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Tektronix SC 504 User's Manual

1. 15 C to 35 3 0 C to 50 C 6 Negative going step 15 to 35 5 0 C to 50 8 CH1 CH 2 mode I 15 to 35 5 0 C to 50 8 CH 1 CH 2 mode 15 C to 35 8 0 C to 50 C 11 After 300 ns 5 mV div to 2 V div 2 5 V div and 10 V div 3 2 2 Specification and Performance 5 504 Table 2 1 cont Characteristics Performance Requirements Supplemental Information eh ia NT Position effect 15 C to 35 Typically 5 or less change in aberrations as a 5 division step is vertically positioned over the graticule area 2 invert trace shift Less than 2 div when switching from CH2 to CH1 CH2 Signal isolation Display related Input related a Between front panel inputs At least 50 1 up to 20 MHz At least 80 dB up to 10 MHz b Between rear inter face inputs At least 40 dB up to 20 MHz c From front panel input to rear interface input each channel At least 40 dB up to 20 MHz d From rear interface input to front panel input each channel At least 80 dB up to 40 MHz Position Range At least 6 divisions Signal delay between channels lt 1 ns Delay line Dual trace modes Permits viewing leading edge of displayed waveform Rate Chop At least 250 kHz Duty cycle Approxi
2. 5 3276 r RESET e E 1 59 sr FROM 535 2 ext care 03205 we TAS ROE mon ex From FROM 83294 BLANKING RAMP CONTROL CURRENT pias a f 0 xy move alle TO RS gt gt sweer ame ll 3 55 03158 GATE OUT pw 339 ovr 1 4 mes 1K Tose Gare 23155 Foxe wo ET Reo uant READY Pe P22o 3 4 Sun GATE _ al P3350 ALT DRIVE Q3361 Fi Q3368 Xo 8 Hay e 5 me Ting e 8 Q REV A FEB 1919 Passo 43350 6504 2296 36 xy Le From SWEEP GATING S CINE ERD SWEEP RAMP Table 8 6 INDEX COMPONENT LOCATIONS SCHEMATIC CKT GRID GRID GRID GRID Loc NO LOC NO LOC NO LOC H4 CR1242 E2 R1140 R1233 D5 1141 cT CR1246 F3 R1148 04 91234 E2 1142 C7 1247 D2 R1149 81235 4 1150 H4 R1150 C6 1240 1151 C7 81152 C5 91241 E4
3. asv mR MEK Pceizse x 96 91255 DIAG O B l c D Boat hes d LJ K NOUTS DV sis258 SHOWN IN POSITION Tov 5 e ciao EY 2 OT s 0047 Si325A EX 1 325 2 ej SHOWN IN AC POSITION ej F 200 2 2K I 20 7 je Oma Sev ow 432 425 RIGS hae mao 0 0 i2 rick Jereo 1 RIJS SC504 i rop 1 iy pios yu tar W visio E Pazo S CHAN SWITCHING MULTIVIBRATOR R249768 21 POSITION Paine LO too ssl xy DIAS gt CHOPPER c1as7 DIAG REN CRAS 5 nee Sus Q gt NS D D D ZEK 1 52375 DISPLAY cue SHOWN e PARTIAL AZ FOCUS INTENSITY BOARD REV A FES 1919 2292 19 CHANNE
4. amp Description Code Part Number R3382 315 0181 00 RES FXD CMPSN 180 OHM 51 0 25W 01121 1815 R3386 315 0103 00 R FXD CMPSN 10K OHM 51 0 25W 01121 1035 R3388 321 0241 00 RES PXD FILM 3 16K OHM 19 0 125W 91637 MFF1816G31600F R3460 321 0306 01 RES FXD FILM 15K OHM 0 5 0 125W 91637 MFF1816G15001D R3461 321 0236 00 RES FXD FILM 2 8K OHM 1 0 125W 91637 MFF1816G28000F R3462 321 0263 00 RES FXD PILM 5 36K OHM 19 0 125W 91637 MFF1816G53600F R3463 321 0306 01 RES PXD FILM 15K OHM 0 5 0 125W 91637 MFF1816G15001D R3464 315 0562 00 RES FXD CMPSN 5 6K OHM 5 0 25W 01121 5625 R3466 311 1224 00 RES VAR NONWIR 500 20 0 50 32997 3386F TO4 501 R3469 315 0432 00 RES PXD CMPSN 4 3K OHM 51 0 25W 01121 4325 R3470 315 0100 00 RES PXD CMPSN 10 5 0 25 01121 CB1005 R3472 315 0392 00 RES FXD CMPSN 3 9K OHM 5 0 25W 01121 3925 83474 315 0102 00 RES PXD CMPSN 1K OHM 5 0 25W 01121 1025 R3475 315 0102 00 RES FXD CMPSN 1K OHM 5 0 25W 01121 1025 R3476 315 0103 00 RES PXD CMPSN 10K OHM 51 0 25W 01121 1035 R3477 315 0222 00 RES PXD CMPSN 2 2K OHM 5 0 25W 01121 2225 R3479 315 0101 00 RES PXD CMPSN 100 OHM 5 0 25W 01121 1015 R3480 315 0562 00 RES FXD CMPSN 5 6K OHM 5 0 25W 01121 CB5625 R3482 315 0270 00 RES FXD CMPSN 27 OHM 5 0 25W 01121 2705 R3484 315 0103 00 RES FXD CMPSN 10K OHM 51 0 25W 01121 CB1035 R3485 315 0621 00 RES FXD CMPSN 620 5 0 25
5. 1 2 General Operating Information 22 ise px IE ups s 1 5 Intensity ONON 5 545 nec Sai eR ke Cs UR 1 5 Display FOCUS ocn eese vues 1 5 Sista eem Sy in tt acum Qa p wd ame 1 5 Displays gt sume xara 1 5 Deflection Factor sa 23 2 dus oxi sis sa p den Pars 1 6 onc Sus eis Sua wx ness EXE 1 6 Input Gouplihg s sce tos HES OES 1 6 SOUICO edere ACE ees 1 7 u cage Rite chads term hh eere 1 7 Stone 1 7 Trigger Level aa 1 7 22204 eua ete aye eg 1 7 Horizontal Sweep Rates 1 8 Sweep Magnification 1 8 HY Operslion 5452525 poteet denda 1 8 SPECIFICATION AND PERFORMANCE CHECK Specification aa wer 21 Check 15 255 esa ovs Qu des eas 2 9 SC 504 SC 504 TABLE CONTENTS cont THE FOLLOWING SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY TO AVOID PERSONAL INJURY DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED INOPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO
6. DI 0 01UF 10 100V 72982 8005H9AADWSRIO3K 3282 290 0512 00 PXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 3290 283 0003 00 CAP FXD CER DI 0 01UF 80 20 150V 72982 855 558250 1032 3322 281 0601 00 CAP PXD CER DI 7 5PF 500V 72982 301 000 0 07590 3330 281 0773 00 DI 0 01UF 10 100V 72982 8005H9AADW5R103K C3332 290 0512 00 CAP PXD ELCTLT 22UF 208 15V 56289 1960226 0015 1 C3360 290 0714 00 CAP PXD ELCTLT 2000UF 75 10 407 56289 390641 C3365 290 0525 00 CAP PXD ELCTLT 4 7UF 20 50V 56289 196D475X0050KAl C3374 281 0786 00 CAP FXD CER 150 10 100 72982 390049 5 015 3376 281 0759 00 CAP FXD CER DI 22PF 10 100V 72982 390 049 5 0220 C3464 290 0525 00 CAP PXD ELCTLT 4 7UF 208 50V 56289 19620475 0050 1 C3465 281 0788 00 CAP FXD CER 1 470 10 100 72982 B8005H9AADW5R471K C3468 281 0791 00 CAP FXD CFR DI 270PF 10 100V 80009 281 0791 00 3473 281 0786 00 CAP FXD CER DI 150PF 10 100V 72982 390049 5 151 3478 281 0792 00 PXD CER DI 82PF 10 100V 72982 390049 5 20 C3489 281 0792 00 DI 82PF 10 100V 72982 390049 5 0820 C3510 283 0002 00 CAP PXD CER DI 0 01UF 80 20 500V 72982 811 546 1032 3511 283 0103 00 21 180 5 500 56289 40 638 75 Replaceable Electrical Parts SC 504 Tektronix Serial Model No Mfr CktNo PartNo Eff Dscont Name amp
7. gt 206 Is 93148 741 SWITCH 53315 1 WILL DISCHARGE C3510 WHEN TAKEN OUT OF EXT MODE PARTIAL A3 TRIGGER BOARD REY A FEB 1979 2296 31 LOCKOUT gare Bie TRIGGERING lt gt scs TRIGGER SWITCH BOARD Indicates mounted on back Fig 8 7 Table 8 5 INDEX TO COMPONENT LOCATIONS SCHEMATIC CKT GRID CKT GRID CKT GRID CKT GRID NO Loc NO Loc Loc C3155 B6 03258 5 R3165 H2 R3284 12 C3163 H3 Q3260 05 R3168 C5 R3285 12 C3164 45 03261 5 R3174 L3 R3287 B3 C3165 14 Q3262 C3 R3250 J3 R3288 15 C3166 15 Q3263 C3 R3252 4 R3289 15 C3280 85 03264 C5 R3253 05 R3292 12 C3282 B6 03265 D3 R3254 F4 R3294 12 C3376 6 Q3266 H5 R3256 05 R3296 B5 Q3269 B5 R3257 H6 R3358 C6 Q3286 B5 R3258 D4 R3362 HS CR3259 D4 03366 7 R3259 05 93364 F7 CR3282 B3 Q3367 6 R3260 5 R3365 5 CR3348 C6 03368 F7 R3262 H6 R3367 F6 CR3359 H5 03373 K7 R3264 R3372 H6 CR3371 K6 R3266 H6 R3373 K7 CR3374 H7 R3268 B4 R3374 K7 2274 K2 R3273 H7 R3375 K6 R3146 4 R3275 L3 13270 B6 R3150 K5 R3276 H2 03276 12 R3152 K5 3277 85 03276 15 R3154 K5 R3278 K7 U3276C B3 Q3152 F4 R3156 L4 R3279 B5 Q3154 D4 R3160 J2 R3281 L5 3272 B4 Q3156 D4 R3162 J4 R3283 L5 3276 B6 3278 K2 SELECT GRE 4
8. F MI P AZ e p nn INTENSIFY ie BOARD 05 FROM DIAG M CHOPPER jov 21570 P3350 35V 07 0 moes 83248 R32SI INTEN 92178 W2450 s l 555 weise 32156 20v lt Passo R3348 br TRACE be SK ROTATION 883525 R3344 V aus 21 FLUX BAL INPUT p W3274 W870 03248 WINDING 01530 PARTIAL AE sv FOCUS INTENSITY Fu MULT BOARD aga 53340 ENT 5 mc 1 tw musa cisee FROM 100 PARTIAL TRIGGER BOARD L Rastel 61515 R1486 CRI IO w izao i RESISTOR PART OF THICK FILM RESISTOR NETWORK 1 1 THICKFILM 654 RESISTOR S T HH 91380 T Rere 210 680K 15 CK ERA 7 O aTuF ISV cesa CRI 80 360 20v pe SC504 CALIBRATOR CRT HIGH VOLTAGE AND Z AXIS REY A FEB 1979 2296 35 Table 8 9 INDEX COMPONENT LOCATIONS 5 GRID CKT GRID GRID NO Lo
9. 24 1979 Specification and Performance 5 504 Table 2 3 HORIZONTAL DEFLECTION SYSTEM Characteristics Ls Performance Requirements Supplemental Information Sweep generator Calibrated sweep 0 2 s to 50 ns div rates 21 steps in a 1 2 5 sequence Accuracy measured over center 8 divisions excluding first 50 ns and all after the first 100 divisions of magnified sweep 15 to 35 C 0 to 50 Unmag Magni Unmag Magni nified fied X10 nified fied X10 20 ms div to 2 3 3 4 2 us div Linearity 2 I division portion 5 6 6 7 within the center 8 divisions 2 s div to 50 ms div and 1 us div 3 44 4 5 and 50 ns div 8 Linearity 2 division portion 6 7 7 within the center 8 divisions Uncalibrated vari SECONDS DIV CAL variable able range control selected by an internal switch provides sweep rates that are continuously variable between the calibrated rates and extends the slowest sweep rate to at least 0 5 s div Trigger holdoff The SECONDS DIV CAL variable control selected by an internal switch increases trigger holdoff time by a factor of approximately 20 REV A MAR 1979 2 5 Specification and Performance 5 504 Table 2 3 cont Characteristics Performance Requirements Supplemental Information
10. ATTACHING PARTS 4 SCR ASSEM WSHR 4 40 X 0 312 INCH PNH STL 78189 vs LE DRUM ASSY INCLUDES 200 1332 00 1 COVER CAM SW 80009 200 1332 00 131 1248 00 1 CONTACT ELEC SHAFT GND 80009 131 1248 00 210 0406 00 2 NUT PLAIN HEX 4 40 X 0 188 INCH BRS 73743 2x12161 402 214 1704 01 2 SPRING PLAT CAM SW DETENT 0 008 INCH 80009 214 1704 01 214 1127 00 2 ROLLER DETENT 0 125 X 0 125 INCH L 80009 214 1127 00 9 5 Replaceable Mechanical Parts SC 504 Fig 8 Index Tektronix Serial Model No PartNo Dscont Qty 12345 Name amp Description Code Mfr Part Number 1 120 105 0753 00 1 ACTUATOR CAM SW TRIGGER SOURCE 80009 105 0753 00 ATTACHING PARTS 7 121 354 0219 00 RING RETAINING FOR 0 25 INCH SHAFT 79136 5103 25 MD R 122 401 0155 00 1 BEARING CAM SW FRONT 80009 401 0155 00 Ga sd 7123 210 0406 00 2 NUT PLAIN HEX 4 40 X 0 188 INCH BRS 73743 2x12161 402 124 401 0156 00 1 BEARING CAM SW REAR 80009 401 0156 00 125 1 BOARD ASSY TRIGGER SEE EPL 126 131 0604 00 10 CONTACT ELEC CKT CD SW SPR 80009 131 0604 00 7127 351 0213 00 1 GUIDE POST LOCK 0 285 INCH LONG 80009 351 0213 00 7128 136 0631 00 1 SOCKET PLUG IN 9 PIN FEMALE 00779 1 380949 9 136 0547 00 2 CONNECTOR RCPT 6 PIN FEMALE 00779 1 380949 6 129 129 0455 00 1 SPACER POST 0 305 L W 4 40 THD THRU 80009 129 0455 00 2130 214 0
11. sv C2483 R2483 68 PARTIAL A6 INTERFACE BD PARTIAL A3 TRIGGER BOARD 6504 REY A TEB 979 5 VOLTS SUPPLIES lt gt 2296 36 Table 8 10 INDEX 5 5 GRID GRID GRID Loc NO Loc Loc C3365 16 03472 F3 R3470 K4 3374 C6 Q3474 F7 R3472 C4 C3464 13 93475 C6 R3474 C3 C3465 93476 83475 C6 C3468 06 Q3478 5 R3476 07 C3473 4 03479 E4 R3477 07 C3478 03480 E7 R3479 03 C3489 03482 E8 3480 E4 03484 2 R3482 F8 03485 2 83484 03488 F2 R3485 7 CR3362 17 93486 F2 CR3364 C5 R3487 2 CR3370 5 R3369 06 R3488 2 CR3380 H7 R3378 C6 R3490 48 CR3466 K3 R3382 H8 R3492 J2 CR3475 L3 R3386 H7 R3494 F3 R3388 F6 R3460 D6 F3488 J1 R3461 K4 TP3365 L7 R3462 K3 TP3465 L3 R3463 05 Q3369 ce R3464 5 Q3372 F7 R3466 K4 VR3465 C4 Q3375 F8 R3468 6 VR3479 04 Q3470 C4 R3469 C4 B J K L M Ja4qo P3480 F3488 taasv Le FROM DG MAINFRAME 5 R3488 620 LOCATED ON MAINFRAME 475 7160 01160 sT pias gt 7 d cases Y CR3466 ST Laser R3470 5 36K 10 R3466 83500 qum VR3479 SOURCE VER 5 6K
12. Lord 20y 152433 Notes 7 54 MATCHED PAR 20v MATCHED PAIR REV A FEB 1919 2256 30 SC504 VERTICAL AMPLIFIER lt 3 gt TO LOWER VERT DP TO UPPER VERT Q ws270 lt EE lazo 6 6 Qwazr2o ofnie 4 W3274 y 3278 REV A FEB 1979 3400 Table 8 4 INDEX COMPONENT LOCATIONS SCHEMATIC GRID NO Loc NO LOC NO LOC NO LOC C3129 F2 HY3230 H1 R3100 F7 R3320 C3 C3130 6 HY3230A J4 R3110 E8 R3322 B3 C3139 HY3230B J6 R3112 E8 R3324 C4 C3140 EB HY3230C J6 R3114 E6 R3328 C3 C3142 J5 HY3230DK6 R3115 R3336 L6 C3210 HY3230E K6 R3116 E7 R3338 C5 C3212 HY3230F K6 R3118 D7 R3498 B4 C3228 E2 HY3230GK7 R3120 D8 R3510 E5 C3229 F2 HY3230HK5 R3122 E7 83511 C3232 HY32301 L7 R3124 D8 R3521 F4 C3240 H7 HY3230J L7 R3125 D7 R3522 H5 C3242 12 HY3230K L6 R3126 D6 93523 F4 C3243 HY3230L L6 R3127 E7 R3526 H5 C3324 B4 HY3230MK6 R3128 H7 R3527 F5 C3325 R3129 D6 R3528 H5 C3330 B5 13229 2 R3130 R3529 H5 3332 F2 L3329 R3134 06 C3510 E4 3334 R3135 E6 1110 J2 C3511 E4 3339 R3136 D8 3315 C1 C3520 13342 12 R3137 J4 3511A C6 C3521 F4 R3138 H7 3511B C6 C3525 H4 Q3132 6 R3142 45 53511 B6 3526 H5 03134 06 R3144 E8 53512 03135 44 R3210 ra 53514 4 03144 DS CR3120
13. Step 3 part d item 8 CHANGE to read Generator Setting Display Tolerance VOLTS DIV 1 Pilot Change 12 CHANGE TO 5v 5 div 2 0 EFF SN 010100 ELECTRICAL PARTS LIST ONLY R3226 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W R3228 315 0271 00 RES FXD CMPSN 271 OHM 5 0 25W Pilot Change 15 CHANGE TO EFF SN 010230 ELECTRICAL PARTS LIST AND SCHEMATIC CHANGES R1327 315 0122 00 RES FXD CMPSN 1 2K OHM 5 0 25W R1355 315 0122 00 RES FXD CMPSN 1 2K OHM 5 0 25W R1554 315 0432 00 RES FXD CMPSN 4 3K OHM 5 0 25W The above components are located on the MAIN circuit board assembly R1327 and R1355 are shown on diagram 2 CH 2 PREAMP amp CHANNEL SWITCHING R1554 is shown on diagram 1 CHANNEL 1 PREAMPLIFIER PAGE 2 OF 2 Tektronix MANUAL CHANGE INFORMATION COMMITTED TO EXCELLENCE Change Reference C4 479 Date 4 5 79 Product SC 504 07 0 2296 00 DESCRIPTION Page 7 4 REMOVE C2125 ADD C2132 Page 7 5 REMOVE C3322 Page 7 8 REMOVE J3188 J3290 ADD K3385 K3386 Page 7 16 CHANGE TO R3250 Page 7 18 CHANGE TO R3388 R3494 281 0773 00 281 0773 00 281 0601 00 131 1003 00 131 1003 00 148 0064 00 148 0064 00 315 0104 00 315 0241 00 315 0241 00 ELECTRICAL PARTS LIST CORRECTIONS FXD CER DI 0 01UF 102 100V FXD CER DI 0 01UF 10 100V FXD CER DI 7 5PF 500V CONNECTOR BODY CKT CD MT 3 PRON
14. read the knob skirt window labeled 10X Page 1 7 CHANGE the first sentence under Trigger Coupling to read Four methods of coupling the trigger signal to the trigger circuits can be selected with the TRIGGERING CPLG switches ADD the following trigger coupling information following the High Frequency Reject information DC Coupling all buttons out The dc coupling method accepts all trigger signals between dc and 80 MHz propuct SC 504 REFERENCE 1 478 DATE 4 21 78 DESCRIPTION Page 2 2 amp 2 3 Table 2 1 CHANGE all of Step Response aberrations as shown below Characteristics Performance Requirements Supplemental Information Step Response aberra tions Measured with a 5 division step verti cally positioned within the center 6 divisions and the input terminated in 50 Q First 100 ns 5 mV div to 2V div After 100 ns 5 mV div to 2 V div 5 V div to 10 V div Position Effect lt 32 change in aberrations as a 5 division step is vertically positioned over the graticule area Page 2 4 Table 2 2 CHANGE Trigger sensitivity DC coupling in the Supplemental Information column as shown below Supplemental Information Minimum Signal Required Interface propuct __ SC 50 CHANGE REFERENCE __ 1 478 pate 5721 78 CHANGE DESCRIPTION Page 2 5 Table 2 3 CHANGE Sweep Generator Linearity as shown below Cha
15. BSHG BUSHING FXO FIXED CABINET GSKT GASKET CAPACITOR HOL HANDLE CER CERAMIC HEX HEXAGON CHAS CHASSIS HEX HO HEXAGONAL HEAD HEXAGONAL SOCKET COMP COMPOSITION HLCPS HELICAL COMPRESSION CONN CONNECTOR HLEXT HELICAL EXTENSION cov COVER HIGH VOLTAGE CPLG COUPLING INTEGRATED CIRCUIT CATHODE RAY TUBE 10 INSIDE DIAMETER DEG DEGREE IDENT IDENTIFICATION DWR DRAWER IMPLR IMPELLER IN INCH SINGLE END INCANDESCENT SECT SECTION INSUL INSULATOR SEMICOND SEMICONDUCTOR INTL INTERNAL SHLO SHIELD LPHLDR LAMPHOLOER SHLOR SHOULDERED MACH SKT SOCKET MECH MECHANICAL SL SLIDE MTG MOUNTING SLFLKG SELF LOCKING NP NIPPLE SVG SLEEVING NON WIRE NOT WIRE WOUND SPRING ORDER DESCRIPTION 50 SQUARE oD OUTSIDE DIAMETER Ssr STAINLESS STEEL OVAL HEAD sr STEEL PHBRZ PHOSPHOR BRONZE sw SWITCH PL PLAIN or PLATE T TUBE PLSTC PLASTIC TERM TERMINAL PN PART NUMBER THO THREAD PNH PAN HEAD THK THICK PWR POWER TNSN TENSION RCPT RECEPTACLE TPG TAPPING RES RESISTOR TRH TRUSS HEAD RGD RIGID v VOLTAGE RLF RELIEF VAR VARIABLE RTNR RETAINER w WITH SCH SOCKET HEAD WSHR WASHER SCOPE OSCILLOSCOPE TRANSFORMER SCR SCREW XSTR TRANSISTOR 9 1 Replaceable Mechanical Parts SC 504 Mfr Code 0000M 00779 01295 06229 07707 08261 11897 12327 13103 22526 23050 55210 70276 71159 71279 73743 73803 7
16. SECTION 4 SECTION 5 SECTION 6 SECTION 7 SECTION 8 SECTION 9 THEORY OF OPERATION cont 20 V Supply 5 V Supply 5 V Supply Calibrator MAINTENANCE INFORMATION Removal and Replacement Circuit Board Removal and Replacement Preamplifier Hybrid Substrates Removal and Replacement Vertical Switch Boards Removal and Replacement Attenuator Substrates Removal and Replacement Cam Switch Contact Removal and Replacement Cleaning Information Using the Rear Interface Repackaging Information OPTIONS REPLACEABLE ELECTRICAL PARTS DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS REPLACEABLE MECHANICAL PARTS AND EXPLODED VIEW CHANGE INFORMATION 5 3 5 504 SC 504 SAFETY INFORMATION following general safety information applies to all operators and service personnel Specific warnings appear throughout the manual where they apply and should be followed in each instance WARNING statements identify conditions or practices which could result in personal injury or loss of life CAUTION statements identify conditions or practices which could result in damage to the equipment or other property The word DANGER on the equipment identifies areas of immediate hazard which could result in personal injury or loss of life The following safety symbols may appear on the equ
17. See Dot indicates 2 215 Parts List Depicted in grey 1 switch closure wie T SOK or with grey outline 5 2 gt Plug Index SEL Value Selected 3 at Factory Rit EL Reter to Waveform TO DIAG Refer to Diagram Number Test Voltage Coaxial Internal Screwdriver Shielding Adjustment Heat Sink Decoupled or Filtered Voltage Assembly Number Board Name j Etched Circuit Board 7777 Outlined in Black VERTICAL AMPLIFIER ane Number lt TRACE 288 CH 1 TRIG ROTATION INTERFACE TRIG OUT AMPLIFIER VERTICAL 15A SOURCE PRE COUPLING 5 VERTICAL DELAY OUTPUT LINE AMPLIFIER CH2 VERTICAL PRE AMP TRIGGER CHANNEL SW ew LOGIC amp CHOP oo OSCILLATOR jeni HORIZONTAL Text DEFLECTION 1 tric TMG SOURCE AMPLIFIER COUPLING D 15B INT TRIGGER TRIGGER RECOG COMPARATOR NIZER LINE gt GENERATOR rw TRIGGER CALIBRATOR 1 INTENSIFY Z AXIS lt AMPLIFIER LOW VOLTS POWER SUPPLIES SOURCE FOR ALL CIRCUITS HIGH VOLTS POWER SUPPLIES REV A FEB 1979 CRT BIAS 5 504 TRIGGERING CPLG WAVEFORM DIAGRAMS TRIGGERING SLOPE TRIGGERING LEVEL Midrange IN
18. 010 10 100 72982 8005H9AADWSRIO3K C4247 281 0773 00 10 109 100 72982 BOOSH9AADWSRlO3K 4310 290 0534 00 CAP FXD ELCTLT 1UF 20 35V 56289 1960105 0035 1 64312 290 0534 00 CAP FXD ELCTLT 1UF 20 35V 56289 1960105 0035 1 C4323 290 0534 00 10 20 35 56289 1960105 0035 1 C4347 281 0791 00 DI 270PF 10 100V 80009 281 0791 00 CR1110 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 144152 CR1140 152 0141 02 SEMICOND DEVICE SILICON 30V 1SOMA 07910 144152 1150 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR1218 152 0141 02 SEMICOND DEVICE SILICON 30V 1SOMA 07910 1N4152 CR1242 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR1246 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR1247 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1 4152 CR1252 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 280 152 0141 02 SEMICOND DEVICE SILICON 307 150 07910 1N4152 281 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR1296 152 0574 00 SEMICOND DEVICE SILICON 120V 0 15A 80009 152 0574 00 CR1297 152 0574 00 SEMICOND DEVICE SILICON 120V 0 15A 80009 152 0574 00 CR1330 152 0246 00 SEMICOND DEVICE SILICON 400PIV 200MA 80009 152 0246 00 CR1370 152 0061 00 SEMICOND DEVICE SILICON 175V 100MA 80009 152 0061 00 71 152 0061 00 SEMICOND DEVICE SILICON 175V 100MA 80009 152 0061 00 CR1372 152 0141 02
19. 100V 72982 8005 2 162012 C1556 290 0534 00 CAP FXD ELCTLT 1UF 2 35v 56289 196D105X0035HAl 1558 290 0534 00 CAP FXD ELCTLT 1UF 20 35V 56289 1960105 0035 1 1570 290 0526 00 FXD ELCTLT 6 8UF 208 6V 90201 TDC685MOO6EL 1575 285 1099 00 CAP FXD PLSTC 0 047UF 20 200V 19396 473 02 605 C2125 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSR103K 2133 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRlO3K 2137 290 0283 00 CAP FXD ELCTLT 0 47UF 10 35V 56289 1620474 9035 2 C2145 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 BOOSH9AADW5R103K C2161 281 0792 00 DI 82PF 10 100V 72982 390049 5 820 C2166 290 0512 00 CAP FXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 2183 283 0032 00 CAP PXD CER DI 470PF 5 500V 72982 831 5002504717 C2221 281 0773 00 CAP FXD CER DI 0 01UP 10 100V 72982 8005H9AADWSRIO3K C2233 281 0773 00 CAP PXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRIO3K C2236 281 0773 00 CAP PXD CER DI 0 01UF 108 100V 72982 8SOOSH9AADW5R103K C2257 290 0534 00 CAP PXD ELCTLT 1UF 20 35V 56289 196D105X0035HA1 C2313 281 0207 00 CAP VAR PLSTC 2 18PF 100V 80031 10 218 C2314 283 0326 00 DI 0 082UF 10 50V 16546 CW20C823K C2320 281 0773 00 CAP FXD CER 1 0 010 10 100 72982 B005H9AADWSR103K c2321 281 0158 00 CAP VAR CER 01 7 45 50 73899 DVJ 5006 C2325 281 0809 00 DI 200PF 5 100
20. 1219 K5 11140 81216 J6 R1242 1220 K5 Lii C8 R1217 J5 81243 F3 1233 D4 R1218 6 81245 C4 1238 F4 R1220 6 91250 F4 C1240 F4 91211 J6 1223 F5 R1252 F3 1241 Q1237A E4 R1224 5 C1242 H3 Q1237B E4 91225 D5 1110 Ds 1250 F4 Q1240 D4 81227 D4 1130 46 01241 F2 81228 5 CR1140 C2 1242 11231 F5 1150 C5 01250 R1232 5 VR1248 H3 gt E m Piezo READY LITE alls FROM 23 62 3 DIAG W RAMP CONTROL CURRENT _ FROM JIG ce 2 XY move C XY MODE 4 From J160 3 SWEEP RAMP DIAG 3 SWEEP RAMP Le 3wwo 4 DIAG E qi LA 20 Riso cunso l q m T 4 E E f sizzo Peo lt gt gt gt s20v 20 mes 1 Rizea EE 20 0K 200K MoLDorF RAMP rj AN 62 4 Ruse 7 gt 20K 1 CRIISO i VAR TTA E SHOWN IN P i RISO ud 5 HOLDOTE TIMING 5 y Wd D 1 DIAG E
