J 1 C27 Cap, fxd, piste, O.OI uF +10%, 50V 309906 06001 75F1R4A001 1 C41 Cap, fxd, piste, 0.0039 uF ±10%, 50V 386847 06001 75F1R5A392 1 C46, C51 Cap, fxd, Ta, 6.8 uF ±20%, 35V 363713 56289 196D685X0035 K 2 C64, C65, C156 Cap, fxd, cer, 0.05 uF ±20%, lOOV 149161 56289 55C23A1 3 C67 Cap, fxd, mica, 56 pF ±5%, 500V 148528 71236 DM15E560J 1 C70, C71 Cap, fxd, elect, 470 uF — 10/+50% 40V 185868 73445 ET47 1X040A02 2 1 5-29

REF DESiG OR ITEM DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TOT QTY REC QTY a TYPE C72, Cap, fxd, cer, 2000 pF ± gmv, 1 IKV 105569 71590 DA140-139CB C73 Cap, fxd, mica, 30 pF ±.S%, 500V 340570 71236 DM15E300J 1 CIS Cap,fxd,Ta, luF±20%,35V 161919 56289 196D105X0035 I C91 Cap, fxd, cer, IpF +20%, 4000V 393892 32897 S58-000-COK10 I 9M C92 Cap, fxd, piste, 0.22 uF +10%, 50V 271874 06001 75F4R5A224 1 C94 Cap, fxd, Ta, 15 uF +20%, 6V 161935 56289 196D156X0006 1 C105, C106 Cap, fxd, mica, 360 pF + 1%, 5(K)V 170407 71236 DM15F361F 2 C128, C161 Cap, fxd, cer, 0.1 uF +20%, lOOV 149146 56289 33C41B6 2 C132 Cap, fxd, mica, 5.6 pF +5%, 500V 329631 71236 DM15C560J 1 Ci35 Cap, fxd, Ta, 4.7 uF ±20%, 25V 161943 56289 196D475X0025 J 1 C145, C146 Cap, fxd, mica, 33 pF +5%, 500V 160317 71236 DM15E330J 2 C147 Cap,vari,polypropl, 5 - 50 pF+ , lOOV 408245 80031 HTlOMA/550 1 C148 Cap, fxd, mica, 480 pF + 1%, 500V 182931 71236 DM19E481F 1 C155 Cap, fxd, mica, 2200 pF +5%, 500V 148346 71236 DM19F222J 1 C1S7 Cap, fxd, mica, 27 pF +5%, 500V 177998 71236 DM15E270J 1 C159 Cap, fxd, mica, 4700 pF +5%, 500V 208975 71236 DM19F472J 1 C174, C185 Cap, fxd, cer, 0.1 uF -20/+80% 500V 105684 56289 41C92 2 C175 Cap, fxd, elect, 50 uF ~10/+75%, 50V 105122 562S9 30D505G050BC 1 1 C180, C193 Cap, fxd, MTL Polyester, 0.01 uF +20%, 4KV 403048 84411 X663F010204K: V 2 C181 Cap, fxd, cer, 100 pF +20%, 2KV 306357 04222 HVD4-100202K VI 1 C182, C183 Cap, elect, 220 uF -i0/+50%, 40V 178616 73445 ET22 1X040AO 1 2 1 C192 Cap, fxd, ceram,47 pF + 10%, 2KV 282145 04222 HVD347102KV 1 5-30

REF DESIG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFC FED SPLY CDE MFC PART NO. OR TYPE TOT QTY REC QTY USE CDE CR35, CR36. CR51, CR53, CR54, CRI03 thru CR106, CRI25, CRI26, CR132, CR151, CRI52, CR157, CR183, cRias, CR192, CR202, thru CR209 Diode, Hi-speed, switching 203323 07910 TD8253 26 5 CR70, CR175, CR182 Diode, Rectifier bridge 296509 09423 FB200 3 1 CR92, CRI21 thru CR124, CR154, CR155 Diode, Si, low cap 375907 07263 FD7222 7 2 CRIOI, CR102 Diode, Si, Schottky Barrier Switching 313247 51174 HP5082-6264 2 1 J24,J25, J26 Ki Conn, Coax Relay, dry reed 394239 387290 98291 71707 51-151-0000 UF40081 3 1 U1,L12 L51T^85 L86 Choke, 6 turn 320911 89536 320911 5 Q7 Xstr, FET, D-MOS, N-Channei 394122 18324 SD210 I 1 4/76 5-31

