Microtest 7110 Operation & User’s Manual

Pay careful attention to all safety instructions below when operating or maintaining the device. Disregarding these instructions and other warnings detailed in this manual constitutes a severe violation of the design, manufacture and operating safety standards of this device. + Maintenance Instructions Operators must not remove the protective covers from the instruments. A qualified maintenance technician must perform all internal parts replacements or internal calibrations. Never replace any part while the power cord is plugged in. In special circumstances, dangerous voltages may still be present within the device after the power supply cord had been disconnected. Disconnect the power supply and take any necessary measures to discharge electricity before touching internal components to prevent injury. + Earthing the Instrument(s) Earth all instrument power sources to minimize risks of electrical shock. + Never Perform Maintenance or Internal Calibration Work Alone Never perform internal device maintenance or internal calibration work by yourself. + Never Replace Parts Yourself or Modify Device Functions or Structure Never install surrogate parts onto the machine or undertake any device modifications yourself without the express permission of Microtest, as you may increase the levels of danger associated with the device or damage the device. Please return any malfunctioning instruments to Microtest for professional repairs guaranteeing the device's continued safety. + Product Warranty Microtest provides a quality guarantee for this product for one year from the dispatch date of the product; however, warranty life may be different for special parts or different product specifications. Microtest will take responsibility for all maintenance and replacement of products found to have an actual defect during the life of the warranty (Microtest will determine the nature of the defect). Microtest guarantees that all software and hardware designated for use with

guarantee that instrument software and/or hardware will not disconnect or produce errors during operation. + Product Warranty Scope The above guarantees and warranty do not apply if a customer has failed to use the product correctly, has modified or repaired the device or replaced parts without permission from Microtest, has misused the product, or has installed or repaired the product in an environment that does not meet the specified conditions. Microtest Corporation reserves all rights. Declaration: Microtest Corporation reserves the rights to modify this manual without notification of any changes or modifications.

Section 1.1 Safety Labels ............................................................................... 5 Section 1.2 Never modify the device or perform internal calibrations yourself. ........................................................................................ 5 Section 1.3 Static Electricity ............................................................................ 5 Section 1.4 Earthing ......................................................................................... 6 Section 1.5 Power Supply ............................................................................... 6 Section 1.6 Warming-Up ................................................................................. 6 Section 1.7 Device Malfunctions .................................................................... 6 Section 1.8 After Testing ................................................................................. 6 Section 1.9 Installation and Storage .............................................................. 7 Section 1.10 Emergency Measures ................................................................. 7 Chapter 2 Foreword ................................................................................... 8 Section 2.1 Features ........................................................................................ 8 Section 2.2 Measuring Functions .................................................................. 9 Section 2.3 Function Flow-Chart .................................................................... 9 Chapter 3 Wiring ....................................................................................... 10 Section 3.1 Connecting to the Power Supply and Testing Items ............ 10 Section 3.2 F71201-Exclusive Jig Internal Measuring Wiring Schematic Diagram ................................................................... 11 Chapter 4 Operating Settings .................................................................. 12 Section 4.1 Measurement Mode .................................................................. 12 Section 4.2 Measurement range .................................................................. 13 Section 4.3 Averaging .................................................................................... 14 Section 4.4 Update Rate ............................................................................... 15 Section 4.5 Synchronization ......................................................................... 16 Section 4.6 Harmonic Operation Mode Selection ..................................... 21 Section 4.7 Start Line and Frequency Filter Function .............................. 22 Section 4.8 Set Frequency CF Value .......................................................... 24 Section 4.9 Setting 4th Display Measurement Values .............................. 25 Section 4.10 Keyboard Lock ........................................................................... 26 Section 4.11 Store/Load Panel Settings Configuration .............................. 27 Section 4.12 Set GPIB Address ..................................................................... 28 Section 4.13 Remote Control Mode .............................................................. 29 Section 4.14 Set RS232 Baud rate and Final Character............................ 30 Section 4.15 The SCALE Function ................................................................ 31 Section 4.16 Use Power Integrator ................................................................ 33

Section 4.18 Calibrate to Zero ........................................................................ 35 Section 4.19 Software Version Look-up ........................................................ 36 Section 4.20 Real time measure data storing .............................................. 37 Section 4.21 Reso Settings ............................................................................. 39 Section 4.22 Gauge Head Power Consumption Deductions ..................... 41 Chapter 5 Display Measurement Values ................................................. 42 Section 5.1 Panel Description ...................................................................... 42 Section 5.2 Measurement Items: ................................................................. 46 Section 5.3 Display A Measurement Display Area .................................... 47 Section 5.4 Display B Measurement Display Area.................................... 48 Section 5.5 Display C Measurement Display Area ................................... 49 Chapter 6 Electrical Features Specifications ......................................... 50 Chapter 7 GPIB Instruction Sets ............................................................. 64 Section 7.1 Serial Communications Specifications ................................... 64 Section 7.2 Symbols ...................................................................................... 64 Section 7.3 Commands ................................................................................. 64 Appendix…………….. ................................................................................... 85 Version…….. ................................................................................................. 85

Do not use this instrument outside and avoid humid or dusty areas. Use of this instrument in an improper setting can increase the risk of electrical shock. Carefully read all safety instructions before using the device to prevent accidents due to misuse. Section 1.1 Safety Labels The following safety labels may appear in this user manual and on the device itself. Caution: Carefully read the user manual for detailed information. Earthing Required: Check that this terminal is earthed before operating the device to prevent electrical shocks due to leakage or contact with the housing. : Improper use of the device may result in instrument or testing object malfunctions. : Improper use of the device may result in injury or death. Section 1.2 Never modify the device or perform internal calibrations yourself. Never install surrogate parts onto the machine or undertake any device modifications and internal calibrations yourself without the express permission of Microtest, as you may increase the levels of danger associated with the device or damage the device. Section 1.3 Static Electricity Keep items bearing static electricity away from the device to prevent damage.

A safe earthing terminal is located on the outer housing of the back panel of the device; check that this terminal is properly earthed to prevent contact with the housing and risk of electrical shock. Section 1.5 Power Supply You must use a power supply cable that meets local national specifications and an IEC320-compatible connector to connect the cable to the instrument. The user must check that the earth wire is properly earthed. If a fuse is included in the power supply plug it must be a 3.15A fuse compatible with relevant safety regulations. Always check before use to ensure A/C power supply and voltage values are between 100V-240V @ 50/60Hz. Section 1.6 Warming-Up The testing device can be used normally immediately after switching the power on, but will not meet accuracy specifications unless allowed to warm up for 30 minutes. Section 1.7 Device Malfunctions Return all malfunctioning instruments to the manufacturer for professional repair in order to ensure the accuracy and operational safety of the instrument. Section 1.8 After Testing Please turn the device off at the power source if it will not be used for a long period of time.

The device may be operated normally in temperatures of 18-28°C with up to 80% RH. The device may not operate in conditions exceeding these limits. The device should be stored at -20°C~70°C with up to 80% RH. In order to ensure testing accuracy and safety, avoid installing the device anywhere it would be exposed to direct sunlight, extreme heat, extreme humidity, vibration frequencies, dust, or unstable power grids. Section 1.10 Emergency Measures Switch off the power supply and disconnect the power supply cable in the event of electrical shock, test item combustion and device combustion.

Section 2.1 Features 1. 0.1% Base Accuracy, Up to 160% AC Voltage Range, Current Crest Factor (cf) Settings of 3 or 9. CF3: Up to 215% AC Current Range; CF9: Up to 645% AC Current Range; CF3: Up to 344% Power Range; CF9: Up to 1,032% Power Range. 2. With Erp Lot6 2013 Standby and off-mode power loss Standby Power Consumption Gauge. 3. Continuous Sampling design; AC 50HZ/60HZ base sampling rate of 100KSPS/120KSPS; Standby Power Consumption Gauge Precision of up to 0.001W for compatible high/low frequency electronic products. 4. Measures: AC/DC voltage current, active power (W), variance (var), apparent power (VA), power factor (PF), VI angle (DEG), voltage current crest factor (CF), voltage and current frequencies (Hz), voltage peak-to-peak (VP-P), current peak-to-peak (IP-P), total harmonic distortion (THD), harmonic voltage/current analysis at any one of 50 stages, instantaneous current and more. 5. Double CPU Design for Faster Measurements. 6. Easy-to-use Operating Panel. 7. Fast Automatic Transmission - 1 range/0.02 sec @ 50Hz. 8. Current Measuring Circuit utilizes a highly reliable vehicle relay design and features a long service life. 9. Total harmonic/single-stage distortion can be measured at up to 50 stages. 10. Can connect high-amperage current transformers to measure large currents 11. Fast and Accurate Measurements. 12. Can connect standard RS232/GPIB cables (one at a time). 13. Suitable for both large and small power measurements and can measure 0.1W standby consumption with analysis precision of 0.001W. 14. High-capacity built-in memory capable of recording 1,000 units of measurement data for long-term power analysis over time. 15. Comes with voltage meter micro-consumption adjustments.

Parameter Scope Testing Scope Vrms/Vdc 0.1V~800V Irms/Idc 0.2mA~20A W 0.01W~16KW PF 0.0000~±1.0000 Deg -180.00~+180.00 THD 0.01%~999.99% Hz 15Hz~100kHz Section 2.3 Function Flow-Chart 7120 Internal Flow Chart: 7120 Voltage channel input resistance is 1M ohm, voltage can be input directly for testing or measured with a standard attenuation sonde. Current measurement terminal uses 0.0025Ω and 0.25Ω precision shunts to directly measure currents between 0.0002A-20A, and an external CT can be used to measure larger currents. Measurement and sampling processes use independent digital signal processors and measurement results are saved in a dual-port memory before being transmitted to the LED 7-stage display panel by the CPU, integrated, and applied via the GPIB/RS-232 and ATE systems. ADC ISO ZERO phase Cross monitor MUX 2.5mΩ 250mΩ ADC ISO ZERO phase Cross monitor Dual port Memory Black Fin DSP LPC 4088 CPU GPIB RS232 KEY 7-Seg. LED I+ I- V+ V- 1MΩ ADC ISO ZERO phase Cross monitor MUX 2.5mΩ 250mΩ ADC ISO ZERO phase Cross monitor Dual port Memory Black Fin DSP LPC 4088 CPU GPIB RS232 KEY 7-Seg. LED I+ I- V+ V- 1MΩ

Section 3.1 Connecting to the Power Supply and Testing Items Match the colors on the terminals on the back panel to those of the terminals above the jigs on the F71201 Test Box to connect the wires and connect two AC power supply cables - 1 to the F71201, and one to the input port on the 7120 Power Supply. Plug appearances in different countries may make it necessary to use a converter to connect the cable to the F71201 Text Box; please select an appropriate converter for your locale.