21. 151 0341 00 151 0341 00 151 0342 00 151 0342 00 151 0342 00 151 1042 00 151 0225 00 151 0225 00 151 1042 00 151 0347 00 151 0347 00 151 0190 00 151 0350 00 151 0350 00 151 0347 00 151 0188 00 Mfr Name amp Description Code Part Number TRANSISTOR SILICON NPN SEL FROM 5918 80009 151 0333 00 TRANSISTOR SILICON NPN SEL FROM MPS918 80009 151 0333 00 TRANSISTOR SILICON NPN SEL FROM MPS918 80009 151 0333 00 TRANSISTOR SILICON NPN 80009 151 0225 00 TRANSISTOR SILICON NPN 80009 151 0225 00 TRANSISTOR SILICON PNP 80009 151 0220 00 TRANSISTOR SILICON PNP 80009 151 0220 00 TRANSISTOR SILICON NPN 80009 151 0190 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON NPN 80009 151 0190 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0220 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON NPN 07263 5040065 TRANSISTOR SILICON NPN 07263 S040065 ILICON NPN 07263 5040065 TRANSISTOR SILICON NPN 80009 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 TRANSISTOR SILICON PNP 80009 151 0342
22. 2 13 Specification and Performance Check SC 504 a Connect Sms time marks from a time mark generator through a 50 coaxial cable with a 50Q termination to the CH 1 input connector b Use the horizontal POSITION control to place the first time marker under the first vertical graticule line The second time marker should be under the tenth vertical graticule line CHECK that rotating the SECONDS DIV CAL control fully counterclockwise positions the second time marker to the left of the fourth vertical graticule line d Disconnect all cables and return the front panel controls to the preliminary settings 13 Check the Phasing The front panel control settings are the same as the preliminary settings with the following exceptions CH 1 VOLTS DIV 50m CH 2 VOLTS DIV 2 DISPLAY Connect 50 kHz signal from leveled sine wave generator through 500 coaxial cable with 500 termination dual input coupler that order to the CH 1 and CH 2 input connectors b Adjust the generator for a vertical deflection of 8 major graticule divisions Rotate the POSITION controls to center the display the crt screen d CHECK that the horizontal opening at screen center is less than 0 4 major graticule division e Disconnect all cables and return the front panel controls to the preliminary settings 14 Check the Crt Geometry The front panel control settings are the same as the
23. 53315 SHOWN IN INT POSITION Q3478 STAY CHI CH2 LINE EXT INT I one 750 270 EN R3260 15 0K R3388 B 03372 R3366 10K 1 8 TO 20v 33 5 FROM MAINFRAME REV A FEB 1973 1156 37 LOCATED ON dresses DIAS MAINFRAME 20 VOLTS SUPPLIES X Gain Step 12 R1160 Step 14 Step 1 Step 1 R1345 Step 13 R1167 Cal Cal Mag Step 15 TP1110 1112 Step 10 Step 16 Step 12 Reg X10 Gain C1330 C1238 C1349 1155 81169 315 Step3 s Beam Current Step 12 Step 12 Step 12 7 81580 Ris9s C1527 R1445 C1447 R1565 R1590 Step3 Step 5 11 Step 7 Fig 8 11 Main Board Gain 1 Bal 2 Current Rotation R1455 R1570 TP1575 R1585 REV A FEB 1979 Step 21 Step 21 R3110 R3115 Fig 8 12 Trigger Board Step 20 Trig View Bal R3336 REV A FEB 1979 Step 12 R2242 Step 8 Step 12 L2347 C2321 Step 12 R2310 Fig 8 13 Focus amp Intensity Board Step 12 Step 12 Step 12 Step 12 REV A APR 1979 C2313 R2321 C2341 C2343 Step 11 Gain 2 Step 2 Step 2 R2336 5V 5V TP2460 TP2462 Step 17 S
24. 81 334 2361 00 1 MARKER IDENT WARNING UP TO 80V ON THIS BOARD 82 358 0281 00 2 GROMMET PLASTIC 80009 358 0281 00 83 334 1379 00 1 LABEL CRT ADHESIVE BACK 80009 334 1379 00 84 1 COIL TUBE DEFL SEE 12156 9 4 e Fig amp Index 1 85 86 87 88 89 101 102 103 104 105 106 107 108 109 110 elll 112 113 114 115 116 117 118 119 Replaceable Mechanical Parts SC 504 Tektronix Serial Model No PartNo Dscont 12345 Name amp Description Code Mfr Part Number 337 2437 01 1 SHIELD CRT W DELAY LINE 80009 337 2437 01 426 1199 01 1 FR SECT PLUG IN BOTTOM 80009 426 1199 01 214 2585 00 2 SPRING GROUND COPPER BERYLLIUM 80009 214 2585 00 ATTACHING PARTS FOR EACH 211 0008 00 1 SCREW MACEINE 4 40 X 0 25 INCH PNH STL 83385 OBD 210 0330 00 2 TERMINAL LUG 0 375 ID STEEL 80009 210 0330 00 ATTACHING PARTS FOR EACH 211 0008 00 1 SCREW MACEINE 4 40 X 0 25 INCH PNH STL 83385 131 2037 00 2 CONTACT ELEC HYBRID GROUND 80009 131 2037 00 ATTACHING PARTS FOR EACH 211 0008 00 1 SCREW MACHINE 4 40 X 0 25 INCH PNH STL 83385 OBD get IS 214 2586 00 8 SPRING RTNG COPPER BERYLLIUM 80009 214 2586 00 334 2363 00 1 MARKER INDENT WARNING DANGER HV 80009 334 2363 00 1 VOLTAGE MULTR SEE 01590 EPL ATTACEING PARTS 210 0407 00 2 NUT PLAIN HEZ 6 32 X 0 25 INCH BRS 73743 3038 0228 402 VICA SNO 1 BOARD ASSY TRIGGE
25. CONNECTOR TERM 0 48 L 22 26AWG WIRE 22526 75691 005 247 131 1538 00 4 CONTACT ELEC CRIMP ON 22 26 AWG WIRE 22526 75369 002 248 175 0826 00 FT WIRE ELECTRICAL 3 WIRE RIBBON 08261 175 0826 00 249 175 0828 00 FT WIRE ELECTRICAL 5 WIRE RIBBON 08261 OBD 9 8 e Replaceable Mechanical Parts SC 504 Fig amp Index Tektronix Serial Model Mfr No PartNo Dscont Qty 12345 Name amp Description Code Mfr Part Number 1 250 175 0863 00 FT WIRE ELECTRICAL 2 WIRE RIBBON 08261 OBD 251 210 0774 00 2 152 OD X 0 245 INCH L BRS 80009 210 0774 00 252 210 0775 00 2 126 OD X 0 23 INCH L BRS 80009 210 0775 00 253 352 0161 03 2 WIRE ORANGE 80009 352 0161 03 352 0161 04 2 WIRE YELLOW 80009 352 0161 04 352 0161 05 2 CONN BODY PL EL 3 WIRE GREEN 80009 352 0161 05 352 0161 09 1 CONN BODY PL EL 3 WIRE WHITE 80009 352 0161 09 254 352 0163 05 1 CONN BODY PL EL 5 WIRE GREEN 80009 352 0163 05 255 352 0169 00 1 CONN BODY PL EL 2 WIRE BLACK 80009 352 0169 00 195 0189 00 1 LEAD ELECTRICAL DEPLECTION 80009 195 0189 00 9 9 ACCESSORIES Fig amp Index Tektronix Serial Model No Mfr No PartNo Dscont 12345 Name amp Description Code Mfr Part Number 070 2296 00 1 MANUAL TECH INSTRUCTION 80009 070 2296 00 5 504 5 504 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 s
26. REMOVE 3180 100 OHM and symbol REMOVE J3188 P3188 to 2 DIAG 2 and symbols ADD C1446 0 01 UF between left end of R1446 and ground ADD C1548 0 01 UF between pin 5 of 1530 and ground DIAGRAM 2 CHANNEL 2 PREAMPLIFIER AND CHANNEL SWITCHING REMOVE J3290 P3290 FROM CH 1 DIAG 1 and symbols ADD C1342 0 01 UF between left end of R1344 and ground ADD C1448 0 01 UF between pin 5 of HY1430 and ground DIAGRAM 3 VERTICAL AMPLIFIER ADD Another asterisk to circuit numbers Q2230 and Q2330 ADD The following under NOTES MATCHED PAIR CHANGE Q2131 symbol to a PNP transistor symbol DIAGRAM 4 TRIGGERING CHANGE these circuit numbers J500 to J3200 R510 to R3210 C510 to C3210 C512 to C3212 R512 to R3212 CHANGE R3322 to 53 6 ohm CHANGE 063324 to 4 7 CHANGE R3324 to 53 6 ohm ADD C3325 4 7 PF between base of 03224 and ground PRODUCT ___ SC 504 CHANGE REFERENCE C1 478 2721 78 DESCRIPTION DIAGRAM CHANGE CHANGE DIAGRAM CHANGE CHANGE CHANGE CHANGE CHANGE CHANGE DIAGRAM CHANGE CHANGE CHANGE CHANGE 5 SWEEP GATING REMOTE RESET to REMOTE RESET located near coordinate A2 Circuit number 3275 to 3375 7 HORIZONTAL PREAMPLIFIER amp OUTPUT AMPLIFIER BOARD R1167 to R4227 to 300 ohm R4342 to 6 81 ohm R4135 to 442 ohm R4112 to 6 49 ohm R4136 to 442 ohm 8 CALIBRATOR
27. X Y operation Bandwidth Dc to at least 2 MHz Deflection factor Selected channel 2 controls and horizontal mag x1 x10 Accuracy 5 X and Y amplifier phase difference Less than 3 at 50 kHz or less _ Ac low frequency 10 Hz or less 1 Hz with 10X probe response lower 3 dB point Input R and C 1 MQ 1 paralleled by approximately 20 pF Maximum safe input voltage Peak dc peak 250 V coupled 400 V ac coupled Peak to peak 500 V at 1 kHz or less ac components derates to 10 V at 100 MHz Table 2 4 CATHODE RAY TUBES T Characteristics Requirements Supplemental Information Geometry Bowing or tilt 0 1 major division or less Orthogonality 90 C 1 4 C Phosphor P31 Acceleration potential 12 Graticule Scale is 8 x 10 divisions with 0 25 inch div with internal graticule lines 2 6 Specification and Performance Check SC 504 Table 2 5 POWER SUPPLIES AND CALIBRATOR Characteristics Performance Requirements Supplemental Information gt Calibrator Voltage 0 6 V 1 Frequency Approximately 1 kHz Power consumption Approximately 26 watts operating Less than 1 W with TRIGGER SOURCE switch set to STBY stand by Table 2 6 REAR INTERFACE INPUT AND OUTPUT SIGNALS Characteristics Performance Requirements
28. 00 TRANSISTOR SILICON NPN 04713 2N2219A 07263 5040065 07263 5040065 07263 5040065 80009 151 0134 00 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON NPN 80009 151 0347 00 80009 151 0342 00 80009 151 0347 00 07263 5040065 07263 5040065 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 SEMICOND DVC SE MATCHED PAIR FET 80009 151 1042 00 TRANSISTOR SILICON NPN 80009 151 0225 00 TRANSISTOR SILICON NPN 80009 151 0225 00 SEMICOND DVC SE MATCHED PAIR 80009 151 1042 00 80009 151 0347 00 80009 151 0347 00 TRANSISTOR SILICON NPN 80009 151 0190 00 TRANSISTOR SILICON PNP 80009 151 0350 00 TRANSISTOR SILICON PNP 80009 151 0350 00 TRANSISTOR SILICON NPN 80009 151 0347 00 TRANSISTOR SILICON PNP 01295 2N3906 Replaceable Electrical Parts SC 504 Tektronix Serial Model No CktNo PartNo Dscont Name amp Description Q4230 151 0341 00 TRANSISTOR SILICON NPN R210 317 0200 00 RES PXD CMPSN 20 OHM 5 0 125W R211 317 0910 00 RES PXD CMPSN 91 OHM 5 0 125W R213 321 1389 03 RES FXD FILM lllK OHM 0 25 0 125W R215 321 0807 03 RES PXD FILM 900K OHM 0 25 0 125W 2217 315 0105 00 RES PXD CMPSN 1M 5 0 25 R220 317 0240 00 FXD CMPSN 24 5 0 1254 R221 317 0470 00 PXD CMPSN 47 OHM 5 0 125W R223 321 1389 03 FXD FILM 1llK 0 25 0 125 R225 321 0807 03 FXD FILM 900K 0 25 0 125 R227 321
29. 01121 CB6215 R3486 315 0270 00 RES FXD CMPSN 27 OHM S 0 25W 01121 2705 R3487 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W 01121 1035 R3488 315 0621 00 RES FXD CMPSN 620 OHM 5 0 25W 01121 CB6215 R3490 308 0685 00 RES FXD WW 1 5 OEM 10 1W 75042 BW20 1R500J R3492 308 0685 00 FXD WW 1 5 OHM 108 1W 75042 BW20 1R5007 R3494 321 0241 00 FXD FILM 3 16K OHM 1 0 125W 91637 MFF1816G31600F R3496 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W 01121 1035 R3498 315 0105 00 RES FXD CMPSN 1M OHM 51 0 25W 01121 1055 R3510 315 0104 00 RES FXD CMPSN 100K 5 0 25 01121 1045 R3511 315 0114 00 5 110 OHM 5 0 25W 01121 1145 R3521 315 0105 00 FXD CMPSN 1M OHM 5 0 25W 01121 1055 R3522 315 0270 00 RES FXD CMPSN 27 OHM 5 0 25W 01121 2705 83523 315 0240 00 RES FXD CMPSN 24 OHM 5 0 25W 01121 CB2405 R3526 321 0052 00 RES PXD FILM 34 OHM 1 0 125W 91637 MFF1816G34ROOF R3527 311 1221 00 RES VAR NONWIR 50 20 0 504 32997 3386F T04 500 R3528 321 0179 00 715 OHM 1 0 125W 91637 18166715 R3529 321 0179 00 PXD FILM 715 OHM 1 0 125W 91637 MFF1816G715ROF 4112 321 0294 00 FXD FILM 11 3K OHM 1 0 125W 91637 1816611301 R4113 321 0345 00 RES FXD FILM 38 3K OHM 1 0 125W 91637 1816638301 R4115 315 0620 00 RES FXD CMPSN 62 OHM 5 0 25W 01121 CB6205 R4127 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W 01121 CB1015 R4130 315 0620 00 RES FXD CMPSN 62 OHM 5 0
30. 1 input connector b Adjust the generator for a display of 8 major graticule divisions c CHECK that when rotating the TRIGGERING LEVEL contro fully clockwise or counterclockwise the trace disappears d Readjust the generator for 2 8 V to Signal and reconnect this signal to the EXT TRIG input connector e Change the TRIGGERING SOURCE switch to the EXT position f CHECK repeat part c 9 Disconnect all signals and return the front panel controls to the preliminary settings 10 Check the Auto and Single Sweep Reset Modes of Operation The front panel control settings are the same as the preliminary settings with the following exceptions CH 1 VOLTS DIV 4 CH 2 VOLTS DIV 2 CHECK for a visible trace 5 Push the MODE NORM switch c CHECK that the trace disappears d Connect 1 ms pulses from the time mark generator through a50 coaxial cable with a 50 Q termination to the CH 1 input connector Adjust the TRIGGERING LEVEL control for a stable display e Momentarily depress and release the MODE SGL Specification and Performance Check SC 504 f CHECK that the display appears once each time the switch is depressed 9 Disconnect all cables and return the front panel controls to the preliminary settings 11 Check the Horizontal Sweep Rates The front panel control settings are the same as the preliminary settings with the following exceptions CH 1 VOLTS
31. 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 Tektronix Serial Model No PartNo Dscont 376 0029 00 213 0075 00 131 0907 00 214 2666 00 211 0244 00 200 2105 00 211 0214 00 352 0492 00 214 2587 01 210 0406 00 214 1126 01 214 1752 00 401 0379 00 105 0749 00 210 0406 00 401 0381 00 210 0406 00 214 1126 01 214 1752 00 401 0379 00 210 0406 00 401 0380 00 376 0182 00 105 0750 00 211 0507 00 358 0016 00 211 0507 00 337 2428 00 211 0244 00 337 2429 00 334 2363 00 334 3299 00 214 0579 00 136 0252 04 131 0639 00 129 0455 00 131 0382 00 131 0608 00 131 0604 00 136 0514 00 131 1857 00 198 3548 00 672 0652 00 212 0109 00 214 1061 00 426 1245 01 ware eR PRB RE NNR EN EEN NOR EN Qty 12345 Replaceable Mechanical Parts SC 504 Name amp Description CPLG SHAFT RGD 0 128 ID X 0 312 OD X 0 5 EACH COUPLER INCLUDES SETSCREW 4 40 X 0 094 INCH HEX SOC STL RES VAR NONWIR SEF R1365 AND 1560 EPL ACTR ASSY CAM S SEE 1325 AND 81525 EPL CONTACT ELEC GROUNDING CONTACT ELEC GROUNDING EACH ACTR ASSY INCLUDES SCR ASSEM WSHR 4 40 X 0 312 INCH PNH STL COVER CAM SW 4 amp 24 ELEMENTS AL ATTACHING PARTS SCREW MACEINE 4 40 X 0 25 STL
32. 4 2 CHANGE the drawing cutline to Fig 4 2 Channel switching gates Page 4 3 CHANGE the drawing cutline to Fig 4 1 Signal attenuation Page 5 7 CHANGE the information under Sweep A Gate Out to read This positive going gating signal is applied to connector 26A ground reference at contact 25A The active level is approximately 5 volts during the sweep and approximately zero volts otherwise Source impedance is 1 ka propuct _5 5 _ CHANGE REFERENCE C1 478 pate 4 21 78 DESCRIPTION REPLACEABLE ELECTRICAL PARTS LIST CORRECTIONS Page 7 3 REMOVE all information associated with circuit numbers C116 through C241 11 consecutive lines ADD 8 670 5116 00 BOARD ASSY VERTICAL SWITCH 01342 281 0773 00 CAP FXD CER DI 0 01UF 102 100V Page 7 4 CHANGE TO C1374 283 0341 00 CAP FXD CER DI 0 047UF 102 100V ADD C1446 281 0773 00 CAP FXD CER DI 0 01UF 102 100V C1448 281 0773 00 CAP FXD CER DI 0 01UF 102 100V C1548 281 0773 00 DI 0 01UF 10 100V Page 7 5 REMOVE C3182 281 0759 00 CAP FXD CER DI 22PF 10Z 100V ADD C3324 281 0618 00 CAP FXD CER DI 4 7 PF 500V C3325 281 0618 00 CAP FXD CER DI 4 7 PF 500V Page 7 8 CHANGE Ckt No HVN1590 to U1590 Page 7 9 CHANGE TO Q2220 153 0609 00 SEMICOND SE SILICON PNP MATCHED PAIR 02320 ped 153 0609 00 SEMICOND DVC SE SILICON PNP MATCHED PAIR Q2330 REMOVE footnote 1 Page 7 10 CHANGE TO Q3520
33. 4 4 50nsor less less AC low frequency response 10 Hz or less 1 Hz with 10X probe Lower 3 dB point Deflection factor Calibrated range 5 mV to 10 V div 11 steps in a 1 2 5 sequence 15 C to 0 C to 50 C Accuracy 2 3 Variable in cal position fully cw gain correctly set at 10 mV div Add 1 to above figures for channel 2 in CH1 CH2 differen tial mode Attenuator step balance Less than 1 division of shift as each VOLTS DIV Switch is rotated through out its range Specification and Performance 5 504 Table 2 1 cont Characteristics Performance Requirements Supplemental Information Less than 2 divisions of shift as each variable CAL control is rotated throughout its range Variable balance Uncalibrated variable Continuously variable between least a 2 5 1 range range calibrated steps Extends maximum attenuator step to at least 25 V div Input R and C 1 MQ 1 paralleled by approximately 20 pF Maximum input voltage Peak dc Peak ac 250 V dc coupled 400 V ac coupled Peak to peak ac 500 V at 1 kHz or less component derates to 10 V at 100 MHz Common mode rejection At least 50 1 up to 1 MHz and ratio 10 1 up to 10 MHz when using same attenuator settings common mode signal 6 divisions or less Step Response aberrations First 300 ns 5 mV div to 2 V div Positive going step
34. 5 V regulator is supplied from the mainframe 11 5 V un regulated supply The regulator for the 5 V supply is composed of operational amplifier 2263 and the series pass transistor in the mainframe The series pass transistor is driven by emitter follower Q2469 Feedback for the amplifier is through C2161 and R2163 The supply voltage is established by comparing the voltage at the negative input pin 2 of U2263 with the 20 V reference at the positive input pin 3 Any difference between the negative and positive inputs of U2263 causes a change in the conduction of the series pass transistor correcting the output error For example if 5 V goes to 6 V pin 2 of U2263 goes more positive causing pin 6 of U2263 to go more negative This reduces conduction in Q2469 which in turn reduces conduction in the series pass transistor in the mainframe causing the output voltage to drop back to 5 V 5 V Supply Power for the 5 V regulator is supplied by the rectified 17 5 V source from the mainframe The regulator is composed of operational amplifier U2480 and a series pass transistor in the mainframe The series pass tran sistor is driven by the emitter follower Q2382 Feedback for the amplifier is through R2483 and C2483 The circuit description is identical to the 5 V supply with the exception of the protection circuit composed of Q2476 and associated components normal operation 02476 provides a current source but if the 5 V
35. 50 Hz attenuated 7 CPLG AC LF When depressed this pushbutton capacitively couples the signals to the input of the trigger circuit The dc component is rejected and the signals below approximately 10 kHz are attenuated 8 CPLG When this pushbutton is depressed all signals above approximately 50 kHz are attenuated 9 SOURCE This switch selects the source of the trigger signal coupled to the input of the trigger circuit STBY This position turns the internal regulated voltage off 1 2 CH 1 In this position a sample of the signal available in channel 1 is used as a trigger signal CH 2 In this position a sample of the signal available in channel 2 is used as a trigger signal LINE In this position a sample of the power line frequency is used as a trigger signal EXT This position selects the signal connected to the EXT TRIG connector for triggering INT In this position the signal connected through the rear interface connector and the power module is used as the triggering signal 10 PWR ON This light indicates when power is applied to the SC 504 11 READY TRIG D This light indicates that the single sweep is armed or that the sweep is properly triggered 12 PULL X10 HORIZ MAG When this switch is pulled blue band exposed the displayed sweep rate increases by a factor of 10 This magnification is also present in the XY mode CAL This control through an internal switch
36. CRT HIGH VOLTAGE AND Z AXIS R1370 to 910 ohm C1374 to 0 047 UF 11270 to 820 UH Circuit number L1292 to 1292 MANUAL CHANGE INFORMATION TEKTROINI2 propuct__S 504 REFERENCE __ 2 478 _ committed to 070 2296 00 pate _4 27 78 technical excellence CHANGE DESCRIPTION EFF ALL SN REPLACEABLE ELECTRICAL PARTS LIST CORRECTIONS Page 7 6 Remove all information associated with circuit numbers C4130 and C4146 ADD C4234 281 0773 00 CAP FXD CER DI 0 01UF 102 100V Page 7 9 CHANGE TO Q1280 151 0301 00 TRANSISTOR SILICON PNP Page 7 14 CHANGE TO R2310 311 1225 00 RES VAR NONWIR 1K OHM 202 0 50W Page 7 15 CHANGE TO R2313 315 0681 00 RES FXD CMPSN 680 OHM 5 0 25W R2411 315 0511 00 RES FXD CMPSN 510 OHM 5 0 25W SCHEMATIC CHANGES DIAGRAM 3 VERTICAL AMPLIFIER CHANGE R2313 to 680 ohm CHANGE R2411 to 510 ohm CHANGE R2310 to 1K ohm DIAGRAM 7 HORIZONTAL PREAMPLIFIER amp OUTPUT AMPLIFIER BOARD REMOVE 04130 01 UF and symbol REMOVE C4146 01 UF and symbol ADD C4234 0 01 UF between base of 04230 and ground DIAGRAM 8 CALIBRATOR CRT HIGH VOLTAGE AND Z AXIS REMOVE 13490 P3490 and symbols located near coordinate ADD Continuity of 33 5 V lines from PARTIAL TRIGGER BOARD to P1290 located near coordinate A6 MANUAL CHANGE INFORMATION CHANGE REFERENCE __C3 1178 DATE 11 14 78 TEKTRONDC committed to technical e
37. OHM 1 0 25W 91637 MFF1816G49900F 83275 315 0102 00 FXD CMPSN 1K OHM 5 0 25W 01121 1025 3276 315 0622 00 5 6 2 OHM 5 0 25W 01121 6225 R3277 321 0241 00 FXD FILM 3 16K OHM 18 0 1250 91637 MFF1816G31600F R3278 315 0471 00 FXD CMPSN 470 OHM 5 0 25W 01121 CB4715 R3279 315 0751 00 RES PXD CMPSN 750 OHM 5 0 25W 01121 7515 R3281 315 0751 00 RES PXD CMPSN 750 OHM 5 0 25W 01121 7515 R3282 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W 01121 CB1035 R3283 315 0751 00 RES FXD CMPSN 750 OHM 5 0 25W 01121 7515 R3284 315 0751 00 RES PXD CMPSN 750 5 0 25 01121 CB7515 83285 315 0751 00 750 OHM 5 0 25W 01121 7515 83286 315 0103 00 FXD CMPSN 10K OHM 5 0 25W 01121 1035 R3287 315 0101 00 5 100 OHM 5 0 25W 01121 1015 83288 315 0470 00 FXD CMPSN 47 OHM 5 0 25W 01121 4705 3289 315 0470 00 FXD CMPSN 47 OHM 5 0 25W 01121 4705 3290 315 0152 00 RES FXD CMPSN 1 5K 5 0 254 01121 1525 R3292 315 0470 00 RES FXD CMPSN 47 5 0 25 01121 4705 3294 315 0470 00 47 OHM 5 0 25W 01121 4705 3296 315 0183 00 RES FXD CMPSN 18K OEM 5 0 25W 01121 1835 83315 315 0104 00 RES FXD CMPSN 100K OHM 5 0 25W 01121 1045 R3320 315 0240 00 RES FXD CMPSN 24 OHM 5 0 25W 01121 cB2405 R3322 321 0074 00 RES FXD PILM 57 6 OHM 1 0 125W 91637 MFF1816G57R60F R3324 321 0074 00 RES PXD F
38. Q3234 and the collector of Q3235 goes high If the base of Q3234 is lower the collector of Q3235 is lowered Both outputs of the trigger comparator are supplied to and switched internally by the gate generator U3238 These signals are taken from 3238 via 03236 and 03237 and fed to the Trigger View circuit Gate Generator Integrated circuit U3238 converts the output signals from the trigger comparator to a gate waveform which is used for sweep generator control With the slope select pin 1 of IC U3238 connected to ground a high signal 3 V to 4 V on 13 of U3238 causes 3 gate output to go more positive and pin 4 to go more negative Pin 14 goes negative The output gate occurs when pins 13 and 14 are within about 20 mV of each other Ungrounding pin 1 causes gate outputs from pins 3 and 4 when pin 13 is negative going and pin 14 positive going The reset holdoff signal from pin 9 of IC 03158 causes pins 6 and 10 to go high during the holdoff time after the completion of the sweep This inhibits the gate generator until after holdoff time when pins 6 and 10 go more negative The triggered gate and holdoff outputs are available on the rear interface connector through pins 25B 268 and 20 21B Sweep Control Operation The sweep control circuit recognizes initiating gates from the trigger circuitry and uses these gates to startand stop the sweep as well as reset the trigger gating generator The control circu
