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Summary of Contents for AM 502

Page 1: ...y _ _ 1 __ _ r 7 t iry _ rs y _ _ t 1r Advanced Test Equipment Rentals www atecorp com 800 404 ATEC 2832 Established 1981...

Page 2: ...HECK FOR CHANGE INFORMA TION AT THE REAR OF THIS MANUAL THIS MANUAL REPRINTED MARCH 1978 TEKTRONIX AI 5 DIFFERENTIAL AlUIPL1FIER INSTRUCTION MANUAL Tektronix Inc P O Box 500 Beaverton Oregon 97077 Ser...

Page 3: ...he fastest possible service Please include the instrument type number or part number and serial number with all requests for parts or service Copyright 1973 1978 by Tektronix Inc All rights reserved C...

Page 4: ...xpose personnel to hazardous voltages These instructions are for qualified service personnel only SECTION 3 ADJUSTMENT 3 SECTION 4 MAINTENANCE AND INTERFACING INFORMATION 4 1 SECTION 5 CIRCUIT DESCRIP...

Page 5: ...AM 502 Differential Amplifier plug in module i REV B MAR 1978...

Page 6: ...ontrol increases the lower bandwidth frequency Use of the pre charging feature prevents surge currents due to charging the ac coupling capacitor from damaging the circuit under test REV C MAR 1978 Ove...

Page 7: ...use a FET probe or the short as practical high impedance input provision of the AM 502 Contact your Tektronix Representative for further information on When making single ended input measurements pro...

Page 8: ...Latch Pull to remove plug in 100 Pushbutton Divides GAIN switch setting by 100 Ground amplifier input Fig 1 2 AM 502 controls and connectors Operating Instructions AM 502 DC OFFSET COURSE and FINE Con...

Page 9: ...ResultantWaveforms show the difference between the two signals Step Gain DC Balance 1582 5 Output Connections If this control is misadjusted the do output level will Make output connections using a bn...

Page 10: ...er will then be the difference in voltage of the two selected points Consideration should be given to the proper connection method used between the AM 502 and the circuit under test otherwise improper...

Page 11: ...2 volt and result is the cmrr 100 000 to 1 It would of course be impossible to view the 1 millivolt signal superimposed on the 60 hertz signal by using single input methods Degradation of Common Mode...

Page 12: ...mrr will also depend upon the signal source impedance since various shunt capacitances between the source and the input gate must charge and discharge through that impedance Outside influences such as...

Page 13: ...ct Coupled AC Coupled Bandwidth HF 3dB Accuracy LF 3dB Accu racy REV B MAR 1978 Characteristics SPECIFICATION ELECTRICAL CHARACTERISTICS Performance Requirements 100 to 100 000 within 2 10 steps in 1...

Page 14: ...k sine wave input DC Offset Range At least and 1 V Maximum Safe Input Voltage Direct Coupled Normal Mode I I 15 V dc plus peak ac to 5 MHz or less 100 Mode I I 350 V dc plus peak ac to 5 MHz or less A...

Page 15: ...decreased by 1 C 1000 feet from 5000 to 15 000 feet To 50 000 feet Information 40 C to 75 C With the instrument complete and operating vibration freq uency swept from 10 to 55 to 10 Hz at 1 minute pe...

Page 16: ...and do not Tektronix Inc and can be ordered through your local include test equipment error Tektronix Field Office or representative Oscilloscope Description Power Module Calibration Gen erator Funct...

Page 17: ...ge 1 Check Amplifier Gain Gain Accuracy is within GAIN 100 2 CAL fully clockwise cal a Connect the calibration generator to the vertical HF 3dB 1 MHz amplifier input using a 50 ohm cable LF 3dB DC OFF...

Page 18: ...ect the 10X attenuator from the AM 502 input connector and connect it to the input connector Push in the input GND pushbutton and push and release the input GND pushbutton 3 Check Common Mode Rejectio...

Page 19: ...5 3 15 3 85 3 15 3 85 3 15 3 85 3 15 3 85 Specification and Performance Check AM 502 6 Check LF 3 dB Bandwidth Accuracy is 1 dB 2 d B a Check the settings of the LF 3 dB switch using Table 2 7 as refe...

Page 20: ...and COARSE until the OVER RANGE indicator light goes out f Adjust the calibration generator pulse amplitude control and observe two noise bands as shown in Fig 2 1 A remove one attenuator if necessary...

Page 21: ...OWING SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY TO AVOID PERSONAL INJURY DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED...

Page 22: ...procedure ensures that the instrument will meet the performance If other test equipment is substituted control settings requirements listed in the Specification section However or calibration setup m...

