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Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
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COMMITTED TO EXCELLENCE 7A22 DIFFERENTIAL AMPLIFIER INSTRUCTION MANUAL Tektronix, Inc. P.O. Box Beaverton, Oregon 97077 First Pri n ti n g JUL 1969 070-0931-00 Product Group 42 Revi sed SEP 1986...
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Contents of this publication may not 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 registered trademarks of Tektronix, Inc. TELEQUIPMENT is a registered trademark of Tektronix U.K.
7A22 Type SECTION 1 SPECIFICATION Change information, if any, affecting this section will be found at the rear of the manual. Introduction OFFSET COARSE Range from The Type 7A'n Vertical Plug-in is a DC coupled differ Electrical Zero ential amplifier with excellent common-mode rejection chor...
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7 A22 Specification-Type ;;:: ·i::: > .."' "'o "'o 1-2. signofs Fig. CMRR Frequency f o r not exceeding Common Mode Signol Ronge.
Specification-Type 7 A22 DC D ELECTRICAL CHARACTERISTICS (cont) Ori� with Time (Ambi ent T emperoture and Characteristic Performance Requirements line Voltage Constant) Maximum Input Voltage Short Term V (P-P) or 0.1 div (whichever (each input) µ. is greater) any minute after 1 DC (Direct) Coupled, hour wormup DC + Peak AC, AC...
POSITION. Will cause nal is amplified. the trace, representing the output of the Type 7A22, to move o small amount When the 'DC' button is depressed the when pressed. Aids in identifying the signal is coupled directly lo the Input...
BAL is attempted. Insure that the oscilloscope used and automatic triggering. in conjunction with the Type 7 A22 is correctly cali Wail about five minutes for the Type 7A22 and the brated ( refer to the oscilloscope manual) and that oscilloscope to worm up.
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Fig. l-2. location of AC ATIEN BAL control. CRT trace to the center of the raticule. When transferring the Type 7A22 from one oscilloscope Set the VOLTS/DIV switch to to another, it may be necessary to perform o minor 10µ.V.
When measuring DC voltages, use the largest deflection test and the Type 7A22. The shield of a coaxial cable is factor (10 V /DIV) when first connecting the Type 7 A22 to normally used for this purpose.
6 dB per octave rate. Refer concern. to Fig. 2-6. NOTE Varying the bandwidth of the Type 7A22 is useful, for eic ample, when displaying a low-frequency signal. By reducing R 111 R211 When the wire straps are removed, 1he high-frequency response the noise con, in many coses, be are disconnected.
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7A22 Operating Instructions-Type . § � <I) �� a: � �� ""o "o ... "'o CMRR 2-4A. 7A22 CMRR at µV/Div lo mV/Div. Inputs DC Coupled. Worst-case degradation due lo source resistance. Fig.
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Bandwidth and VOL TS/DIV EtTor as functions of Source Resistance. 100% �· 100k )> "' !" .." "' Input < error (%1 High Impedance Input Input Bandwidth ,..HF -3 dB POINT at 1 MHi No external C <...
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7 A22 Operating Instructions-Type ..¥ "" .."" > ..0 IQ 100 kHz rel. fig. as a MHxl. 2-S. 7A22 FREQUENCY RESPONSE function of LF - 3 dB POINT SETTING - 3 dB POINT at 1...
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Operating Instructions-Type 7 .:.t .:.t .:.t � 10 Hz Fig. os o function of HF settings of DCI. 2-6. 7A'22 FREQUENCY RESPONSE -3 dB POINT -3 dB POINT...
Type 7A22. Set the VOLTS/DIV switch and VARI level signals are involved. Electrostatic interference con be ABLE control throughout the subsequent comparisons. The...
DC Offset Operation Set the Type 7A22 controls as follows: By using the DC OFFSET controls, it is possible to use the Type 7A22 differentiolly in a slide-back made, to observe VOLTS/DIV smoll signal whose DC potentiol difference may be consider...
As o re· suit, amplitude measurements mode under such conditions will not be occurote. The Type 7A22 INPUT OVERDRIVE indica tor provides on indication thot such o signol is present by lighting before the goin cofibrotion changes by 1 %.