39. R1224 321 0414 03 FXD FILM 200K 0 25 0 125 R1225 321 0318 03 RES FXD FILM 20K 0 25 0 125 R1227 315 0470 00 RES FXD CMPSN 47 5 0 25 R1228 315 0102 00 RES FXD CMPSN 1K OHM 5 0 25W R1231 321 0318 03 RES FXD FILM 20K OHM 0 25 0 125W R1232 321 0414 03 RES PXD PILM 200K OHM 0 25 0 125W R1233 321 0510 00 PXD FILM 2M OHM 18 0 125W R1234 315 0103 00 81235 315 0183 00 FXD CMPSN l8K OHM 1240 315 0181 00 RES PXD CMPSN 180 OHM 58 0 25W R1241 315 0620 00 RES FXD CMPSN 62 OHM 5 0 25W R1242 315 0103 00 RES PXD CMPSN 10K OHM 5 0 25W Mir Code 07263 01121 01121 91637 91637 01121 01121 01121 91637 91637 91637 91637 91637 01121 01121 01121 01121 91637 91637 01121 01121 01121 01121 01121 01121 73138 73138 01121 73138 91637 32997 80009 01121 01121 01121 01121 01121 01121 01121 91637 91637 91637 01121 01121 91637 91637 91637 01121 01121 01121 01121 01121 Mfr Part Number 5040065 2005 9105 MFF1816D11102C MFF1816D90002C 1055 2405 4705 1816011102 MFF1816D90002C HFF1813D10003C MFF1816D25002C 1816080002 BB5105 1055 BB5605 CB1815 MFF1816C125ROB MFF1816D39080C CB1025 CB6205 CB1025 1035 1625 13M501 72 76 0 252 72X 23 0 501K CB2425 72X 23 0 501K MFF1816G10000F 3386X T07 101 311 0546 00 CB6225 CB6225 CB1025 CB4725 CB1045 CB6235 CB2445 1813 20003 MFF1
40. R2183 315 0391 00 RES PXD CMPSN 390 OHM 5 0 25W 01121 3915 R2185 315 0472 00 01121 4725 R2186 315 0472 00 RES FXD CMPSN 4 7K OHM 51 0 25W 01121 4725 2188 315 0472 00 RES FXD CMPSN 4 7K OHM 5 0 25W 01121 4725 R2189 315 0472 00 RES PXD CMPSN 4 7K OHM 5 0 25W 01121 CB4725 R2190 315 0621 00 RES FXD CMPSN 620 OHM 5 0 25W 01121 6215 R2192 315 0821 00 RES FXD CMPSN 820 OHM 5 0 25W 01121 8215 2194 315 0821 00 RES FXD CMPSN 820 OHM 54 0 25W 01121 CB8215 R2195 315 0431 00 RES FXD CMPSN 430 OHM 5 0 25W 01121 4315 R2197 311 1948 00 RES VAR NONWIR PNL 1K OHM 20 0 50W 12697 41723 R2210 321 0143 00 RES FXD FILM 301 OHM 1 0 125W 91637 MFF1816G301ROF R2211 321 0091 00 RES FXD PILM 86 6 OHM 1 0 125W 91637 MFF1816G86R60F R2212 321 0111 00 RES FXD FILM 140 OHM 1 0 125W 91637 MFF1816G140ROF R2214 315 0390 00 RES PXD CMPSN 39 OHM 5 0 25W 01121 3905 R2220 321 0086 00 RES FXD FILM 76 8 OHM 1 0 125W 91637 MFF1816G76R80F R2224 315 0390 00 RES FXD CMPSN 39 OHM 5 0 25W 01121 3905 R2225 315 0391 00 RES FXD CMPSN 390 OHM 51 0 25W 01121 3915 R2226 315 0622 00 RES PXD CMPSN 6 2K OHM 5 0 25W 01121 6225 R2227 321 0082 00 FXD FILM 69 8 OHM 1 0 125W 91637 MFF1816G69R80F R2231 315 0241 00 RES FXD CMPSN 240 OHM 54 0 25W 01121 2415 82233 321 0134 00 RES PXD FILM 243 OHM 18 0 125W 91637 MFF1816G243ROF R2236 315 0331 00 RES PXD CMPSN 330 OHM 5 0 25W 01121 3315 R2237 321 0101 00 RES P
41. SILICON 30V 150MA 07910 1N4152 CR3120 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3124 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3126 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 184152 CR3128 152 0141 02 SEMICOND DEVICE SILICON 30V 1SOMA 07910 1N4152 CR3188 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 104152 CR3222 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3224 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3235 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3244 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3248 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3252 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3258 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3259 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3282 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3284 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 104152 CR3285 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3348 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3359 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3362 152 0066 00 SEMICOND DEVICE SILICON 400V 750MA 80009 152 0066 00 CR3364 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3370 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3371 152 0141 02 SEMICOND DEVICE SILICON 30V
42. Sore Rieke HOLDER CONTACT HANGER SWITCH W CONTACT NUT PLAIN HEX 4 40 X 0 188 INCH BRS SPRING FLAT GREEN COLORED ROLLER DETENT BEARING CAM SW END 0 6 DIA ACTUATOR SW AC GND DC NUT PLAIN HEX 4 40 X 0 188 INCH BRS BEARING CAM SW CENTER NUT PLAIN HEX 4 40 X 0 188 INCH BRS SPRING PLAT GREEN COLORED ROLLER DETENT BEARING CAM SW END O 6 DIA NUT PLAIN EEX 4 40 X 0 188 INCH BRS BEARING CAM SW CENTER 192 AND 0 25 DIA SFT ACTUATOR CAM SW ATTENUATOR CKT BOARD ASSY MAIN SEE Al EPL BOARD ASSY SEE 5 ATTACHING PARTS SCREW MACHINE 6 32 X 0 312 INCH PNE STL Sue TRUST s BUSHING RUBBER ATTACHING PARTS SCREW MACHINE 6 32 X 0 312 INCH PNH STL SHIELD ELEC HIGH VOLTAGE ATTACHING PARTS SCR ASSEM WSHR 4 40 X 0 312 INCH PNH STL SEIELD ELEC CIRCUIT CARD MARKER INDENT WARNING DANGER EV MARKER IDENT MARKED DANGER 150V TERM TEST PT 0 40 INCH LONG SOCKET PIN 0 188 INCH LONG CONNECTOR BODY SEE 21420 AND 21520 EPL CONTACT ELEC SPR CLIP TYPE SPACER POST 0 305 L W 4 40 THD THRU BRS TERMINAL STUD 0 812 L INSULATED CONTACT ELEC 0 365 L X 0 25 PH BRZ GOLD PL CONTACT ELEC CKT CD SW SPR SOCKET PLUG IN MICROCIRCUIT B CONTACT TERM SET PIN 36 0 025 SQ 0 1 CTRS WIRE SET ELEC CKT BOARD ASSY DISPLAY MODE W CAM SWITCH ATTACEING PARTS SCREM MACHINE 8 32 X 0 188 PILH STL SPRING GROUND FLAT FR SEC
43. Substrate Removal a Remove the three truss head screws holding the ground springs and remove the springs b Unsolder the input resistor 56 Q that connects the front panel input connector to the substrate input pin Unsolder the gate lead of Q1445 for CH 1 01335 for CH 2 from the output pin on the substrate d Remove the three frontmost pan head screws securing the spring clips to the top of the cam switch NOTE Press down on the cam switch plastic top plate when removing the spring clip to prevent the plate from separating from the switch bearings e Push the substrate away from the housing but do not touch the surface of the substrate handle by the edges only f Lift out the substrate 2 Attenuator Substrate Replacement a Set the substrate into position pins lined up with the sockets Check the front to back position of the substrate for proper alignment If not aligned properly remove the substrate and re insert b Push the substrate into the sockets Attempting to force the substrate back and forth while the pins are inserted may break the substrate Resolder the input resistor to the substrate input pin d Resolder the gate lead of Q1445 for CH 1 Q1335 for CH 2 to the output pin of the substrate e Reinstall the ground springs Cam Switch Contact Removal and Replacement NOTE If cam switch contacts are suspected of being intermittent the following checks are recommended prior
44. Turn the power module off before inserting the plug in otherwise damage may occur to the plug in circuitry 1878 2296 2 Fig 1 1 Plug in installation and removal 1 1 Operating Instructions SC 504 CONTROLS AND CONNECTORS The SC 504 is fully calibrated and ready for use when received The functions of the controls and connectors should be reviewed before use Refer to Fig 1 2 1 TRIGGERING SLOPE This switch selects the polarity of the triggering signal that starts the sweep 2 TRIGGERING LEVEL This contro selects the amplitude point on the triggering signal at which the sweep is triggered 3 MODE AUTO When depressed the sweep is started by the applied trigger signal In the absence of an adequate triggering signal the sweep free runs and provides a bright reference trace 4 MODE NORM When this pushbutton is depressed the sweep is initiated by the applied triggering signal In the absence of an adequate triggering signal there is no trace 5 MODE SGL SWP RESET When this pushbutton is depressed momentary contact switch the sweep will trigger only once in the single sweep mode After the sweep is displayed further sweeps cannot be presented until the button is depressed again to rearm the sweep 6 CPLG AC When this pushbutton is depressed triggering signals are capacitively coupled to the input of the trigger generatorcircuit The dc component is rejected and the signals below approximately
45. VAR TRIG HOLDOFF controls the variable sweep rate or the variable trigger holdoff a Variable sweep rate This position provides for continuously variable sweep rates between the calibrated settings of the SECONDS DIV switch b Variable trigger holdoff This position provides continuously variable trigger holdoff 13 SECONDS DIV This switch selects the sweep rate and the external triggering mode for the external horizon tal amplifier The CAL contro must be rotated fully clockwise for the calibrated sweep rates 14 Ground connection Operating Instructions SC 504 CONTROLS AND CONNECTORS Fig 1 2 Controls and connectors Operating Instructions SC 504 15 POSITION This control positions the display horizontally on the crt except in the XY mode 16 CAL 0 6 V This jack outputs the positive going 0 6 V square wave at approximately 1 kHz for calibration and probe compensation 17 EXT TRIG This is the input bnc connector for external triggering signals 18 Input connector This bnc connector accepts the vertical signal input 19 DC GND AC INT DC This switch selects the type of signal coupling it to the vertical amplifier DC In this position the front panel input connector to the input amplifier is dc coupled GND This position disconnects and grounds the input of the vertical amplifier AC In this position the signals from the front panel bnc connector capacitively coupled to the
46. VOLTS DIV 10 CH 2 DC GND AC INTDC GND a Connect a 20 MHz 2 V peak to peak signal from a leveled sine wave generator through 50 Q coaxial cable with a 50 Q termination to the CH 1 input connector b CHECK that CH 2 displays an amplitude of 0 2 major division or less 2 11 Specification and Performance 5 504 c Disconnect the generator signal from the CH 1 connector and reconnect to the CH 2 input connector d Change the DISPLAY switch to CH 1 and the CH 1 VOLTS DIV switch to 10 e Change the CH 1 DC GND AC INT DC switch to the GND position and the CH 2 DC GND AC INT DC Switch to the DC position f Change the CH 2 VOLTS DIV switch to 2 9 CHECK that CH 1 displays no more than 0 2 major graticule division of signal h Disconnect all cables and return the front panel controls to the preliminary settings 7 Check for Input Related Signal Isolation The front panel control settings are the same as the preliminary settings with the following exceptions CH 1 VOLTS DIV 10 CH 1 DC GND AC INT GND CH 2 VOLTS DIV 5m Connect a 10 MHz 5 V peak to peak signal from a leveled sine wave generator through a 50 Q coaxialcable with a 50 Q termination to the CH 1 input connector b CHECK that CH 2 displays more than 0 1 major graticule division of amplitude c Disconnect the generator signal from the CH 1 connector and reconnect to the CH 2 input connector d Change the DISPLAY sw
47. a means for applying an external signal to the horizontal amplifier for this type of display NOTE Do not exceed the horizontal scan area of the graticule in the X Y mode of operation This mode can be used to measure phase differences of signals up to about 50 kHz in frequency Above this frequen Cy the inherent phase in the system makes phase measurement difficuit Operating Instructions SC 504 BASIC OSCILLOSCOPE APPLICATIONS Phase Difference Measurement This phase difference measurement is limited by the frequency of the vertical system Use the vertical input channels when comparing the phase of two or more signals of the same frequency 1 Set the CH1 and CH2 DC GND AC INT DC switches to either AC or DC 2 Set the DISPLAY switch to either ALT or CHOP position Use the ALT position for high frequency above 30 MHz signals and the CHOP position for low frequency below 30 MHz signals 3 Set the TRIGGERING SOURCE switch to CH 1 4 Connect the reference signal to the CH 1 input connector and the comparison signal to the CH 2 input connector Use coaxial cables or probes which have equal time delay to connect the signals to the input connectors If the signals are of opposite polarity due to 180 phase difference switch the DISPLAY switch to 1 2 position to invert the CH 2 signal 5 Set the channel VOLTS DIV switches and the CAL variable VOLTS DIV controls for equal displays of about five divisions in ampli
48. f E M CM a 5 e 09 SECONDS OIV o 204 RAO Tor Son Cw 62 E E L cua ty Se 7 asv p tao Sv Test 9 p doy SND Sor iow 37 dm zov s TH I 52 I E 8 Tom REV 1979 2756 33 H T 56504 PARTIAL AL BOARD SWEEP GENERATOR lt gt HORIZONTAL DEFLECTION BOARD Table 8 7 INDEX TO COMPONENT LOCATIONS ON SCHEMATIC CKT GRID CKT GRID CKT GRID CKT GRID LOC NO LOC NO LOC NO LOC C4118 12 CR4227 H4 84112 J3 R4242 J6 C4122 J2 CR4329 H4 R4113 J4 R4243 H5 C4124 33 CR4345 F3 R4115 K2 R4245 F6 C4129 Ji R4127 K2 R4248 E3 C4130 J2 R4130 K2 R4249 D6 4131 J1 L4212 D7 R4132 J1 R4336 03 C4135 J5 14318 08 R4133 J2 R4339 D6 C4140 J6 14325 D7 R4135 J2 R4340 D5 C4142 J6 14330 08 R4136 J5 R4341 D4 C4144 5 R4139 K5 R4342 F4 C4212 D7 R4142 K5 R4344 D5 C4232 D8 Q4110 J4 R4143 J6 R4346 D3 C4233 D6 Q4125 J2 R4145 K5 R4348 D3 C4234 H3 Q4126 H3 R4212 D7 C4236 Q4132 J2 R4216 J3 C4240 F2 Q4137 J5 R4217 K3 C4245 E6 Q4145 J5 R4218 K3 1160 C4247 D6 Q4147 H5 R4220 C4310 08 Q4230 H4 R4221 H4 C4312 07 R4223 H3 04345 E4 C4323 07 R4224 J1 C4347 R1155 C5 R4225 F3 R1160 C4 R4227 F4 VR4120 J3 R1167 B4 R4228 F4 R1168 C4 R4233 CR41
49. or a high 24 0 V which does not intensify The ECL circuit operates between 5 V and ground The input resistance is 1 5 kQ REV A MAR 1978 Sweep A Gate Out This positive going gating signal is applied to connec tor 26A ground reference at contact 25A The active level is less than 5 volt through 1 during the sweep and 5 volts through 6 kQ otherwise Reset In An external ground can be applied to contact 21A to reset the gate generator in the single sweep mode Ready Light Out When the gate generator is reset through contact 21A an arming signal is applied to contact 20A and can be used at the operator s discretion 5 volts is available for use with the Remote Ready Light 5 Volts Available at contact 19A REV A MAR 1978 Maintenance and Interfacing Information SC 504 Repackaging Information If the Tektronix instrument is to be shipped to a Tektronix Service Center for service or repair attach a tag showing owner with address and the name of an individual at your firm that can be contacted Include complete instrument serial number and a description of the service required Save and re use the package in which your instrument was shipped If the original packaging is unfit for use or not available repackage the instrument as follows Surround the instrument with polyethylene sheeting to protect the finish of the instrument Obtain a carton of corrugated cardboard of the correct carton streng
50. preamplifier circuits provide the initial stages of signal amplification The outputs from these two hybrids provide triggering signals and signals to the trigger interface amplifier and horizontal deflection amplifier The CH 1 and CH 2 CAL controls provide continuously variable deflection factors between the calibrated settings of the VOLTS DIV switch In the 1 2 position of the DISPLAY switch the and signal lines within the channel 2 preamplifier are inverted Channel Switching Transistor gates inside the hybrid circuits couple either the channel 1 or channel 2 preamplifier signals to the vertical amplifier These gates are controlled by the channel switching multivibrator and the DISPLAY switch to provide the various vertical display modes A differential amplifier composed of Q1455 Q1555 and associated circuitry controls both channel one and channel two switching The DISPLAY switch when set at either the CHOP or ALT positions causes U2170 to operate as a flip flop mutlivibrator for channel switching This flip flop action turns on Q1455 or Q1555 which causes pin 1 of either HY1430 or HY1530 to go high thus selecting the switching mode see Fig 4 2 When the DISPLAY switch is in the CHOP position the channel switching multivibrator free runs and outputs a positive going signal to the Z Axis circuitry causing the crt to blank during the switching time This signal also causes U2170 to toggle changing output states thu
51. screwdriver into the holes in the tabs 22 and gently pry upwards using the sloping surfaces of the top plate as a fulcrum d Lift out the substrate Preamplifier Hybrid Substrate Replacement Setthe substrate into position pins lined up with the Sockets Check the front to back position of the substrate for proper alignment If not aligned properly remove the substrate and re insert b Push the substrate into the sockets and then towards the switch so that the substrate seats against the top cover of the cam switch CAUTION Attempting to force the substrate back and forth while the pins are inserted may break the substrate Attach the two spring clips to the top of the cam switch using the two truss head screws Vertical Switch Boards Removal and Replacement 1 Vertical Switch Board Removal a Remove the two truss head screws that secure the two frontmost spring clips to the top of the cam switch and lift out the clips 5 4 b Push the board 23 away from the housing and lift out the board 2 Vertical Switch Board Replacement a Line up the pins with the sockets and set the board into position b Push the board pins into the sockets then push the board against the top cover of the cam switch engaging the two plastic locating pins Attach the spring clips and secure them to the top of the cam switch with the truss head screws Attenuator Substrates Removal and Replacement 1 Attenuator
52. switch assemblies Do not use cotton or other fiber type material to wipe the contacts and contact pads of the switch assemblies 1 Assembled Cam and Attenuator a Spray switch area with a 5 solution of Kelite spray white using an equal amount of ammonia non sudsing non soapy type and then rinse thoroughly by spraying with distilled water b Spray switch area with isopropyl alcohol and let set for 10 seconds Blow with compressed air while rotating the switch through all positions NOTE Cam switch contacts do not require lubrication 2 Disassembled Cam and Attenuator Clean substrates with a freon based non detergent cleaner 3 Switch Hanger Thoroughly rinse the switch hanger with isopropyl alcohol and allow to dry Allied Kelite Products Division of the Richardson Co Los Angeles Calif 5 5 Maintenance and Interfacing Intormation SC 504 Using the Rear Interface The tabbed foldout pages labled Waveforms and Rear Board Connections Fig 8 2 and Fig 8 3 refer to the following information External Z Axis In An external Z axis input signal can be applied to contact 24A center coaxial conductor and 23A ground to turn the crt beam on or off A 5 V signal will unblank the crt beam a 5 V signal will blank the crt beam The input resistance is 1 5 Ramp Out Interface contact 18A supplies a 0 V to 10 V positive going ramp that is coincident with the sweep The load conn
53. the voltmeter to about 2 V full scale b Set the DISPLAY switch to XY and position the beam the crt viewing area using the front panel POSITION controls the INTEN control fully clockwise c ADJUST R1595 Beam Current for a voltmeter reading between 0 39 V and 0 41 V d Disconnect the voltmeter and turn the INTEN control to its midrange position avoid possible damage to the crt phosphor do not allow a bright spot to remain stationary for an extended period ot time within the viewing area Adjustment Procedure SC 504 4 Adjust Crt Astigmatism a Position the crt spot to the center of the crt viewing area with the horizontal and vertical POSITION controls Reduce the spot intensity to prevent crt phosphor damage b Rotate the FOCUS control fully counterclockwise c ADJUST R1590 Astig located on the Main Board for the roundest crt spot d Set the FOCUS control for the best focused spot e If necessary reduce the spot intensity to prevent crt phosphor damage 5 Adjust Crt Trace Rotation a Set the SECONDS DIV switch to 5 m and the DISPLAY switch to CH 2 b Position the trace to the center horizontal graticule line c ADJUST R1585 located on the Main Board until the crt trace is parallel to the center horizontal graticule line 6 Adjust Crt Geometry NOTE The geometry adjustment will cause some change in sweep timing a Connect 0 5 ms time markers from the pr
54. time marks can be time mark can be generated simultan generated at a time eously 181 181 Multiple time marks 184 TG 501 Trigger output l 184 Separate trigger slaved to market pulses of 1 and 0 1 output from 5 sec sec 10 1 and 0 1 through 100 ns ms 10 and 1 us time mark can be generated at a time 2901 TG 501 Trigger output 2901 Separate trigger slaved to marker output from 5 sec through 100 ns One time mark can be generated at a time pulses from 5 sec to 0 1 ps Multiple time marks can be generated simultan eously NOTE All TM 500 REV JUN 1978 ator outputs are short proof TM 500 plug in instruments require TM 500 Power Module MANUAL CHANGE INFORMATION 5 504 CHANGE REFERENCE __ 1 amp 78___ commited 1o nce 070 2296 00 pate 4 21 78 TEXT CORRECTIONS TEKTRONIX PRODUCT EFF ALL SN Page 1 2 CHANGE item 13 SECONDS DIV to read This switch selects the sweep rate The CAL control must be turned fully clockwise for calibrated sweep rates Page 1 4 CHANGE item 21 VOLTS DIV to read This switch selects the vertical deflection factor in a l 2 5 sequence variable control must be rotated fully clockwise for the indicated deflection factor When using a 1X probe or no probe read the deflection factor through the knob skirt window labeled 1X however when a 10X probe is used on the input