REF DESIG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY REC QTY USE CDE H 045, 077, QIOI, Xstr,Si,PNP 195974 04713 2N3906 10 2 0102, 0103, 0106, QI47 Q40, 051, 092, 093, 0105, 0138, Xstr, Si, NPN 218396 04713 2N3904 11 3 0161, 0176, 0183, 0184, 0185 043 Xstr, Si, NPN 329698 07263 2N2484 1 1 050, 062 Xstr, Si, NPN 203489 07910 CDQ10656 2 1 Q76 Xstr, Si, PNP, pwr 325753 03508 D45C5 1 1 Q79 Xstr, Si, NPN, pwr 325761 03508 D44C5 1 1 0104 Xstr, Si, NPN 295717 24355 00117 1 1 0121, 0122 Xstr, FET, D-MOS, N-channei 393587 18324 CP302 1 1 0128 Xstr, FET, Junction, N-channel 288324 12040 SF50070 1 1 0132 Xstr, Si, PNP 229898 04713 MPS6522 1 1 0140 Xstr, Si, NPN 333898 04713 MPSHIO 1 1 0148 Xstr, Si, PNP 392985 07263 2N3931 I 1 0177, 0182, 0186, Xstr, Si, NPN 346916 07263 2N2219A 4 1 0187 R1,R2 Res, fxd, comp, 750 ±5%, 14W 218024 01121 CB7515 2 5-32 4/76

REF DESIG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY REC OTY USE CDE R3.R41 , R44, R92, R97 Res, fxd, comp, 1 .5K ±5%,W 148031 01121 CB1525 5 R5 Res, var, cer, 100 ±10%, 381913 32997 3299W-1-101 1 R6 Res, fxd, met fiim,49.9K±l%, 1/8W 268821 91637 MFF1-84992F 1 R7 Res, fxd, met film, 5.23K ±1%, 1 /8W 294876 91637 MFF1-85231F 1 R8 Res, fxd, met film, 71.5K ±1%, 1/8W 291435 91637 MFF1-87152F 1 R9, R123 Res, var, cer, 200K ±10%, 14W 381921 32997 3299W-1-204 2 Rll Res, fxd, comp, 27K ±5%, 14W 148148 01121 CB2735 1 R12, RS3 Res, fxd, comp, 5 IK ±5%, %W 193334 01121 CB5135 2 R14 Res, fxd met film, IK ±1%, 1/8W 168229 91637 MFF1-81001F 1 R!5 Res, fxd, met film, 2.55K ±1%, 1/8W 325498 91637 MFF1-82551F 1 R21 Res, fxd, met film, 14K ±1%, 1/8W 379057 91637 MFF1-81402F 1 R22 Res, var, cer, IK ±10%, 14W 393728 32997 3299W-1-102 1 R23 Res, fxd, met film, 63.4 ±1%, 1/8W 393421 91637 MFF1-863R4F 1 R24, R25 Res, fxd, met film, 15K ±1%, 1/8W 328161 91637 MFF1-81502F 2 R26, R197 Res, fxd, met film, 806 ±1%, 1/8W 223552 91637 MFF1-88060F 2 R27, R28, RI37, R158, R190 Res, fxd, comp, IM ±5%, %W 182204 01121 CB1055 5 R29, R48, R159, R164 Res, fxd, comp, lOK ±5%, HW 148106 01121 CB1035 4 R35, R45 Res, fxd, comp, 68K ±5%, %W 148171 01121 CB6835 2 R36 Res, fxd, comp, 220K ±5%, IdW 160937 01121 CB2245 1 5-33

REF DESiG OR ITEM NO. DESCRIPTION FLUKE STOCK NO. MFG FED SPLY CDE MFG PART NO. OR TYPE TOT QTY REC QTY USE CDE Res., fxd, comp, 4.7K ±5%, iiW 148072 01121 CB4725 3 R38, R53, R54, Res, fxd, comp, 220 ±5%,W 147959 01121 CB2215 4 R136 R40, RI27 Res, fxd, comp, 47K ±5%,W 148163 01121 CB4735 2 R42, R46, R47, R75, R121, Res, fxd, comp, 100 +5%, 147926 01121 CB1015 8 R12S, R1S5, Ri91 R43, R52 Res, fxd, comp, 22K ±5%, 14W 148130 01121 CB2235 2 R49 Res, fxd, comp, 2.2K ±5%,W 148049 01121 CB2225 1 R50 Res, fxd, comp, 1 -2K ±5%,W 190371 01121 CB1225 1 R51 Res, fxd, comp, 5.6K ±5%, Va^ 148080 01121 CB5625 1 R59, R91 Res, fxd, met film, 9.53M ±1%, IW 394098 91637 MFF1-89534F 2 R6G Res, fxd, comp, 2K +5%,m 169854 01121 EB2025 1 R6i, R62 Res, fxd, comp, 1 .2K ±5%, IW 109892 01121 CB1225 2 R63, R66 Res, fxd, met film, 10K±1%, 1/8W 168260 91637 MFF1-81002F 2 R64, R6S Res, fxd, met film, 20K±1%, 1/SW 291872 91637 MFF1-82002F 2 R67 Res, fxd, met film, 56.2K + 1%, 1/8W 271346 91637 MFF1-S5622F R72 Res, fxd, comp, 120K ±5%, 193458 01121 CB1245 R73, R74, R133, Res, fxd, met film, 7.5K +1%, 1/8W 223529 91637 MFF1-S7501F 5 R134, R156 5-34

