Tektronix 7B53A Manuals

PLEASE CHECK FOR CHANCE INFORMATION AT THE REAR OF THIS MANUAL . IN A/7N A TI COMMITTED TO EXCELLENCE N MANIA. Tektronix, Inc . P.O . Box 500 Beaverton, Oregon 97077 070-1342-01 Product First Printing SEP 1980 Group 42 Revised MAY 1988 Copyright (~) 1972, 1980 Tektronix, Inc . All rights reserved . Contents of this publication may not be reproduced in any form without the written permission of Tektronix, Inc . Products of Tektronix, Inc . and its subsidiaries are covered by U .S . and foreign patents and/or pending patents . TEKTRONIX, TEK, SCOPE-MOBILE, and V' . are registered trademarks of Tektronix, Inc . TELEQUIPMENT is a registered trademark of Tektronix U.K . Limited . Printed in U.S.A . Specification and price change privileges are reserved . INSTRUMENT SERIAL NUMBERS Each instrument has a serial number on a panel insert, tag, or stamped on the chassis . The first number or letter designates the country of manufacture . The last five digits of the serial number are assigned sequentially and are unique to each instrument . Those manufactured in the United States have six unique digits . The country of manufacture is identified as follows : 13000000 Tektronix, Inc ., Beaverton, Oregon, USA 100000 Tektronix Guernsey, Ltd ., Channel Islands 200000 Tektronix United Kingdom, Ltd ., London 300000 Sony/Tektronix, Japan 700000 Tektronix Holland, NV, Heerenveen, The Netherlands Section 1 SPECIFICATION . . . . . . . . . . . . . . . . . . Section 2 OPERATING INSTRUCTIONS . . . . . . . . Controls and Connectors . . . . . . . . . . . Operating Checkout . . . . . . . . . . . . . . . General Operating Instructions . . . . . . . Applications . . . . . . . . . . . . . . . . . . . . . . Repackaging for Shipment . . . . . . . . . . REV DEC 1982 LIST OF ILLUSTRATIONS . . . . . . . . . . . . . . . . . . . . LIST OF TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . OPERATORS SAFETY SUMMARY . . . . . . . . . . . . . SERVICE SAFETY SUMMARY . . . . . . . . . . . . . . . . . The remaining portion of this Table of Contents lists the servicing instructions. 7hese servicing instructions are for use by qualified personnel only. To avoid electrical shock, do not perform any servicing other than that called out in the operating instructions unless qualified to do so . Section 3 7B53A/7B53AN Section 5 MAINTENANCE . . . . . . . . . . . . . . . . . . 5-1 Preventive Maintenance . . . . . . . . . . . . 5-1 Troubleshooting . . . . . . . . . . . . . . . . . . . 5-2 Corrective Maintenance . . . . . . . . . . . . 5-4 Page Page iii Section 3 THEORY OF OPERATION (cont'd) iv Delayed Trigger Generator v (SN B209999 & Below) . . . . . . . . . . . . . 3-12 vii Delayed Sweep Generator . . . . . . . . . . 3-12 1-1 Horizontal Preamp . . . . . . . . . . . . . . . . . 3-17 Readout Switching . . . . . . . . . . . . . . . . 3-18 2-1 2-1 Section 4 CALIBRATION . . . . . . . . . . . . . . . . . . . . 4-1 2-3 Test Equipment Required . . . . . . . . . . . 4-1 2-6 PART 1 PERFORMANCE CHECK . . . . 4-6 2-13 Trigger System Check . . . . . . . . . . . . . . 4-7 2-20 Horizontal System Check . . . . . . . . . . . 4-13 PART 2 ADJUSTMENT . . . . . . . . . . . . 4-20 Trigger System Adjustment . . . . . . . . . . 4-21 Horizontal System Adjustment . . . . . . . 4-24 THEORY OF OPERATION . . . . . 3-1 . . . . . . . . Section 6 OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . Simplified Block Diagram . . . . . . . . . . . . 3-1 Circuit Operation . . . . . . . . . . . . . . . . . . 3-3 Main Trigger Preamp . . . . . . . . . . . . . . . 3-4 Section 7 REPLACEABLE ELECTRICAL PARTS Main Trigger Generator (SN B210000 & Up 7B53A Only) . . . . . . . . . . . . . . . . . 3-4 Main Trigger Generator (SN B209999 Section 8 DIAGRAMS AND CIRCUIT BOARD & Below) . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 DESCRIPTIONS Main Sweep Generator . . . . . . . . . . . . . 3-9 Delayed Trigger Generator (SN B210000 & Up 7B53A Only) . . . . . 3-12 Section 9 REPLACEABLE MECHANICAL PARTS