55. to replacement or cleaning a If there is evidence of elastomer contact contamina tion replace the switch hanger b If there is evidence of tears or cuts in elastomer replace the switch hanger Make certain elastomer contacts are properly seated in the cam follower If not carefully re seat the elastomer contact 1 Cam Switch Contact Removal 25 a Remove the substrates to expose the switch con tacts refer to substrate removal steps b Insert a long nose tweezers between the contact assembly and the top cover of the cam switch Push down and out on the contact assembly with the tweezers to disengage the top of the contact Lift the contact assembly out CAUTION i To prevent contamination do not touch the switch contacts 2 Cam Switch Contact Replacement Grasp the contact assembly with the tweezers and set the long pointed plastic pins of the assembly into the two holes located on the etched circuit board REV A MAR 1978 Maintenance and Interfacing Information SC 504 b Push the contactassembly towards the switch drum while guiding the short blunt plastic pins of the assembly into the top plate grooves of the cam switch Push on the contact assembly until the pins snap into position d Rotate the cam switch to check for the proper alignment of the newly installed switch contact assembly Cleaning Information Do not use freon or other strong cleaners on the elastomer
56. 0 60 386 3160 00 1 SUPPORT CRT FRONT 80009 386 3160 00 61 386 3134 03 1 SUBPANEL FRONT PAINTED GRAY 80009 386 3134 03 ATTACHING PARTS 62 213 0123 00 4 SCREW TPG TF 6 32 X 0 375 SPCL 80009 213 0123 00 63 213 0282 00 1 THUMBSCREW 0 375 X 10 7M4 9 525 OD PLASTIC 0000 213 0282 00 64 255 0334 00 FT PLASTIC CHANNEL CUT FIT 11897 122 37 2500 65 407 1623 00 1 BRACKET PANEL REAR 80009 407 1623 00 ATTACHING PARTS 66 211 0507 00 3 SCREW MACHINE 6 32 X 0 312 INCH PNH STL 83385 67 351 0449 00 2 GUIDE CKT CARD 80009 351 0449 00 ATTACHING PARTS FOR EACH 68 211 0062 00 2 SCREM MACHINE 2 56 X 0 312 INCH RDH STL 83385 OBD 69 210 0405 00 2 NUT PLAIN HEX 2 56 X 0 188 INCH BRS 73743 2 12157 402 70 210 0053 00 2 WASHER LOCK INTL O 092 ID X 0 175 OD STL 83385 OBD seus Sem INTERFACE SEE EPL 365 L X 0 25 PH BRZ GOLD PL 22526 47357 80009 386 3135 01 72 131 0608 00 73 386 3135 01 ATTACHING PARTS 74 213 0192 00 2 SCR TPG THD FOR 6 32 X 0 50 INCH PNH STL 87308 75 211 0504 00 2 SCREW MACHINE 6 32 X 0 25 INCH PNH STL 83385 OBD 76 386 3671 00 2 SUPPORT PLUG IN 80009 386 3671 00 alas 77 220 0625 00 2 NUT SHEET SPR 6 32 THD STL 78553 8090 632 24 78 386 1316 00 1 SUPPORT CRT REAR PLASTIC 80009 386 1316 00 79 136 0679 00 1 SOCKET ASSY CRT 80009 136 0679 00 80 252 0562 00 PLASTIC CHANNEL 0 100 X 0 120 POLYETHYLENE 06229 OBD
57. 0 1 EXTENSION SHAFT 2 813 L X 0 125 STEP OD STL 80009 384 0289 00 41 200 1809 00 1 COVER VAR RES HIGH VOLTAGE 80009 200 1809 00 42 343 0002 00 1 CLAMP LOOP 0 188 INCH DIA 95987 3 16 6 ATTACHING PARTS 43 211 0008 00 1 SCREM MACHINE 4 40 X 0 25 INCH PNH STL 83385 OBD 44 210 0851 00 1 WASHER FLAT 0 119 ID X 0 375 INCH OD STL 12327 OBD gt 45 1 RES VAR NONWIR SEE R3100 EPL ATTACHING PARTS 46 210 0583 00 1 NUT PLAIN HEX 0 25 32 X 0 312 INCH BRS 73743 2 20224 402 47 210 0940 00 1 WASHER FLAT 0 25 ID X 0 375 INCH OD STL 79807 OBD lt i h ana 48 1 RES VAR NONWIR SEE R1200 EPL ATTACHING PARTS 49 210 0583 00 1 NUT PLAIN HEX 0 25 32 X 0 312 INCH BRS 73743 2x20224 402 50 210 0940 00 1 5 0 25 ID X 0 375 INCH OD STL 79807 OBD 51 361 0143 00 1 WASHER KEY 0 281 ID X 0 562 INCH OD 80009 361 0143 00 52 343 0013 00 1 CLAMP LOOP 0 375 INCH DIA 95987 3 8 6B ATTACHING PARTS 53 211 0008 00 1 SCREW MACHINE 4 40 X 0 25 INCH PNH STL 83385 OBD 54 210 0851 00 1 WASHER FIAT 0 119 ID X 0 375 INCH OD STL 12327 OBD canos 55 333 2327 00 1 PANEL FRONT SC504 80009 333 2327 00 ATTACHING PARTS 56 211 0537 00 1 SCREW MACHINE 6 32 X 0 375 INCH TRH STL 83385 OBD M 57 2 LAMP LED SEE 051110 AND 061115 EPL 58 337 2203 00 1 SHLD IMPLOSION BLUE POLYCARBONATE 80009 337 2203 00 59 214 1700 00 1 SPRING FLAT 73MM X 3 2MM PH BRS 0000 214 1700 0
58. 03 00 131 1003 00 CONNECTOR BODY CKT CD MT 3 PRONG 80009 131 1003 00 131 1003 00 CONNECTOR BODY CKT CD MT 3 PRONG 80009 131 1003 00 108 0245 00 COIL RF 3 9UH 80009 108 0245 00 108 0245 00 COIL RF 3 9UH 80009 108 0245 00 108 0240 00 COIL RF 820UH 76493 B5147 108 0245 00 COIL RP 3 9UH 80009 108 0245 00 108 0422 00 COIL RF 80UH 80009 108 0422 00 108 0245 00 COIL RP 3 9UH 80009 108 0245 00 108 0245 00 COIL RF 3 9UR 80009 108 0245 00 108 0245 00 COIL RP 3 9UH 80009 108 0245 00 108 0245 00 COIL RF 3 9UH 80009 108 0245 00 108 0829 00 COIL TUBE DEFL FIXED TRACE ROTATION 80009 108 0829 00 108 0740 00 TRANSFORMER RF 225NH 80009 108 0740 00 108 0245 00 COIL RF 3 9UH 80009 108 0245 00 108 0740 00 TRANSFORMER RF 225NH 80009 108 0740 00 108 0245 00 COIL RF 3 9UH 80009 108 0245 00 108 0245 00 80009 108 0245 00 108 0245 00 80009 108 0245 00 108 0245 00 80009 108 0245 00 108 0245 00 COIL RF 3 9UH 80009 108 0245 00 108 0245 00 COIL RF 3 90H 80009 108 0245 00 108 0245 00 COIL RF 3 9UH 80009 108 0245 00 108 0245 00 COIL RF 3 90 80009 108 0245 00 108 0245 00 COIL RF 3 9UH 80009 108 0245 00 108 0245 00 COIL RF 3 9UH 80009 108 0245 00 108 0245 00 COIL RF 3 90H 80009 108 0245 00 108 0245 00 COIL RF 3 9UH 80009 108 0245 00 108 0245 00 COIL RF 3 9UH 80009 108 0245 00 108 0331 00 COIL RF 0 75UH 80009 108 0331 00 108 0331 00 COIL RF 0 75UH 80009 108 0331 00 108 0331 00 COIL RF 0 750 80009 108 0331 00 151 0341 00 TRANSISTOR SILICON NPN 072
59. 03145 8 R3215 C2 TP3136 J5 CR3124 08 03224 R3220 D4 TP3520 H5 126 E7 03225 C4 R3222 C3 TP3521 H5 CR3128 D7 03234 R3223 C4 CR3222 C3 03235 6 R3224 C4 03120 CR3235 5 03236 17 R3226 C3 03125 E7 CR3244 J4 03237 16 3227 C4 03148 H7 CR3248 03520 4 R3228 C4 03238 14 CR3520 5 03522 H4 R3229 2 CR3521 F4 03523 H4 R3235 46 3120 04 CR3525 5 03524 F5 R3244 44 3139 25 nen 5 kok E 3524 H5 EXT TRIG 55 53315 SHOWN INT POSITION Bi FF uci TUS e se s Ws t e je UNE Fena ELE ENN ven INT L casse 2348 1 mp P325 LET M Bis 33260 3200 riii 15 ERE de 2 t s eT emp E BRO son 73325 Qa a d n 30K as 148 INTERFACE TRIGGER 148 158 OF MAINFRAME CHI TRIGGER 2 TRIGGER REET R3250 oas Q gt 55 TO gt 93158 1 DIAG MODE To U3I58 4 Dias 5 MYBRID PACK wYs230 334 E M store see HOLD OFF RESET 93238 45 PEAK DETECTOR REAR UNE TRIGGER RMS 6 ua
60. 0481 03 FXD FILM 1M OHM 0 25 0 125W 8233 321 0618 03 11 250 OHM 0 25 0 125W 8235 321 0891 03 FXD FILM 800K OHM 0 25 0 125W R240 317 0510 00 FXD CMPSN 51 OHM 5 0 125W R241 315 0105 00 FXD CMPSN 1M 5 0 258 R243 317 0560 00 RES FXD CMPSN 56 OHM 5 0 125W R1110 315 0181 00 FXD CMPSN 180 OHM 5 0 2SW R1115 321 0927 07 FXD FILM 125 OHM 0 1 0 125W R1116 321 0602 00 FXD FILM 3 908K OHM 0 25 0 125W R1119 315 0102 00 FXD CMPSN 1K OHM S 0 25W R1140 315 0620 00 XD CMPSN 62 OHM 5 0 25W R1148 315 0102 00 FXD CMPSN 1K 5 0 25 R1149 315 0103 00 FXD CMPSN 10K OEM 5 0 25W R1150 315 0162 00 FXD CMPSN 1 6K OEM 5 0 25W R1152 311 1803 00 20 OHM 10 1W R1155 311 1239 00 VAR 2 5 OHM 10 0 50W R1160 311 1248 00 VAR NONWIR 500 OHM 10 0 50W 1166 315 0242 00 FXD CMPSN 2 4K OHM 5 0 25W R1167 311 1248 00 VAR NONWIR 500 OHM 10 0 50W R1168 321 0193 00 OHM 1 0 125W R1169 311 1244 00 VAR NONWIR 100 OHM 10 0 50W R1200 311 0546 00 RES VAR NONWIR 10K OHM 209 0 75W R1210 315 0622 00 FXD CMPSN 6 2K OHM 51 0 25W 1211 315 0622 00 FXD CMPSN 6 2K OHM 5 0 25W R1215 315 0102 00 FXD CMPSN 1K OHM 5 0 25W R1216 315 0472 00 FXD CMPSN 4 7K OHM 5 0 25W R1217 315 0104 00 5 100 OHM 5 0 25W R1218 315 0623 00 FXD CMPSN 62K OHM 5 0 25W R1220 315 0244 00 FXD CMPSN 240K OHM 5 0 25W R1223 321 0510 07 FXD FILM 200 MEG OHM 0 1 0 125W
61. 09 PICKENS SC 29671 MILWAUKEE WI 53204 DALLAS TX 75222 CITY OF INDUSTRY CA 91745 PHOENIX AZ 85036 BERKELEY HEIGHTS NJ 07922 MOUNTAIN VIEW CA 94042 HAWTHORNE 90250 DOVER NH 03820 WATERTOWN 02172 NEWBURY PARK 91320 ANAHEIM 92806 105 ANGELES 90039 VIENNA 22180 MINERAL WELLS TX 76067 RIVERSIDE CA 92507 MUSKEGON MI 49445 STATE COLLEGE PA 16801 LATHAM NY 12110 PAULS VALLEY OK 73075 NORTH ADAMS MA 01247 ST LOUIS MO 63107 FORT DODGE IA 50501 ERIE PA 16512 FULLERTON CA 92634 OXFORD NC 27565 PHTLADELPHIA PA 19108 COMPTON CA 90224 BEAVERTON OR 97077 MORRISTOWN NJ 07960 FULLERTON CA 92634 CHICAGO IL 60630 INDIANAPOLIS IN 46206 COLUMBUS NE 68601 Replaceable Electrical Parts SC 504 Tektronix Mfr PartNo Dscont Name amp Description Code Mfr Part Number 670 5109 00 BOARD ASSY MAIN 80009 670 5109 00 2 670 5110 00 BOARD ASSY FOCUS AND INTENSITY 80009 670 5110 00 670 5111 00 BOARD ASSY TRIGGER 80009 670 5111 00 670 5112 00 BOARD ASSY HORIZONTAL 80009 670 5112 00 5 670 5113 00 BOARD ASSY HIGH VOLTAGE 80009 670 5113 00 6 670 5114 00 BOARD 55 80009 670 5114 00 670 5115 00 BOARD ASSY TRIGGER SWITCH 80009 670 5115 00 9 670 5116 00 BOARD ASSY VERTICAL SWITCH 80009 670 0116 00 116
62. 150MA 07910 1N4152 CR3374 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3380 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3466 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3468 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3475 152 0066 00 SEMICOND DEVICE SILICON 400V 750MA 80009 152 0066 00 CR3494 152 0066 00 SEMICOND DEVICZ SILICON 400V 750MA 80009 152 0066 00 CR3496 152 0066 00 SEMICOND DEVICE SILICON 400V 750MA 80009 152 0066 00 CR3520 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3521 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR3525 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR4122 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR4224 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR4227 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 4329 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 14152 CR4345 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 051110 150 1029 00 53184 XC209G 161115 150 1029 00 53184 XC209G 061620 150 0111 00 53944 AlB 3 261621 150 0111 00 LAMP GLOW NEON 1 2MA 53944 1 3 3478 159 0022 00 FUSE CARTRIDGE 3AG 1A 250V PAST BLOW 71400 AGC 1 F3482 159 0025 00 FUSE CARTRIDGE 3AG 0 5A 250V FAST BLOW 71400 AGC 1 2 Replaceable Electrical Parts SC 504 Ckt F3488 HVN1590 HY1320 1430 HY1520 HY1530 HY3230 2100 3200 31420 31520 33
63. 151 1042 00 SEMICOND SE MATCHED PAIR FET Q3524 PAGE 5 OF 8 propuct SC 504 878 pAre 5721 78 CHANGE DESCRIPTION Page 7 11 REMOVE all information associated with circuit numbers R210 through R243 15 consecutive lines ADD footnote indicator to 152 0 footnote at bottom of page lpurnished as a unit with 51160 CHANGE TO R1167 311 1237 00 RES VAR NONWIR 1K OHM 10 0 5W Page 7 12 CHANGE TO R1370 315 0911 00 RES FXD CMPSN 910 52 0 25 Page 7 16 CHANGE TO R3178 315 0510 00 RES FXD CMPSN 51 0HM 52 0 25W REMOVE R3180 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W Page 7 17 CHANGE 83322 321 0071 00 RES FXD FILM 53 6 OHM 1 0 125W R3324 ADD 83374 321 0260 00 RES FXD FILM 4 99K OHM 1Z 0 125W Page 7 18 CHANGE TO 84112 321 0271 00 RES FXD FILM 6 49 OHM 12 0 125W R135 321 0159 00 RES FXD FILM 442 OHM 1Z 0 125W R4136 Page 7 19 CHANGE TO R4227 315 0301 00 RES FXD CMPSN 300 OHM 5 0 25W 84342 321 0273 00 RES FXD FILM 81 OHM 1Z 0 125W From To 1130 1160 51160 _ 5554 CHANGE REFERENCE 1 478 DATE 9 21 78 DESCRIPTION Page 7 19 CHANGE TO From S3512A From S3512B From S3512C ADD Footnote at bottom of page lyurnished as a unit with R1152 SCHEMATIC CHANGES DIAGRAM 1 CHANNEL 1 PREAMPLIFIER CHANGE R3178 to 51 ohm REMOVE C3182 22 PF and symbol
64. 188 33200 33290 23325 33380 33382 33390 L1140 11141 11270 11278 11292 11358 L1359 11564 11566 12156 12247 12277 12347 13170 13172 13229 13270 13329 13334 13339 13340 13342 14212 14318 14325 14330 LR2421 LR2431 LR2433 01116 01210 21211 Tektronix Serial Model PartNo Dscont Name amp Description Code Mtr Part Number 159 0029 01 FUSE CARTRIDGE BUSSMAN ONLY 71400 BUSS MDL 3 10 152 0634 00 VOLTAGE MULTR HV MULTR 6 7KV IN 10KV OUT 80009 152 0634 00 307 0562 00 RES FI ATTENUATOR 80009 307 0562 00 155 0161 00 MICROCIRCUIT LI VERTICAL PREAMP GAIN SW 80009 155 0161 00 307 0562 00 RES NTWK FXD FI ATTENUATOR 80009 307 0562 00 155 0161 00 MICROCIRCUIT LI VERTICAL PREAMP GAIN SW 80009 155 0161 00 307 0563 00 RES NTWK FXD FI HORIZONTAL TRIGGER 80009 307 0563 00 131 0955 00 CONNECTOR RCPT FEMALE W HARDNARE 05091 31 279 131 0955 00 CONNECTOR RCPT FEMALE W HARDWARE 05091 31 279 131 1003 00 CONNECTOR BODY CKT CD MT 3 PRONG 80009 131 1003 00 131 1003 00 CONNECTOR BODY CKT CD MT 3 PRONG 80009 131 1003 00 131 1003 00 CONNECTOR BODY CKT CD MT 3 PRONG 80009 131 1003 00 131 0955 00 CONNECTOR RCPT BNC FEMALE W HARDWARE 05091 31 279 131 1003 00 CONNECTOR BODY CKT CD MT 3 PRONG 80009 131 1003 00 131 1003 00 CONNECTOR BODY CKT CD MT 3 PRONG 80009 131 1003 00 131 1003 00 CONNECTOR BODY CKT CD MT 3 PRONG 80009 131 10
65. 1979 2296 28 HYM1590 111595 54 2296 16 Table 8 2 INDEX COMPONENT LOCATIONS SCHEMATIC CKT GRID GRID CKT CKT GRID No Loc NO Loc NO Loc 1310 F2 K3385 ES R1326 K6 92166 Ci3M F4 R1327 J6 R2172 H7 1320 F2 91335 92175 H7 1330 11358 B6 R1339 F4 R2176 H7 1340 11358 7 R1340 F4 R2182 6 Ci342 J5 12277 F6 41 J5 82183 06 1345 K2 R1342 F4 R2185 E5 C1349 K2 R1343 F4 R2186 E6 C1350 Ki 91255 12 R1344 45 82188 E7 1355 B6 01335 F3 81345 K2 R2189 07 C1357 B7 Q1335B F3 R1346 K2 R2190 D7 61425 K2 01455 K7 R1347 R2192 H7 C1429 Q1555 L7 R1348 R2194 61448 L4 02162 F7 R1349 92195 E7 1457 K7 02165 F8 81350 12 R2268 F7 C2166 H7 02180 E7 R1351 L3 R2273 F7 2183 6 02280 D7 R1352 12 R2275 H7 3290 5 Q3280 ES R1355 J6 R2497B F5 R1356 K6 R3282 E5 CR1252 L2 R1166 M2 R1357 L3 CR1330 F2 R1259 L1 R1365 J6 51325 B2 CR1457 17 R1300 R1417 5 S1325B C1 CR3284 5 R1310 E2 R1431 K2 2375 E8 1311 R1432 K2 3385 E6 BES B Reo HY1320 1325 Wine M i U2170 F7 INPUT 3
66. 1K OHM 51 0 25W 01121 CB1025 R1622 315 0226 00 RES FXD CMPSN 22M OHM 5 0 25W 01121 2265 Replaceable Electrical Parts SC 504 Tektronix Serial Model No Mfr PartNo Dscont Name amp Description Code Part Number R2110 311 0349 00 RES NONWIR 2 MEG OHM 0 5W 12697 381 CM30940 R2120 315 0102 00 RES PXD CMPSN 1K OHM 5 0 25W 01121 1025 R2121 315 0182 00 RES FXD CMPSN 1 8K OHM 5 0 25W 01121 1825 R2127 315 0104 00 RES FXD CMPSN 100K OHM 5 0 25W 01121 1045 R2130 321 0286 00 RES FXD FILM 9 31K OHM 1 0 125W 91637 MFF1816G93100F R2132 315 0101 00 RES FXD CMPSN 100 OHM 51 0 25W 01121 1015 R2135 315 0102 00 RES FXD CMPSN 1K OHM 5 0 25W 01121 1025 82137 311 1423 00 RES VAR NONWIR 20 OHM 20 0 50W 73138 72 01 0 200 R2140 322 0617 00 RES FXD FILM 47 7 1 0 258 19701 MF52C47R70F R2142 321 0257 00 RES FXD FILM 4 64K OHM 1 0 125W 91637 MFF1816G46400F R2145 315 0161 00 RES FXD CMPSN 160 OHM 5 0 25W 01121 CB1615 R2158 315 0362 00 RES PXD CMPSN 3 6K OHM 5 0 25W 01121 3625 82163 315 0333 00 RES PXD CMPSN 33K OHM 5 0 25W 01121 CB3335 R2166 315 0472 00 RES FXD CMPSN 4 7K 5 0 25 01121 4725 R2172 315 0222 00 RES FXD CMPSN 2 2K OHM 5 0 25W 01121 2225 82175 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W 01121 1035 2176 315 0303 00 RES FXD CMPSN 30K OHM 51 0 25W 01121 CB3035 R2182 315 0132 00 RES FXD CMPSN 1 3K OHM 5 0 25W 01121 1325
67. 2 00 RES PXD CMPSN 1K OHM 5 0 25W 01121 1025 R1510 315 0361 00 RES PXD CMPSN 360 OHM 5 0 25W 01121 CB3615 R1531 317 0330 00 RES FXD CMPSN 33 5 0 125 01121 3305 01121 BB3305 01121 CB2225 81532 317 0330 00 FXD CMPSN 33 OHM 5 0 125W 81548 315 0222 00 81549 315 0472 00 01121 CB4725 81554 315 0562 00 RES FXD CMPSN 5 6K OHM 5 0 25W 01121 5625 1556 315 0360 00 FXD CMPSN 36 OHM 5 0 25W 01121 3605 81557 321 0054 00 RES PXD FILM 35 7 5 0 1258 91637 MFF1816G35R70F 81560 311 1947 00 RES VAR NONWIR 5K OHM 20 0 25W 12697 41722 R1565 311 1245 00 RES VAR NONWIR 10K OHM 10 0 50W 73138 72 28 0 81570 311 1245 00 RES VAR NONWIR lOK 10 0 508 73138 72 28 0 81576 315 0622 00 RES FXD CMPSN 6 2K OHM 5 0 25W 01121 CB6225 81578 315 0102 00 RES PXD CMPSN 1K OHM 5 0 25W 01121 1025 81580 311 1242 00 RES VAR NONWIR 200K OHM 10 0 50W 01121 F4A204 81585 311 1245 00 RES VAR NONWIR 10K 10 0 50 73138 72 28 0 81590 311 1242 00 RES VAR NONWIR 200K OHM 10 0 50W 01121 4 204 1595 311 1246 00 RES VAR NONWIR 50K OHM 10 0 50W 02111 63 503 602 Rl610 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W 01121 CB1035 81614 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W 01121 CB1015 Rl615 308 0760 00 RES FXD WW 0 2 OHM 10 2W 91637 RS2B162ER2000K R1620 315 0101 00 RES FXD CMPSN 100 5 0 25 01121 1015 Rl621 315 0102 00 RES PXD CMPSN
68. 2 315 0473 00 RES FXD CMPSN 47K OHM 5 0 25W 01121 4735 R3165 315 0104 00 RES FXD CMPSN 100K OHM 5 0 25W 01121 1045 R3168 315 0102 00 RES FXD CMPSN 1K OHM 51 0 25W 01121 1025 R3174 315 0102 00 RES FXD CMPSN 1K OHM 51 0 25W 01121 CB1025 R3178 315 0560 00 RES PXD CMPSN 56 OHM 5 0 25W 01121 CB5605 R3180 315 0101 00 RES PXD CMPSN 100 OHM 5 0 25W 01121 1015 R3184 315 0681 00 RES FXD CMPSN 680 OHM 51 0 25W 01121 CB6815 83185 315 0471 00 RES FXD CMPSN 470 OHM 5 0 25W 01121 CB4715 R3186 315 0751 00 RES FXD CMPSN 750 OHM 5 0 25W 01121 7515 R3188 315 0391 00 RES FXD CMPSN 390 OHM 5 0 25W 01121 3915 R3210 315 0754 00 RES PXD CMPSN 7SOK OHM 5 0 25W 01121 7545 R3212 315 0334 00 RES FXD CMPSN 330K OHM 51 0 25W 01121 3345 R3215 315 0750 00 RES FXD CMPSN 75 OHM 5 0 25W 01121 7505 R3220 315 0680 00 RES PXD CMPSN 68 OHM 51 0 25W 01121 6805 R3222 315 0102 00 RES FXD CMPSN 1K OHM 51 0 25W 01121 1025 R3223 315 0102 00 RES FXD CMPSN 1K OHM 5 0 25W 01121 1025 R3224 315 0431 00 RES FXD CMPSN 430 OHM 5 0 25W 01121 CB4315 R3226 315 0271 00 RES PXD CMPSN 270 OHM 54 0 25W 01121 2715 83227 315 0431 00 RES FXD CMPSN 430 OHM 5 0 25W 01121 4315 R3226 315 0101 00 RES PXD CMPSN 100 OHM 5 0 25W 01121 CB1015 83229 315 0620 00 RES PXD CMPSN 62 OHM 5 0 25W 01121 CB6205 R3235 315 0470 00 RES FXD CMPSN 47 OHM 5 0 25W 01121 4705 83244 321 0239 00 RES PXD FILM 3 01K OHM 1 0 125W 91637
69. 22 H4 R1169 C3 R4237 J5 CR4224 H4 R1200 B6 R4238 46 B J 4129 caai FAST RAMP 2 7 05 35 COMP L L 9 R4224 Raise TOV BAIK BEM 84135 CM 15 Razas 5 swe 4 OUTPUT SWEEP Rane H dhs PULL X10 R4343 R4346 HORIZ MAG SAIN 2 43 51607 me 04345 67 LOOK hedhe 68 1 Mus 5 o s x 500 404 wed S xam xy mong DIAG E 52 649k s Xe Bimas REG RUSS cg v lt H mac REG 2 ore 210 OUTPUT HH yo Raza POSITION is us Bark 7204 2112 878 a 00 POSITION e os I cars lone qu 5 oT To 6440 FAST RAMP 4 n 5 35 COMP R n 27 9535 men caas 47 O sv all vate XX Aw 1 4325 PARTIAL MAIN BOARD 56504 PARTIAL A4 HORIZONTAL DEFLECTION BOARD HORIZONTAL PREAMPLIFIER OUTPUT AMPLIFIER BOARD REN A FEB 1375 2196 34 LEFT HORIZ DP scs HIGH Fig 8 9 Fig 8 10 Table 8 8 INDEX LOCATI
70. 25W 01121 6205 4132 321 0284 00 RES FXD FILM 8 87K 19 0 125 91637 MFF1816G88700F R4133 301 0223 00 RES PXD CMPSN 22K OHM 5 0 50W 01121 2235 4135 321 0186 00 RES FXD FILM 845 OHM 1 0 125W 91637 MFF1816G845R0F R4136 321 0186 00 RES FXD FILM 845 OHM 1 0 125W 91637 MFF1816G845ROF R4139 315 0620 00 RES PXD CMPSN 62 OHM 5 0 25W 01121 6205 R4142 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W 01121 CB1015 R4143 321 0171 00 11 590 OHM 1 0 125W 91637 MFF1816G590ROF R4145 315 0620 00 RES FXD CMPSN 62 OHM 5 0 25W 01121 6205 84212 315 0470 00 7 5 0 254 01121 CB4705 R4216 321 0171 0090 RES 0 125 91637 MFF1816G590ROF 7 18 Replaceable Electrical Parts SC 504 Tektronix Serial Model No Mfr Ckt amp Description Code Mfr Part Number R4217 321 0313 00 RES FXD F1LM 17 8K OHM 1 0 125W 91637 1816617801 R4218 321 0275 00 RES FXD FILM 7 15K OHM 1 0 125W 91637 MFF1816G71500F R4220 321 0211 00 RES PXD FILM 1 54K OHM 1 0 125W 91637 MFF1816G15400F 84221 315 0621 00 RES PXD CMPSN 620 OHM 5 0 25W 01121 CB6215 4223 321 0289 00 RES FXD FILM 10K OHM 1 0 125W 91637 MFF1816G10001F R4224 321 0284 00 RES FXD FILM 8 87K OHM 1 0 125W 91637 1816 88700 R4225 315 0470 00 RES FXD CMPSN 47 OHM 5 0 25W 01121 4705 4227 315 0621 00 RES FXD CMPSN 620 5 0 25 01121 CB6215 R4228 321 0261 00 RES PXD FILM 5 11K OHM 1 0 125
71. 281 0788 00 CAP FXD CER DI 470PF 10 100V 72982 8005H9AADW5RA71K C211 283 0331 00 CAP 3PF 21 100V 72982 805 505A430G c213 281 0222 00 CAP 6 5 400 80031 2222 801 96135 217 283 0000 00 0 0010 100 0 500 72982 831 516 102 221 283 0331 00 PXD CER DI 43PF 2 100V 72982 805 505A430G 223 281 0222 00 CAP VAR CER DI 1 6 5PF 400V 80031 2222 801 96135 231 283 0168 00 CAP PXD CER DI 12PF 5 100V 72982 8111 100 0601207 233 281 0222 00 CAP VAR CER DI 1 6 5PF 400V 80031 2222 801 96135 235 281 0557 00 CAP PXD CER DI 1 8PF 10 500V 72982 301 000 0 0189 C240 281 0659 00 CAP FXD CER DI 4 3PF 0 25PF 500V 72982 301 000 0 0439 C241 283 0414 00 CAP PXD CER DI 0 022UF 20 500V 72982 8131 500 78223 1116 281 0788 00 CAP FXD CER D1 470PF 10 100V 72982 8005H9AADWSR471K C1117 290 0580 00 7 0 270 20 50 56289 1960274 0050 1 11401 285 0752 00 CAP FXD PLASTIC 1UF 3 5 50V 80009 285 0752 00 1141 290 0522 00 CAP FXD ELCTLT 1UP 205 50V 56289 1960105 0050 1 1142 290 0512 00 220 204 15 56289 1960226 0015 1 11501 285 0753 01 CAP PXD PLASTIC 01UF 100V 80009 285 0753 01 C1151 290 0522 00 CAP FXD ELCTLT 1UP 20 50V 56289 196D105X0050HA1 c1219 290 0283 00 CAP PXD ELCTLT 0 47UF 10 35V 56289 162D474X90358C2 c1220 281 0772 00 DI 0 0047UF 10 100V 72982 8005H9AADW5R472K C1233 281 0814 00 CAP F
72. 290 0512 00 PXD ELCTLT 22UF 208 15V 56289 1960226 0015 1 3140 290 0534 00 CAP FXD ELCTLT 1UF 20 35V 56289 196 105 0035 1 3142 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRlO3K C3155 290 0512 00 PXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 C3163 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRlO3K C3164 290 0523 00 PXD ELCTLT 2 2UF 20 20V 56289 1960225 0020 1 3165 281 0775 00 CAP PXD CER 01 0 10 20 50 72982 800509 250104 C3166 281 0786 00 CAP FXD CER DI 150PF 10 100V 72982 390049X5P0151K C3176 290 0512 00 FXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 c3182 281 0759 00 CAP FXD CER DI 22PF 10 100V 72982 390 049 5 0220 C3189 290 0512 00 CAP FXD ELCTLT 22UF 20 157 56289 1960226 0015 1 3210 283 0076 00 CAP FXD CER DI 27PF 10 500V 56289 40 287 2 3212 283 0600 00 CAP PXD MICA D 43PF 5 500V 00853 0105 43020 C3228 290 0512 00 CAP PXD ELCTLT 22UF 208 15V 56289 1960226 0015 1 C3229 290 0512 00 CAP PXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 3232 290 0512 00 CAP PXD ELCTLT 22U 209 15V 56289 1960226 0015 1 C3240 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRlO3K C3242 290 0512 00 CAP PXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 C3243 281 0763 00 CAP PXD CER D1 47PF 10 100V 72982 390049X5P0470K C3245 290 0512 00 CAP PXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 3280 281 0773 00