Wiring Schematic Diagram Below is a schematic diagram of the internal wiring when using the F71201 Test Box. When the switch is set to 1 the voltage measurement point will be closer to the testing item to prevent overly low wattage measurements resulting from voltage drops across the wiring circuit under large currents. When the switch is set to 2 all power expended by the 7120 voltage input internal resistor 1M Ω is subtracted from the power rate closest to 0W; this setting is used only for measuring standby power. Determine whether to set the switch to 1 or 2 by looking at the rate of the current of the testing object. I+ I- V+ V- Fuse Fuse N L L N 2 1 SOURCE LOAD Voltage pick up point I+ I- V+ V- Fuse Fuse N L L N 2 1 SOURCE LOAD Voltage pick up point Caution: Double check that the voltage and wiring at the current input terminals are correct before connecting to mains power to prevent power overload.

Section 4.1 Measurement Mode Keys: Steps: Press Description: Indicator Voltage Current RMS Measured true rms value Measured true rms value V-MEAN Rectified mean value calibrated to the rms value Measured true rms value DC Measured DC value obtained by averaging input signal Measured DC value obtained by averaging input signal Harmonic Measured harmonic distortion Measured harmonic distortion

Keys: Steps: Set Voltage range 1. VOLTAGE 2. ↑↓ Select 10V/30V/100V/300V/600V/AUTO 3. ENTER/HOLD to complete voltage range selection. Set Current Range 4. CURRENT 2. ↑↓ Select 0.01A/0.03A/0.1A/0.3A/1A/3A/10A/20A/AUTO then press 3. ENTER/HOLD to complete current range selection. Description: The AUTO RANGE LED on the panel will light up when voltage or current range are set to AUTO. Press the voltage or current key to show which automatically selected voltage or current range is currently being used by the device on the C Display. 1. 2. 3. 4.

Keys: Steps: 1.SETUP↑↓AVG2.ENTER/HOLD3.↑↓ON/OFF/FACT 2.ENTER/HOLD 3.↑↓LIN8/16/32/64/EP8/EP16/EP3/EP64  2.ENTER/HOLD Description: An exponential average (EP8~EP64) is calculated using the following formula: D = Dn-1 + (Mn – Dn-1)/K Where Dn: the value at the nth display; Dn-1: the exponentially averaged value at the n-1th display; Mn: the measurement value at the nth display; K: attenuation constant A moving average is calculated using the following formula: D = (D m-1)+(D m-2)…(D m-64)/m Where Dm-(1~64): the moving averaged value at the m-(1~64)th display; m = 8, when setting LIN8 m = 16, when setting LIN16 m = 32, when setting LIN32 m = 64, when setting LIN64 m: sample number 1. 2. 3.

Keys: Steps: 1. SETUP 2. ↑↓URATE  3. ENTER/HOLD  2.↑↓ 0.1/0.25/0.5/1/2/5 3.ENTER/HOLD Description: The update rate defines measurement update intervals: the longer the period set, the greater the number of sampling cycles, and the more stable the readings. Each testing item will have its own loading characteristics - slow down the update rate if the readings show great variation in order to obtain more stable readings. Sampling cycles for each URATE can be found below. In Harmonics mode, the update rate can be between .025S~5S. AC 0.1s 0.25s 0.5s 1s 2s 5s 50Hz Mains Power 5 10 25 50 100 250 60Hz Mains Power 6 12 30 60 120 300

Keys: Steps: 1. SETUP 2.↓↑ Select SYNC  3. Press ENTER/HOLD and use ↓↑ to select V/A/AUTO/OFF  3. ENTER/HOLD Description: A: First use the current (with a frequency jitter of under 2%) as a synchronization source, then the voltage. If both are unstable, take a fixed sample at 200KSPS. V: First use the voltage (with a frequency jitter of under 2%) as a synchronization source, then the current. If both are unstable, take a fixed sample at 200KSPS. Auto: Automatically determine whether to use the voltage or the current as the synchronization source (voltage >1V / Current (only use if reading >3% of ranges). Automatic Synchronization Source Rules: Synchronize using voltage only when voltage is stable. Synchronize using current only when current is stable. Select the lower-frequency option if both current and voltage meet minimum signal conditions with a jitter of less than 2%. Use a fixed 200KSPS sample if neither the current nor voltage meets the required conditions. The current automatic synchronization locked source will be display beneath the Sync menu as V-Auto (voltage), A-Auto (current) or d-Auto (default fixed sample). Only RMS/MEAN/DC are supported in Auto mode; in Harmonic mode please set a stable and lower-frequency signal source as the base frequency. 1. 2. 3.

V-Sync V-Auto Current > 3% of range && Voltage Frequency Jitter < 2% A-Sync A-Auto OFF: The Sync OFF option is only for capturing high-frequency surge currents. The 7120 takes fixed ~200KSPS samples and uses different update rates to calculate the samples. Reading stability has been reaching once the input signals match the frequencies given in the following table at the completion of the sampling cycle (pale blue cells); although the pink cell values also indicate a stable reading frequency, they are only given for reference purposes as their sampling cycle is just over half a cycle. Update Rate (Seconds) Freq. 0.1 0.25 0.5 1 2 5 10 15 1.5 3.75 7.5 15 30 75 150 16 1.6 4 8 16 32 80 160 17 1.7 4.25 8.5 17 34 85 170 18 1.8 4.5 9 18 36 90 180 19 1.9 4.75 9.5 19 38 95 190 20 2 5 10 20 40 100 200 21 2.1 5.25 10.5 21 42 105 210 22 2.2 5.5 11 22 44 110 220 23 2.3 5.75 11.5 23 46 115 230 24 2.4 6 12 24 48 120 240 25 2.5 6.25 12.5 25 50 125 250 26 2.6 6.5 13 26 52 130 260 27 2.7 6.75 13.5 27 54 135 270 28 2.8 7 14 28 56 140 280 29 2.9 7.25 14.5 29 58 145 290 30 3 7.5 15 30 60 150 300 31 3.1 7.75 15.5 31 62 155 310 32 3.2 8 16 32 64 160 320

The 7120 can be operated in both ordinary power mode and as an independent ammeter, an ampere-hour meter or an independent voltmeter. The following table gives synchronization source settings for common input signals with a description of the synchronization rules of the 7120 in order to help the user select the most appropriate synchronization source to obtain a stable and accurate voltage/current/watt reading.

Voltage Current Sync-V Priority Order (V-A-d) Sync-A Priority Order (A-V-d) Sync-Auto (Voltage over 1V, Current over Gear 3%) Sync - OFF The below are actual operating mechanisms for internal synchronization sources. Ο(Stable) Χ(No Freq or Unstable) V V V-Auto d(default) No synchronization source, use fixed sampling rate Ο(Stable) Ο(Stable) V A Prioritize those with long periodic signals and jitter <2%. Χ(Unstable) Ο(Stable) A A A-Auto Χ(Unstable) Χ(No Freq or Unstable) d(default) d(default) d-Auto Harmonic Power Meter Mode Voltage Current Sync-V Selected Only V Sync-V Selected Only V Sync-Auto (Voltage over 1V, Current over Gear 3%) Sync - OFF The below are actual operating mechanisms for internal synchronization sources. Ο(Stable) Χ(No Freq or Unstable) V No Measurement V-Auto Setting does not exist Ο(Stable) Ο(Stable) V A Prioritize those with long periodic signals and jitter <2%. Χ(Unstable) Ο(Stable) No Measurement A A-Auto Χ(Unstable) Χ(No Freq or Unstable) No Measurement No Measurement No Measurement

Voltage Current Sync-V Priority Order (V-A-d) Sync-A Priority Order (A-V-d) Sync-Auto (Current over Gear 3%) Sync - OFF The below are actual operating mechanisms for internal synchronization sources. Χ(Idle Contact) Χ(No Freq or Unstable) d(default) d(default) d-Auto d(default) No synchronization source, use fixed sampling rate Χ(Idle Contact) Ο(Stable) A A Jitter must be less than 2% for A-Auto RMS / DC / MEAN Voltmeter Mode Voltage Current Sync-V Priority Order (V-A-d) Sync-A Priority Order (A-V-d) Sync-Auto (Voltage over 1V) Sync - OFF The below are actual operating mechanisms for internal synchronization sources. Ο(Stable) Χ(Idle Contact) V V Jitter must be less than 2% for A-Auto d(default) No synchronization source, use fixed sampling rate Χ(Unstable) Χ(Idle Contact) d(default) d(default) d-Auto

Keys: Steps: 1. Press SETUP 2. Use ↑↓ to select THD and press ENTER/HOLD then use ↑↓ to select IEC or CSA Description: Below are the differences between IEC and CSA Total Harmonic Distortion Ratio Definitions. The 7120 supports calculations using both. 1. 2. 3.