Tektronix, Inc. P.O. Box 500 Beaverton, Oregon 97077 070-1342-01 Product Group 42 lI!ktron~ COMMITTED TO EXCELLENCE PLEASE CHECK FOR CHANGE INFORMATION AT THE REAR OF THIS MANUAl. 7B53A/7B53AN DUAL TIME BASE INSTRUCTION MANUAL /;< 1/:;-" t?~ ,)'- First Printing SEP 1980 Revised MAY 1988 Scans By ArtelMedia Artek Media 1042 Plummer Cir. SW Rochester. MN 55902 www.arlekmedia.com "High resolution scans of obsolete technical manuals" If your looking for a quality scanned technical manual in PDF format please visit our WEB site al www.artekmedia.com or drop us an email at [email protected] and we will be happy to email you a current list of the manuals we have available. If you don't see the manual you need on the list drop us a line anyway we may still be able to point you to other sources. If you have an existing manual you would like scanned please write for details, This can often be done very reasonably in consideration for adding your manual to our library. Typically the scans in our manuals are done as follows: 1) Typed text pages are typically scanned in black and while at 300 dpi. 2) Photo pages are typically scanned in gray scale mode at 600 dpi 3) Schemalic diagram pages are typically scanned in black and white at 600 dpi unless the original manual had colored high lighting (as is the case for some 70's vintage Tektronix manuals). If you purchased this manual from us (typically through our Ebay name of ArtekMedia) thank you very much. If you received this from a well-meaning "friend" for free we would appreciale your treating this much like you would "share ware". By that we mean a donation of at least $5-10 per manual is appreciated in recognition of the time (a manual can take as much as 40 hours to reproduce, book, link etc.), energy and quality of effort that went into preserving this manual. Donations via PayPal go to: [email protected] or can be mailed to us the address above. Dave & Lynn Henderson Artek Media Copyright @) 1972, 1980 Tektronix, Inc. All rights reserved. Contents of this publication may not be reproduced in any form without the written permission of Tektronix, Inc. Products of Tektronix, Inc. and its subsidiaries are covered by U.S. and foreign patents and/or pending patents. TEKTRONIX, TEK, SCOPE-MOBILE, and " are registered trademarks of Tektronix, Inc. TELEQUIPMENT is a registered trademark of Tektronix U.K. Limited. Printed in U.S.A. Specification and price change privileges are reserved. INSTRUMENT SERIAL NUMBERS Each instrument has a serial number on a panel insert, tag, or stamped on the chassis. The first number or letter designates the country of manufacture. The last five digits of the serial number are assigned sequentially and are unique to each instrument. Those manufactured in the United States have six unique digits. The country of manufacture is identified as follows: BOOOOOO 100000 200000 300000 700000 Tektronix, Inc., Beaverton, Oregon, USA Tektronix Guernsey, Ltd., Channel Islands Tektronix United Kingdom, Ltd., London Sony/Tektronix, Japan Tektronix Holland, NV, Heerenveen, The Netherlands

Tektronix, Inc. 070-1252-00 TEKTRONIX® INSTRUCTION MANUAL P.O. Box 500 Beaverton, Oregon 97005 772 Scans By ArtelMedia Artek Media 1042 Plummer Cir. SW Rochester. MN 55902 www.arlekmedia.com "High resolution scans of obsolete technical manuals" If your looking for a quality scanned technical manual in PDF format please visit our WEB site al www.artekmedia.com or drop us an email at [email protected] and we will be happy to email you a current list of the manuals we have available. If you don't see the manual you need on the list drop us a line anyway we may still be able to point you to other sources. If you have an existing manual you would like scanned please write for details, This can often be done very reasonably in consideration for adding your manual to our library. Typically the scans in our manuals are done as follows: 1) Typed