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(P6009, Tektronix Part No. 01 0·0264-01). When used in instead larger division ratio l l OV /div show 1 of 1 KV. setting, reoding will 2-13 AUG.
Type 7A22 SECTION 3 CIRCUIT DESCRIPTION Change information, if any, affecting this section will be found at the rear of the manual. Introduction Preamp A block diagram description covering the general con From the input attenuators, the signal is coupled to the...
Circuit Description - Type 7 A22 Output Amplifier High Frequency -3 dB Point The H F dB POINT selector switches capacitance across The signal from the LF dB POINT selector is coupled the oulput of the Goin Switching Amplifier to set the high to the gain-switching section of the Ouput Amplifier.
A and B (See Schematic 2 ) for switch positions 1 0 µ.V Zero 1 0 mV. For switch positions above 10 mV, input attenuators R215 ore switched by Sl08 into the input circuit of the Type 7A22, in conjunction with the gain switching resistors, R407, Thermistors produce the selected deflection factors.
2 mA There are two different kinds of overdrive associated with and 5 mA respectively. the Type 7A22, (a) single-ended overdrive, with one inpuf grounded, and (b) common-mode overdrive, with approxi Generator.
Descripti o n-Type 7 A22 Circuit +0.25 v 5 mA •o -+-Input 6 mA • - - � - - 1 mA Gen�ator � - - - - Offset Offset zs o n 250il 8 mA Generator 5 mA S mA -INPUT Fig.
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7A22 Circuit Description - Type Voltage-to-curwent converter , - - - A B - - - , • � - -- -- V tb i offset ,,,,.,..-' ..I ...- -.F- -- -- -� • R289 R287 _ _ _ _ .,...
Circuit Description-Type 7A22 R159 The HF dB POINT se HF -3 dB POINT Selector. lector simply switches different values of capacitance across the output of the gain-switched stage to set the high fre quency -3 dB point of the amplifier. The -3 dB point is R157 adjusted in the 1 MHz position by C425.
Q614 lo ollow lOOX 200 it.A of collector current which will increase the deflection These two actions aid in identifying the Type 7A22 trace factor (in the readout display) by a factor of 100. when multiple traces ore displayed. When the IDENTIFY button is released, the readout is restored to its previous This means that the Indicator Oscilloscope displayed read...
Introduction Visual Inspection Information which will aid in keeping the Type 7A22 op The unit should be inspected occasionally for such defects erating at its peak performance is contained in this section. as poor connections, broken or damaged circuit boards, im...
Be careful not to remove in Parts. All electrical and mechanical port re Standard formation printed on the board. placements for the Type 7A22 con be obtained through your local Tektronix Field Office or representative. However, many of the standard electronic components con be ob...
7 A22 Maintenance--Type Remove the two screws securing the AC-GND-DC CAUTION switch to the front sub-panel and remove the switch. Silk-screen lettering dissolves when contacted b y k. Replace by reversing the above procedure. flux-remover. When soldering metal terminals (inter Metal Terminals.
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Remove the 4 screws (from the rear side of the board) For assistance in maintenance of the cam-type which hold the rear com assembly to the circuit board. switches, contact your focal Tektronix Field Office or representative. 7. Remove the rear com assembly.
Visual Inspection In physically examining the Type 7A22, toke special note of the area indicated by evaluation of symptoms. Look for TROUBLESHOOTING loose or broken connections, improperly seated transistors and burned or otherwise damaged parts.
A properly operating oscilloscope will hove its trace cen Use only substitute components that ore known to be good. tered vertically on the CRT only when the Type 7A22 has a balanced output. The Type 7A22 is a balanced amplifier...
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Maintenanc&-Type 7A22 lector - emitter voltage will vary with the circuit and circuit TABLE 4-2 conditions but it should always exceed The best way of Transistor Resistance Checks checking these devices is by connecting a voltmeter across the junction, using a sensitive voltmeter setting (see Fig. 4-2).
Some diodes used in the Type 7A22 ore color coded to identify the diode The cathode end of each gloss type. encosed diode is indicated by a stripe, a series of stripes...