73. 3 00 RES PXD CMPSN 15K OEM 5 0 2SW 01121 1535 82422 315 0302 00 RES FXD CMPSN 3K OHM 5 0 25W 01121 3025 R2463 315 0431 00 RES FXD CMPSN 430 OHM 5 0 25W 01121 CB4315 82465 315 0241 00 RES FXD CMPSN 240 OHM 5 0 25W 01121 CB2415 R2466 321 0764 01 RES FXD PILM 5 09K OHM 0 5 0 125W 91637 MFF1816G50900D R2468 315 0241 00 RES FXD CMPSN 240 OHM n 0 25W 01121 CB2415 R2469 315 0511 00 01121 CB5115 R2482 315 0202 00 01121 CB2025 R2483 315 0363 00 RES PXD CMPSN 36K OHM 5 0 25W 01121 3635 R2485 315 0181 00 RES PXD CMPSN 180 OHM 5 0 25W 01121 1815 R2486 315 0181 00 RES FXD CMPSN 180 OHM 5 0 25W 01121 1815 R2487 315 0181 00 RES FXD CMPSN 180 OHM 5 0 25W 01121 1815 R2488 315 0101 00 FXD CMPSN 100 OHM 5 0 25W 01121 1015 R2489 315 0101 00 FXD CMPSI 00 OHM 5 0 25W 01121 1015 R2497A B 311 1946 00 RES VAR NONWIR PNL lOK 20 0 50W 12697 41721 R3100 311 1192 00 VAR NONWIR 10K 20 18 71590 BR 232 001 R3110 311 1228 00 VAR NONWIR 10K OHM 20 0 50W 32997 3386 04 103 R3112 315 0513 00 FXD CMPSN 51K 5 0 254 01121 5135 R3114 315 0513 00 PXD CMPSN 51K OHM 51 0 25W 01121 5135 R3115 311 1228 00 RES VAR NONWIR 10K 20 0 50 32997 3386F T04 103 R3116 315 0103 00 FXD CMPS OK OHM 51 0 25W 01121 CB1035 83118 315 0622 00 2K 5 0 25 01121 6225 R3120 315 0621 00 20 OHM 58 0 25W 01121 6215 7 15 Replaceable Electrical Parts SC 504 Tekt
74. 4445 78189 78553 79136 79807 80009 82647 83385 83693 87308 95987 CR0SS INDEX MFR C0DE NUMBER MANUFACTURER Manufacturer Address SONY TEKTRONIX CORPORATION AMP INC TEXAS INSTRUMENTS INC SEMICONDUCTOR GROUP ELECTROVERT INC I USM CORP USM FASTENER DIV SPECTRA STRIP CORP PLASTIGLIDE MFG CORPORATION FREEWAY CORPORATION THERMALLOY COMPANY INC BERG ELECTRONICS INC PRODUCT COMPONENTS CORP GETTIG ENG AND MFG COMPANY ALLEN MFG CO BRISTOL SOCKET SCREW DIV OF AMERICAN CHAIN AND CABLE CO INC CAMBRIDGE THERMIONIC CORP FISCHER SPECIAL MPG CO TEXAS INSTRUMENTS INC METALLURGICAL MATERIALS DIV HOLO KROME CO ILLINOIS TOOL WORKS INC SHAKEPROOF DIVISION EATON CORPORATION ENGINEERED FASTENERS DIVISION TINNERMAN PLANT WALDES KOHINOOR INC WROUGHT WASHER MFG CO TEKTRONIX INC TEXAS INSTRUMENTS INC CONTROL PRODUCTS DIV CENTRAL SCREW CO HELDOR ASSOCIATES INC N L INDUSTRIES INC SOUTHERN SCREW DIV WECKESSER CO INC P BOX 14 HANEDA AIRPORT P O BOX 3608 P O BOX 5012 13500 N CENTRAL EXPRESSWAY 86 HARTFORD AVENUE 510 RIVER RD 7100 LAMPSON AVE P O BOX 867 1757 STANFORD ST 9301 ALLEN DRIVE 2021 W VALLEY VIEW LANE BOX 34829 YOUK EXPRESSWAY 30 LORRAINE AVE PO BOX 85 OFF ROUTE 45 P O DRAWER 570 P O BOX 2244 40 BRISTOL ST 445 CONCORD AVE 446 MORGAN ST 34 FOREST STREET 31 BROOK ST WEST ST CHARLE
75. 51 0221 00 TRANSISTOR SILICON PNP 80009 151 0221 00 03144 151 0438 00 TRANSISTOR SILICON PNP SEL FROM SPS6927 80009 151 0438 00 03145 151 0192 00 TRANSISTOR SILICON NPN SEL FROM 56521 80009 151 0192 00 Q3152 151 0341 00 TRANSISTOR SILICON NPN 07263 5040065 03154 151 0341 00 TRANSISTOR SILICON NPN 07263 5040065 93156 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 93178 151 0333 00 TRANSISTOR SILICON NPN SEL FROM MPS918 80009 151 0333 00 lpurnished as a unit with 02320 Replaceable Electrical Parts SC 504 Ckt 3188 3224 03225 03234 03235 93236 03237 03244 03247 Q3248 03252 03258 03260 03261 03262 03263 93264 03265 03266 93268 03269 03280 03286 03366 03367 93368 93369 03372 93373 93375 93470 93472 93474 93475 03476 03478 03479 93480 03482 03484 03485 Q3488 03520 03522 03523 93524 410 04125 04126 04132 04137 04145 04147 7 10 Tektronix Serial Model PartNo Dscont 151 0333 00 151 0333 00 151 0333 00 151 0225 00 151 0225 00 151 0220 00 151 0220 00 151 0190 00 151 0342 00 151 0190 00 151 0342 00 151 0342 00 151 0342 00 151 0342 00 151 0342 00 151 0342 00 151 0342 00 151 0342 00 151 0220 00 151 0342 00 151 0342 00 151 0341 00 151 0341 00 151 0341 00 151 0190 00 151 0190 00 151 0342 00 151 0103 00 151 0341 00 151 0341 00 151 0341 00 151 0134 00 151 0342 00 151 0342 00 151 0347 00 151 0342 00 151 0347 00
76. 579 00 3 TERM TEST PT 0 40 INCH LONG 80009 214 0579 00 7131 344 0154 00 6 CLIP ELECTRICAL FOR 0 25 INCE DIA FUSE 80009 344 0154 00 2132 131 0566 00 11 LINK TERM CONNE 0 086 DIA X 2 375 INCH L 55210 1 2007 1 7 133 131 0608 00 30 CONTACT ELEC 0 365 L X 0 25 PH BRZ GOLD PL 22526 47357 134 6 CONNECTOR BODY SEE J3188 J33290 33325 33380 J3382 33390 2135 136 0252 04 6 SOCKET PIN TERM 0 188 INCH LONG 22526 75060 7136 344 0244 00 1 CLIP CMPNT MTG 80009 344 0244 00 2137 136 0514 00 3 SOCKET PLUG IN MICROCIRCUIT 8 CONTACT 73803 950802 7138 136 0260 02 3 SOCKET PLUG IN 16 CONTACT LOW CLEARANCE 82647 951601 334 3080 00 1 MARKER IDENT 80009 334 3080 00 7139 426 2246 50 1 FR SECT PLUG IN RIGHT SIDE TOP AND 80009 426 1246 00 7140 2 BOARD ASSY VERT SW SEE 9 141 1201347700 4 DISC 0 187 X 0 02 BLADE 45 DEG BEND 142 2 MICROCIRCUIT LI SEE 1430 AND HY1530 EPL 143 2 RES NTWK FXD FI SEE HY1320 5 1520 672 0651 00 1 BOARD ASSY MAIN W CAM SWITCH 80009 672 0651 00 144 384 1380 00 1 EXTENSION 5 5 2 L X 0 081 OD SST PSVT 80009 384 1380 00 145 376 0050 00 1 CPLG SHAFT FLEX FOR 0 081 0 125 INCH SHAFTS 80009 376 0050 00 213 0022 00 4 SETSCREW 4 40 X 0 188 INCH HEX SOC STL 74445 OBD 146 1 RES VAR NONWIR SEE 1152 361 0515 00 1 SPACER SWITCH PLASTIC 80009 361 0515 00 Senas 1 DRUM ASSY CAM S SEE 51130 EPL ATTA
77. 63 5040065 151 0341 00 TRANSISTO 07263 5040065 151 0341 00 TRANSISTOR SILICON NPN 07263 5040065 Replaceable Electrical Parts SC 504 Tektronix Serial Model No Mfr CktNo PartNo Dscont Name amp Description Code Mfr Part Number 91237 151 1031 00 TRANSISTOR SILICON FE N CHANNEL DUAL 80009 151 1031 00 Q1240 151 0220 00 TRANSISTOR SILICON PNP 80009 151 0220 00 01241 151 0220 00 TRANSISTOR SILICON PNP 80009 151 0220 00 01242 151 0192 00 TRANSISTOR SILICON NPN SEL FROM MPS6521 80009 151 0192 00 91250 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 91255 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 01280 151 0221 00 TRANSISTOR SILICON PNP 80009 151 0221 00 91288 151 0347 00 TRANSISTOR SILICON NPN 80009 151 0347 00 01289 151 0350 00 TRANSISTOR SILICON PNP 80009 151 0350 00 01335 151 1090 02 TRANSISTOR SILICON FE DUAL N CHANNEL 80009 151 1090 02 01378 151 0437 00 TRANSISTOR SILICON NPN SEL FROM 285769 80009 151 0437 00 01380 151 0426 00 TRANSISTOR SILICON NPN 80009 151 0426 00 Q1381 151 0364 00 TRANSISTOR SILICON PNP 80009 151 0364 00 91435 151 1090 02 TRANSISTOR SILICON FE DUAL N CHANNEL 80009 151 1090 02 91455 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 91456 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 Q1458 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 91460 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 01462 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 01555 151 0190 00 TRANSIS
78. 81 0214 00 CAP VAR CER DI 0 5 3PF 400V 80031 2222 801 96138 C1340 290 0580 00 CAP FXD ELCTLT 0 27UF 20 50V 56289 1962274 0050 1 C1341 281 0772 00 CAP FXD CER DI 0 0047UF 10 100V 72982 8005H9AADWSR472K C1345 281 0809 00 CAP FXD CER DI 200PF 5 100V 72982 8005A2AADCIC201J C1349 281 0207 00 CAP VAR PLSTC 2 18PF 100V 80031 HT10EA 218 lavailable as a matched set part number 295 0138 00 letter suffix and the tolerance should be the same for all of the timing capacitors in the assembly Replaceable Electrical Parts SC 504 Tektronix Serial Model No Part Eff Dscont Name amp Description Code Part Number C1355 290 0534 00 CAP PXD ELCTUT 1UF 20 35V 56289 1960105 0035 1357 290 0534 00 CAP FXD ELCTLT 1UF 20 35V 56289 1960105 0035 1 1370 283 0084 00 CAP FXD CER DI 270PF 5 1000V 72982 838 533 2717 C1372 283 0178 00 CAP PXD CER DI 0 1UF 80 20 100V 72982 8131 145 E 1042 1373 281 0549 00 CAP FXD CER DI 68PF 10 500V 72982 301 0000270680 C1374 283 0167 00 CAP FXD CER 01 0 10 10 100 72982 8131N147 104K C1380 283 0032 00 CAP PXD CER DI 470PF 5 500V 72982 831 5002504712 1385 290 0272 00 PXD ELCTLT 47UF 20 50V 56289 109D476X0050F2 C1390 283 0044 00 CAP FXD CER DI 0 001UF 3000V 72982 3903BWOO2Y5S102M 1391 283 0263 00 FXD CER DI 0 0022UF 20 30007 56289 33 319 1392 283 0128 00 CA
79. 816D20002C MFF1816D20001C 4705 CB1025 MFF1816D20001C MFF1816D20002C HFF188G20003F CB1035 CB1835 CB1815 CB6205 1035 7 11 Replaceable Electrical Parts SC 504 Tektronix Serial Model No Part Dscont Name amp Description Code Part Number R1243 315 0822 00 RES FXD CMPSN 8 2K OHM 5 0 25W 01121 CB8225 R1245 315 0223 00 RES FXD CMPSN 22K OHM 5 0 25W 01121 CB2235 R1250 315 0273 00 RES FXD CMPSN 27K OHM 5 0 25W 01121 2735 1252 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W 01121 CB1035 1259 315 0122 00 RES FXD CMPSN 1 2K OHM 5 0 25W 01121 CB1225 R1271 315 0361 00 FXD CMPSN 360 OHM 5 0 25W 01121 CB3615 R1272 315 0684 00 FXD CMPSN 680K OHM 5 0 25W 01121 CB6845 R1273 315 0123 00 RES FXD CMPSN 12K OHM 5 0 25W 01121 CB1235 R1276 315 0361 00 RES FXD CMPSN 360 OHM 5 0 25W 01121 3615 R1280 315 0620 00 RES FXD CMPSN 62 OHM 5 0 25W 01121 6205 R1281 315 0470 00 RES FXD CMPSN 47 OHM 5 0 25W 01121 4705 R1282 315 0203 00 RES PXD CMPSN 20K OHM 5 0 25W 01121 2035 R1283 315 0394 00 RES PXD CMPSN 390K OHM 5 0 25W 01121 3945 1284 315 0123 00 RES PXD CMPSN 12K OHM 54 0 25W 01121 1235 R1285 307 0490 00 RES NIWK FXD FI HIGH VOLTAGE DIVIDER 80009 307 0490 00 R1286 321 0335 00 RES PXD FILM 30 1K OHM 11 0 125W 91637 MFF1816G30101F R1288 315 0164 00 RES FXD CMPSN 160K OHM 5 0 25W 01121 1645 R1289 315 0332 00 RES PX
80. 85 CRI466 07 01555 J5 R1466 K7 53386 CR1469 J6 03178 R1510 C5 10 03188 F5 R1531 12 ass i6 CRaz0s Es 03286 5 81532 K2 50504 SHOWN IN AC POSITION 1525 p F H k VOLTS DIV 515258 SHOWN M SmV POSITION 91549 10v ak SE 5v e Ey miae 61245 0455 Zoo 0047 OmV Cw E UND m fie 09 t cdi do ded 1B e 20 22 RUBIO AS VERTICAL SWITCH PD J PARTIAL A3 TRIGGER BOARD N 1 K3386 K m 4 1 T T T HY 1530 T C1530 To 5 h 150 emh Re YS RASE net ei RE FROM 7 i CRISSS lt Paso 0G eo EE l 1 4464 eel 221 4 4 P o isso CHANNEL 1 PREAMPLIFIER lt gt REY A FEB
81. 9 80 2328 321 0069 00 RES PXD FIIM 51 1 1 0 1254 91637 MFF1816G51R10F R2332 315 0241 00 RES PXD CMPSN 240 OHM 5 0 25W 01121 2415 R2333 321 0134 00 RES FXD FILM 243 OHM 1 0 125W 91637 MPF1816G243ROF R2336 311 1265 00 RES VAR NONWIR 2K OHM 10 0 50W 32997 3329 1 58 202 R2337 321 0101 00 RES PFXD FILM 110 OHM 18 0 125W 91637 MFF1816GllOROF R2340 322 0617 00 RES PXD FILM 47 7 OHM 1 0 25W 19701 MP52C47R70F R2347 315 0241 00 RES FXD CMPSN 240 OHM 5 0 25W 01121 2415 R2353 308 0800 00 RES FXD WW 470 OHM 1 4W 91637 NS2 B470ROF R2358 308 0677 00 RES PXD WW l OHM 5 2W 75042 BWH 1RO00J R2361 321 0318 02 RES FXD FILM 20K OHM 0 5 0 125W 91637 MFF1816D20001D R2362 308 0679 00 RES FXD WW 0 51 OHM 5 2W 75042 BWH R5100J R2363 315 0392 00 RES PXD CMPSN 3 9K OHM 5 0 25W 01121 3925 R2384 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W 01121 1015 R2385 315 0133 00 OHM 51 0 25W 01121 335 R2386 315 0202 00 RES PXD CMPSN 2K OHM 5 0 25W 01121 2025 R2387 315 0101 00 00 OHM 55 0 25W 01121 CB1015 R2390 315 0622 00 2K 5 0 25 01121 6225 R2391 315 0203 00 OHM 5 0 25W 01121 2035 2410 315 0391 00 90 OHM 5 0 25W 01121 3915 R2411 315 0751 00 50 5 0 25 01121 7515 R2413 315 0682 00 8K 5 0 254 01121 CB6825 R2414 315 0362 00 6K OHM 5 0 25W 01121 3625 82419 315 0362 00 6K OHM 5 0 25W 01121 CB3625 R2420 315 0390 00 9 OHM 5 0 25W 01121 3905 R2421 315 015
82. 9 131 1248 00 210 210 0406 00 2 NUT PLAIN HEX 4 40 X 0 188 INCH BRS 73743 2 12161 402 211 214 1704 01 1 SPRING FLAT CAM SW DETENT 0 008 INCH 80009 214 1704 01 212 214 1127 00 1 ROLLER DETENT 0 125 DIA X 0 125 INCH L 80009 214 1127 00 213 105 0752 00 1 ACTUATOR CAM SW DISPLAY MODE 80009 105 0752 00 ATTACHING PARTS 214 354 0219 00 1 RING RETAINING FOR 0 25 INCH SHAFT 79136 5103 25 MD R pepe 215 401 0155 00 1 BEARING CAM SW FRONT 80009 401 0155 00 216 210 0406 00 2 NUT PLAIN HEX 4 40 X 0 188 INCH BRS 73743 2 12161 402 2217 401 0156 00 1 BEARING CAM SW REAR 80009 401 0156 00 4216 e 1 1 CKT BOARD ASSY F AND I SEE A2 EPL 219 1 SWITCE PUSH SEE 52285 EPL 220 361 0384 00 2 SPACER PB SW 0 133 INCH LONG 80009 361 0384 00 221 136 0514 00 2 SOCKET PLUG IN MICROCIRCUIT 8 CONTACT 73803 950802 222 131 0604 00 7 CONTACT ELEC CKT CD SW SPR 80009 131 0604 00 223 136 0548 00 1 CONNECTOR RCPT SIDE ENTRY 10 CONTACT 00779 2 380949 0 224 136 0269 02 1 SOCKET PLUG IN 14 CONTACT LOW CLEARANCE 01295 951401 225 131 0907 00 1 CONTACT ELEC GROUNDING 80009 131 0907 00 ATTACEING PARTS 226 211 0008 00 1 SCREW MACHINE 4 40 X 0 25 INCH PNH STL 83385 OBD 227 210 0406 00 1 NUT PLAIN HEX 4 40 X 0 188 INCH BRS 73743 2 12161 402 ese apexes 228 214 2593 00 2 HEAT SINK XSTR 6 TO 5 ALUMINUM 80009 214 2593 00 229 342 0324 00 3 INSULATOR DISC TO 5 TRANS
83. ADJUST R3115 Peak located on the Trigger board to position the top of the displayed waveform to one half major graticule division below the point where the waveform just loses triggering REV A MAR 1979 Section 4 SC 504 THEORY OF OPERATION VERTICAL CIRCUITRY Input Coupling Signals entering the input connectors can be dc coupled internally disconnected from the input to the preamplifier circuit GND or ac coupled signals from the rear interface can be dc coupled When the DC GND AC INT DC switch is in the DC position the input signal is coupled directly to the attenuator When the switch is in the GND position the input to the attenuator is grounded This provides a ground reference without disconnecting the signal from the input connector When the switch is in the AC position the input signal passes through the coupling capacitor to the attenuator This capacitor blocks the dc componentof the signal When the switch is in the INT DC position the rear interface signals are internally coupled to the channel 1 or channel 2 attenuators In channel 1 the vertical signal from pins 14 and 15 of the rear interface connector is fed into the CH 1 attenuator When 03286 conducts K3386 is energized closing 53386 The operation of channel 2 circuitry is identical to that of channel 1 VOLTS DIV Switching and Attenuators The overall deflection factor of each channel is deter mined by the VOLTS DIV switch setting The ba
84. ARNING To avoid electric shock nazard disconnect the instrument from all other electrical equipment and the power source before proceeding The following instructions are for use by qualified service personnel only To avoid personal injury do not perform any of the following procedure unless you are qualified to do so Refer to the Maintenance and Interfacing Information section your SC504 instruction Manual and perform the steps necessary to remove the crt Remove the HV cover at the bottom rear of the instrument Remove the Geometry adjust potentiometer R1580 refer to Fig 2 Replace C1395 0 016 capacitor with the dummy resistor W1395 from the kit your insrument has red violet wire soldered to the board at tne location labeled 70V in Fig 2 remove the wire from the board and remove it from the pin in the crt socket to which it connects Refer to the Maintenance and interfacing section of your SC504 Instruction Manual and perform the steps necessary to replace the ert Refer to the Calibration procedure in your instruction Manual and recalibrate as neccessary For future reference fasten the manual Modification insert into your instruction Manual Remove the protective backing from the 050 1601 XX label and affix it to a clean area of the top rame section near the serial number tag 050 1601 01 page 5 TEKIRONIX MANUAL MODIFICATION INSERT GENERAL V800R OR V1000 REPLACEMEN
85. ASSY CAM S ATTENUATOR 80009 263 1167 00 52285 260 1686 00 SWITCH PUSH 1 STA 2 POLE MOMENTARY 80009 260 1686 00 S2375 263 1163 00 ACTR 55 S DISPLAY MODE 80009 263 1163 00 S3315 263 1165 00 ACTR ASSY CAM S TRIGGER SOURCE 80009 263 1165 00 S3511A C 263 0015 06 ASSY PB 2 LATCH 1 CANCEL 7 SMM 80009 263 0015 06 3512A 263 0010 00 SWITCH PB ASSY 1 PUSH 7 5MM WITH 2 CONTACTS 80009 263 0010 00 535128 263 0010 00 SWITCH PB ASSY 1 PUSH 7 5MM WITH 2 CONTACTS 80009 263 0010 00 3512C 263 0010 00 SWITCH PB ASSY 1 PUSH 7 5MM WITH 2 CONTACTS 80009 263 0010 00 T1385 108 0828 00 COIL RF 65UH TOROIDAL 80009 108 0828 00 71455 120 1167 00 TRANSPORMER RP TOROID 5 TURNS BIFILAR 80009 120 1167 00 T1475 120 1016 00 XPMR PWR SDN SU HIGH VOLTAGE 80009 120 1016 00 01270 156 0067 00 MICROCIRCUIT LI OPERATIONAL AMPLIFIER 80009 156 0067 00 02170 156 0038 00 MICROCIRCUIT DI J K MASTER SLAVE FLIP FLOP 80009 156 0038 00 172263 156 0067 00 MICROCIRCUIT LI OPERATIONAL AMPLIFIER 80009 156 0067 00 2480 156 0067 00 MICROCIRCUIT LI OPERATIONAL AMPLIFIER 80009 156 0067 00 03120 156 0067 00 MICROCIRCUIT LI OPERATIONAL AMPLIFIER 80009 156 0067 00 03125 156 0067 00 MICROCIRCUIT LI OPERATIONAL AMPLIFIER 80009 156 0067 00 03148 156 0067 00 MICROCIRCUIT LI OPERATIONAL AMPLIFIER 80009 156 0067 00 03158 155 0122 00 MICROCIRCUIT DI A amp LOGIC 200 OHM 80009 155 0122 00 03238 155 0109 01 MICROCIRCUIT LI MONOLITHIC 80009 155 0109 01 03276 156 0860 00 MICROCIRCUIT DI
86. BUS CONDUCTOR DUMMY RESISTOR 050 1601 01 2
87. CHING PARTS 147 211 0244 00 4 SCR ASSEM WSHR 4 40 X 0 312 INCH PNH STL 78189 OBD m 131 0963 00 1 CONTACT ELEC GROUNDING 80009 131 0963 00 7 DRUM ASSY INCLUDES 148 200 2107 00 1 58 15 ELEMENT ALUMINUM 80009 200 2107 00 ATTACHING PARTS 149 211 0008 00 4 SCREW MACHINE 4 40 X 0 25 INCH PNH STL 83385 OBD 150 210 0004 00 4 WASHER LOCK INTL 0 12 ID X 0 26 0D STL 78189 1204 00 00 0541 Shei w P 151 131 0963 00 1 CONTACT ELEC GROUNDING 80009 131 0963 00 152 210 0406 00 2 NUT PLAIN HEX 4 40 X 0 188 INCH BRS 73743 2 12161 402 153 214 1139 03 1 SPRING FLAT RED COLORED 80009 214 1139 03 214 1139 02 1 SPRING PLAT GREEN COLORED 80009 214 1139 02 154 214 1752 00 2 ROLLER DETENT 80009 214 1752 00 155 105 0754 00 1 ACTUATOR CAM SW TIME DIV 80009 105 0754 00 7156 384 0878 07 1 SHAFT CAM SW OUTER CONCENTRIC W DRIVER 80009 384 0878 07 ATTACHING PARTS 157 354 0390 00 1 RING RETAINING 0 338 ID X 0 025 THK STL 79136 5100 37MD 7158 401 0180 00 1 BEARING CAM SW FRONT 80009 401 0180 00 159 210 0406 00 2 NUT PLAIN HEX 4 40 X 0 188 INCH BRS 73743 2 12161 402 7160 401 0178 00 1 SW CENTER REAR 80009 401 0178 00 161 384 1180 00 2 EXTENSION SHAFT 6 40 INCH LONG 80009 384 1180 00 162 214 2567 00 2 LEVER SWITCH AC GND DC 80009 214 2567 00 9 6 Fig amp Index No 1 163 164 165 166 167 168 169 170 171 172
88. CR1140 developing a sweep Holdoff The holdoff signal is available at pin 9 of U3158 which connects to the gate generator U3238 at pin 10 Diagram 4 This positive going signal prevents the generating of sweep gates during holdoff times or after a single sweep has occurred Holdoff begins when pin 12 of U3158 goes high The resistor capacitor network connected to pins 10 and 11 01U3158 determine the holdoff time The setting of the SECONDS DIV switch determines the duration of the ramp Single Sweep In the SGL SWP mode pin 1 of U3158 is grounded and pin 4 of U3158 is ungrounded When the sweep is armed pins 13 and 15 of U3158 are low causing the READY TRIG D indicator to light This action at pins 13 and 15 also occurs when the sweep is in a triggered mode Resistor R3156 limits the LED current to a specified value Depressing the SGL SWP switch momentary pushbut ton grounds pin 2 of U3158 which causes the gate generator U3238 to reset This action turns on the READY TRIG D light and arms the circuit for another non triggered ramp 45 Theory Operation SC 504 TRIG GATE AUTO GATE output SWP GATE Fig 4 3 Simplified sweep control circuit Ramp Generator The sweep ramp is generated during the time that Q1240 is The amount of current determined by the timing resistor flows through the timing capacitor due to the action of the operational amplifier composed of Q1237 Q1241 and Q1242 This
89. Connect the probe tip to the signal source 4 several seconds for the input coupling capacitor to charge 5 Set the DC GND AC INT DC switch to AC The display will remain on screen so the ac component of the signal can be measured in the normal manner The INT DC position of the switch selects the signal con nected at the rear interface input Trigger Source CH 1 and 2 Triggering For most applications the be triggered internally In the CH 1 and CH 2 positions of the TRIGGERING SOURCE switches the trigger signal is obtained from the vertical deflection system For dual trace displays special considerations must be made to provide the correct display Line Triggering The LINE position of the TRIGGERING SOURCE switch connects a sample of the power line voltage to the input of the trigger generator Line triggering is useful when the input signal is time related multiple to the line frequency It is also useful for providing a stable display of a line frequency component in a complex waveform External Triggering An external signal connected to the EXT TRIG connector can be used to trigger the sweep in the EXT position of the TRIGGERING SOURCE switch The external signal must be time related to the displayed signal for a stable display An external trigger signal can be used to provide a triggered display when the internal signal is too low in amplitude for correct triggering or contains signal c