Keys: Steps: Line Filter Start/Stop: Press SETUP and use ↑↓ to select L.FILTER, press ENTER/HOLD, select ON/OFF and press ENTER/HOLD Frequency Filter Start/Stop: Press SETUP and use ↑↓ to select F.FILTER, press ENTER/HOLD, select ON/OFF and press ENTER/HOLD Line Filter Description: Interference from background noise over 500Hz can be picked up easily and may affect low-frequency signal measuring precision when measuring small voltages (<0.1V) or small currents (1mA). Turn this function on to eliminate noise over 500Hz and increase precision. Use of this function is not recommended if the current frequency of the testing item is over 66Hz. The line filter coefficients for the 7120 were designed to eliminate high-frequency signals and allow the power meter to focus on measuring low-frequency continuous signals. The maximum input frequency allowed by the line filter is 16KHz.

specifications of 500Hz - 3dB shown on the Bode Plot below. Line Filter Applications: This function has two primary applications: To filter and eliminate environmental noise when measuring low-frequency small currents e.g. when measuring A/C 60Hz 100μA, without the line filter the readings obtained are 0.000102A and 0.0001005A (nearly 100μA) with the line filter. This function can be used to measure extremely small static low-frequency power consumption in electrical products. This function will affect the V/A/W readings for items with greater power consumption and a frequency loading of over 66Hz, so please remember to switch it off. To filter and eliminate harmonics of over 500Hzwhen conducting harmonics analysis. It can only be used when analyzing harmonics under 500Hz (50Hz mains power in 10 stages); please remember to switch off the line filter function when analyzing harmonics over 500Hz. Frequency Filter Description: When the signal to be measured has a base frequency of 50Hz/60Hz and a high-frequency component, turn the F-Filter on to filter out signals over 500Hz and only show those lower than 500Hz. This function only filters some frequencies and has no affected whatsoever on voltage/current/wattage. The frequency filter must be switched off when the base frequency is greater than 490Hz to avoid affecting the bandwidth of the volt frequency counter and current frequency counter, making it impossible to measure the actual volt and current frequencies.

Keys: Steps: Press SETUP and use ↑↓ to select CF then press ENTER/HOLD. Select 3/9 and press ENTER/HOLD to switch between current CF3 / CF9 Description: Maximum CF3 crest current/RMS current ratio setting is 330%; set crest current/RMS current maximum ratio to 990% to eliminate time and precision spent switching small range when testing electrical items with high current crest factors to maintain the integrity of the current measurement. When settings range for CF3 current 0.3A (inc. 0.3A) or CF9 0.1A (inc. 0.1A) the current measurement uses a 0.25 ohm shunt. The hardware will force an automatic gear switch when the current exceeds 1.3A (AC) or 1.8A (DC) to protect the internal shunt from combustion, and when the device is switched off the internal default is to use the 0.0025 ohm circuit to protect the 0.25 ohm from accidental exertion and burn-out from large currents. CF Definitions: Crest current / RMS gear values all based of sine waves.

Keys: Steps: Press SETUP and use ↑↓ to select DISPL, press ENTER/HOLD and select ON/OFF/SET. In SET press ENTER/HOLD and use ↑↓ to select Fun2, then press ENTER/HOLD and use ↑↓ to select display values to alternate. In SET press ENTER/HOLD and use ↑↓ to select intvl, then press ENTER/HOLD and use ↑↓ to select from settings 1~30 for switching display interval time. Description: This function allows the first display to alternately display two measurement values. FUNC2: Select the second measurement value to display. In RMS mode select either V, A, W, VA, VAR, Vcf, Acf or PF. In HARM mode select either Order, V, A, W, or PF. INTAL: Set the interval between the alternating displays - can choose between 1-30 seconds.

Keys: Steps: Set Keyboard Lock Press KEY LOCK to immediately lock the keyboard. Unlock Keyboard Press KEY LOCK again to immediately unlock the keyboard. Description: Locking the keyboard prevents all other keys from working, preventing erroneous setting adjustments. If a locked key is pressed Display A will flash a Lock message.

Keys: Steps: Store and Delete Press SYSTEM and use ↑↓ to select Store, then press ENTER/HOLD and use ← → to switch between the six storage slots, and then press ENTER/HOLD to save. The C Display will indicate a full slot with the letter F, press ↓ to delete the stored memory. The C display will show - to indicate an empty slot. Load Settings Press SYSTEM and use ↑↓ to select Recall, the use ← → to switch between the six storage slots. Press ENTER/HOLD to immediately read the panel settings. Description: There are six storage slots to save panel settings. Current device settings can be saved. Used slots are indicated with an F on the display, and empty slots are indicated with a single line. Factory default settings leave all six slots empty. STORE / RECALL: To save or load the current settings use the ← → to select a slot. FUNC A, B, and C will display the content of the currently selected file; press the down button to delete the file and the ENTER button to save the current settings in the slot/load the settings from the slot.

Keys: Steps: Press SYSTEM and use ↑↓ to select GPIB, then press ENTER/HOLD and use ↑↓ to toggle between GPIB Address 1~30, then press ENTER /HOLD to finish. Description: This function sets the GPIB address within a range of 1-30.

Keys: Steps: Setting a correct GPIB address or RS232 Baud rate will result in the Remote light being lit when a PC is successfully connected. Exit Remote Control Mode Press KEYLOCK to immediately exit remote control mode. Description: Users cannot use keys to control the device when the 7120 is being controlled remotely. Remote Control mode must be exited in order to manually control the device. The device will automatically enter this mode upon receipt of remote control commands.

Keys: Steps: Set Baud rate Press SYSTEM and use ↑↓ to select RE-232, then press ENTER/HOLD and use ↑↓ to select b.rate. Press ENTER/HOLD and use ↑↓ to toggle between 9600 / 19200 / 38400 / 57600 /115200, then press ENTER/HOLD to complete 7120 Baud rate settings. Press SYSTEM and use ↑↓ to select RE-232, then press ENTER/HOLD and use ↑↓ to select EoL 2. Press ENTER/HOLD and use ↑↓ to select Final Character CR(0xd) or LF(0xa). Description: When connecting to a PC using RS232 ensure that Baud rate settings are correct and set data 8-bit to have a starting bit and a final character with LF as the final character.

Keys: Steps: Set Scale Amplification Parameters Press SETUP and ↑↓ select SCALE, press ENTER/HOLD and toggle to Data, then press ENTER/HOLD to enter Amplification Settings. A Display shows P 1.000, use ←→ to select the digits and use ↑↓ to adjust the value by decimals. Press ENTER/HOLD once set to enter C Settings. B Display shows C 1.000; follow instructions for A Display then press ENTER/HOLD once set to enter P Settings. C Display shows F 1.000; follow instructions for B Display. Set SCALE ON / OFF Press SETUP and ↑↓ select SCALE, press ENTER/HOLD and toggle ON/OFF, then press ENTER/HOLD to finish settings. Description: This function is used with external potential transformers (P.T.), current transformers (C.T.) or shunts to convert numerical amplifications of measured voltage, current, power and other data. When this function is turned on all measured values will be amplified by the set amount and directly displayed on the screen. Caution: When using P.T.s, C.T.s or shunts make sure that inputs into the 7120 voltage and current ports are within electrical specifications.

Current (A) C (set scale value)* A Active Power (W) F (set scale value)* P * C * W Variance (var) F * P * C * var Apparent Power (VA) F * P * C * VA

Keys: Steps: Press START to starting Integrator operation and use FUNCTION C to switch The display C to show W-H± or A-H± Reading. Description: This function is to calculate accumulated power use. Power and current consumption will begin to be counted until the user presses the STOP button. Counting time is set in 00.00.00 (HH.MM.SS). Pressing the Start Accumulating Power button when time parameters are greater than zero will turn this time into a countdown timer and settings will return to their original parameters once the countdown reaches zero. Pressing the Start Accumulating Power button when time parameters are zero will cause these parameters to count the length of accumulated time.

Keys: Steps: Press SYSTEM and use ↑↓ select ACLINE press ENTER to select 50Hz / 60 Hz press ENTER to complete setting. Description: This function can measure average values for AC power supply cycles in different regions (DC mode), increasing measurement value stability. Select between 50Hz and 60Hz; best results are obtained when the appropriate frequency is selected for your current power supply frequency.

Keys: Steps: Press SYSTEM and use ↑↓ to select ZERO, then press ENTER/HOLD and use ↑↓ to select ON. Press ENTER/HOLD to start calibration to Zero. Description: Zero calibration is carried out in the factory to ensure the precision of the device. Devices are calibrated in the factory at 23°C ±1°C and RH 50%±10%. Users are advised to recalibrate the device to zero if the environment of use exceeds the factory environment by ±5°C in the interest of obtaining best results. Before using this function, warm the machine up for 30 minutes and set voltage and current to Auto range. Remove all connections from the front and back panels and short terminals V+ and V- on the back panel before using this function. The device will automatically carry out a zero calibration once the command has been executed and the calibration will take approximately 10 seconds, after which the device will re-enter measurement mode.

Keys: Steps: Press SYSTEM and use ↑↓ to select VER and check the Firmware version and date. Description: The Version screen displays the current version and date of the internal device program.

Keys: Steps: Save: Open the SYSTEM menu and use ↑↓ to select MEMORY, then press RECORD and use ↑↓ to toggle to ON and begin data recording Time Interval Settings (controls both play and recording intervals): Open the SYSTEM menu and use ↑↓ to select MEMORY, then press RECORD and use ↑↓ to toggle to Intval. Press ENTER/HOLD and use ←→ to adjust the hours/minutes/seconds using the up/down arrows. Once the desired time has been set, press ENTER/HOLD to save your changes. If this time is set to 00:00:00 play and recording intervals will by synchronized to the Update rate. Description: The 7120 Buind-in 1,000 space of flash memory for storing measurement data. Each unit of data records the AC/DC voltage, AC/DC current, voltage frequency, current frequency, power, voltage plus/minus peak values, current plus/minus peak values, voltage peak-to-peak, current peak-to-peak, power factor, voltage/current phase angle, voltage CF, current CF, apparent power, weakness, and total voltage harmonic distortion at the time of recording, and in harmonics mode also records 50 stages of voltage/current/wattage capacity and their distortion ratios. This function is used in long-term power analyses. Range and detailed settings are recorded together with the recorded data and displayed together

light will flash during playback. The UPDATE light will stop flashing when playback concludes.