If metal film resis If the Tektronix instrument to be shipped to a Tektronix tor hos a value indicated by three significant figures and a Service Center for service or repair, attach a tag showing: multiplier, it will be color coded according to the EIA stand...
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Maintenance-Type 7A22 ..,,,. REV NOV 1982 F og • 8 Matn c:.rcu11 boatd (companen1s) 4-1 0...
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-· ' Al(' bill 421 •AM' blc y 4-11 .. cin wflt clrwlt Fig. 4--7. Main boord (wire ccilcir ccidel. Maintenance-type 7 A22...
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Maintenance- Type 7A22 AO red on wht ·o· vio on blk ·AP' orn on red ·AN orn on red Fig. 4·8. JUN 1984 4- 1 2 Bandwidth circuit board (components and wire color code).
Complete information for performing a Performance Check or 1 kHz square wave and fast-rise, high amplitude signal of 100 ns Calibration of the 7A22 is contained in this section of the manual. or less. Tektronix PG 506 Calibration Generator recommended.•...
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Performance Check/Callbratlon-7 A22 12. Check or Adjust C141-Cross Neutralization 19. Female to dual banana adapter, BNC. Tektronix Part Number 103-0090-00. With signal connected to INPUT, switch the +INPUT AC-GND-DC from GND to DC; aberration should not exceed t 1 %.
1. If the 7 A22 Is to be calibrated, insert the plug-in extender Into the oscilloscope and plug the 7A22intothe plug-in extender. General If this procedure is a Performance Check only. insert the 7A22 plug-in The followi ng procedure Is arranged in a sequence which into the oscilloscope compartment.
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• • • • • • • • • • • • • • • • • • • • • • • • • • Fig. of the 7A22 showing adju1tment locatlon1. 5-1. Lett aide REV B. MAR 1979...
Performance Check/Callbratlon-7 A22 LOW FREQ AC-GND-DC (+INPUT) POINT AC-GND-DC ( INPUT) AC-GND-DC ( � I N PUT) STEP ATTEN DC BAL Adjust for proper DC bal AC-GND-DC ( -INPUT) ance. STEP A TTEN DC BAL Adjust for proper de bal ance (see Operating Sec...
2 mV 1.2% c. Connect a female to dual banana adapter and a coaxial 1 mV 5 mV ±2% + INPUT cable from the DC Power Supply output to the 7A22 10 mV ±2% 2 mV connector. 5 mV 20 mV J.:2%...
Connect a coaxial cable from the tee connector to the dual input connector. Connect a coaxial cable from the connector to the Ext In connector on the oscilloscope. Set the 7A22 controls as follows: VOLTS/DIV 50 mV AC-GND-DC (+INPUT) AC-GND-DC (-INPUT) 5-3.
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Performance Check/Callbratlon-7 A22 11. Check or Adjust C241 +Cross Neutralization a. Set the Standard Amplitude Calibrator for a 50 mV square wave output and connect to the 7A22 +INPUT connector. NOTE The 7A22 POSITION control and the Time Base horizontal positioning control may not always be mentioned.
Set the Standard Amplitude Calibrator for 0.2 V peak-to C109A peak output. Chee� x 100 i. Disconnect the dual input connector from the 7 A22. Check 50 mV C 108A Set the 7A22 Controls: 20 mV Check VOL TS/DIV 50 mV Check VARIABLE CAL IN ·...
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Set the oscilloscope Triggering Source switch to Ext. c. Set the Standard Amplitude Calibrator output lor 50 V of Check or high amplitude signal. Cell brat or VOLTS/DIV Adjust for Set the 7A22 controls follows : Output Switch Min. Spike -Input...
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• • • • ••• • • • • • • • • • • a. Set the 7A22 +INPUT AC-GND-DC switch to DC and use the oscilloscope controls as necessary for easy viewing of display. Connect a coaxial cable and a 50-ohm terminator...
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7 A22 Controls d. Switch the (+INPUT) to G 7A22 AC-GND-DC VOLTS/DIV 1 mV e. Switch the 7A22 VOL TS/DIV to .1 mV. VARIABLE CAL I N Simultaneously switch the 7A22 -AC-GND-DC POSITION Midrange switches to DC.