90. D CMPSN 3 3K OHM 5 0 25W 01121 3325 R1290 315 0622 00 RES PXD CMPSN 6 2K OHM 5 0 25W 01121 6225 1292 315 0513 00 RES FXD CMPSN 51K OHM 5 0 25W 01121 5135 1293 315 0102 00 RES FXD CMPSN 1K OHM 5 0 25W 01121 CB1025 R1300 315 0560 02 RES FXD CMPSN 56 OHM 5 0 25W 80009 315 0560 02 1310 315 0101 00 RES PXD CMPSN 100 OHM 5 0 25W 01121 CB1015 R1311 315 0100 00 RES FXD CMPSN 10 OHM 5 0 25W 01121 1005 R1315 323 0068 00 RES FXD FILM 49 9 OHM 1 0 50W 75042 CECTO 49R90F R1325 315 0100 00 RES FXD CMPSN 10 OHM 5 0 25W 01121 1005 R1326 315 0122 00 RES FXD CMPSN 1 2K OHM 5 0 25W 01121 CB1225 R1327 315 0102 00 RES PXD CMPSN 1K OHM 5 0 25W 01121 1025 R1335 315 0200 00 RES FXD CMPSN 20 OHM 5 0 25W 01121 2005 R1339 315 0200 00 RES FXD CMPSN 20 OHM 5 0 25W 01121 2005 R1340 315 0750 00 RES FXD CMPSN 75 OHM 5 0 25W 01121 CB7505 R1341 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W 01121 CB1015 R1342 315 0103 00 RES PXD CMPSN 10K OHM 5 0 25W 01121 CB1035 R1343 315 0151 00 RES FXD CMPSN 150 OHM 5 0 25W 01121 CB1515 R1344 315 0202 00 RES FXD CMPSN 2K OHM 5 0 25W 01121 CB2025 R1345 311 1263 00 RES VAR NONWIR 1K OHM 10 0 50W 32997 3329P L58 102 R1346 315 0222 00 RES FXD CMPSN 2 2K OHM 5 0 25W 01121 2225 R1347 315 0392 00 RES FXD CMPSN 3 9K OHM 5 0 25W 01121 3925 R1348 315 0472 00 RES FXD CMPSN 4 7K OHM 5 0 25W 01121 4725 R1349 321 0161 00 FXD FILM 464 OHM 19 0 125W 91637 MFFl1816G464RO
91. DIV 5 TRIGGERING MODE NORM SECONDS DIV 2 Connect 2 s time marks froma time mark generator through a 50 Q coaxial cable with a 50 Q termination to the CH 1 input connector b Rotate the TRIGGERING LEVEL control fora stable display Vertically position the display to the center of the viewing area of the crt c CHECK that 1 time marker per major graticule division is displayed on the crt within linearity tolerance and the second and tenth time markers line up with their respective graticule lines within the specifications as shown in the table below d Disconnect all cables and return the front panel controls to the preliminary settings 12 Check the Seconds per Division Variable Range The front panel control settings are the same as the preliminary settings with the following exception SWP RESET switch CH 1 VOLTS DIV 5 SECONDS DIV 15 to 35 C 0 C to 50 sweep rates unmagnified magnified unmagnified magnified 2 s div to 3 4 4 5 50 ms div 0 24 major div 0 32 major div 0 32 major div 0 4 major div 20 ms div to 2 3 3 4 2 0 16 major div 0 24 major div 0 24 major div 0 32 major div us div to 3 4 4 5 50 ns div 0 24 major div 0 32 major div 0 32 major div 0 4 major div Linearity any 5 6 6 7 2 div portion with 0 4 major div 0 48 major div 0 48 major div 0 56 major div in the center 8 div
92. DO SO SECTION 3 SECTION 4 ADJUSTMENT PROCEDURE Page THEORY OF OPERATION Vertical Circuitry WGE COUI aswa Bed 4 1 Volts division Switching and Attenuators 4 1 Fet Input Source Followers 4 1 Gain Switching Circuits and Vertical Preamplifiers 4 1 Channel Switching Trigger Interface Amplifier Trigger View Delay Line and Vertical Amplifier Triggering and Sweep Circuitry Trigger Pickoff Trigger Coupling Input Source Follower Trigger Generator Gate Generator 4 quate ee vy eda VA Sweep Control Operation Sweep Gates d 1 osa Dey cho sere wees Single SWeeD Hos UE SA VN Ramp Generator Horizontal Preamplifier and Output Amplifier 4 4 Crt and Power Supply Circuitry CitiGlrodlt Q sss ewe diate Fears iS BONED 4 7 RC Viele store 4 7 High Voltage Regulation 4 7 High Voltage Outputs ois sais scree sins e hr ere sien 4 7 Control is p 9o 2 4 4 8 Low Voltage Power Supplies 4 8 ours asino sale ans e 9 dir Sal ve Sven ade 4 8 TABLE CONTENTS cont
93. Description Code Part Number C3520 290 0512 00 CAP FXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 C3521 281 0759 00 CAP PXD CER DI 22PF 10 100V 72982 390 049 5 0220 3525 290 0512 00 CAP PXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 C3526 281 0763 00 CAP FXD CER DI 47PF 10 100V 72982 390049 5 0470 C4ll8 290 0572 00 CAP FXD ELCTLT 0 1UP 20 50V 56289 196 104 0050 1 C4122 281 0773 00 CAP FXD CER 0 010 10 100 72982 800SHOAADWSRLO3K C4124 281 0773 00 CAP FXD CER 01 0 010 10 100 72982 8005H9AADWSRlO3K 4129 281 0611 00 CAP PXD CER DI 2 7PF 0 25PF 200V 72982 374 001 020279 C4130 281 0773 00 CAP FXD CER D 01UF 10 100V 72982 8005H9AADW5R103K C4131 281 0217 00 CAP VAR CER DI 0 5 3 SPF 400V 80031 2222 801 96127 135 281 0773 00 PXD CER DI 0 01UF 10 100V 72982 8005H9AADWSR1O3K C4140 281 0217 00 CAP VAR CER DI 0 5 3 SPF 400V 80031 2222 801 96127 4142 281 0611 00 CAP PXD CER DI 2 7PP 0 25PF 200V 72982 374 001 070279 C4144 281 0773 00 CAP PXD CER DI 0 01UF 10 100v 72982 8005H9AADWSRIO3K C4146 281 0773 00 CAP FXD CER DI 0 01UP 10 100V 72982 8005H9AADWSRlO3K 72982 8131N145 E 1042 56289 1960105 0035 1 C4212 283 0178 00 C4232 290 0534 00 C4233 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRIO3K C4236 290 0572 00 LUF 208 SOV 56289 1960104 0050 1 4240 281 0773 00 010 10 100 72982 8005H9AADWSRIO3K C4245 281 0773 00
94. E Supplementa Information Input Signals Channel 1 vertical input Channel 2 vertical input Selected by CH1 and CH2 coupling switches in INT DC interface position Input R 50 Q Maximum input voltage 40 V peak 5 V rms Maximum input power 1 2 W Trigger input Selected by TRIGGER SOURCE switch in INT DC interface position Input R 50 Q when selected 25 Q when not selected Maximum input voltage 40 V peak Maximum input power 1 4 W 2 5 rms Z axis input Input Resistance approximately 1 5 kQ 5 V turns beam ON from OFF condition 5 V turns beam OFF from condition Input signals External delayed Gate input Ecl balanced input with the input resistance approximately 100 Q and operating between 5 V and ground Gate select input Open selects the internal gate Ground 1 kQ or less selects the external gate 27 Specification and Pertormance 5 504 Table 2 6 cont Characteristics Performance Requirements Supplemental Information Intensify input Ecl input low lt 3 4 intensifies A high or open circuit 24 0 V does not intensify Ecl circuit operates between 5 V and ground Output signals Channel 1 At least 50 mV div Bandwidth at least trigger output 30 MHz Output resistance lt 50 Q Triggered gate Ecl balance output operating between output 5 V and ground Holdoff out
95. F R1350 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W 01121 1015 R1351 321 0091 00 RES PXD FILM 86 6 OHM 1 0 125W 91637 MFF1816GB86R60F 81352 315 0102 00 RES PXD CMPSN 1K 5 0 259 01121 cB1025 R1355 315 0102 00 RES FXD CMPSN 1K OHM 5 0 25W 01121 1025 R1356 315 0122 00 RES FXD CMPSN 1 2K OHM 5 0 25W 01121 1225 1357 321 0054 00 RES FXD FILM 35 7 5 0 125 91637 MFF1816G35R70F R1360 315 0430 00 RES FXD CMPSN 43 OHM 0 258 01121 CB4305 R1361 315 0430 00 RES FXD CMPSN 43 OHM 5 0 25W 01121 4305 1362 321 0163 00 RES FXD PILM 487 1 0 125 91637 MFF1816G487ROF R1363 321 0163 00 RES PXD PILM 487 1 0 125 91637 MFF1816G487ROF R1364 321 0193 00 RES FXD FILM lK 1 0 1254 91637 MFF1816G10000F R1365 311 1947 00 RES VAR NONWIR 5K 20 0 258 12697 41722 R1370 315 0202 00 RES FXD CMPSN 2K OHM 5 0 25W 01121 2025 Replaceable Electrical Parts SC 504 Tektronix Serial Model No PartNo Dscont Name amp Description Code Part Number R1371 315 0104 00 RES FXD CMPSN 100K OHM 5 0 25W 01121 1045 R1372 315 0394 00 FXD CMPSN 390K OHM 5 0 25W 01121 3945 R1374 315 0153 00 RES FXD CMPSN 15K OHM 5 0 25W 01121 CB1535 R1380 315 0200 00 RES FXD CMPSN 20 OHM 5 0 25W 01121 2005 R1385 315 0511 00 RES FXD CMPSN 510 OHM 51 0 25W 01121 5115 R1390 315 0221 00 RES FXD CMPSN 220 OHM 5 0 25W 01121 2215 R1391 315 0102 00
96. FXD CMPSN 1K OHM 51 0 25W 01121 1025 R1392 315 0394 00 FXD CMPSN 390K OHM 5 0 25W 01121 CB3945 R1400 315 0560 02 FXD CMPSN 56 OHM 5 0 25W 80009 315 0560 02 81410 315 0101 00 PXD CMPSN 100 OHM 5 0 25W 01121 1015 Rl4ll 315 0100 00 0 OHM 5 0 25W 01121 1005 81415 323 0068 00 FXD FILM 49 9 OHM 11 0 504 75042 CECTO 49R90F Rl417 315 0361 00 0 258 01121 3615 81420 315 0100 00 0 OHM 5 0 250 01121 1005 R1423 315 0202 00 5 0 258 01121 CB2025 R1431 317 0330 00 RES FXD CMPSN 33 OHM 51 0 125W 01121 3305 21432 317 0330 00 RES FXD CMPSN 33 5 0 125 01121 BB3305 Rl435 315 0200 00 RES FXD CMPSN 20 54 0 25 01121 CB2005 R1438 315 0200 00 RES FXD CMPSN 20 5 0 25 01121 2005 81440 315 0750 00 RES FXD CMPSN 75 5 0 25 01121 7505 81442 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W 01121 CB1015 443 315 0103 00 RES FXD CMPSN lOK OHM 5 0 25W 01121 C31035 21444 315 0151 00 RES FXD CMPSN 150 OHM 5 0 25W 01121 CB1515 Rl445 311 1263 00 RES VAR NONWIR 1K 10 0 50 32997 3329 158 102 R1446 315 0202 00 RES FXD CMPSN 2K OHM 5 0 25W 01121 2025 81453 315 0392 00 RES PXD CMPSN 3 9K 5 0 25 01121 CB3925 81455 311 1466 00 RES VAR NONWIR 2K 20 0 50 01121 2 202 Rl464 321 0130 00 RES PXD FILM 221 19 0 125 91637 MFF1816G221ROF 81466 321 0130 00 RES FXD FILM 221 OHM 18 0 125W 91637 MPF1816G221R0F 81488 315 010
97. G CONNECTOR BODY CKT CD MT 3 PRONG RELAY REED SPST NO 5V RELAY REED SPST NO 5V RES FXD CMPSN 100K OHM 5 0 25W RES FXD CMPSN 240 OHM 5 0 25W RES FXD CMPSN 240 OHM 5 0 25W 050 1601 01 M44232 M44233 M51320 V800R OR V1000 REPLACEMENT For the following TEKTRONIX Oscilloscopes SC502 Serial Numbers 010100 8040670 SC504 Serial Numbers 8010100 BXXXXXX Cathode ray tube 154 0 59 01 repiaces cathode ray tubes pn 154 0730 05 and pn 154 0859 00 which are no longer available Use of the new crt requires severa circuit changes NOTE If the instrument seria number is greater than those listed above or this kit has already been installed disregard these instructions and use pn 154 0859 01 as a direct replacement ending seria number was not available at this printing Copyrignt 1984 21 JUN 1984 Tektronix inc Supersedes 4 1983 Ail Rights Reserve TEKTRONIX SCOPE MOBILE and are registered trademarks of Tektronix Inc SONY TEKTRONIX s registered trademark of Sony Tektronix Inc KIT PARTS LIST Ckt Number Quantity Part Number Description 890 W1395 1 EA 131 0556 00 BUS CONDUCTOR DUMMY RESISTOR V800 or V1000 1 EA 154 0859 01 ELECTRON TUBE CRT P3 1 EA pisane LABEL 050 1601 XX aer Q385 Q390 lt 9325 Fig 1 Partial F amp circuit board 050 1601 01 2 PART 1 SC502 ONLY INSTRUCTIONS WARNI
98. IIM 57 6 1 0 125 91637 MFF1816G57R60F R3328 315 0240 00 RES PXD CMPSN 24 OHM 51 0 25W 01121 CB2405 83336 311 1224 00 RES VAR NONWIR 500 20 0 50 32997 3386 04 501 83338 315 0562 00 RES FXD CMPSN 5 6K OHM 5 0 25W 01121 5625 R3344 315 0103 00 FXD CMPSN 10K OHM 5 0 25W 01121 1035 R3346 321 0239 00 FXD FILM 3 01K OHM 18 0 125W 91637 MFF1816G30100F 83347 315 0470 00 FXD CMPSN 47 OHM 5 0 25W 01121 4705 83348 315 0152 00 FXD CMPSN 1 5K OHM 51 0 25W 01121 CB1525 R3350 315 0201 00 FXD CMPSN 200 OHM 5 0 25W 01121 2015 R3352 315 0152 00 FXD CMPSN 1 5K OHM 5 0 25W 01121 1525 R3358 315 0621 00 FXD CMPSN 620 OHM 51 0 25W 01121 6215 R3362 315 0201 00 FXD CMPSN 200 OHM 5 0 25W 01121 CB2015 83364 315 0622 00 FXD CMPSN 6 2K OHM 5 0 25W 01121 6225 83365 315 0102 00 FXD CMPSN lK 5 0 254 01121 CB1025 83365 315 0102 00 FXD CMPSN 1K OHM 5 0 256 01121 1025 83367 315 0102 00 FXD CMPSN 1K OEM 5 0 25W 01121 CB1025 83369 315 0100 00 FXD CMPSN 10 5 0 254 01121 1005 83372 321 0326 00 RES PXD FILM 24 3K 1 0 125 91637 MFF1816G24301F 83373 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W 01121 1035 83375 321 0260 00 RES FXD FILM 4 99K OHM 1 0 125W 91637 MFF1816G49900F 83378 315 0362 00 RES PXD CVPSN 3 6K 5 0 25 01121 CB3625 Replaceable Electrical Parts SC 504 Tektronix Serial Model Mfr CktNo Part No
99. ISTOR 13103 7717 5N BLUE 230 1 RES VAR NONWIR SEE 2110 EPL ATTACHING PARTS 231 210 0583 00 1 NUT PLAIN HEX 0 25 32 X 0 312 INCH BRS 73743 2x20224 402 232 210 0046 00 1 WASHER LOCK INTL O 26 ID X 0 40 OD STL 78189 1214 05 00 0541C 233 386 3263 00 1 PL VAR RES MTG 80009 386 3263 00 234 337 2139 00 1 SHIELD ELEC INPUT COUPLING SWITCH 80009 337 2139 00 235 131 0608 00 25 CONTACT ELEC 0 365 L X 0 25 BRZ GOLD PL 22526 47357 236 214 0579 00 2 TERM TEST 0 40 INCH LONG 80009 214 0579 00 237 131 0566 00 2 LINK TERM CONNE 0 086 DIA X 2 375 INCH L 55210 1 2007 1 238 352 0086 00 1 HOLDER TOROID 0 50 INCH DIA 80009 352 0086 00 239 131 1857 00 1 TERM SET PIN 36 0 025 SQ PIN ON 0 1 CTRS 240 179 2546 00 1 WIRING HARNESS CHASSIS 80009 179 2546 00 241 352 0162 00 1 CONN BODY PL EL 4 WIRE BLACK 80009 352 0162 00 352 0162 02 1 CONN BODY PL EL 4 WIRE RED 80009 352 0162 02 352 0162 04 1 WIRE YELLON 80009 352 0162 04 352 0162 07 2 WIRE VIOLET 80009 352 0162 07 352 0162 09 2 WIRE WHITE 80009 352 0162 09 242 352 0163 08 1 WIRE GRAY 80009 352 0163 08 243 352 0169 01 lt 2 WIRE BROWN 80009 352 0169 01 352 0169 07 1 CONN BODY PL EL 2 WIRE PURPLE 80009 352 0169 07 244 352 0176 00 2 CONN BODY PL EL 4 WIRE DBL ROW BLACK 80009 352 0176 00 245 352 0177 00 1 CONN BODY PL EL 6 WIRE DBL ROW BLACK 80009 352 0177 00 198 3547 00 1 WIRE SET ELEC 80009 198 3547 00 246 131 0707 00 32
100. J Out position SOURCE CH 2 SLOPE TRIGGERING LEVEL TRIGGERING Midrange 4 Turn on the power module by pulling the power switch out NOTE If any work has been performed on the SC 504 power supplies check the 20 V 20 V 5 V and 5 V power supplies These supplies must be within their correct tolerances after turn on 5 Allow fifteen minutes for the SC 504 to warm up and stabilize NOTE The tabbed foldout pages labeled Adjustment Locations Figs 8 11 8 12 8 13 and 8 14 contain illustrations showing the location of each adjust ment in this procedure 1 Adjust Calibrator Output a Connect the digital voltmeter positive lead to the CAL jack located on the front panel Connect the voltmeter negative lead to chassis ground at the front panel Set the voltmeter to 2 V full scale b Shorttestpoints TP1110and TP1112 located on the Main Circuit board c ADJUST R3466 20 Volts located on the Trigger Board for a voltmeter reading of 0 6000 V This es tablishes the correct 20 V supply d Remove the short from TP1110 and TP1112 2 Power Supplies and Testpoints 20 2 TP3465 20 volts 3 TP3365 5 volts 3 TP2462 5 volts 3 TP2460 Check supply voltages with respective grounds 3 Adjust Crt Beam Current a Connect the positive lead of the dc voltmeter to the beam current testpoint TP1575 located on the Main Circuit board and the voltmeter negative lead to chassis ground Set
101. K that the period of the calibrator waveform is approximately 1 ms d Disconnect the bnc to pin adapter This comoletes the Performance Check Procedure Section 3 5 504 ADJUSTMENT PROCEDURE INTERNAL ADJUSTMENT PROCEDURE Adjustment is generally required after a repair has been made or after long time intervals in which normal aging of components may affect instrument accuracy To ensure instrument accuracy check the calibration every 2000 hours of operation or every six months if used infrequently Before complete calibration thoroughly clean and inspect this instrument as outlined in the service section of the Power Module manual The Power Module manual also contains information for general maintenance of this instrument including preventive component identifica tion and replacement etc Equipment Required NOTE Tektronix Inc provides complete instrument repair and calibration at local Field Service Centers and at the Factory Service Center Contact your Tektronix Field Office or representative for further informa tion Dangerous potentials exist at several points throughout this instrument When the instrument is operated with the covers removed do not touch exposed connections or components Disconnect power by removing the SC 504 from the TM 500 series power module before cleaning the instrument or replacing parts The SC 504 TRIGGERING SOURCE switch STBY position does not remove all power from th
102. L 2 PREAMPLIFIER CHANNEL SWITCHING FOCUS AND INTENSITY BOARD S862 Fama e 2 2296 17 Table 8 3 INDEX TO COMPONENT LOCATIONS SCHEMATIC CKT GRID CKT GRID CKT GRID NO Loc Loc NO Loc NO Loc C2132 12247 12 R2135 J6 R2320 C4 C2133 K5 L2347 L5 R2135 J6 R2321 E4 2137 D7 R2137 K3 R2323 45 C2145 L6 R2150 L3 R2328 J4 C2221 04 LR2321 C6 R2142 46 R2332 J5 C2233 J2 LR2431 C6 R2145 L6 R2333 C2236 K4 LR2433 C7 R2210 D4 R2336 K4 C2313 R2211 D4 R2337 K5 C2314 F4 R2212 D3 R2340 L4 C2320 C4 Q2131 J5 R2214 E3 R2347 L5 C2321 E4 Q2220 D3 R2220 C3 R2353 L6 C2325 E4 92230 J3 R2224 E3 R2410 F3 C2330 Q2235 K3 R2225 R2411 F4 C2333 J5 Q2242 L2 R2226 E4 R2413 F3 2335 07 Q2246 L2 R2227 J3 R2414 F4 C2341 14 Q2320 05 R2231 43 R2419 H3 C2343 14 Q2321 H3 R2233 J3 R2420 E4 C2410 F4 Q2322 H4 R2236 K3 R2421 H3 C2411 F3 Q2330 J5 R2237 K3 R2422 H4 C2412 92335 R2240 14 C2414 H3 Q2342 L5 R2242 L4 C2420 Q2346 L5 R2247 12 RT2120 D3 C2422 H4 R2253 L1 RT2210 D3 C2430 D6 R2120 J3 R2310 F4 R2121 J4 R2311 R2127 D4 R313 E3 CR2132 K4 R2130 J5 R2314 C4 CR2220 E3 R2132 J5 R2315 D4 2253 m 12247 240 e 02246 233 o 92235 02242 852224 FROM 71455 BOARDS 35V E 5 4 R24 5V sv LRe43 5 20
103. MFFl816G30100F R3246 315 0242 00 RES FXD CMPSN 2 4K OHM 5 0 25W 01121 2425 83248 315 0622 00 RES PXD CMPSN 6 2K OHM 5 0 25W 01121 CB6225 R3249 315 0201 00 RES FXD CMPSN 200 5 0 25 01121 CB2015 R3250 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W 01121 1015 R3251 315 0243 00 RES FXD CMPSN 24K OHM 5 0 25W 01121 2435 R3252 321 0241 00 RES FXD FILM 3 16K OHM 0 125W 91637 MFF1816G31600F R3253 315 0432 00 RES FXD CMPSN 4 3K OHM 5 0 25W 01121 CB4325 R3254 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W 01121 1035 R3255 31 0152 00 RES FXD CMPSN 1 5K OHM 51 0 25W 01121 1525 7 16 Replaceable Electrical Parts SC 504 Tektronix Serial Model No Mfr CktNo PartNo Dscont Name amp Description Code Mfr Part Number R3256 315 0821 00 RES PXD CMPSN 820 OHM 5 0 25W 01121 8215 83257 315 0302 00 RES FXD CMPSN 3K 5 0 25 01121 CB3025 R3258 315 0182 00 RES FXD CMPSN 1 8K OHM 5 0 25W 01121 1825 R3259 315 0202 00 RES PXD CMPSN 2K OHM 5 0 25W 01121 2025 R3260 315 0511 00 RES FXD CMPSN 510 OHM 5 0 25W 01121 5115 83262 315 0202 00 RES FXD CMPSN 2K OHM 5 0 25W 01121 2025 83264 315 0681 00 RES FXD CMPSN 680 OHM 5 0 25W 01121 6815 3266 315 0302 00 5 3 OHM 5 0 25W 01121 CB3025 R3268 315 0333 00 FXD CMPSN 33K OHM 51 0 25W 01121 3335 83273 321 0310 00 FXD FILM 16 5K OHM 1 0 125W 91637 MFF1816Gl6501F R3274 321 0260 00 FXD PILM 4 99K
104. NC PAKTRON DIV ELECTRA MIDLAND CORP MEPCO ELECTRA INC BOURNS INC TRIMPOT PRODUCTS DIV N L INDUSTRIES INC ELECTRONICS DEPT CENTRE ENGINEERING INC XCITON CORPORATION ELT INC GLOW LITE DIVISION SPRAGUE ELECTRIC CO BUSSMAN MFG DIVISION OF MCGRAW EDISON CO CENTRALAB ELECTRONICS DIV OF GLOBE UNION INC ERIE TECHNOLOGICAL PRODUCTS INC BECKMAN INSTRUMENTS INC HELIPOT DIV JFD ELECTRONICS COMPONENTS CORP TRW ELECTRONIC COMPONENTS IRC FIXED RESISTORS PHILADELPHIA DIVISION BELL INDUSTRIES INC MILLER J W DIV TEKTRONIX INC ELECTRA MIDLAND CORP MEPCO DIV BECKMAN INSTRUMENTS INC SWITCHCRAFT INC MALLORY CAPACITOR CO DIV OF P R MALLORY AND CO INC DALE ELECTRONICS INC Address City State Zip P O BOX 128 1201 2ND STREET SOUTH P O BOX 5012 13500 N CENTRAL EXPRESSWAY 17070 EAST GALE AVENUE 5005 E MCDOWELL RD PO BOX 20923 343 SNYDER AVENUE 464 ELLIS STREET 12515 CHADRON AVE LOWER WASHINGTON STREET 580 PLEASANT STREET 652 MITCHELL RD 2905 BLUE STAR ST 4561 COLORADO 900 FOLLIN LANE SE P O BOX 760 1200 COLUMBIA AVE P O BOX 787 2820 E COLLEGE AVENUE 5 HEMLOCK STREET BOX 698 2536 W UNIVERSITY ST P BOX 858 644 W 12TH ST 2500 HARBOR BLVD PINETREE ROAD 401 N BROAD ST 19070 REYES AVE P O BOX 5825 P BOX 500 22 COLUMBIA ROAD 2500 HARBOR BLVD 5555 N ELSTON AVE 3029 E WASHINGTON STREET P O BOX 372 BOX 6
105. NG To avoid electric shock hazard disconnect the instrument all other electrical equipment and the power source before proceeding The following instructions are for use by qualified service personne only To avoid personai injury do not pertorm any of the following procedure unless you are qualified to do so Gy 1 Refer to the Maintenance section of your SC502 Instruction Manual and perform the steps necessary to remove the crt 2 Remove the Geometry adjust potentiometer R897 see Fig 1 G 9 3 Replace C890 0 01 capacitor with the dummy resistor W890 from the kit 4 your insrument has a red violet wire soldered to the board at tne location labeled 70V in Fig 1 remove the wire from the board and remove it from the pin in the crt socket to which it connects 3 5 Refer to the Maintenance section of your SC502 Instruction Manual and per orm the steps necessary to replace the crt 6 Refer to the Calibration procedure in your instruction Manual recalibrate as neccessary 7 For future reference fasten the manual Modification Insert into your Instruction Manual 8 Remove the protective backing from the 050 1601 XX label and affix it to a clean area of the top rame section near the serial number tag 050 1601 01 page 5 R 1580 Fig 2 Partial Main circuit board 050 1601 01 page 4 PART 2 5 504 ONLY INSTRUCTIONS W
106. OMMET PLASTI 312 INCE DIA 80009 348 0067 00 358 0378 00 2 BUSHING SLEEVE PRESS MOUNT 80009 358 0378 00 366 1691 01 6 PUSH BUTTON GRAY EJECTOR PIN MARK 80009 366 1691 01 426 1206 01 6 FRAME PUSH BTN MOMENTARY GRAY 80009 426 1206 01 366 1559 00 1 PUSH BUTTON GRAY 80009 366 1559 00 426 1072 00 1 FPRAME PUSH BTN PLASTIC 80009 426 1072 00 105 0719 00 1 LATCE RETAINING PLUG IN 80009 105 0719 00 ATTACHING PARTS 213 0113 00 1 SCR TPG THD FOR 2 32 X 0 312 INCH PNH STL 83385 OBD W 105 0718 00 1 RELEASE LATCH 80009 105 0718 00 366 1690 00 1 KNOB LATCH 80009 366 1690 00 384 1513 00 1 EXTENSION SHAFT 8 94 L X 0 123 OD PLASTIC 80009 384 1513 00 376 0029 00 1 CPLG SHAPT RGD 0 128 ID X 0 312 OD X 0 5 L 80009 376 0029 00 213 0075 00 2 SETSCREW 4 40 X 0 094 INCH HEX SOC STL 70276 OBD dae 1 RES VAR NONWIR SEE R2197 EPL ATTACHING PARTS 210 0583 00 1 NUT PLAIN HEX 0 25 32 X 0 312 INCH BRS 73743 2 20224 402 210 0940 00 1 WASHER FLAT 0 25 ID X 0 375 INCH OD STL 79807 OBD 384 1136 00 1 95 INCH LONG 80009 384 1136 00 las 1 SEE R2497A B ATTACHING PARTS 210 0583 00 1 NUT PLAIN HEX 0 25 32 X 0 312 INCH BRS 73743 2 20224 402 210 0940 00 1 WASHER FLAT 0 25 ID X 0 375 INCH OD STL 79807 OBD Pieces 9 3 Replaceable Mechanical Parts SC 504 Fig amp Index Tektronix Serial Model No Mfr No PartNo Dscont Qty 12345 Name amp Description Code Mfr Part Number 1 40 384 0289 0