Keys: Steps: Press SYSTEM and use ↑↓ to select RESO, then press ENTER/HOLD and use ↑↓ to select HI/LO Description: This function can be used to switch between value decimals on the LED display. Detailed voltage and current display rules are outlined in the following two tables. Current gear display rules for when RESO = LO, are given in the below table; add one decimal place when RESO = HI. CF3 CF9 A Unit A Unit 10mA 0.20-21.50 mA 2 decimal places 0.60-64.50 mA 2 decimal places 30mA 0.60-64.50 mA 2 decimal places 2.0-215.0 mA 1 decimal place 100mA 2.0-215.0 mA 1 decimal place 6.0-645.0 mA 1 decimal place 300mA 6.0-645.0 mA 1 decimal place 0.060-2.150 A 3 decimal places 1A 0.020-2.150 A 3 decimal places 0.060-6.450 A 3 decimal places 3A 0.060-6.450 A 3 decimal places 0.20-20.00 A 2 decimal places 10A 0.20-20.00 A 2 decimal places 0.40-20.00 A 2 decimal places 20A 0.40-20.00 A 2 decimal places 0.40-20.00 A 2 decimal places

add one decimal place when RESO = HI. V Unit 10V 0.10-16.00 V 2 decimal places 30V 0.30-48.00 V 2 decimal places 100V 1.0-160.0 V 1 decimal place 300V 3.0-480.0 V 1 decimal place 600V 6.0-800.0 V 1 decimal place CF3 Wattage gear display rules for when RESO = LO, are given in the below table; add one decimal place when RESO = HI. CF3 10V 30V 100V 300V 600V 10mA 000.0mW 0.000W 0.000W 00.00W 00.00W 30mA 0.000W 0.000W 00.00W 00.00W 00.00W 100mA 0.000W 00.00W 00.00W 000.0W 000.0W 300mA 00.00W 00.00W 000.0W 000.0W 000.0W 1A 00.00W 000.0W 000.0W 0.000KW 0.000KW 3A 000.0W 000.0W 0.000KW 0.000KW 0.000KW 10A 000.0W 0.000KW 0.000KW 0.00KW 00.00KW 20A 000.0W 0.000KW 0.000KW 0.00KW 00.00KW CF9 Wattage gear display rules for when RESO = LO, are given in the below table; add one decimal place when RESO = HI. CF9 10V 30V 100V 300V 600V 10mA 0.000W 0.000W 00.00W 00.00W 00.00W 30mA 0.000W 00.00W 00.00W 000.0W 000.0W 100mA 00.00W 00.00W 000.0W 000.0W 000.0W 300mA 00.00W 000.0W 000.0W 0.000KW 0.000KW 1A 000.0W 000.0W 0.000KW 0.000KW 0.000KW 3A 000.0W 0.000KW 0.000KW 00.00KW 00.00KW 10A 000.0W 0.000KW 0.000KW 00.00KW 00.00KW 20A 000.0W 0.000KW 0.000KW 00.00KW 00.00KW

Deductions Keys: Steps: In SYSTEM use ↑↓ to select M_CMP and then select ON or OFF Description: This function deducts internal micro-consumption from the voltmeter. E.G. 220V AC 60Hz with a F71201 Test Box using voltage set to I will measure a wattage of 0.048W (gauge head consumption). With MCP ON a deduction of VRMS2 / 1M will be made for the voltmeter internal resister and the panel reading will show a consumption of almost 0W. When connected to an external Calibrator this function set M_CMP to OFF, as the voltage and current of the calibrator are independent. This function should also be off if the voltmeter is bridged in before the ammeter. 快速接頭量測接線 V Source I+ I- 負載 1MΩ V+ V- Breaker 快速接頭量測接線 V Source I+ I- 負載 1MΩ V+ V- V+ V- Breaker 1MΩ V Source I+ 獨力電壓錶接線 V+ V- A Source I- 獨力電流錶接線 1MΩ V Source I+ 獨力電壓錶接線 V+ V- V+ V- A Source I- 獨力電流錶接線 Fast Connection Measuring Wiring Independent Voltmeter Wiring Independent Ammeter Wiring Load

Values Section 5.1 Panel Description Indicator LEDs are used in the panel description to indicate the current settings and measurement functions - e.g. Rms indicates that the device is currently set to measure RMS. [1] Status Lights: 1. UPATE: indicates sampling (flash speed is the update rate). 2. RMS: Measure AC mode. 3. VOLT MEAN: Measure average voltage mode. 4. MAX HOLD: Maintain maximum value function. 5. HARMONICS: Measure harmonics mode. 6. V AUTO RANGE: Voltage range are automatically set. 7. A AUTO RANGE: Current range are automatically set. 8. REMOTE: Remote control mode 9. KEY LOCK: keyboard is locked. 10. INTEG: Power Accumulation Mode. 11. AVG: Set average value function activated. 12. MEMORY: Data recording/playback indicator light (flashes with UPDATE light when saving). 13. L-FILTER: Line filter function activated. 14. F-FILTER: Frequency filter function activated. 15. HOLD: Panel data update temporarily on hold.

[3]. DISPLAY_A Measurement Value Display Area. [4]. DISPLAY_A Measurement Item Display Area. V: Displays voltage. A: Displays amperage. W: Displays wattage. VA: Displays Apparent Power. var: Displays Variance. ET: Displays accumulated time. V_CF: Displays voltage waveform factor. A_CF: Displays current waveform factor. PF: Displays power factor. [5]. DISPLAY_B Measurement Value Display Area. [6]. DISPLAY_B Measurement Item Display Area. V: Displays voltage. A: Displays amperage. W: Displays wattage. V_%: Displays voltage harmonic distortion (7-segment display t = 50 stage total harmonic distortion). A_%: Displays current harmonic distortion (7- segment display t = 50 stage total harmonic distortion). W_%: Displays Power/Harmonic Distortion Deg: Displays phase angle. V-Deg In Harmonics mode, displays 1-50 stages of voltage phase angles V-Deg Definition: First stage is phase difference between voltage and current, stages 2-50 are phase difference between stage one voltage and stage 2-50 voltage.

Definition: First stage is phase difference between voltage and current, stages 2-50 are phase difference between stage one current and stage 2-50 current. V_PK+: Displays voltage positive peak. A_PK+: Displays current positive peak. V_PK-: Displays voltage negative peak. A_PK-: Displays current negative peak. V_PP: Displays voltage peak-to-peak. A_PP: Displays current peak-to-peak. [7]. DISPLAY_C Measurement Value Display Area. [8]. DISPLAY_C Measurement Item Display Area. V: Displays voltage. A: Displays amperage. W: Displays wattage. VA: Displays Apparent Power. var: Displays Variance. PF: Displays power factor. V_Hz: Displays voltage frequency. A_H: Displays ampere/hour. W_H: Displays wattage/hour. VA_H: Displays Apparent Power/hour. var_H: Displays variance/hour. Vpk: Displays peak voltage. Display light V lights up, a P is shown at the left-most side of the display area. Apk: Displays current voltage. Display light A lights up, a P is shown at the left-most side of the display area. [9]. Window Display Item Settings Key: FuncA: Set DISPLAY_A display items. FuncB: Set DISPLAY_B display items. FuncC: Set DISPLAY_C display items.

[11]. Gear settings shortcut key. [12]. Calibrate keys. [13]. Measurement mode selection key. [14]. System function settings key. [15]. Gear, average value, update rate settings key. [16]. Accumulated settings key: Start/Stop: Start or stop accumulation. Reset: Press this button to clear all accumulated values (AH, WH, VAH, varH). [17]. Unlock keyboard/remote control mode settings key. [18]. MAX.HOLD mode shortcut key: Turn on this mode to only retain maximum values, press again to return to normal measuring mode. [19]. Input/Hold Key: During settings mode this key is an input key; in measurement mode, this key retains data and pressing this key will hold all currently measured data and prevent updates from occurring. The window display settings key can also be pressed to switch between item values to display. [20]. Device power supply socket. [21]. Testing item object input.

[23]. RS-232 interface socket. Section 5.2 Measurement Items: V: Displays voltage. A: Displays amperage. W: Displays wattage. VA: Displays Apparent Power. var: Displays Variance (inactive power). TIME: Displays accumulated time. Pk+: Displays positive peak. Pk-: Displays negative peak. PP: Displays peak-to-peak. CF: Displays waveform factor. PF: Displays power factor. Hz: A-HZ and VHZ display function. Deg: Displays phase angle. h: Displays power/hour. %: Displays total harmonic distortion (THD). Vpk: Displays peak voltage. Apk: Displays current voltage.

Keys and Display Lights: Description: 1. In Rms and Volt Mean modes press FunctionA key - the toggle order of functions in Window A is below. V  A  W  VA  var  TIME  V_CF  A_CF  PF  V (Default) 2. In Harmonic mode press FunctionA key - the toggle order of functions in Window A is below. V  A  W  or. Number (Default) 3. m & k are unit scientific notation lights; m = 10-3 and k = 10+3.

Keys and Display Lights: Description: 1. In Rms, Volt Mean and DC modes press FunctionB key - the toggle order of functions in Window B is below. A  W  Deg  V_Pk+  A_Pk-  V_Pk+  A_Pk- V_PP A_PP  V  A(Default) 2. In Harmonic mode press FunctionB key - the toggle order of functions in Window B is below. V-t (default)%  A-t%  W%  V-deg  A-deg  V A W  V-t (default)%, t = total mode, in this mode pressing the left and right keys allows you to toggle between total mode (t) and single-stage mode. 3. m & k are unit scientific notation lights; m = 10-3 and k = 10+3.

Keys and Display Lights: Description: 1. In Rms, Volt Mean and DC modes press FuncC key - the toggle order of functions in Window C is below. W  VA  var  PF  Hz  A_H  W_H  VA_H  var_H VpkApk V A W (Default) 2. In Harmonic mode press FuncC key - the toggle order of functions in Window C is below. VHz  AHz V  A  W VHz (Default) 3. m & k are unit scientific notation lights; m = 10 -3 and k = 10 +3. Note: Vpk: Displays peak voltage. Display light V lights up, a P is shown at the left-most side of the display area. Apk: Displays peak voltage. Display light A lights up, a P is shown at the left-most side of the display area.