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Connect a female to dual banana adapter and a coaxial Fig. 5-7). cable between the DC Power Supply and the 7A22 + I NPUT. the 7 A22 VOL TS/DIV switch to 1 mV and the Time Base Time/Div switch to 1 ms.
Source Mode Auto 26. Check Overdrive Recovery Time a. Connect the Reed Pulse Generator Output to the 7A22 l lN PUT. b. Connect the Reed Pulse Generator power cable to the oscilloscope probe power connector (rear panel). c. Switch the Reed Pulse Generator Polarity switch to +.
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6-7 A22 REPLACEABLE ELECTR I CAL PARTS PARTS ORDERING INFORMATION Replacement parts are available from or through your ocal Tektronix, Inc. Field Office or represen:ative Changes to Tektronh1 Instruments are somehmes made lo accommodate improved components as they become available. and to give you the benefit of the latest circuit improvements developed 1n our engineering department It is therefore important.
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- 7"2.2 Replaceable Electrical Parts CROSS INDEX - MFR. CODE NUMBER TO MANUFACTURER Mfr . �=-"e'--- - Address 00213 NYTRDNICS COMPONEMTS GROUP INC ORANGE ST DARLINHON SC 29532 SUBSIDIARY OF NYTRONICS INC 00853 SANGIU40 KESTON INC SllNGllMO RD PICKENS SC 29671 SANGAMO CAPACITOR DIV P 0 BOX 1291 1201 SOUTH 2ND ST...
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7A22 Replar.aablA Electrical Parts Mfr. Serial Assembly No. Tektronix & Code Part N .Q..Effective Name Descd.P.tion 670-1013-00 670-1013-00 CIRCUIT BO ASSY:BAHD"IOTH 80009 670-1014-00 670-1014-00 B010100 B029999 ClRCUIT BO ASSY:MAIN 80009 670-1014-01 C'IRCUIT BO ASSY:MAIN 80009 670-1014-01 B030000 B059999...
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Replaceable Electrical Parts 7"22. Assembly Mfr. Tektronix Serial/ & Mfr. Part No, Part NQ, Name Code C620 59821 200 U 60E223 Z 283-00SO -O O C�P,FXD,CER Dl:0.0221JF,+90-20'X,25V 59821 200U60 E 223Z C�P,FXD,CER Dl :0.0221JF,+60-20'X,2SV C630 283-00SO - -OO 14433 MG1518 152-0323-00 SEMICOtll DVC,Dl:5",Sl,35V,0.1Q,00-7...
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D I AG RAMS AN D C I R C U IT B O A R D I LL U ST RATI O N S Sy m bols and Reference Designators Electrical components shown on the d i agrams are i n the fol l ow i ng u n i ts u n l ess noted otherwise : Capacitors = Val ues one or greater are in picofarads ( p F ) .
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1··- -1 ,.RIGGER ----< FLG\\,.IWIO OU,.PUT POWER SUPPLY MPLIFIE.R ------L < 4s• qss• Q 304 Q31 4 I N PU ,. ':>E.LIOC. TO'R.$ S W I T C H l D VAR B .. L · 6. A I W SIGl.!AL ,_ ;...
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- I SV -t ISV . 00 1 1 "" ':> / 0 I V v/ 'D\ V ..R42( c.:,, -... v / 0 1 v - -- 1 "°" 'i> / O IV - �-- I m '=' ID v/'Dl v ..
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F" R O M F 1 1 9 5 5 3 5 F' A O M R 4 O S � W I TH F" 2 1 9 P I N I C O N C S H O W N I N C A L P O S I 5 3 5 ·...
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P I N @&� R 3 !5 3 B R 3 5 3 A R 3 5 ·3 p R 3 5 3 E 1 7 4 K 1 4 K 1 74 K 1 4 K .. . ', C 4 2 0 E .
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L A MP G N D + 5V LAMPS -\ 5 ..: - -- ---- ·--- ..-· -·· -· ·---·--·-···-··-·------·-·-- - --· -- - J - --�---·- ·-- ·- ---- - -- ··-··--·-··- ·--····-···-··---------···------------ ---·-··--·--·---- - '5 0V •· ·-·...