107. ONS 5 CKT GRID CKT GRID CKT GRID CKT GRID NO LOC NO LOC NO LOC NO LOC C1116 CR1372 E7 R1119 K8 R1610 H5 C1117 K8 CR1373 D7 R1210 K8 R1614 45 61270 F7 CR1374 D7 R1211 K8 R1615 J5 C1272 1380 F8 R1215 J8 R1620 H6 61273 F2 CR1383 C6 R1271 B8 R1621 H5 61282 F3 1384 C6 R1272 E7 R1622 5 C1283 F2 CR1390 J4 R1273 F7 R2110 K5 Ci285 F1 CR1488 F4 R1274 DT R2197 1286 F2 1610 F4 R1276 B8 R3248 1288 H8 CR1621 H5 R1280 F2 R3249 03 61290 H2 CR1622 J5 R1281 Fi 83251 1292 H7 CR3252 2 91282 F3 83255 02 1372 F7 CR3258 D2 R1283 18 R3290 02 1373 07 R1284 H8 R3344 1374 E8 DS1620 J5 12850 J7 R3346 03 Ci380 C7 DS1621 J5 R1285A 15 R3347 03 1385 C6 R1285B K6 R3348 Ci390 Hs 1285 H7 R3350 03 Ci3931 45 L1270 F6 R1286 F1 R3352 Ci392 11278 1288 48 1395 4 11292 B6 R1289 F2 1396 03340 R1290 F2 Ti385 06 1399 5 R1292 F2 71475 61470 R1293 H2 61488 H5 91116 K8 R1370 E8 1489 H5 Q1210 K8 R1371 D6 1110 K8 1570 ES Q1280 F3 R1372 C7 TP1115 K8 1575 F5 01288 F3 R1380 07 1575 4 63245 C4 01288 H2 R1385 C6 Q1378 D7 R1390 4 0130 81391 H4 01270 CR1110 K8 01381 C5 R1392 F4 01590 F4 CR1280 J8 03244 03 R1488 F5 CR1281 F8 03247 R1576 F7 CR1296 H2 03248 D3 R1578 E5 v1000 K2 CR1297 H3 Q3252 D2 R1580 4 CR1370 F7 R1585 M3 CR1371 F6 R1115 K8 R1590 5 VR1282 B7 R1116 K8 R1595 VR1490 F5
108. P FXD CER DI 100PF 5 500V 72982 871 536 2 1017 1395 281 0773 00 DI 0 01UF 10 100V 72982 BOOSH9AADW5R103K 1396 290 0272 00 CAP FXD ELCTLT 47UF 208 50V 56289 196DA76X0050F2 1399 281 0773 00 DI 0 01UF 10 100V 72982 800SH9AADWSRLO3K C1410 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRlO3K C1411 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRLO3K 1420 281 0773 00 CAP FXD CER 1 0 010 10 100 72982 BOOSH9AADW5R103K 1425 283 0154 00 CAP FXD CER DI 22PF 5 50V 72982 8111 061 062207 1429 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRI03K C1430 281 0214 00 CAP VAR CER DI 0 5 3PF 400V 80031 2222 801 96138 C1445 281 0772 00 CAP FXD CER DI 0 0047UF 10 100V 72982 8005H9AADWSRA72K 1447 281 0207 00 CAP VAR PLSTC 2 18PF 100V 80031 10 218 1457 281 0759 00 CAP FXD CER DI 22PF 10 100V 72982 390 049 5 0220 C1459 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRlO3K C1488 283 0043 00 CAP FXD CER DI 0 0068UF 3000V 56289 41 186 Cl489 283 0043 00 CAP FXD CER DI 0 0068UF 3000V 56289 41 186 C1525 283 0168 00 CAP FXD CER DI 12PF 5 100V 72982 8111 100 0601207 C1527 281 0140 00 CAP VAR CER DI 5 25PF 100V 72982 518 002 5 25 C1530 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRIO3K C1540 290 0580 00 CAP PXD ELCTLT 0 27UF 20 50V 56289 1960274 0050 1 C1547 281 0809 00 CAP PXD CER DI 200PF 5
109. R SW SEE EPL ATTACHING PARTS 211 0244 00 1 SCR ASSEM WSHR 4 40 X 0 312 INCH PNH STL 78189 SIS 1 SWITCH PB ASSY SEE S3511A B C EPL 3 SWITCH PB ASSY SEE 53512 EPL 343 0495 05 2 CLIP SWITCE FRONT 7 5MM XS UNIT 80009 343 0495 05 ATTACHING PARTS 210 3050 00 3 EYELET METALLIC 0 218 L X 0 059 OD BRS 07707 SE 27 iip ba 343 0499 03 2 CLIP SWITCH 7 5 MM 4 UNIT 80009 343 0499 03 ATTACHING PARTS 210 3050 00 3 EYELET METALLIC 0 218 L X 0 059 OD BRS 07707 SE 27 Wao 214 0579 00 2 TERM TEST 0 40 INCH LONG 80009 214 0579 00 131 0566 00 1 LINK TERM CONNE 0 086 DIA X 2 375 INCH L 55210 1 2007 1 131 1425 00 1 CONTACT SET ELE R ANGLE 0 150 L STR OF 36 22526 65521 136 1 BOARD ASSY HORIZ DEFL SEE 4 ATTACHING PARTS 211 0244 00 1 SCR ASSEM WSER 4 40 X 0 312 INCE PNH STL 78189 OBD WS e 136 0577 00 1 CONNECTOR RCPT 6 CONTACT 22526 65001 015 136 0260 02 1 SOCKET PLUG IN 16 CONTACT LOW CLEARANCE 82647 951601 220 0665 00 1 NUT PLAIN HEX SLFLKG 4 40 X0 25 PLSTC 23050 OBD 5 211 0213 00 1 SCREW MACHINE 4 40 X 0 312 INCH PNH NYLON 23050 OBD lt 129 0455 00 1 SPACER POST 0 305 L W 4 40 THD THRU BRS 80009 129 0455 00 672 0653 00 1 BOARD ASSY TRIGGER W CAM SWITCH 80009 672 0653 00 ATTACHING PARTS 212 0109 00 1 SCREW MACHINE 8 32 X 0 188 PLH STL 83385 OBD S a M Ee 1 DRUM ASSY CAM 5 SEE 53315
110. Reject The HF REJ accepts signals below 50 kHz HF REJ attenuates signals above 50 kHz Triggering Slope The TRIGGERING SLOPE switch determines whether the trigger circuit responds on the positive going or negative going portion of the trigger signal When the SLOPE switch is in the positive going position the display starts with the negative going portion of the waveform When several cycles of a signal appear in the display the setting of the SLOPE switch is often unimpor tant However if only a certain portion of a cycle is to be displayed correct setting of the SLOPE switch is impor tant to provide a display that starts on the desired slope of the input signal Trigger Level The TRIGGERING LEVEL control determines the voltage level on the triggering waveform at which the sweep is triggered When the LEVEL control is set in the region the trigger circuit responds as the triggering waveform shifts in a positive going direction When the LEVEL control is set in the region the trigger circuit responds as the triggering signal changes level in a negative going direction To set the LEVEL control first select the trigger SOURCE CPLG and SLOPE Then set the LEVEL contro fully clockwise and rotate it counterclockwise until the display starts at the desired point Trigger Mode Automatic Triggering The AUTO position AUTO button pushed in of the TRIGGERING MODE switch provides a stable display when the LEVEL c
111. S ROAD PO BOX 6688 8700 BROOKPARK RD 47 16 AUSTEL PLACE 2100 S O BAY ST P O BOX 500 34 FOREST ST 2530 CRESCENT DR 100 COLUMBUS STREET P O BOX 1360 4444 WEST IRVING PARK RD City State Zip TOKYO 149 JAPAN HARRISBURG PA 17105 DALLAS TX 75222 MT VERNON NY 10553 SHELTON CT 06484 GARDEN GROVE CA 92642 SANTA MONICA CA 90406 CLEVELAND OH 44125 DALLAS TEXAS 75234 NEW CUMBERLAND PA 17070 MT VERNON NY 10553 SPRING MILLS PA 16875 HARTFORD CT 06101 WATERBURY CT 06720 CAMBRIDGE MA 02138 CINCINNATI OH 45206 ATTLEBORO MA 02703 HARTFORD CT 06110 ELGIN IL 60120 CLEVELAND OH 44101 LONG ISLAND CITY NY 11101 MILWAUKEE WI 53207 BEAVERTON OR 97077 ATTLEBORO MA 02703 BROADVIEW IL 60153 HAMDEN CT 06514 STATESVILLE NC 28677 CHICAGO IL 60641 Fig amp Index No 1 1 2 10 16 7 18 19 20 21 22 23 24 25 26 27 29 30 31 32 33 Replaceable Mechanical Parts SC 504 Tektronix Serial Model No Mfr PartNo Dscot 12345 Name amp Description Code Mfr Part Number 337 1399 04 2 SHIELO ELEC SIDE 80009 337 1399 04 200 1837 01 1 COVER PLUG IN TOP amp BOTTOM 80009 200 1837 01 ATTACHING PARTS 211 0008 00 2 SCREW MACHINE 4 40 X 0 25 INCH PNH STL 83385 OBD Sts PLUS 200 1780 01 1 COVER HV BOTTOM ALUMINUM 80009 200 1780 01 ATTACHING PARTS 211 0071 00 2 4 40 X 0 375 1NCH
112. SEMICOND DEVICE SILICON 30V 1SOMA 07910 1N4152 CR1373 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR1374 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 184152 CR1380 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 144152 1383 152 0398 00 SEMICOND DEVICE SILICON 200V 1A 80009 152 0398 00 CR1384 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR1390 152 0061 00 SEMICOND DEVICE SILICON 175V 100MA 80009 152 0061 00 CR1430 152 0246 00 SEMICOND DEVICE SILICON 400PIV 200MA 80009 152 0246 00 CR1457 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CRl1464 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CRl466 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 7 6 Replaceable Electrical Parts SC 504 Tektronix Serial Model No Mfr Ckt No PartNo Dscont Name amp Description Code Mfr Part Number CR1488 152 0061 00 SEMICOND DEVICE SILICON 175V 100MA 80009 152 0061 00 CRISSS 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 1610 152 0429 00 SEMICOND DEVICE SILICON S000V 10MA 14099 SA3282 CR1621 152 0242 00 SEMICOND DEVICE SILICON 225V 200MA 12969 NDP341 CR1622 152 0242 00 SEMICOND DEVICE SILICON 225V 200MA 12969 NDP34l 2132 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR2163 152 0141 02 SEMICOND DEVICE SILICON 30V 150MA 07910 1N4152 CR2220 152 0650 00 SEMICOND DEVICE VVC 11 5PF 30PIV 04713 BB105B CR2475 152 0141 02 SEMICOND DEVICE
113. T for SC502 Serial Numbers B010100 8040670 SC504 Serial Numbers 010100 BXXXXXX Installed in SN Date This modification insert is provided to supplement the manual for the above listed product s The information given in this insert supersedes that given in the manual Copyright 1984 by Tektronix Beaverton Oregon Printed in the United States of America rights reserved Contents of this insert may not be reproduced any form without the permission of the copyright owner INFORMATION The Parts Replacement Kit 050 1601 XX provided parts and instructions to replace the crt in SC502 5 504 oscilloscopes The new crt pn 154 0859 01 replaced crt s 154 0730 05 and 154 0859 00 which longer available The use of the new crt required a number of circuit changes ending serial number was available at this printing 050 1601 01 page 1 REPLACEABLE ELECTRICAL PARTS CKT NO A2 C890 R897 00 w890 CKT NO A2 C1395 R1580 1000 W1395 PART NUMBER 670 3760 04 DELETE DELETE 154 0859 01 131 0566 00 PART NUMBER 670 5110 02 DELETE DELETE 154 0859 01 131 0566 00 5 502 OSCILLOSCOPE DESCRIPTION CKT BD ASSY FOCUS AND INTENSITY ELECTRON TUBE CRT P31 INTERNAL SCALE 805 CONDUCTOR DUMMY RESISTOR SC504 OSCILLOSCOPE DESCRIPTION CKT BD ASSY FOCUS AND INTENSITY ELECTRON TUBE CRT P31 INTERNAL SCALE
114. T PLUG IN TOP LEFT Mtr Code 80009 70276 80009 80009 78189 80009 83385 80009 80009 73743 80009 80009 80009 80009 73743 80009 73743 80009 80009 80009 73743 80009 80009 80009 83385 83693 83385 80009 78189 80009 80009 80009 80009 22526 22526 80009 71279 22526 80009 73803 80009 80009 83385 80009 80009 Part Number 376 0029 00 131 0907 00 214 2666 00 200 2105 00 352 0492 00 214 2587 01 2 12161 402 214 1126 01 214 1752 00 401 0379 00 105 0749 00 2 12161 402 401 0381 00 2 12161 402 214 1126 01 214 1752 00 401 0379 00 2 12161 402 401 0380 00 376 0182 00 105 0750 00 1028 337 2428 00 OBD 337 2429 00 334 2363 00 334 3299 00 214 0579 00 75060 44642 129 0455 00 572 4822 01 0516 47357 131 0604 00 950802 198 3548 00 672 0652 00 214 1061 00 426 1245 01 9 7 Replaceable Mechanical Parts SC 504 amp Index Tektronix Serial Model No Part Dscont Qty 12345 Name amp Description Code Mfr Part Number i BOARD ASSY INCLUDES 1 ASSY CAM 5 SEE 52375 EPL ATTACHING PARTS 207 211 0244 00 4 SCR ASSEM WSHR 4 40 X 0 312 INCH PNH STL 78189 win V ares 208 200 1441 00 1 COVER CAM SW 7 ELEMENTS 80009 200 1441 00 SW INCLUDES 209 131 1248 00 1 CONTACT ELEC SHAPT GND 8000
115. TE it may be necessary to repeat parts g and h compromising the settings of R2321 R2310 C2321 C2313 R2242 C2341 C2343 C1447 R1445 and C1527 to obtain optimum transient response for both channels m Disconnect the calibration generator 13 Adjust Sweep Mag Register a Set the DISPLAY switch to CH1 and the SECONDS DIV switch to 1 m b Connect 5 ms time markers from a properly ter minated time mark generator to the CH 1 connector Adjustment Procedure SC 504 Rotate the TRIGGERING LEVEL control to obtain a stable display d Pull the X10 HORIZ MAG switch e Use the horizontal POSITION control to align the leading edge of any one of the time marks to the vertical graticule center line f Push in the X10 HORIZ MAG switch X1 position g ADJUST R1155 Mag Reg located on the Main board to line up the leading edge of the unmagnified time mark with the vertical graticule center line Pull the X10 HORIZ MAG switch and check for proper alignment of the time mark i Repeat steps d through h until there is no interaction between the X1 and X10 MAG positions 14 Adjust Horizontal Amplifier X1 Gain Set the SECONDS DIV switch to 2 m b Set the CH 1 VOLTS DIV switch to 5 Connect the 0 2 ms time markers see note from a properly terminated time mark generator to the CH 1 input connector NOTE If 0 2 ms time markers are unavailable connect 0 1 ms markers and reference the display
116. TEN Midrange DISPLAY ALT HORIZ Position Midrange SECONDS DIV 2m CAL HORIZ MAG cw and out 4 Trigger gt signal TP3136 ee Trigger 1 1 comparator 1 13 03238 N N N M NM 4 2V ed gate pin 4 03238 43 4V Auto gate 4 2 V 1 Sweep gate ov input pin 6 U3158 ov 01242 7105 V End sweep n n n pin 12 U3158 iming ramp 03158 11 A A AA w L A L AA A Free run timing pin 3 U3158 Horiz signal pin 9 U4345 Left crt 59 vJ deflection plate Complementary signal at right crt plate Blanking Z axis 500 350 base 03244 1100 Z axis drive 34 01289 Collector 65 Alt drive ___ 2296 13 Fig 8 1 TRIGGER BOARD CONNECTOR REAR VIEW ASSIGNMENTS FUNCTION CONTACT Channel 1 Trigger 288 Ground Channel 1 Trigger Out 27B Triggered Gate Out 26B Triggered Gate 25B Gate Select in 24B External Gate In 238 External Gate In 22B Holdoff 218 Holdotf 208 intensity In 198 18B 17B 16B Interface Trigger In 158 Ground Interface Trigger In 148 Exters REV A FEB 1979 Fig 8 2 28A ASSIGNMENTS CONTACTS FUNCTION A Gate Out Ground A Gate Out External Z Axis In Ground Exter
117. TOR SILICON NPN 80009 151 0190 00 02131 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 92135 151 0341 00 TRANSISTOR SILICON NPN 07263 5040065 Q2162 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 02165 151 0190 00 TRANSISTOR SILICON NPN 80009 151 0190 00 92180 151 0188 00 TRANSISTOR SILICON PNP 01295 2N3906 02220 153 0609 00 SEMICOND DVC SE SILICON PNP 80009 153 0609 00 02230 92235 151 0221 00 TRANSISTOR SILICON PNP 80009 151 0221 00 02242 151 0447 00 TRANSISTOR SILICON NPN 80009 151 0447 00 02246 151 0446 00 TRANSISTOR SILICON NPN 80009 151 0446 00 02260 151 0341 00 TRANSISTOR SILICON NPN 07263 5040065 02280 151 0188 00 TRANSISTOR SILICON PNP 01295 2N3906 92320 153 0609 00 SEMICOND DVC SE SILICON PNP 80009 153 0609 00 02321 151 0221 00 TRANSISTOR SILICON PNP 80009 151 0221 00 02322 151 0221 00 TRANSISTOR SILICON PNP 80009 151 0221 00 92330 92335 151 0221 00 TRANSISTOR SILICON PNP 80009 151 0221 00 Q2342 151 0447 00 TRANSISTOR SILICON NPN 80009 151 0447 00 02346 151 0446 00 TRANSISTOR SILICON NPN 80009 151 0446 00 02365 151 0341 00 TRANSISTOR SILICON NPN 07263 5040065 02383 151 0188 00 TRANSISTOR SILICON PNP 01295 2N3906 Q2469 151 0103 00 TRANSISTOR SILICON NPN 04713 2N2219A 02473 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 02476 151 0342 00 TRANSISTOR SILICON PNP 80009 151 0342 00 03132 151 0216 00 TRANSISTOR SILICON PNP 80009 151 0216 00 93134 151 0333 00 TRANSISTOR SILICON NPN SEL FROM MPS918 80009 151 0333 00 03135 1
118. TRH STL 83385 210 0851 00 2 WASEER FLAT 0 119 ID X 0 375 INCH OD STL 12327 imis bern 200 2063 00 1 COVER PLUG IN BOTTOM 80009 200 2063 00 ATTACHING PARTS 211 0008 00 2 SCREW MACHINE 4 40 X 0 25 INCE PNE STL 83385 OBD 366 1391 01 3 KNOB GY 0 081 10 0 28 00 0 32 H 80009 366 1391 01 ee 7 EACH KNOB INCLUDES 213 0725 00 2 SETSCREW 3 48 X 0 095 INCH HEX SOC STL 74445 OBD 366 1077 01 3 KNOB GY 0 127 0 5 00 0 531 H 80009 366 1077 01 7 EACH KNOB INCLUDES 213 0246 00 1 SETSCREW 5 40 X 0 093 INCH L HEX SOC 71159 366 1023 07 3 KNOB GRAY 0 127 ID 0 392 OD 0 466 80009 366 1023 07 7 EACH KNOB INCLUDES 213 0246 00 1 SETSCREW 5 40 0 093 INCH L HEX SOC 71159 366 1031 08 2 KNOB GY CAL W ARROW 80009 366 1031 08 EACH KNOB INCLUDES 213 0246 00 1 SETSCREW 5 40 X 0 093 INCH L HEX SOC 71159 OBD 366 1733 01 2 KNOB W SKIRT 80009 366 1733 01 366 1405 04 1 KNOB WEITE CAL 80009 366 1405 04 213 0048 00 1 SETSCREW 4 40 X 0 125 INCH HEX SOC STL 74445 OBD 366 1735 00 1 KNOB GRAY 0 252 0 72 OD 0 79 H 80009 366 1735 00 213 0153 00 2 SETSCREW 5 40 X 0 125 INCH HEX SOC STL 74445 OBD 220 0633 00 1 NUT PLAIN KNURL 0 25 28 X 0 25 INCH L BRS 80009 220 0633 00 355 0170 00 1 STUD SHOULDEREI 32 X 0 40 INCH IONG 80009 355 0170 00 Lao 2 CONNECTOR RCPT SEE J100 AND J200 EPL oo 1 CONNECTOR RCPT SEE 73200 EPL 210 0255 00 1 TERMINAL LUG 0 391 ID INT TOOTH 80009 210 0255 00 348 0067 00 1 GR
119. TRIPLE LINE RECEIVER 80009 156 0860 00 e 7 19 Replaceable Electrical Parts SC 504 Tektronix Serial Model No Mfr PartNo Dscont Name amp Description Code Mfr Part Number 04345 155 0124 00 MICROCIRCUIT LI HORIZONTAL PREAMPL 80009 155 0124 00 1000 154 0730 05 ELECTRON TUBE CRT P31 INT SCALE 80009 154 0730 05 VR1248 152 0227 00 SEMICOND DEVICE ZENER O 4W 6 2V 59 80009 152 0227 00 VR1282 152 0405 00 SEMICOND DEVICE ZENER 18 15V 54 80009 152 0405 00 VR1490 152 0285 00 SEMICOND DEVICE ZENER 0 4W 62V 5 04713 1N980B VR2420 152 0309 00 SEMICOND DEVICE ZENER 1W 6 2V 5 04713 1N3828A VR2429 152 0309 00 SEMICOND DEVICE ZENER 1W 6 2V 5 04713 1N3828A VR3465 152 0227 00 SEMICOND DEVICE ZENER 0 4W 6 2V 5 80009 152 0227 00 VR3479 152 0590 00 SEMICOND DEVICE ZENER 18V 5 AT 7 04713 1N967B VR4120 152 0265 00 SEMICOND DEVICE ZENER 0 4W 24V 5 04713 1N970B 7 20 SC 504 DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS Symbols and Reference Designators Electrical components shown on the diagrams are in the following units unless noted otherwise Capacitors Values one or greater picofarads pF Values less than one are in microfarads uF Resistors Ohms Graphic symbols and class designation letters are based on ANSI Standard Y32 2 1975 Logic symbology is based on ANSI Y32 14 1973 in terms of positive logic Logic symbols depict the logic function performed and may differ from the manufacturer s data Abbrevia
120. Tektronix Inc P O Box 500 Beaverton Oregon 97077 070 2296 00 TEKTROND INSTRUCTION MANUAL Serial Number First Printing FEB 1978 WARRANTY This Tektronix instrument is warranted against defective materials and workmanship for one year Any questions with respect to the warranty should be taken up with your Tektronix Field Engineer or representative All requests for repairs and replacement parts should be directed to the Tektronix Field Office or representative In your area This will assure you the fastest possible service Please inckrde the instrument type number or part number and serial numbex with all requests for parts or service Copyrlght 1978 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 i TEKTRONIX SCOPE MOBILE TELEQUIPMENT and 2 are registered trademarks of Tektronix Inc Printed in U S A Specification and price change privileges are reserved 1 SECTION 2 REV APR 1978 TABLE CONTENTS Page InO allon ie sis sacs Sa eS Ss INSTRUCTIONS introduction cos 1 1 instellstion 5 4 s al poate 1 1 Controls and Connectors
121. V 72982 8005A2AADC1G201J 2330 281 0618 00 CAP FXD CER DI 4 7PF 0 5PF 200V 72982 374 001C0H0479D C2333 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSR1O03K 7 4 Replaceable Electrical Parts SC 504 Tektronix Serial Model No Mfr PartNo Eff Dscont Name amp Description Code Mfr Part Number 2335 281 0775 00 DI 0 1UF 20 50V 72982 800559 250104 C2341 281 0158 00 CAP VAR CER D1 7 45PF 50V 73899 2 5006 C2343 281 0158 00 CAP VAR CER D1 7 45PF 50V 73899 DVJ 5006 C2410 281 0814 00 DI 100PF 10 100V 72982 8005A9AADC1G10lK 2411 281 0814 00 FXD CER DI 100PF 10 100V 72982 8005A9AADClGlOlK C2412 281 0772 00 CAP FXD CER DI 0 0047UF 10 100V 72982 8005H9AADWSRA72K C2414 290 0283 00 CAP FXD ELCTLT 0 47UF 10 357 56289 162D474x9035BC2 C2420 290 0724 00 FXD ELCTLT 330UF 20 6V 90201 TDC337M006WSH C2422 290 0512 00 PXD ELCTLT 22UF 20 157 56289 1960226 0015 1 2430 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 8005H9AADWSRlO3K C2448 290 0512 00 FXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 2450 290 0512 00 CAP PXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 C2483 281 0785 00 CAP FXD CER DI 68PF 108 100V 72982 390049X5P0680K C3129 290 0512 00 CAP PXD ELCTLT 22UF 20 15V 56289 1960226 0015 1 C3130 290 0534 00 10 20 35 56289 1960105 0035 1 C3139
122. W 91637 MFF1816G51100F R4233 315 0102 00 RES FXD CMPSN 1K OHM 5 0 25W 01121 681025 R4237 301 0223 00 RES FXD CMPSN 22K OEM S 0 50W 01121 2235 84238 321 0284 00 RES FXD FILM 8 87K OHM 1 0 125W 91637 MFF1816G88700F R4242 321 0284 00 RES FXD FILM 91637 MFF1816G88700F R4243 321 0289 00 RES FXD FILM 10K OHM 1 0 125W 91637 MFF1816G10001F R4245 315 0470 00 RES FXD CMPSN 47 OHM 5 0 25W 01121 4705 R4248 321 0231 00 RES PXD FIIM 2 49K OHM 1 0 125W 91637 MFF1816G24900F 4249 315 0472 00 RES FXD CMPSN 4 7K OHM 5 0 25W 01121 4725 R4336 321 0201 00 RES PXD FILM 1 21K OHM 1 0 125W 91637 MFF1816G12100F R4339 315 0472 00 7 OHM 5 0 25W 01121 4725 R4340 321 0271 00 16 49K 1 0 1258 91637 MFF1816G64900F R4341 321 0081 00 RES FXD FILM 68 1 OHM 1 0 125W 91637 MFF1816G68RLOF R4342 321 0274 00 RES FXD FILM 6 98K OEM 1 0 125W 91637 MFF1816G69800F R4344 321 0271 00 RES PXD PILM 6 49K OHM 1 0 125W 91637 MFF1816G64900F R4346 321 0230 00 RES PXD PIIM 2 43K OHM 1 0 125W 91637 MFF1816G24300F R4348 321 0201 00 RES FXD PILM 1 21K OHM 1 0 125W 91637 MFF1816G12100F RT2120 307 0181 00 RES THERMAL 100K OHM 10 4MW DEG 15454 10 104 220 RT2210 307 0127 00 RES THERMAL 1K OHM 10 50157 201596 51110 260 1811 00 SWITCH SLIDE DPDT 0 5A 125VAC DC 82389 C56206L2 1130 263 1164 00 ACTR ASSY CAM S TIME DIV 80009 263 1164 00 51160 1325 263 1167 00 ACTR ASSY CAM S ATTENUATOR 80009 263 1167 00 1525 263 1167 00
123. XD CER DI 100PF 10 1007 72982 8005A9AADCIGlOlK 1238 281 0207 00 VAR PLSTC 2 18PF 100V 80031 HT10EA 218 1240 283 0706 00 91PP 1PF 5007 00853 015 5 910 0 C1241 281 0792 00 1 82 10 100 72982 390049 5 20 C1242 281 0773 00 CAP PXD CER DI 0 01UF 104 100v 72982 B8005H9AADWSR1O3K 1250 281 0762 00 CAP PXD CER 1 27 20 100 72982 390 049X5P0270M 1270 290 0164 00 CAP PXD ELCTLT 1UF 50 108 150V 56289 300105 150 2 C1271 290 0766 00 CAP FXD ELCTLT 2 2UF 50 10 160V 56289 5020232 1272 281 0791 00 CAP PXD CER DI 270PF 10 100V 80009 281 0791 00 1273 290 0522 00 CAP FXD ELCTLT 1UF 208 50V 56289 196 105 0050 1 1282 290 0534 00 CAP FXD ELCTLT 1UF 20 35V 56289 1960105 0035 1 1283 283 0178 00 CAP FXD CER DI 0 1UF 80 208 100V 72982 8131 145 1042 1285 283 0348 00 PXD CER 0 5 0 1 100 51642 100 100 NPO 508B 1286 281 0773 00 CAP PXD CER 01 0 010 10 100 72982 BOOSH9AADW5R103K 1288 283 0167 00 CAP PXD CER DI 0 1UF 10 100V 72982 8131N147 104K 1290 283 0167 00 FXD CER DI 0 1UF 10 100V 72982 81313147 C 104K C1292 283 0044 00 CAP PXD CER DI 0 001UP 3000V 72982 3903BW002Y55102M C1310 281 0773 00 PXD CER DI 0 01UF 10 100V 72982 BOOSH9AADW5R103K 281 0773 00 CAP FXD CER DI 0 01UF 108 100V 72982 8005H9AADW5R103K C1320 281 0773 00 CAP FXD CER DI 0 01UF 10 100V 72982 B005H9AADWSRIO3K C1330 2