Page 23: ...z Waveforms sine and Signal generation square voltage ampl for cross neutral itude 10 V p p freq ization and high uency range 1 kHz to frequency cmrr check 50 kHz accuracy with in 3 Capable of supplyi...

Page 24: ...n the 15 V test point on the Main circuit board and chassis ground See Fig 3 1 for voltage test point location b Check for a meter reading of 14 25 to 15 75 volts c Disconnect the digital voltmeter 2...

Page 25: ...p Gain AC Bal R161 for minimum trace shift while switching the AM 502 GAIN switch between the 100 and 100K positions See Fig 3 1 for adjustment location d Return the AM 502 GAIN switch to the 100 posi...

Page 26: ...sing a 50 ohm cable 8 Adjust Input Gate Leakage Current Compensation d Set the calibration generator for a five division a Connect a 50 ohm termination to the AM 502 square wave display set the Deflec...

Page 27: ...10 kHz 2 mV 10 kHz 1 mV 4 9 5 1 4 9 5 1 4 9 5 1 4 9 5 1 4 9 5 1 4 9 5 1 4 9 5 1 4 9 5 1 4 9 5 1 4 9 5 1 11 Check 100 Amplifier Gain Accuracy Gain Accuracy is within 2 12 Adjust Input Cross Neutraliza...

Page 28: ...at is connected between the 50 ohm termination and the 50 ohm cable reconnect the 50 ohm cable to the termination c Readjust the calibration generator amplitude con trol to maintain a five division di...

Page 29: ...this step g Check the remaining settings of the HF 3dB switch using Table 3 4 as reference Change time base sweep rate as needed for lower frequencies 3 8 Table 3 4 HF 3 dB BANDWIDTH ACCURACY AM 502 F...

Page 30: ...uce the desired display until the noise bands just merge See Fig 3 2B g Decrease the calibration generator pulse amplitude 1582 22 h Remove three of the attenuators and connect the signal through the...

Page 31: ...esponding position of the or urethane foam between carton and instrument on all power module jack to prevent other than signal source sides Seal carton with shipping tape or industrial plug ins from b...

Page 32: ...ound 25B Pad for Signal I n 24B Pad for Signal 1 n G round 22B Pad For Signal In 21B NOTE These connections are not factory wired ASSIGNMENTS CONTACT FUNCTION 28A Signal Out Factory wired 27A Signal O...

Page 33: ...nput attenuator circuit The signals can be ac coupled do coupled or disconnected internally The and inputs are identical except for circuit numbers Except where The leakage associated with the gates o...

Page 34: ...of R431 R433 R435 1 5 and 1 6 were exactly matched In practice any two current sources plus a current setting transistor mismatch will cause a differential output Even with 0443 The positive current...

Page 35: ...0 8 mA R420 I I Common mode current from R435 Q451 Q121A B Sources R451 15 V To Q445 Q131A B R442 Collectors I 1 3 mA Q443 R443 _ _ _ __ R421 I ___ _ _ Q426 12 mA R422 4 mA 13 mA Negative pg22A 1 Q422...

Page 36: ...C122 connected in the input circuit is adjusted to divert the undesirable capacitive currentaway from the input point minimizing the unbalance Capacitor C222 performs the same function forsignals appl...

Page 37: ...ation for the lower three positions as they are for the three higher positions R121 0131A R136 0121A 0136 SmA INPUT 6 mA 0 25 V 0 25 V Circuit Description AM 502 R126 R226 R225 8 mA 0121B 0236 OV INPU...

Page 38: ...171 A and B so theirsource voltages will be equal With Power Supplies 4O the source levels equal rotating the front panel VAR control causes no shift of the do output level Regulation of the 15 volt a...

Page 39: ...No options are available at this time...

Page 40: ...you concerning any change in part number Change information if any is located at the rear of this manual SPECIAL NOTES AND SYMBOLS X000 Part first added at this serial number OOX Part removed after th...

Page 41: ...LES CA 93446 15454 RODAN INDUSTRIES INC 2905 BLUE STAR ST ANAHEIM CA 92806 56289 SPRAGUE ELECTRIC CO NORTH ADAMS MA 01247 71400 BUSSMAN MEG DIVISION OF MCGRAW EDISON CO 2536 W UNIVERSITY ST ST LOUIS M...

Page 42: ...2982 374 OOICOH0479D C195 281 0518 00 CAP FXD CER DI 47PF 9 4PF 500V 72982 301 OOOU2J0470M C207 283 0005 00 CAP FXD CER DI O OlUF 100 0 250V 72982 8131N300ZSU0103P C222 281 0093 00 BO10100 B039999 CAP...

Page 43: ...DEVICE SILICON 35V 100MA 80009 152 0323 00 CR231 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR250 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR281 152 0141 02 SEMICOND...