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Following is an example of the indentation system Tektronix. Inc. Field Office or representative. used in the description column Changes to Tektronix instruments are sometimes made to 2 3 4 5 & Name Descripllon accommodate Improved components as they become available.
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7A2.2. Replaceable Mechanic.I Parts CROSS INDEX - MFR. CODE NUMBER TO MANUFACTURER Mfr. !\MP INC 00779 P o eox 3608 HARRIS8\JRG PQ 17105 06915 RICHCO PLASTIC CO 5825 N TRIPP AVE CHICll60 IL 60646 06950 VSI CORP 13001 E TEMPLE AVE CITY OF llllU S TRY CA 91746 SCREMCORP DIVISION CLEVELAtll OH 44125...
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7A22 DIFFERENTIAL A MPLIFIER REV 0, FEB 1979...
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7A22 DIFFERENTIAL A MPLIFIEA REV D. FEB 1979...
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Mll S HER,LOCK:0.521 ID, INT,0.025 THK,SST 24931 ORDER BY OESCR 22D-0497-00 NUT ,Pl.AIN,HEX:O.S-28 X 0.562 HEX,BRS CO PL 80009 220-D497-00 (END ATTACHING PARTS) -� 366-1058-07 IOOl : GRAY,7A22 80009 366-1058-07 (ATTACHlNG PARTS) 214-1095-00 22599 PIM,SPRING:0.187 l X 0.094 00,STL,CD PL 52-022-094-0187 (Bl> ATTACHING PARTS)
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7 A22 Replaceable Mechanical Parts Ftg. & Mfr. Index Tektronix Serial/ Assembly No. Effect iv ! Part No 105-0076-<14 105-0076-04 B1223BO RELEASE BAR,LCH:PLUG-IN IMIT 80009 SPRllli ,HLCPS:0.14 OD X 1 .126 L,TMIST LOOP 80009 214-1280-00 214-1290-00 348-0157-00 SHLD GSICT,ELEIC:C-SHAPED ,4.8& L...
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7A2.2 Repla�ble Mechanical Parts F�. & Index Mfr. Tektronix Serial/ Aaaembly No. & Part No, 123 45 Mfr. P• !:l No, 1- 79 361-D326-00 SPOCER,SLEEVE:D.1 L D.18 ID,DL 80009 361-0326-00 (E>I> ATTACHING PARTS) 8069999 80009 337-1145-00 801D100 SHIELD,ELEC:LEFT SIDE 337-1145-0D...
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Replaceable Mechanical Parts 7A22 Fig. & Mtr. Index Tektronix Serial/ Assembly N o . Name & Oescri � tion Code Part No. Part No, Effective 12345 EXTENSlON SHAFT:5.594 L X 0.125 STEP OD 80009 384-0255-00 384-0255-00 EXTENSION SHAFT:9.5 L X 0.125 STEP OD,STL...
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Replaceable Mechanical Parts 7/42.2. Fig. & Mfr. Index Tektronix Serial/ Assembly No. & Part No. Oscont Code {ENO ATTACHING PARTS) • • COM SM: I.OM �El) 80009 105-0112-00 105-0112-00 ACTUATOR . • 74445 ORDER BY DESCR 213-0075-00 . . SETSCREM:4-40 X 0.094,STL .
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Replaceable Mechanical Parts - 7A2.2 & Fig. Index Tektronix Serial/ Aasembly No. Mfr. Name §i Q!�ri'1li20 .(DI> ATTACHil«i PARTS) 80009 131-()6()4-00 131-0604-00 .CONTACT,ELEC:CKT BO SM,S�.cu BE 22526 48283-{)36 131--0608-00 . TERMINAL,PIN:0.365 L 0.025 BRZ GLD PL 214-1190-00 800 0 9 214-1190-00 .CPLG,SHAFT,RGO:D.125...
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MANUAL CHANGE INFORMATION At Tektronix, we continually strive to keep up with latest electronic developments by adding circuit and component improvements to our instruments as soon as they are developed and tested. Sometimes, due to printing and shipping requirements, we can't get these changes immediately into printed manuals.
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Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
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