5205A REF DESIG OR ITEM NO. DESCRIPTION R76 Res, fxd, comp, 2K ±5%, R77 Res, fxd, comp, 8.2 ±5%, OT R78 Res, fxd, comp, 2.4K±5%, 14W R79 Res, fxd, comp, 3.9 ±5%, i4W R80 Res, fxd, met film, 5.11K±1%, 1/8W R81 Res, fxd, met film, 4.22K ±1%, 1/8W R82, R154 Res, var, cer, IK ±10%, %W R94, R95, R140, R141, R151 Res, fxd, comp, IK ±5%, %W R96, R106, R107, R157 Res, fxd, met film, 1.5K±1%, 1/8W R98 Res, fxd, comp, 33K ±5%, %W RlOl, R102, R143, R193 Res, fxd, met film, 1 .82K ±1%, 1 /8W R103 Res, mxd, met film, 3.01K + 1%, 1/8W R104, R105 Res, fxd, met film, 40.2 ±1%, 1/SW R108 Res. fxd, met film, 147 ±1%, I/SW R109 Res, fxd, met film, 267 ±1%, 1/SW RllO Res, fxd, met film, 2J7K ±1%, 1/8W Rill Res, var, cer, 100 ±10%,W R122 Res, fxd, met film, I50K ±1%, 1/8W R124 Res, fxd, met film, 10+1%, 1/8W R125 Res, fxd, comp, 5. IK +5%, %W R126, R129 Ref, fxd, met film, I.91K ±1%, 1/SW R130 Res, var, cer, 500 ±10%, 16W FLUKE STOCK NO. 202879 246751 193433 268722 294868 168245 275750 148023 313098 148155 293670 312645 245373 288415 386821 293720 275735 241083 268789 193342 236877 325613 MFC FED SPLY CDE 01121 01121 01121 01121 91637 91637 71450 01121 91637 01121 91637 91637 91637 91637 91637 91637 11236 91637 91637 01121 91637 11236 MFG PART NO. TOT REC USE OR QTY QTY CDE TYPE CB2025 CB82G5 CB2425 CB39G5 1 MFF1-85111F 1 MFF 1-8422 IF 1 360T102A CB1025 MFFi-81501F CB3335 MFF1-81821F MFF1-83011F MFF1-840R2F MFF1-81470F 1 MFF1-82670F 1 MFF1-82371F 1 360T101AZ 1 MFF1-81503F 1 MFF1-8A100F 1 CBS 125 1 MFFI.81911F 2 360T501AZ 1 5-35

OR ITEM NO. R142, R155 R144, R146 R152, Ri53 R162, R177 R178, R179, R184, R186 R182, R183 DESCRIPTION FLUKE STOCK NO. MFC FED SPLY CDE MFC PART NO. OR TYPE Res, fxd, comp, 3,9K ±5%,W 148064 01121 CB3925 Res, fxd, comp, 1 .3K ±5%, 234252 01121 CB1325 Res, fxd met film, 3.74K ± 1%, I/8W 272096 91637 MFF1-83741F Res, fxd, comp, lOK + 10%, IW 109389 01121 GB1031 Res, fxd, comp, 15K ±5%, 148114 01121 CBI535 Res, fxd, met film, 8.25K + 1%, 1/8W 294959 91637 MFFi-S8251F Res, fxd, met film, lOOK + 1%, 1 /8W 340166 91637 MFF1-81003F Res, fxd, comp, 5.6M ±5%, HW 358077 01121 CB5655 Res, fxd, comp, IM ±5%, 2W 268227 01121 HBlOn Res, fxd, comp, 150K ±5%, %W 182212 01121 CB1545 Res, fxd, comp, 680 ±5%,W 148007 01121 CB6815 Res, fxd, comp, 510 ±5%, IdW 218032 01121 CBSllS Res, fxd, comp, 39 ±5%, 14W 193391 01121 CE3905 Res, fxd, comp, 5 10 ±5%, 108951 01121 EB5115 Res, fxd, comp, 910 ±5%,W 203851 01121 CB9115 Res, fxd, met film 590 ±1%, 1/8W 261883 91637 MFF1-85900F Res, fxd, met film, 200K ±1%, IW 387449 91637 MFF1-2003F Res, fxd, comp, 200 +5%, IW 190603 01121 GB2015 Res, fxd, comp, 1.5K±5%,KW 266353 01121 EB1525 Res, fxd, comp, 270 ±5%,W 160804 01121 CB2715 Res, fxd, comp, 5 1 ±5%, IdW 221879 01121 CBS 105 Res, fxd, comp, 10 ±5%, idW 147868 01121 CB1035 Res, fxd, comp, 680K ±10%, IW 109694 01121 GB68il QTY QTY CDE 5-36