Specifications Basic measurement mode specifications Measurement Foundation Obtain a stable base frequency (less than 1% variation) from voltage or current (non-variable) and begin taking measurements. Frequency Range 15HZ ~ 100KHz Data Length dual 4096x16 RAM for voltage & current ADC Data Format 16 bits Sampling Rate Max 200KSPS/Basic 100KSPS/120KSPS (50Hz/60Hz) Operation Precision IEEE-754 32bits Frequency Filter 500HZ cut off, 25MHZ digital chip filter Line Filter 500Hz -3db, Butterworth digital filter Filter Sampling Method Voltage/Current 25MHZ base frequency digital dynamic counter chip Phase Leader Detection Based off the current, analog/digital mixed sensing (margin of error within 5 degrees) Zero Level Specifications (CF3) Voltage Current AC(Noise) DC(Offset) AC(Noise) DC(Offset) 10V <0.045V ±0.01V 0.01A <0.00005A ±0.00003A 30V <0.045V ±0.03V 0.03A <0.00007 ±0.00003A 100V <0.1V ±0.1V 0.1A <0.0002A ±0.00004A 300V <0.3V ±0.3V 0.3A <0.0002A ±0.0003A 600V <0.6V ±0.6V 1A <0.008A ±0.003A 3A <0.008A ±0.005A 10A <0.02A ±0.01A 20A <0.02A ±0.02A Accessory Specification Conditions: a. Environmental temperature variance 30 minutes after switching the device on is within 5 degrees of 23°C. b. Voltage offset to short circuit V+ V- with a 5cm short wire. c. Current offset obtained with I+ I- idle contact. d. AC Voltage/AC Current obtained with L-Filter on.

Voltage (Red) Voltage (Black) Current (Red) Current (Black) Case – Earthed Voltage (Red) --- 800V RMS 600V RMS 600V RMS 600V RMS Voltage (Black) 800V RMS --- 600V RMS 600V RMS 600V RMS Current (Red) 600V RMS 600V RMS --- 600V RMS Current (Black) 600V RMS 600V RMS --- 600V RMS Case - Earthed 600V RMS 600V RMS 600V RMS 600V RMS ---

 Electrical Item Specifications Scope of Warranty Temperature Within Scope: 23±5°C  Humidity: 30 to 75%RH.  Power Factor: 1  Input signal: sine wave  With scaling off  Only use indoors after a 30 minute warm-up  New devices un-package must be zero calibration before initial use.  Calibration with a Fluke 5522A guarantees precision for 6 months. Voltage (V) Ranges (Auto or Manual) (5 ranges) 10V, 30V, 100V, 300V, 600V Operating Principle True RMS or mean value rectification Frequency Range DC and 15Hz to 100KHz AC Accuracy (23°C±5°C Environmental) 15 Hz≦f<45 Hz ±(0.1% of reading + 0.4% of range) 45 Hz≦f≦66 Hz ±(0.1% of reading + 0.1 % of range) 66 Hz

Manual) (8 ranges) 0.01A, 0.03A, 0.1A, 0.3A, 1A, 3A, 10A, 20A Operating Principle True RMS or mean value rectification Frequency Range DC and 15Hz to 100KHz AC Accuracy (23°C±5°C Environmental) 15 Hz≦f<45 Hz ±(0.1% of reading + 0.4% of range) 45 Hz≦f≦66 Hz ±(0.1% of reading + 0.1 % of range) 66 Hz

Max Power (W) value determined by max voltage gear. AC Accuracy 15 Hz≦f<45 Hz ±(0.3% of reading + 0.2% of range) 45 Hz≦f≦66 Hz ±(0.1% of reading + 0.1 % of range) 66 Hzf or f >66 Hz. Add ±{(3.5 + 0.5 × f)% of VA} for up to 100 kHz as reference data. The unit for frequency f is kHz. When Power Factor 0 < PF ≦ Margin of Error Range. When 066 Hz. Add ± power reading *{ tan θ* (0.5×f+0.2) }% Margin of Error within 12 Months: Add ±(0.5% of reading)

Max Power (W) value determined by max voltage gear. Voltage Gear Current Gear CF3 Range CF9 Range Resolution 10V 0.01~20A 0W~200W 0W~200W 0.001W 30V 0.01~20A 0W~600W 0W~600W 0.001W 100V 0.01~20A 0W~2000W 0W~2000W 0.001W/1W(K) 300V 0.01~20A 0W~6000W 0W~6000W 0.001W/1W(K) 600V 0.01~20A 0W~12KW 0W~12KW 0.01W/1W(K) Power range with CF 3 setting Voltage Range 0.01A 0.03A 0.1A 0.3A 1A 3A 10A 20A 10V 0.1W 0.3W 1W 3W 10W 30W 100W 200W 30V 0.3W 0.9W 3W 9W 30W 90W 300W 600W 100V 1W 3W 10W 30W 100W 300W 1KW 2KW 300V 3W 9W 30W 90W 300W 900W 3KW 6KW 600V 6W 18W 60W 180W 600W 1.8KW 6KW 12KW Power range with CF 9 setting Voltage Range 0.01A 0.03A 0.1A 0.3A 1A 3A 10A 20A 10V 0.3W 1W 3W 10W 30W 100W 200W 200W 30V 0.9W 3W 9W 30W 90W 300W 600W 600W 100V 3W 10W 30W 100W 300W 1KW 2KW 2KW 300V 9W 30W 90W 300W 900W 3KW 6KW 6KW 600V 18W 60W 180W 600W 1.8KW 6KW 12KW 12KW

Frequency Range, Fundamental (Automatic Tuned) 40Hz ~ 440Hz Measuring Input Voltage or Current Frequency (Hz) Operating Principle Digital frequency detector Accuracy (23°C±5°C Environmental) ±0.5% reading Measuring Input Voltage or Current Peak Voltage (Vpkp, Vpkn, Vpp) Ranges (Auto or Manual) (5 Range) 10V(16V), 30V(48V), 100V(160V), 300V(480V), 600V(800V) Frequency Range 15Hz to 100kHz Accuracy (23°C±5°C Environmental) ±3% reading ±3% range ±(0.01*F kHz)% Peak Current(Ipkp, Ipkn, Ipp) Ranges (Auto or Manual) (8 Range) 0.01A(0.0215), 0.03A(0.0645), 0.1A(0.215), 0.3A(0.645), 1A(2.15A), 3A(6.45A), 10A(21.5A), 20A(50A peak) Frequency Range 15Hz to 100kHz Accuracy (23°C±5°C Environmental) ±3% reading ±3% range ±(0.2*F kHz)% Crest Factor (CF) Computation Peak/RMS Current input CF3(1~3.0) / CF 9.0(1~9) Voltage Input CF 2.2 (1~2.2) Inrush Current Ranges (Manual) (8 Range) 60mApk to 66 Apk (20A) Accuracy (23°C±5°C Environmental) ±5% of selected range

Ranges 0.0000 to ±1.0000 Computation W / ( VA) Accuracy (23°C±5°C Environmental) Phase Angle (DEG) Ranges 0.00 to ±180.00 Computation DEG = ACOS(PF) with lead/lag detection. Apparent Power (VA) Ranges V A Range Computation VrmsΧArms Accuracy (23°C±5°C Environmental) When power factor (PF) = 0(VA: apparent power) • Add ±0.2% of VA for 45 Hz

Update Time (sec) Frequency Range 0.1 25HZ ~ 100KHZ 0.25 10HZ ~ 100KHZ 0.5 5HZ ~ 100KHZ 1 2.5HZ ~ 100KHZ 2 1.5HZ ~ 100KHZ 5 0.5HZ ~ 100KHZ Description: Measuring range is 15Hz-100KH (update time set to 0.25s); at 0.1 seconds, precision of any values measured below the measuring range cannot be guaranteed.

MIN MAX MIN CF3 / 9 MAX CF3 / 9 10V 1% 210% 0.01A 2% / 6% 260% / 780% 30V 1% 210% 0.03A 2% / 6% 260% / 780% 100V 1% 210% 0.1A 2% / 6% 260% / 780% 300V 1% 210% 0.3A 2% / 6% 260% / 780% 600V 1% 133% 1A 2% / 6% 260% / 780% 3A 2% / 6% 260% / 666% 10A 2% / 6% 200% 20A 2% / 6% 100% Accessory Specification Conditions: AC Gear Measurement Specifications MIN MAX MIN CF3 / 9 MAX CF3 / 9 10V 1% 160% 0.01A 2% / 6% 215% / 645% 30V 1% 160% 0.03A 2% / 6% 215% / 645% 100V 1% 160% 0.1A 2% / 6% 215% / 645% 300V 1% 160% 0.3A 2% / 6% 215% / 645% 600V 1% 130% 1A 2% / 6% 215% / 645% 3A 2% / 6% 215% / 645% 10A 2% / 6% 200% 20A 2% / 6% 100% Accessory Specification Conditions: a. The above AC Current Measurement Verifications used a Fluke 5522A calibrator. Once current output reached 70% of the equipment 2.99999A gear power rating maximum current a low-frequency adjuster LCOMP function was used to adjust output to contain some high-frequency noise. b. All AC voltage range and current range were tested and verified with standard SIN waves.

Analysis Foundation Obtain a stable base frequency (less than 1% variation) from voltage or current (non-variable) and begin analysis. Frequency Range 45Hz ~ 440Hz FFT Data Length 1024 FFT Data Format 32 bits Measurement Items: 1-50 Total Harmonics Distortion, 1-50 Stage Voltage/Current V[n], A[n], 1-50 Stage Voltage/Current Distortion Ratio V[n%], A[n%] 1-50 Stage Wattage W[n] 1-50 Wattage Distortion Ratio W[n%] 1-50 Stage Voltage and Current Angle DEG[n] Vrms, Irms, Watt, PF Window function Rectangular Sampling Specifications and Analysis Stages Base Frequency Sample rate FFT Data Base Frequency Intervals MAX. Order 45≦ F＜70 Base Frequency*512 2 50 70≦ F＜130 Base Frequency*512 2 50 130≦ F＜250 Base Frequency*512 2 50 250≦ F＜440 Base Frequency*512 2 30 Add ±0.2% of range to normal measurement. However, for n th order component input, add (n th order reading)*(10/n+1) % to (n-1) order and (n+1) order. Example: 10V@60Hz 0.1A@600Hz sin wave, 10th order current display 0.1A, current values for adjacent stages calculated thus:

Up to 50 th order Accuracy 9th order Maximum Tolerance 0.1A * (10/10+1))% = 0.0018A~0.0022A 11th order Maximum Tolerance 0.1A * (10/10+1)% = 0.0018A~0.0022A Harmonic Analysis with Line filter specifications Base Frequency -3dB Frequency Deadline Frequency Stages (Degredation ~0.707) 50Hz ~500HZ 10TH 60Hz ~500HZ ~8TH 100Hz ~500HZ 5TH 250Hz ~500HZ 2TH A/D Conversion Rate 23040 SPS (45Hz) ~ 225280SPS (440Hz) A/D Precision 16Bits FFT Conversion Precision 32Bits Panel Update Rate 0.25s / 0.5s / 1s / 2s / 5s 0.1A 0.0022A 0.0022A Energy