Page 44: ...9 153 0587 00 Q426 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 Q431 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 Q443 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 Q445 151 022...

Page 45: ...100 OHM 20 0 50W 73138 91A 100ROM 8159 311 1566 00 B040000 RES VAR NONWIR 200 OHM 20 O SOW 73138 91A R200 8160 315 0102 00 RES FXD CMPSN IK OHM 5 0 25W 01121 CB1025 8161 311 1564 00 RES VAR NONWIR 50...

Page 46: ...M 332 OHM 1 0 125W 91637 MEF1816G332ROF R284 321 0314 00 RES FXD FILM 18 2K OHM 1 0 125W 91637 MEF1816G18201F 8285 321 0236 00 RES FXD FILM 2 8K OHM 1 0 125W 91637 MEF1816G28000F R410 321 0068 00 RES...

Page 47: ...R511 315 0104 00 RES FXD CMPSN l00K OHM 5 0 25W 01121 CB1045 R513 315 0104 00 RES FXD CMPSN l00K OHM 5 0 25W 01121 CB1045 8521 316 0276 00 RES FXD CMPSN 27M OHM lOB 0 25W 01121 CB2761 8523 321 0423 0...

Page 48: ...MPSN 560 OHM 5 0 25W 01121 CB5615 R990 315 0102 00 RES FXD CMPSN IK OHM 5 0 25W 01121 CB1025 8994 321 0306 00 RES FXD FILP1 15K OHM 1 0 125W 91637 MFF1816G15001F R995 321 0306 00 RES FXD FILM I5K OHM...

Page 49: ...hat the signal performs its intended function when it goes to the low state A Assembly separable or repairable H Heat dissipating device heat sink S Switch or contactor circuit board etc heat radiator...

Page 50: ...I I 530 100 cuT NORM FLOATI NQ POWER SUPPLY Q410 Q f Q41 Q4 F5 Q422 Q45 Q42 Qf31 PREAMP Q121 QI31 GL13 Q152 423 Digitally signed by http www aa4df com 19BZ 14 R BV B MAR 1978...

Page 51: ...TAGE Q171 QI81 Q185 Q195 4191e Q281 Q2 9 st a5 i IS VOLTS t5 VOLTS IS VOLTS OVER RANyE DETECTOR Q501 Q532 Q511 61941 G1521 Q540 DC SUPPLY REyU Lp TORS Gt910 c 99o Q940 U9I0 Q942 0990 D5 0 OVER IZANG E...

Page 52: ...14 R131 13 R136 G4 R137 G4 R141 J6 R145 J5 R146 H6 R152 G3 R154 H3 R155 G4 R157 F1 R159 G5 R160 D3 R161 D3 R162 D3 R164 E3 R166 E3 R168 D4 R170 F2 R171 E2 R173 E2 R175 D2 R176 D3 R177 D2 R178 E3 R181...

Page 53: ...15 Q131 121 220 8431 R451 R441 X440 C 43 S0 Q236 _ C450 _ R250 R231 T n Gi R1 G 431 C431 61416 _ _ 1 I W I R255 6231 __ 8226 R 14 R422 J _ I W A1 Main Circuit Board A side C207V _ R438 VR 8 W R106 CR...

Page 54: ...y Wi r y w y r m _ vim wr Ir r rrrrrrr a Wil _ i _ yr Wr v i _ y y r pr I v _ _ __ wiry vi r r i i yr wr yr v n a o v W r C vi vi r si vim Wi Wi Wis LIL9 il e ta r _ _ I 7 I I I _ r I 4I r YCYk r I V...

Page 55: ...diagrams are not absolute and may vary between instruments because of component tolerances internal calibration or front panel settings Readouts are simulated in larger than normal type Dangerous pot...

Page 56: ...I I C39 I I tnrreN e z INPUT CAP I I I g3g 990K ROK 100 m ccMR0 ROOK I R20 I o J 1 L o IM G48 R5o I 10 4 100 5M I C50 CPLI La 13 rorISV UCPLI pf pLl I INPUT COMP TISV I I NORMAL Y Y P40 R410 I L _ I...

Page 57: ...5 S BA LIN ISV DCPLI 132 HF CMRR CI50 1 3 5 4 SEE PARTS LIST FOR EARLIER VALUES AND SERIAL NUMBER RANGES OF PARTS OUTLINED OR DEPICTED IN GREY IUPUT ca oss NEUTRAL IZAT I O N Q951 8450 R435 2 2K DCPL...

Page 58: ...centered COURSE FINE COURSE FINE aGround reference center horizontal graticule line The waveforms shown were taken with a 50 mV square wave input signal applied to the input connector of the AM 502 V...