text pages are typically scanned in black and while at 300 dpi. 2) Photo pages are typically scanned in gray scale mode at 600 dpi 3) Schemalic diagram pages are typically scanned in black and white at 600 dpi unless the original manual had colored high lighting (as is the case for some 70's vintage Tektronix manuals). If you purchased this manual from us (typically through our Ebay name of ArtekMedia) thank you very much. If you received this from a well-meaning "friend" for free we would appreciale your treating this much like you would "share ware". By that we mean a donation of at least $5-10 per manual is appreciated in recognition of the time (a manual can take as much as 40 hours to reproduce, book, link etc.), energy and quality of effort that went into preserving this manual. Donations via PayPal go to: [email protected] or can be mailed to us the address above. Dave & Lynn Henderson Artek Media "T1!l!i!i:tmuil!lf." !ir!;!;", !::IiI.l!!'!!'~rt~!'I", 'Or,~n., !Pr'ini~,i!!!'i!~~i!t ilh~jf~iI.l!l!!>'t!l'~~~ 'I#f "~Jif~eif~C!'1i. ,A,~! ~~ijh'!:~ iF~.J.1iir.:.,f;r,d, (;t:li!t~el'lt~ 'D~ '!:hi!S lJ'y!bl~(:;§!ti~m i!1!UJl' ~)~ ~'Ii r:~~i}tI'IJIt.t.f!d litlaifli'l' form without permission of Tektronix, Inc. U.S.A. and foreign TEKTRONIX products covered by U.S. and foreign patents and/or patents pending. TEKTRONIX is a registered trademark of Tektronix, Inc.

MANUAL SUPPLEMENT TEKTRONIX 7B53A/7B53AN DUAL TIME BASE OPTION 5 INSTRUCTION MANUAL Tektronix, Inc. 070-1471-00 P.O. Box 500 Beaverton, Oregon 97005 772 WARRANTY This Tektronix product is warranted against defective materialsand workmanship, under normal use, for a period of one year from date of initial shipment. Tektronix will repair or replace, at its option, those products determined to be defective within the warranty period and returned, freight prepaid, to a Tektronix Service Center. There is no implied warranty for fitness of purpose. Please direct all requests for service or replacement parts to the nearest Tektronix Service Center or Field Office; include the type or part number of the product and its serial number. Copyright ® 1972 by Tektronix, Inc. All rights reserved. Contents of this publication may not be reproduced in any form without the permission of Tektronix, Inc. Products of Tektronix, Inc. and its subsidiaries are covered by U.S. and foreign patents and/or pending patents. TEKTRONIX, TEK, SCOPE-MOBILE, TELEQUIPMENT, and are registered trademarks of Tektronix, inc. Printed in U.S.A. Specification and price change privileges are reserved. 7B53A/7B53AN OPTION 5 SPECIFICATION General Information The TV Sync Separator permits TEKTRONIX real-time oscilloscopes to display composite video signals. The TV Sync Separator clips video information from the incoming video signal; then, it amplifies and separates the field or vertical trigger pulses from the line or horizontal trigger pulses. Line rate or field rate trigger pulses are provided depending on the position of the front panel switch. This manual insert describes the special features of the 7B53A/7B53AN OPTION 5 plug-in unit which has been modified to enable triggering on composite video signals through the use of a Sync Separator circuit. The EXT ÷ 10 and LINE positions of the Main Triggering Amplifier SOURCE switch have been replaced by the TV FIELD and TV LINE switch positions, allowing the sweeps to be triggered by the output of the Sync Separator circuit at a Field or Line Rate. The delayed sweep circuit has TV LINE/EXT or INT/EXT SOURCE triggering capability, depending on whether the connection is made to P903 or P904. Compatability The TV Sync Separator can be used with 7400, 7500, 7600, 7700, and 7900-Series real time TEKTRONIX oscilloscopes. External Graticules External graticules for the main frame are available. Use the following information when ordering: Main Frame External Graticule 7403N-7603 CCIR Composite, Part No. 378-0684-04 NTSC Composite, Part No. 378-0684-05 