Testing Method V+, V- Input Terminal Short Circuit, I+,I- open circuit, Apply AC voltage between CASE & V+ and test. Voltage Specifications < Voltage * F * 0.3 /1000 F = KHz Unit For example 600V 10KHz: 600V *10 *0.3 /1000 = 1.8V Current Specifications < Voltage * F * 0.01 / 1000000 F = KHz Unit For example 600V 10KHz 600V *10 *0.01 /1000000 = 0.00006A

Current Testing Method V+, V- Input Voltage, I+,I- Idle Contact Voltage Effects on Current Specifications <0.0005% * F of Voltage/100 F = KHz Unit Voltage Testing Method I+, I- Input Current, V+,V- use 5cm wire short circuit Current Effects on Voltage Specifications <0.0005% * F * Current F = KHz unit Storage Temperature -10°C ~ 60°C Operating Temperature 23°C ~ ±5°C Operating Humidity 30% ~ 75%

Section 7.1 Serial Communications Specifications Electrical characteristics RS232 Connection Point-to-point Communications Full-duplex Synchronization Start-stop system Baud rate 19200/38400/57600/115200 (can change settings) Start bit 1 bit Data length 8 bits Parity No parity Stop bit 1 bit Section 7.2 Symbols Symbol Description Example < > Defined value DISP, =1 to 3 { } One of the options in {} is selected MODE{RMS | VME | DC | HARM} | Exclusive OR [ ] Abbreviated [:CONF]:VOLT:AUTO = :VOLT:AUTO Section 7.3 Commands Command Description COMMunicateG roup :COMMunicate:LOCKout Sets/cancels local lockout. :COMMunicate:REMote Sets remote/local condition. CONFigure Group :CONFigure? Queries all settings related to the measurement conditions. [:CONFigure]:AVERaging? Queries all settings related to the averaging function.

[:CONFigure]:AVERaging:TYPE Sets/queries averaging type and coefficient. [:CONFigure]:CURRent? Queries all settings related to the current range. [:CONFigure]:CURRent:AUTO Sets/queries the current auto range ON/OFF. [:CONFigure]:CURRent:RANGe Sets/queries the current range. [:CONFigure]:FILTer Sets/queries the frequency filter ON/OFF. [:CONFigure]:LFILter Sets/queries the line filter ON/OFF. [:CONFigure]:MHOLd[:STATe] Sets/queries the MAX hold ON/OFF. [:CONFigure]:MODE Sets/queries the measurement mode. [:CONFigure]:SCALing? Queries all settings related to the scaling function. [:CONFigure]:SCALing:{PT|CT|SFACtor}? Queries all settings related to scaling constants for {voltage|current|power}. [:CONFigure]:SCALing:{PT|CT|SFACtor}[:ALL] Sets the scaling constants for all elements of {voltage|current|power}. [:CONFigure]:SCALing:{PT|CT|SFACtor}:ELEMent1 Sets the scaling values for each element of {voltage|current|power}. [:CONFigure]:SCALing[:STATe] Sets/queries the scaling function ON/OFF. [:CONFigure]:SYNChronize Sets/queries the measurement synchronization source. [:CONFigure]:VOLTage? Queries all settings related to the voltage range. [:CONFigure]:VOLTage:AUTO Sets/queries the voltage auto range ON/OFF. [:CONFigure]:VOLTage:RANGe Sets/queries the voltage range. DISPlay Group :DISPlay? Queries all the display settings. :DISPlay:ELEMent Sets/queries the element to be displayed. :DISPlay:FUNCtion Sets/queries the function to be displayed. :DISPlay:MODE Sets/queries the contents of the display. :DISPlay:RESolution Sets/queries the number of display digits. HARMonics Group :HARMonics? Queries all settings related to harmonic measurement. :HARMonics:DISPlay? Queries all settings related to the display in case of harmonic measurement. :HARMonics:DISPlay:ORDer Sets/queries the order of the harmonic component to be shown on display B. :HARMonics:ELEMent Sets/queries the element for harmonic measurement. :HARMonics[:STATe] Sets/queries the harmonic measurement mode ON/OFF. :HARMonics:SYNChronize Sets/queries the input to be used as PLL source. :HARMonics:THD Sets/queries the computation method for harmonic

:INTEGrate:MODE Sets/queries the integration mode. :INTEGrate:RESet Resets the integration values. :INTEGrate:STARt Starts integration. :INTEGrate:STOP Stops integration. :INTEGrate:TIMer Sets/queries the integration timer. MATH Group :MATH? Queries all settings related to the computing function. :MATH:CFACtor Sets/queries the computing equation of the crest factor. MEASure Group :MEASure? Queries all settings related to measurement/computation data. :MEASure:HARMonics? Queries all settings related to harmonic measurement data. :MEASure:HARMonics:ITEM? Queries all settings related to the output items of harmonic measurement data. :MEASure:HARMonics:ITEM:PRESet Sets the ON/OFF pattern for all communication outputs of the harmonic measurement function. :MEASure:HARMonics:ITEM:{SYNChronize|} Sets/queries the communication output item of harmonic measurement ON/OFF. :MEASure:HARMonics:VALue? Queries harmonic measurement data set by commands other than “MEASure:HARMonics:ITEM” (ASCII format). :MEASure:NORMal? Queries all settings related to normal measured/computed data. :MEASure[:NORMal]:ITEM? Queries all settings related to the output items of normal measured/computed data. :MEASure[:NORMal]:ITEM:PRESet Sets the ON/OFF pattern for all communication outputs of the normal measurement function. :MEASure[:NORMal]:ITEM:{TIME|MATH} Sets/queries the ON/OFF state of the communication output of {integration time|MATH}. :MEASure[:NORMal]:ITEM:? Queries communication output settings of the normal measurement function. :MEASure[:NORMal]:ITEM::ELEMent1 Sets/queries the communication output items concerning each element ON/OFF.

commands other than“MEASure[:NORMal]:ITEM” (ASCII format). RECall Group :RECall? Queries all settings related to recalling data. :RECall:INTerval Sets/queries the recalling interval. :RECall:PANel Retrieves the setup parameters file. :RECall[:STATe] Sets/queries recalling ON/OFF. SAMPle Group :SAMPle? Queries all settings related to sampling. :SAMPle:HOLD Sets/queries to hold the output of data (display, communication). :SAMPle:RATE Sets the display update rate or queries the current setting. STATus Group :STATus:ERRor? Queries the occurred error code and message. STORe Group :STORe? Queries all settings related to storing data. :STORe:INTerval Sets/queries the interval for storing data. :STORe:PANel Saves the setup parameters to a file. :STORe[:STATe] Sets/queries the store function ON/OFF. Common Command Group *CAL? Executes zero-level compensation and queries the results. *CLS Clears the standard event register, extended event register and error queue. *ESE Sets/queries the value of the standard event enable register. *ESR? Sets/queries the value of the standard event register and clears it. *IDN? Queries the instrument model. *OPC This command is not supported by this instrument. *OPC? This command is not supported by this instrument, and is always “1”. *OPT? Queries installed options. *PSC Sets/queries whether or not to clear some registers at power ON. *RST Initializes the setup parameters. *SRE Sets/queries the value of the service request enable register. *STB? Queries the value of the status byte register. *TRG Executes the same operation as the TRIG(SHIFT+HOLD) key. *TST? Executes a self-test and queries the results. *WAI This command is not supported by this instrument. Communicate group: COMMunicate:LOCKout

Syntax COMMunicate:LOCKout {} Example COMMUNICATE:LOCKout ON COMMunicate:REMote Function Sets remote (ON) or local mode (OFF). Syntax COMMunicate:REMote {} Example COMMUNICATE:REMOTE ON Configure group: CONFigure? Function Queries all the settings related to the measurement conditions. Syntax CONFigure? Example CONFIGURE? ->:MODE DC;:VOLT:RANG 1.000000E+01;:AUTO 1;:CURR:RANG 1.000000E-02;:AUTO 0;:FILT 0;:LFIL 0;:SCAL 0;:SCAL:PT:ELEM1 1.000000E+00;:SCAL:CT:ELEM1 1.000000E+00;:SCAL:SFAC:ELEM1 1.000000E+00;:AVER 0;:AVER:TYPE EXP8;:SYNC V;:MHOL 0 [CONFigure]:AVERaging? Function Queries all the setting values related to the averaging function. Syntax [CONFigure]:AVERaging? Example [CONFIGURE]:AVERAGING? -> :AVER 0;AVER:TYPE EXP8 [CONFigure]:AVERaging[:STATe] Function Sets averaging ON/OFF, or queries the current status. Syntax [CONFigure]:AVERaging[:STATe] {} [CONFigure]:AVERaging:STATe? Example [CONFIGURE]:AVERAGING:STATE OFF [CONFIGURE]:AVERAGING:STATE?-> :AVER 0 [CONFigure]:AVERaging:TYPE Function Sets the averaging type and coefficient, queries the current setting. Syntax [CONFigure]:AVERaging:TYPE {(LIN|EXP),} [CONFigure]:AVERaging:TYPE? {}=8, 16, 32, 64 (averaging coefficient) Example [CONFIGURE]:AVERAGING:TYPE LIN,8 [CONFIGURE]:AVERAGING:TYPE?->:AVER:TYPE LIN8

sensor range) Syntax [CONFigure]:CURRent? Example [CONFIGURE]:CURRENT? ->:CURR:RANG 1.000000E-02;AUTO 0 [CONFigure]:CURRent:AUTO Function Sets the current auto range ON/OFF, or queries the current setting. Syntax [CONFigure]:CURRent:AUTO {} [CONFigure]:CURRent:AUTO? Example [CONFIGURE]:CURRENT:AUTO ON [CONFIGURE]:CURRENT:AUTO? ->:CURR:AUTO 0 [CONFigure]:CURRent:RANGe Function Sets the current range, queries the current setting. Syntax [CONFigure]:CURRent:RANGe {} [CONFigure]:CURRent:RANGe? =5mA to 20A (0.005|0.01,0.02|0.03,0.05|0.1,0.2|0.3,0.5|1,2|3,5|10,20A) Example Setting of current range/query [CONFIGURE]:CURRENT:RANGE 20A [CONFIGURE]:CURRENT:RANGE?-> :CURR:RANG 2.000000E+01 [CONFigure]:FILTer Function Sets the frequency filter ON/OFF, queries the current setting. Syntax [CONFigure]:FILTer {} [CONFigure]:FILTer? Example [CONFIGURE]:FILTER OFF [CONFIGURE]:FILTER? ->:FILT 0 [CONFigure]:LFILter Function Sets the line filter ON/OFF queries the current setting. Syntax [CONFigure]:LFILter {} [CONFigure]:LFILter? Example [CONFIGURE]:LFILTER OFF [CONFIGURE]:LFILTER?-> :LFIL 0