Page 59: ...I67 Q168 Q181 Q185 Q195 Q196 Q267 Q268 Q269 Q281 Q285 GOLL p152B 57EP gAlAl CDGPL 2 DCPL 2 AG 6AL 15V 15V R168 2 10 K AM 502 R 164 16 2 K 0 23 5001 RI62 3 09K _ Q168 R160 C164 K QI64A T loo QI67 R260...

Page 60: ...99K 220K IyF_ RANGE 5 97K Q 521 DCPL3 I CRISO CR250 9 9 I I 3 332 I 2 M ROOK CR181 R541 Q540 ISV 680 R184 12 IK R504 s9 sK oV 2 49 K R542 R507 O 02 47K R501 Qc pl C0530 2 2M Q571A coo CR570 7 9 Q 558...

Page 61: ...2 4 10 DC OFFSET i IV 540K FINE R 6 R464 I 1 IR 5M 74K 19K 8 I 1 30K ti467 COARSE COARSE _15 S7EP GAIN DG PL I DC BAL R160 i cw 0 3 M Hz O I __ _ 30 10 3 KHz I 0 3 O I ccw caio lct IZ I 1000 I F O 1...

Page 62: ...I I i I R4B9 R488 R487 R486 R485 R484 R483 R982 R481 R480 I 10 20 I 50 I 100 1 2001 500 1 IK I 2K i 5K 1 IOK I I I I 1 EnntrrER s I I i I I I I I I I 42x6 I I 1 I I I I I I I I I I I I I I I I I I I...

Page 63: ...SEE FARTS LIST FOR EARLIER VALUES AND SERIAL NUMBER RANGES OP FARTS OUTLINED OR DEPICTED IN GREY 15V 3 R945 9 i k R946 6 2 K...

Page 64: ...R946 5 VOL75 6 2K O I R994 ISK 1562 21 REV a MAR 19 78 C 960 15 yF R 970 3 9 a Q 990 IOA U990 z TT 6 4 R990 3 IK Il8 R989 560 IS VOLTS R926 10 R9 y24 DCPLI 10 IS VOLTS R922 C 0 924 DCPL 2 10 15 VOLTS...

Page 65: ...on are referenced by figure and index numbers to the illustrations In the Parts List an Item Name is separated from the description by a colon Because of space limitations an Item Name may sometimes a...

Page 66: ...RY CT 06720 71785 TRW CTNCH CONNECTORS 1501 MORSE AVENUE ELK GROVE VILLAGE IL 60007 73743 FISCHER SPECIAL MFG CO 446 MORGAN ST CINCINNATI OH 45206 73803 TEXAS INSTRUMENTS ZNC METALLURGICAL MATERIALS D...

Page 67: ...366 1690 00 14 129 0103 00 1 POST BDG ELEC ASSEMBLY 80009 129 0103 00 ATTACHING PARTS 15 210 0455 00 1 NUT PLAIN HEX 0 25 28 X 0 375 INCH BRASS 73743 3089 402 16 210 0223 00 1 TERMINAL LUG 0 25 INCH D...

Page 68: ...ID X 0 313 OD TEFLON 02107 OBD 55 131 0604 00 36 CONTACT ELEC CKT CD SW SPR 80009 131 0604 00 56 136 0252 04 8010100 8030294 72 SOCKET PIN TERM 0 188 INCH LONG 22526 75060 136 0252 04 8030295 56 SOCKE...

Page 69: ...TUATOR ASSY INCLUDES 96 200 1596 00 1 COVER CAM SW 10 ELEMENT 0 83 INCH DIA 80009 200 1596 00 ATTACHING PARTS 97 211 0008 00 4 SCREW MACHINE 4 40 X 0 25 INCH PNH STL 83385 OBD 98 210 0004 00 4 WASHER...

Page 70: ...REV B MAR 1978 24 3a __ Q 4 31 F I 16 22 o r 11 12 Qom _ 1 3 a 10 j a 4 o 29 36 6 31 14 U a 13 __ s c i 1 v 33...

Page 71: ...AM 502 T_ J m K r O v m O...

Page 72: ...ex Tektronix Serial Model No Mfr No Part No Eff Dscont Qty 1 2 3 4 5 Name Description Code Mfr Part Nu mber 070 1582 O1 1 MAN JAL TECH INSTRUCTION 80009 070 1582 O1 STANDARD ACCESSORIES REV C MAR 1978...

Page 73: ...Since the change information sheets are carried in the manual until all changes are permanently entered some duplication may occur If no such change pages appear following this page your manual is cor...

Page 74: ...ns Sine wave available at 5 2 and 1 ns 184 TG 501 Marker outputs 5 sec to 1 ns Sine wave available at 5 2 and 1 ns Trigger output slaved to marker output from 5 sec through 100 ns One time mark can be...

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