Main Frame External Graticule 7500,7700,7900 CCIR Composite, Part No. 378-0625-05 NTSC Composite, Part No. 378-0625-06 ELECTRICAL CHARACTERISTICS Connector Input or Output Signal COMPOSITE VIDEO IN (2 Major Divisions) Needs 2 major divisions peak-to- peak sync negative composite video signal. FIELD RATE A group of one to six pulses, whose minimum amplitude is 2 V nega­ tive, shall re-occur at a field rate. The width of each individual group of pulses shall not exceed 3H. LINE RATE The line trigger pulses available shall have a clean leading edge and a minimum amplitude of 180 mV negative. SYSTEM CHARACTERISTICS Compatibility Compatible with V and H sync signals of standard 405, 625, 819 Line/50 Hz, and 525 Line/60 Hz broadcast systems; 405 to 1201 Line closed circuit systems. Trigger Sensitivity 2 major divisions or more will provide stable V or H triggering. 1 7B53A/7B53AN OPTION 5 OPERATING INSTRUCTIONS Introduction This section describes using the TV Sync Separator portion of the time base plug-in unit. Using the TV Sync Separator Plug-In a. Connect a coaxial cable from the oscilloscope vertical signal input connector to a composite video signal source of such amplitude as to produce at least 2 major divisions of vertical deflection. Set the 7B53A/7B53AN OPTION 5 controls as follows: Main Triggering Amplifier SLOPE MODE COUPLING SOURCE AUTO DC TV FIELD TIME/DIV MAG Main Time Base 2 ms X1 b. Set the oscilloscope Main Triggering Amplifier SOURCE switch to TV FIELD and the SLOPE switch to —. c. Refer to the information under Obtaining a Display in this section to obtain a display. Adjusting the CLIPPING LEVEL Control (R914) NOTE If the input amplitude of the composite video changes, it may be necessary to readjust the CLIP­ PING LEVEL control (R914). a. Connect the composite video as described under the heading Using the TV Sync Separator Plug-In. b. Turn the CLIPPING LEVEL control (R914) fully clockwise. c. Set the oscilloscope controls to obtain the desired video display. d. Slowly rotate the CLIPPING LEVEL control (R914) counterclockwise until a point is found where the most stable video display results. TWO FIELD DISPLAY To obtain a two field display, adjust the LEVEL control to obtain a triggered display. The TIME/DIV VARIABLE control may be adjusted to obtain a display of slightly less than two fields. LINE DISPLAYS 1. Variable Line Selector. To obtain Variable Line Selector capabilities, the DLY'D TRIG control must be set to the RUNS AFTER DLY TIME position. Pull the TIME/DIV knob outward and rotate the knob to the desired time/div position (10 µs). Rotate the DELAY TIME MULT control to the desired portion of the waveform. Push the TIME/DIV knob in and the desired portion of the waveform will be displayed. The delayed sweep is free running in this mode of operation. 2. Discrete Line Selector. For Discrete Line Selector capability, place the Delayed Sweep Triggering SOURCE switch in TV LINE position. Rotate the DLY'D TRIG control out of the RUNS AFTER DLY TIME position and set the control to obtain a triggered sweep. Rotate the DELAY TIME MULT control until the desired line is displayed. When rotating the DELAY TIME MULT control, the display will jump from line to line. 3. Main Triggering Amplifier TV Line. Set the TIME/ DIV switch to 10 µs and check that the Main Triggering Amplifier SOURCE switch is set to TV LINE. Adjust the LEVEL control to obtain a stable display at the H rate. Obtaining a Display Install the TV Sync Separator Plug-In in the oscilloscope as described under Using the TV Sync Separator. The following instructions apply for the 7B53A/7B53AN OP­ TION 5 plug-in unit. DELAYED INTERNAL TRIGGER OPTION The Delayed Sweep Triggering SOURCE selection may be changed from TV LINE/EXT to INT/EXT or vice versa. For INT/EXT triggering source capability, move the coaxial connector from P903 to P904 and change the pushbutton to read INT/EXT. The pushbutton is stored on the TV Sync Separator board. 2