Syntax [CONFigure]:MHold[:STATe] {} [CONFigure]:MHold[:STATe]? Example [CONFIGURE]:MHOLD:STATE OFF [CONFIGURE]:MHOLD:STATE? ->:MHOL 0 [CONFigure]:MODE Function Sets the measurement mode of current and voltage, queries the current setting. Syntax [CONFigure]:MODE {RMS|VMEan|DC|HARMonics} [CONFigure]:MODE? Example [CONFIGURE]:MODE RMS [CONFIGURE]:MODE? -> :MODE RMS [CONFigure]:SCALing? Function Queries all settings relating to the scaling function. Syntax [CONFigure]:SCALing? Example [CONFIGURE]:SCALING? -> :SCAL 0;:SCAL:PT:ELEM1 1.000000E+00;:SCAL:CT:ELEM1 1.000000E+00;:SCAL:SFAC:ELEM1 1.000000E+00 [CONFigure]:SCALing:{PT|CT|SFACtor}[{:ALL|ELEM1}] Function Sets the scaling constants for element1 of{voltage|current|power} at once. queries the current setting. Syntax [CONFigure]:SCALing:{PT|CT|SFACtor}[{:ALL|ELEM1}] {} {}=0.001 to 9999 Example [CONFIGURE]:SCALING:PT:ALL 1.000 [CONFIGURE]:SCALING:PT:ALL?-> :SCAL:PT:ELEM1 1.000000E+00 Description The setting values are rounded as follows. Less than 1.000 : Three digits after the decimal point are valid. 1.000 to 9999 : The first five digits are valid. [CONFigure]:SCALing[:STATe] Function Sets scaling ON/OFF, queries the current setting. Syntax [CONFigure]:SCALing[:STATe] {} [CONFigure]:SCALing:STATe?

[CONFIGURE]:SCALING:STATE?-> :SCAL 0 [CONFigure]:SYNChronize? Function Sets the measurement synchronization source/queries the current setting. Syntax [CONFigure]:SYNChronize {VOLTage|CURRent|AUTO|OFF} [CONFigure]:SYNChronize? Example [CONFIGURE]:SYNCHRONIZE VOLTAGE? [CONFIGURE]:SYNCHRONIZE? ->:SYNC V [CONFigure]:VOLTage? Function Queries all settings relating to voltage range. Syntax [CONFigure]:VOLTage? Example [CONFIGURE]:VOLTAGE? -> :VOLT:RANG 1.000000E+01;AUTO 1 [CONFigure]:VOLTage:AUTO Function Sets the voltage auto range ON/OFF, queries the current setting. Syntax [CONFigure]:VOLTage:AUTO {} [CONFigure]:VOLTage:AUTO? Example [CONFigure]:VOLTage:AUTO ON [CONFIGURE]:VOLTAGE:AUTO?-> :VOLT:AUTO 1 [CONFigure]:VOLTage:RANGe Function Sets the voltage range/queries the current setting. Syntax [CONFigure]:VOLTage:RANGe {} [CONFigure]:VOLTage:RANGe? =10V to 600V (10, 15|30,60|100,150|300, 600V) Example [CONFIGURE]:VOLTAGE:RANGE 600V [CONFIGURE]:VOLTAGE:RANGE?-> :VOLT:RANG 6.000000E+02 [CONFigure]:ACLINE Function Sets the ACLINE /queries the current setting. Syntax [CONFigure]:ACLINE {} [CONFigure]:VOLTage:RANGe? < acline >= (50HZ,60HZ) Example [CONFIGURE]:ACLINE 60HZ [CONFIGURE]:ACLINE?-> :ACLINE 60Hz

Syntax [CONFigure]:CFACtor {},{} [CONFigure]:CFACtor? < cfac >= (3,9) =(1) Example [CONFIGURE]:CFACtor 3,1 [CONFIGURE]:CFACtor?-> :MATH:CFAC 3,1 [CONFigure]: MCMP Function Sets the MCMP/queries the current setting. Syntax [CONFigure]:MCMP {} [CONFigure]:MCMP? Example [CONFIGURE]:MCMP OFF [CONFIGURE]:MCMP?-> :MCMP 0 DISPlay? Function Queries all the display settings. Syntax DISPlay? = 1 to 3 1:Display A 2:Display B 3:Display C Example DISPlay1? -> :DISP:MODE VAL;FUNC V;ELEM 1;RES HIGH DISPlay:ELEMent Function Sets the element to be displayed/queries the current setting. Syntax DISPlay:ELEMent {|SIGMa} DISPlay:ELEMent? = 1 to 3 1:Display A 2:Display B 3:Display C {}=1 Example DISPLAY1:ELEMENT 1 DISPLAY1:ELEMENT? -> :DISP:ELEM 1

current setting. Syntax DISPlay:FUNCtion {} DISPlay:FUNCtion? = 1 to 3 1:Display A 2:Display B 3:Display C In case of normal measurement: = {V|A|W|VA|VAR|PF|DEGRee|VHZ|AHZ|WH|WHP|WHM|AH|AHP|AHM |MATH|VPK|APK|TIME} In case of harmonic measurement: ={V|A|W|PF|VHZ|AHZ|VTHD|ATHD|VCON|ACON|WCON |VDEG|ADEG|ORDer} Example DISPLAY1:FUNCTION V DISPLAY1:FUNCTION? -> :DISP:FUNC A DISPlay:MODE Function Sets the contents of the display/queries the current setting. Syntax DISPlay:MODE {VALue|RANGe } DISPlay:MODE? = 1 to 3 1:Display A 2:Display B 3:Display C VALue: displays measurement data RANGe: displays the present range of voltage and current Example DISPLAY1:MODE VALUE DISPLAY1:MODE? -> :DISP:MODE VAL Description will be ignored. The contents of all the displays A to C will be received DISPlay:RESolution Function Sets the number of displayed digits/queries the current setting. Syntax DISPlay:RESolution {HIGH|Low} DISPlay:RESolution?

1:Display A 2:Display B 3:Display C Example DISPLAY1:RESOLUTION LOW DISPLAY1:RESOLUTION? -> :DISP:RES LOW Description will be ignored. The contents of all the displays A to C will be received. DISPlay:INTerval Function Sets the INTerval ON/OFF, queries the current setting. Syntax DISPlay: INTerval {} DISPlay: INTerval? Example DISPLAY: INTerval OFF DISPLAY: INTerval? -> :DISP:INT 0;FUNC V;TIM 1 DISPlay:INTerval:FUNCtion Function Sets the function to be displayed/queries the current setting. Syntax DISPlay:INTerval:FUNCtion {} DISPlay:INTerval:FUNCtion? In case of RMS&VMEAN Mode: ={V|A|W|VA|VAR| VCF|ACF|PF} In case of DC Mode: ={V|A|W } In case of HARMONIC Mode: ={ORDER|V|A|W |PF} Example DISPLAY:INTerval:FUNCTION V DISPLAY1:INTerval:FUNCTION? -> :DISP:INT:FUNC V DISPlay:INTerval:STATe Function Sets the INTerval ON/OFF, queries the current setting. Syntax DISPlay:INTerval:STATe {} DISPlay:INTerval:STATe? Example DISPLAY:INTerval:STATe OFF DISPLAY:INTerval:STATe? -> :DISP:INT 0 DISPlay:INTerval:TIMer Function Sets the INTerval TIMer, queries the current setting.

DISPlay:INTerval:TIMer? =1 to 30 Example DISPLAY:INTerval:TIMer 1 DISPLAY:INTerval:TIMer? -> :DISP:INT:TIM 1 DISPlay:INTENsity Function Sets the INTENsity, queries the current setting. Syntax DISPlay:INTENsity { } DISPlay:INTerval:INTENsity? =0 to 5 Example DISPlay:INTENsity 3 DISPlay:INTENsity? -> :DISP:INTEN 3 HARMonics? Function Queries all settings relating to harmonic measurement. Syntax HARMonics? Example HARMONICS? -> :HARM 0;HARM:ELEM 1;SYNC V,1;THD IEC;DISP:ORD 1 HARMonics:DISPlay? Function Queries all settings concerning the display in case of harmonic measurement. Syntax HARMonics:DISPlay? Example HARMONICS:DISPLAY? HARMONICS:DISPLAY? -> :HARM:DISP:ORD 1 HARMonics:DISPlay:ORDer Function Sets the order of the harmonic component to be shown on display A, queries the current setting. Syntax HARMonics:DISPlay:ORDer {} HARMonics:DISPlay:ORDer? {}=1 to 50 Example HARMONICS:DISPLAY:ORDER 1 HARMONICS:DISPLAY:ORDER?-> :HARM:DISP:ORD 1 HARMonics:ELEMent Function Sets the element for harmonic measurement/queries the current

HARMonics:ELEMent? {}=1 Example HARMONICS:ELEMENT 1 HARMONICS:ELEMENT?-> :HARM:ELEM 1 HARMonics[:STATe] Function Sets the harmonic measurement mode ON/OFF, queries the current setting. Syntax HARMonics[:STATe] {} HARMonics[:STATe]? Example HARMONICS:STATE ON HARMONICS:STATE? -> :HARM 1 HARMonics:SYNChronize Function Sets the fundamental frequency for PLL synchronization (PLL source)/queries the current setting. Syntax HARMonics:SYNChronize {(V|A|AUTO),(ELEMent<1>)} HARMonics:SYNChronize? Example HARMONICS:SYNCHRONIZE V,1 HARMONICS:SYNCHRONIZE?-> :HARM:SYNC V,1 HARMonics:THD Function Sets the computation method for harmonic distortion (THD) for harmonic measurement/queries the current setting. Syntax HARMonics:THD {IEC|CSA} HARMonics:THD? Example HARMONICS:THD IEC HARMONICS:THD? -> :HARM:THD IEC INTEGrate? Function Queries all settings relating to integration. Syntax INTEGrate? Example INTEGRATE? -> :INTEG:MODE NORM;TIM 00,00,00 INTEGrate:MODE Function Sets the integration mode/queries the current setting.

INTEGrate:MODE? Example INTEGRATE:MODE NORMAL INTEGRATE:MODE?-> :INTEG:MODE NORM INTEGrate:RESet Function Resets the integrated values. Syntax INTEGrate:RESet Example INTEGRATE:RESET INTEGrate:STARt Function Starts integration. Syntax INTEGrate:STARt Example INTEGRATE:START INTEGrate:STOP Function Stops integration. Syntax INTEGrate:STOP Example INTEGRATE:STOP INTEGrate:TIMer Function Sets the integration timer/queries the current setting. Syntax INTEGrate:TIMer {,,} {,,}=0,0,0 to99,59,59 Example INTEGRATE:TIMER 10,0,0 INTEGRATE:TIMER? -> :INTEG:TIM 10,00,00 MATH? Function Queries all settings related to the computing function. Syntax MATH? Example MATH? -> :MATH:CFAC 9,1 MATH:CFACtor Function Sets the CFACtor /queries the current setting. Syntax MATH:CFACtor {},{} MATH:CFACtor? < cfac >= (3,9) =(1)

MATH:CFACtor?-> :MATH:CFAC 3,1 MEASure? Function Queries all the settings related to measurement/computation data. Syntax MEASure? Example MEASURE? -> :MEAS:ITEM:V:ELEM1 1;:MEAS:ITEM:A:ELEM1 1;:MEAS:ITEM:W:ELEM1 1;:MEAS:ITEM:VA:ELEM1 0;:MEAS:ITEM:VAR:ELEM1 0;:MEAS:ITEM:PF:ELEM1 0;:MEAS:ITEM MEASure:HARMonics? Function Queries all settings related to harmonic measurement data. Syntax MEASure:HARMonics? Example MEASURE:HARMONICS?-> :MEAS:HARM:ITEM:SYNC 1;VTHD 1;V 1;VCON 1;ATHD 1;A 1;ACON 1;PF 1;W 1;WCON 1;VDEG 1;ADEG 1 MEASure:HARMonics:ITEM? Function Queries all settings related to the communication output items of harmonic measurement data. Syntax MEASure:HARMonics:ITEM? Example MEASURE:HARMONICS:ITEM? -> (Same result as for MEASure:HARMonics?) MEASure:HARMonics:ITEM:PRESet Function Sets the ON/OFF pattern for all communication outputs of the harmonic measurement function. Syntax MEASure:HARMonics:ITEM:PRESet {VPATtern|APATtern|WPATtern| DPATtern|ALL|CLEar} Example MEASURE:HARMONICS:ITEM:PRESET VPATTERN Description The following six patterns can be selected. VPATtern:SYNChronize/VTHD/V/VCON -> ON, others ->OFF APATtern:SYNChronize/ATHD/A/ACON -> ON, others ->OFF WPATtern:SYNChronize/PF/W/WCON -> ON, others ->OFF DPATtern:SYNChronize/VDEG/ADEG -> ON, others ->OFF ALL: all items -> ON CLEar: all items -> OFF MEASure:HARMonics:ITEM:{ SYNChronize|

ON/OFF, queries the current setting. Syntax MEASure:HARMonics:ITEM:{ SYNChronize|} {} SYNChronize=PLL source ={VTHD|V|VCON|ATHD|A|ACON|PF|W|WCON|VDEG|ADEG} Example MEASURE:HARMONICS:ITEM:VTHD ON MEASURE:HARMONICS:ITEM:VTHD?-> :MEAS:HARM:ITEM:VTHD 1 Description The selection SYNChronize is for outputting the frequency of the PLL source. You can query the PLL source input by the command HARMonics:SYNChronize? MEASure:HARMonics:VALue? Function Queries harmonic measurement data set by commands other than ”MEASure:HARMonics:ITEM” (ASCII format). Syntax MEASure:HARMonics:VALue? Example MEASURE:HARMONICS:VALUE? -> 3.362256E+02,9.336657E-04,9.999695E+01,1.852538E+02,..... MEASure:NORMal? Function Queries all settings related to normal measured/computed data. Syntax MEASure:NORMal? Example MEASURE:NORMAL? -> :MEAS:ITEM:V:ELEM1 1;:MEAS:ITEM:A:ELEM1 1;:MEAS:ITEM:W:ELEM1 1;:MEAS:ITEM:VA:ELEM1 0;:MEAS:ITEM:VAR:ELEM1 0;:MEAS:ITEM:PF:ELEM1 0;:MEAS:ITEM:DEGR:ELEM1 0;:MEAS:ITEM:VHZ:ELEM1 0;:MEAS:ITEM:AHZ:ELEM1 0;:MEAS:ITEM:WH:ELEM1 0;:MEAS:ITEM:AH:ELEM1 0;:MEAS:ITEM:VPK:ELEM1 0;:MEAS:ITEM:APK:ELEM1 0;:MEAS:ITEM:TIME:ELEM1 0 MEASure[:NORMal]:ITEM? Function Queries all settings related to the communication output items of normal measured/computed data. Syntax MEASure[:NORMal]:ITEM?

the same as for MEASure:NORMal? ) MEASure[:NORMal]:ITEM:PRESet Function Sets the ON/OFF pattern for all communication outputs of the normal measurement function. Syntax MEASure[:NORMal]:ITEM:PRESet {NORMal|INTEGrate|CLEar} Example MEASURE:NORMAL:ITEM:PRESET NORMAL Description The following three patterns can be selected. NORMal: V/A/W -> ON, others -> OFF INTEGrate: W/WH/AH/TIME -> ON, others ->OFF CLEar: all items -> OFF MEASure[:NORMal]:ITEM:{TIME|MATH} Function Sets the communication output of elapsed integration time ON/OFF, queries about the current setting. Syntax MEASure[:NORMal]:ITEM:TIME {} MEASure[:NORMal]:ITEM:TIME ? Example MEASURE:NORMAL:ITEM:TIME OFF MEASURE:NORMAL:ITEM:TIME?-> :MEAS:ITEM:TIME 0 MEASure[:NORMal]:ITEM::ELEMent1 Function Sets the communication output concerning element1 ON/OFF, queries the current setting. Syntax MEASure[:NORMal]:ITEM::ELEMent1 {} ={V|A|W|VA|VAR|PF|DEGRee|VHZ|AHZ|WH|WHP|WHM|AH|AHP|AHM|VPK| APK} MEASure[:NORMal]:ITEM::ELEMent1? Example MEASURE:NORMAL:ITEM:V:ELEMENT1 ON MEASURE:NORMAL:ITEM:V:ELEMENT1?-> :MEAS:ITEM:V:ELEM1 1 MEASure[:NORMal]:VALue? Function Queries normal measured/computed data set by commands other than “MEASure[:NORMal]:ITEM” (ASCII format). Syntax MEASure[:NORMal]:VALue?

*CAL? Function Execute zero-level compensation and queries the result. Syntax *CAL? Example *CAL? -> 0 Description “0” is returned when the zero-level compensation completes properly. Otherwise,“1” is returned. *CLS Function Clears the standard event register, extended event register and error queue. Syntax *CLS Example *CLS Description • The output will also be cleared if a *CLS command is appended after the program message terminator. *ESE Function Sets the value for the standard event enable register, or queries the current setting. Syntax *ESE {} *ESE? {}=0 to 255 Example *ESE 15 *ESE? -> 15 *ESR? Function Queries the value of the standard event register and clears it at the same time. Syntax *ESR? Example *ESR? -> 32 Description • Each bit is expressed as a decimal number. • It is possible to ascertain the type of event which has occurred, while SRQ is occuring.

Syntax *IDN? Example *IDN? -> MICROTEST, PM7120 Description A reply consists of the following information:, *OPC Function When *OPC is sent, this command sets bit 0 (the OPC bit) of the standard event register to “1”. This command is not supported by this instrument. Syntax *OPC *OPC? Function When *OPC? is sent, “1” in (ASCII code) will be returned. This command is not supported by this instrument. Syntax *OPC? *OPT? Function Queries installed options. Syntax *OPT? Example *OPT? -> HARM,GPIB Description • “NONE” will be attached to the reply if no options are installed. *PSC Function Selects whether or not to clear the following registers when turning ON the power, or queries the current setting. The registers are the standard event enable register, the extended event enable register and the transition filter. However, they cannot be cleared if the parameter is “0.” Syntax *PSC {} *PSC? {}=0(no clearance), other than 0(clearance) Example *PSC 1 *PSC? -> 1 This command is not supported by this instrument. *RST Function Resets (initializes) the present settings. Syntax *RST

*SRE Function Sets the value of the service request enable register, or queries the current setting. Syntax *SRE {} *SRE? {}=0 to 255 Example *SRE 245 *SRE? -> 181 Description • Each bit is expressed as a decimal number. *STB? Function Queries the value of the status byte register. Syntax *STB? Example *STB? -> 4 Description • Each bit is expressed as a decimal number. *TRG Function Executes the same operation as the TRIG (SHIFT+HOLD) key on the front panel. Syntax *TRG Description Executes the same operation as when using the multi line message GET. *TST? Function Executes a self-test and queries the result. All internal memory boards are tested. Syntax *TST? Example *TST? -> 0 Description “0” will be returned when the result are satisfactory. If an abnormality is detected, “1”will be returned. This command is not supported by this instrument. *WAI Function Waits for the command following *WAI until execution of the designated overlap command has been completed.

V1.01 2015/9/7 Frequencry accuracy & common mode specification change.