124. XD FILM 110 OHM 1 0 125W 91637 MFF1816GllOROF R2240 321 0097 00 RES FXD FILM 100 1 0 125 91637 MFF1816G100ROF R2242 311 0605 00 RES VAR NONWIR 200 OHM 10 0 50W 80740 62 54 3 R2247 315 0241 00 RES PXD CMPSN 240 OHM 5 0 25W 01121 2415 R2253 308 0800 00 RES FXD WW 470 OHM 1 4W 91637 NS2 B470ROF 82261 321 0306 01 RES FXD FILM 15K OHM 0 5 0 125W 91637 MFF1816G15001D R2262 321 0764 01 RES FXD FILM 5 09K OHM 0 5 0 125W 91637 MFF1816G50900D R2263 315 0202 00 RES FXD CMPSN 2K OHM 51 0 25W 01121 CB2025 R2268 315 0103 00 RES PXD CMPSN 10K OHM 51 0 25W 01121 1035 R2273 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W 01121 1035 R2275 321 0225 00 RES FXD FILM 2 15K OHM 1 0 125W 91637 MFF1816G21500F R2310 311 1224 00 RES VAR NONWIR 500 OHM 208 0 50W 32997 3386F T04 501 R2311 311 1224 00 RES VAR NONWIR 500 OHM 209 0 50W 32997 3386F T04 501 Replaceable Electrical Parts SC 504 Tektronix Serial Model No PartNo Dscont Name amp Description Code Mfr Part Number R2313 315 0331 00 RES FXD CMPSN 330 OHM 5 0 25W 01121 CB3315 R2314 321 0018 00 RES FXD FILM 15 OHM 11 0 125W 91637 MPF1816G15ROOF R2315 321 0111 00 RES FXD FILM 140 OHM 1 0 125W 91637 MFF1816G140ROF R2320 321 0086 00 RES FXD FILM 76 8 OHM 1 0 125W 91637 MFF1816G76RB0F R2321 311 1258 00 RES VAR NONWIR 50 10 0 50 32997 3326P T02 500 R2323 321 0082 00 RES FXD FILM 69 8 OHM 1 0 125W 91637 1816 6
125. action generates the sweep ramp The negative going ramp voltage decreases at a rate determined by the timing resistor and timing capacitor combination until reaching approximately 10 5 V At the end of the sweep the ramp control current turns 01240 If the ramp voltage attempts to go above 0 V CR1247 conducts This causes the currentthrough Q1240 to equal the current through the timing resistor plus the timing capacitor discharging current This action clamps the integrator output to 0 V until the next sweep turns off Q1240 In the Schmitt trigger circuit the ramp outputs through emitter follower 03368 is inverted through Q3366 The positive going ramp is then emitter coupled to pin 18A of the rear interface connector When the ramp turns Q3368 off steering current through Q3367 creates a negative going signal at the base of Q3266 Transistor Q3266 outputs a positive going end of sweep eos signal to pin 46 12 of U3158 This output signal also feeds the Z axis Diagram 8 to initiate blanking of the crt The alternate drive signal outputs via pin 3 of J2176 to the channel switch logic Q2165 Diagram 2 In the XY mode Q1250 turns on disabling the ramp CR3359 conducts disabling the eos comparator and Q3152 turns disabling the sweep gates Horizontal Preamplifier and Output Amplifier The horizontal preamplifier circuit is contained withina single IC U4345 A negative going sweep ramp i
126. ant current source and provides temperature compensation for Q3520 Trigger Generator The triggering signal from source follower Q3520 feeds a differential pair composed of Q3523 and Q3522 Tran sistor Q3524 is a current source for Q3523 Transistor 03523 forms a voltage to current converter 03523 and 03522 are cascoded and protected by diodes CR3525 and CR3520 The output signal at the collector of Q3135 drives the Peak Detector circuitry and the trigger com parator circuitry composed of Q3235 Q3234 and their associated components When MODE AUTO switch depressed the triggering signal enters the amplifier circuit composed of Q3132 and Q3134 for the peak circuitry and Q3144 and Q3145 for the peak The peak detector circuits sample the and signal levels and are adjusted by dc level shift potentiometers R3114 and R3112 Peak sensing capacitors C3130 and C3140 hold peak voltage levels which are applied to the TRIGGERING LEVEL control via buffer level shifters U3125 and U3120 The LEVEL control is adjusted between the two voltage levels equal to the most negative and most positive peaks of the triggering signal With the AUTO pushbutton out the triggering LEVEL control imits set by 3129 R3126 and R3124 and R3120 The trigger level is set by the TRIGGERING LEVEL control buffered by U3148 and sent to the base of trigger comparator 03234 If the voltage at the base of 03234 is higher current flows through
127. ave Generator ratio signal isolation trig sensi tivity amp range phasing Input Traceable to NBS 20 pF and Vertical amp input Tektronix part no normalizer 1 067 0538 00 Termination 50 Q with bnc connectors Output termination Tektronix part no for signal generator 011 0049 01 Coaxial 50 Q with bnc connectors Provides signal Tektronix part cable interconnection 012 0057 01 Dual input connectors Rejection ratio 7 Tektronix part no coupler and phasing 067 0525 01 Adapter m Calibrator Tektronix part no Bnc to pin jack 013 0084 01 Requires TM 500 series power module REV A MAR 1979 2 9 Specification and Performance Check SC 504 Preliminary Control Settings Mainframe power ON CH1 VOLTS DIV 1 CAL cw DC GND AC INT DC DC CH2 VOLTS DIV 1 CAL cw DC GND AC INT DC DC SECONDS DIV 5m PULL X10 HORIZ MAG CAL pushed in cw TRIGGERING MODE AUTO CPLG DC all buttons out SOURCE CH1 SLOPE LEVEL centered DISPLAY CH1 normal brightness FOCUS sharp trace 1 Check the Vertical Bandwidth 0 C to 35 C The front panel control settings are the same as the preliminary settings with exception of the following CH 1 VOLTS DIV 10 2 VOLTS DIV 10 TRIGGERING SOURCE LINE SECONDS DIV 1 Connect a 50 kHz sine wave signal from the leveled sine wave generator through 50 Q coaxial cable with a 50 Q termination t
128. c NO Loc NO Loc 2161 02 02383 E7 R2465 2257 C3 02469 2 R2466 C7 C2448 16 Q2473 5 R2468 6 C2450 J3 02476 J5 R2469 5 C2483 07 R2482 07 BS R2483 07 R1110 K3 82485 E7 R2158 E4 R2486 E7 CR2163 R2163 D2 R2487 2475 J5 R2261 C2 R2488 E2 CR3494 B5 R2262 D4 R2489 2 CR3496 R2263 D2 R3496 B5 28 2361 7 2460 J7 051110 4 R2362 J2 R2363 2 2462 12 R2384 D2 F347B 85 R2385 D7 02263 02 F3482 B5 R2386 4 U2480 D7 R2387 2 R2390 45 Q2260 D4 R2391 J5 VR2420 93 02365 R2463 VR2429 46 23385 Re384 R2387 100 00 R2163 33K B2 KH MES TP2462 5 P2466 22566 45v Rese2 5 3 th rn 1870 neo gt 4 2 TS Re261 GJ E lt gt sv Ceaso 15 0K ul VR2420 JSIOLOCATED ON ad MAINFRAME 6 2V m 5 Rmo creies Q2260 R2386 2 0K vom ON 11 5V 5 02476 d 17 5 VAC 124 58 CRE47S Re390 02473 62K Rees LOCATED ON MAINFRAME 4 LOCATED ON vR2429 T Ue460 YIO MAINFRAME JHO we h 6 2v Su n gt _ 5 02363 reage lt T OJ Resse 466 2246 in
129. connectors Tektronix part no 010 6105 03 Low freq comp Vertical amp response Vertical amp response Tektronix part no Preliminary Procedure 1 Check that the power is OFF in the TM 500 series power module 2 Connect the nominal line selector block of the power module to the correct line selector pins 120 Vacor 220 V ac Also check that the regulating range selected includes the input line voltage See the Installation Section of the Power Module Manual Connect the power module to the line voltage source 3 Remove the SC 504 Oscilloscope side top and bottom covers and connect the oscilloscope to the power module using the plug in extensions Observe the caution signs on the plug ins when making the connections Align the plug in correctly when making the connection to the short board NOTE The performance of this instrument can be checked at any temperature from 0 C to 50 C Make any adjustment at a temperature of 25 C 5 C a Set the following controls FOCUS Fully counterclockwise INTEN Fully counterclockwise TRIG VIEW Midrange DISPLAY CH1 POSITION vertical CH1 Midrange CH1 Midrange 3 2 011 0069 02 CH1 VOLTS DIV 0 4 DC GND AC INT DC DC CH2 VOLTS DIV 50 DC GND AC INT DC GND POSITION horizontal Midrange SECONDS DIV 0 5 ms PULL X10 HORIZ Fully clockwise and MAG CAL pushed in TRIGGERING MODE AUTO Pushed in CPLG AC Pushed in AC LF REJ Out position HF RE
130. ct longer during each cycle This increases the average current to T1475 and T1385 which causes Q1380 to saturate due to the positive feedback provided by the one turn winding of T1385 C1373 charges during the conduction of Q1380 e At the time pin 5 of T1475 is most negative C1373 starts discharging cutting off CR1372 and turning on CR1373 to provide base currentto Q1378 When Q1378 conducts the base current of Q1380 reduces causing the collector of 01380 to go more positive The action of the one turn winding of T1385 speeds up the turn off of Q1380 The current through T1385 and energy stored within the coil now flows through T1475 via Q1381 and CR1383 Tran sistor Q1381 conducts until T1385 is completely discharg ed With 0 V across the base emitter junction of Q1381 the primary of T1475 now swings more positive than the input supply voltage When 01380 is off 01270 charges C1374 to a voltage which when combined with voltage from the one turn feedback winding of T1385 causes Q1380 to conduct completing the cycle Initially at instrument turn on the reference supply goes positive slowly depending upon the charging current supplied to C1270 which is controlled by R1283 Once the voltage between CR1371 and L1270 becomes more positive than 20 V CR1280 conducts and the reference supply is held at 20 6 V If a short occurs across or in the secondary of T1475 the voltage at the junction of CR1371 and L1270 goes toward zero
131. down transistor for the amplifier The output voltage from the amplifier provides the drive signal to control the crt intensity level through the control grid supply The output voltage level of the Z axis amplifier is determined by the voltage drop across R1286 with reference to the voltage level at the summing point for the amplifier base of Q1280 The current through R1286 is determined by the input current froma combination of the INTEN control setting and the sweep blanking Diodes CR1296 and CR1297 act as clamps for protec tion to the Z axis amplifier in case of a high voltage short Transistors Q3244 and Q3248 form acomparator with the sweep blanking signal setting the reference level To unblank the crt the voltage level at the base of Q3244 must be more positive than the level at the base of Q3248 High Voltage Regulation The regulator circuit composed of Q1380 Q1381 Q1378 U1270 and associated components provides the driving current necessary to energize transformer T1475 Regulation is accomplished by sampling the 2 kV across the voltage divider composed of R1285C and R1285D and comparing it to a 20 6 V reference The junction of R1285C and R1285D as well as pin 3 of U1270 is nominally 0 V When the 2 kV supply becomes less negative the junction of R1285C R1285D and pin 3 of 01270 becomes more positive The more positive output of U1270 results in increased charging current for C1374 which causes 01380 to condu
132. e front panel FOCUS and internal Astig controls have been incorporated for arriving at an optimum crt display The FOCUS potentiometer R2110 provides the Correct voltage for the second anode of the crt Both the FOCUS and Astig controls are adjusted for optimum spot size and shape to provide the proper electro static lens configuration in the crt The Geom control R1580 varies the positive level on the horizontal deflection plate shields to control the overall geometry of the display The Trace Rotation control R1585 adjusts the dc current through the beam rotation coil L2156 to align the display with the horizontal graticule lines Low Voltage Power Supplies The low voltage power supply circuit provides the operating power for the oscilloscope system Electronic regulation is used where necessary to provide stable low ripple output voltages Power is applied to the supply by means of the TRIGGERING SOURCE switch after the instrument has been inserted into the mainframe The instrument is in all positions of this switch except when in the STBY position 20 V Supply The 20 V supply besides providing power to circuitry throughout the instrument is a reference voltage source to establish operating levels for the feedback regulators in the 20 V 5 V and 5 V supplies The 20 V supply consists of VR3465 Q3470 Q3476 Q3485 Q3484 Q3472 Q3488 and uses a series pass transistor in the mainframe Current to t
133. e oscilloscope LIST OF TEST EQUIPMENT REQUIREMENTS Description Performance Requirements Applications Example TM 500 Power All steps TEKTRONIX TM 503 module 504 TM 506 Digital Range 0 to 50 V accuracy Calibrator TEKTRONIX DM 501 voltmeter 0 1 Power supplies Digital Multimeter Beam current Common mode Trigger balance Time mark 28105 in 1 2 5 sequence Geometry TEKTRONIX TG 501 generator Sweep mag Time Mark Generator Gain Sweep timing Fast ramp comps Calibration Amplitude calibration 50 mV Low freq comp TEKTRONIX PG 506 generator to 5 V accuracy 0 25 into Input capacitance Calibration Generator 1 Output squarewave at Gain approximately 1 kHz Transient response Input Traceable to NBS 20 pF and normalizer 1 Input Tektronix part no 067 0538 00 Requires TM 500 series power module 31 Adjustment Procedure SC 504 LIST OF TEST EQUIPMENT REQUIREMENTS cont Description Performance Requirements Applications i Example Termination 50 Q with bnc connectors Output termination Tektronix part no for signal generator 011 0049 01 Coaxial 50 Q with bnc connectors Provides signal inter Tektronix part no cable connection 012 0057 01 Plug in All steps Tektronix part no extension 067 0645 02 2 required 10X attenuator 50 Q with bnc connectors 2X attenuator 50 Q with bnc
134. ected to contact 18A must have an input resistance greater than 100 The output resistance is ap proximately 500 Q Channel 1 Trigger Out This signal is electrically tied with the channel 2 vertical input signal via a coaxial jumper cable Switch the GND AC INT DC switch to INT DC Interface contact 28B furnishes a portion of the channel 1 vertical signal which is also supplied to the trigger circuitry The signal amplitude is atleast 50 mV division of crt display referenced to 0 V when driving a 50 Q load Channel 2 Vertical In To use this feature the coaxial jumper cable tied with the channel 1 triggerout must be disconnected vertical input signal from an input impedance of 50 Q can be connected to the input of the channel 2 vertical amplifier via interface contact 16A by switching the DC GND AC INT DC switch to INT DC Channel 1 Vertical In A vertical input signal can be connected to the input of the channel 1 vertical amplifier via interface contact 14A by switching the DC GND AC INT DC switch to INT DC The input impedance is 50 Q 5 6 Interface Trigger In An interface input signal can be connected to the input of the trigger pickoff circuitry via interface contact 15B The input impedance 50 when selected 25 when not selected This is accomplished by rotating the TRIGGERING SOURCE switch to the INT position Triggered Gate Out and Triggered Gate Out The signal at contact 26B is a
135. er the magnifier sweep rate should be 45 div 10 4 5 div Figure 1 4 shows the same signals as used in Fig 1 3 but with the X10 HORIZ MAG on Operating Instructions SC 504 Channel 1 Reference Horizontal Difference i Fig 1 4 High resolution phase difference measurement With a horizontal difference of six divisions and sub stituting the given values Phase difference 6 divisions X 4 5 div 27 Phase difference 27 Common mode Rejection When signals contain undesireable components common mode rejection can eliminate or reduce these components from the measurement Example The displayed signal contains an undesired line frequency component see Fig 1 5 1 Connect the signal to the CH 1 input connector 2 Connect the line frequency signal to the CH 2 input connector 3 Set the DISPLAY switch to 1 2so that the channel 2 display is opposite in polarity 4 Adjust the channel 2 CAL variable control to make the channel 2 display amplitude about equal to the undesired component of the channel 1 display 5 Set the DISPLAY switch to 1 2 and re adjust the channel 2 CAL variable control for maximum rejection of the undesired signal component see Fig 1 5 Ch 1 Signal With Unwanted Frequency 1 Resultant Signal 1738 2296 6 Fig 1 5 Common mode rejection measurement
136. escription by a colon Because of space limitations an Item Name may sometimes appear as incomplete For further Item Name identification the U S Federal Cataloging Handbook H6 1 can be utilized where possible ABBREVIATIONS ACTR ACTUATOR PLSTC PLASTIC ASSY ASSEMBLY Qrz QUARTZ CAP CAPACITOR RECP RECEPTACLE CER CERAMIC RES RESISTOR CIRCUIT RF RADIO FREQUENCY COMPOSITION SEL SELECTED CONN CONNECTOR SEMICOND SEMICONDUCTOR ELCTLT ELECTROLYTIC SENS SENSITIVE ELEC ELECTRICAL VAR VARIABLE INCAND INCANDESCENT ww WIREWOUND LED LIGHT EMITTING DIODE XFMR TRANSFORMER NONWIR NON WIREWOUND XTAL CRYSTAL Replaceable Electrical Parts SC 504 Mfr Code 00853 01121 01295 02111 04713 05091 07263 07910 12697 12969 14099 15454 16546 19396 19701 32997 50157 51642 53184 53944 56289 71400 71590 72982 73138 73899 75042 76493 80009 80031 80740 82389 90201 91637 CROSS INDEX MFR CODE NUMBER TO MANUFACTURER Manufacturer SANGAMO ELECTRIC CO S CAROLINA DIV ALLEN BRADLEY COMPANY TEXAS INSTRUMENTS INC SEMICONDUCTOR GROUP SPECTROL ELECTRONICS CORPORATION MOTOROLA INC SEMICONDUCTOR PROD DIV TRI ORDINATE CORPORATION PAIRCHILD SEMICONDUCTOR DIV OF FAIRCHILD CAMERA AND INSTRUMENT CORP TELEDYNE SEMICONDUCTOR CLAROSTAT MFG CO INC UNITRODE CORPORATION SEMTECH CORP RODAN INDUSTRIES INC U S CAPACITOR CORP CENTRALAB ELECTRONICS DIV IILINOIS TOOL WORKS I
137. etime less than 3 5 ns into 50 0 PG 501 5 V output pulse 3 5 ns Risetime 107 Risetime less than 3 0 ns into 50 Q 108 10 V output pulse 1 ns Risetime PG 502 replaces 107 108 PG 502 5 V output 108 10 V output 111 PG 502 Risetime less than 111 Risetime 0 5 ns 30 1 10 ns 10 250 ns Pretrigger pulse Pretrigger pulse delay delay PG 508 replaces 114 115 2101 ot replacement equipment is the same or better than equipment being replaced PG 506 replaces 106 067 0502 01 PG 506 Positive going trigger output sig nal at least 1 V High Amplitude out put 60 V PG 506 Does not have chopped feature 106 Positive and Negative going trigger output Signal 50 ns and 1 V High Amplitude output 100 V 0502 01 Comparator output can be alternately chopped to a refer voltage SG 503 replaces 190 190A 190 191 067 0532 01 SG 503 Amplitude range 5 mV to 5 5 V SG 503 Frequency range 250 kHz to 250 MHz 1908 Amplitude range 40 mV to 10 V p p 0532 01 Frequency range 65 MHz to 500 MHz 56 504 067 0532 01 50 504 Frequency range 0532 01 Frequency range 245 MHz to 1050 MHz 65 MHz to 500 MHz 067 0650 00 TG 501 replaces 180 180A TG 501 Trigger output 180A Trigger pulses 1 10 slaved to marker 100 Hz 1 10 and output from 5 sec 100 kHz Multiple through 100 ns One
138. ght of the crt center graticule line with the positioning controls 1 ADJUST R1160 X Gain located on the Main board for exactly five major graticule divisions between two displayed dots g Disconnect the calibration generator 20 Adjust TRIG VIEW Center a Set the SECONDS DIV switch to 2 m 37 Adjustment Procedure SC 504 b Push in the TRIGGERING MODE AUTO pushbut ton Set the TRIGGERING SOURCE switch to LINE d Depress the DISPLAY TRIG VIEW pushbutton and hold it during the following adjustments e ADJUST R3336 Trig View Bal located on the Trigger board so that the start of the waveform trace on the crt display is at the horizontal graticule center line 1 Switch the TRIGGERING SLOPE switch to and recheck the starting position of the display TRIG VIEW pushbutton still depressed 9 Compromise the final adjustment of R3336 between the display starts for both the and SLOPE switch positions 38 21 Adjust Triggering Peak and Peak a Set the SOURCE switch to the LINE position b Depress the TRIG VIEW pushbutton switch while making the following adjustments c Rotate the TRIGGERING LEVEL control to the side d ADJUST R3110 Peak located on the Trigger board to position the bottom of the display waveform to one half major graticule division above the point where the waveform just loses triggering e Rotate the TRIGGERING LEVEL control to the side f
139. graticule divisions 12 Adjust Vertical Amplifier Transient Response a Connect a fast rise positive going signal from a PG 506 Calibration Generator or equivalent through a X10 attenuator and a 50 Q termination into the CH 2 input connector 5 b Set the DISPLAY switch to CH2 and the VOLTS DIV switch to 10 m Adjustment Procedure SC 504 c Set the CH 2 DC GND AC INT DC switch to DC d Setthe calibration generator for a period of 1 us and adjustthe generator fora five division squarewave display e Set the SECONDS DIV switch to 1 and pull the X10 HORIZ MAG switch 10 ns div f Set the TRIGGERING SOURCE switch to CH 2 and rotate the TRIGGERING SLOPE control to the position and observe the rising edge of the waveform g ADJUST R2242 R2310 C2313 and C2341 all located on the F and I board with C1349 and R1345 located on CH 2 Main board for the fastest flat top waveform in the first 100 ns h ADJUST R2321 C2321 and C2343 located on the F and board for the fastest flat top waveform in the first 30 ns It may be necessary to repeat part g to achieve the specified aberrations and risetime i Reconnect the calibration generatoroutputsignalto the CH 1 input connector Set the DISPLAY switch and TRIGGERING SOURCE switch to CH 1 k Set the CH 1 VOLTS DIV switch to 10 m 1 ADJUST C1447 R1445 and C1527 located on CH 1 Main board to obtain the specified aberrations and risetime for CH 1 NO
140. he load is delivered by the series pass transistors The 20 V is established by the drop across CR3466 R3462 and R3461 which is compared to the voltage drop across VR3465 and the emitter base junction of Q3470 The feedback path is through Q3485 to the base of Q3472 Any variation in output voltage due to ripple change of current through the load etc is immediately transmitted 48 to the base of Q3472 which in turn drives the base of the series pass transistor in the mainframe The conduction of Q3472 nullifies this voltage variation thus maintaining a steady output The output of the supply is set to exactly 20 V by the 20 Volts adjust R3466 20 V Supply The 20 V supply consists of Q3369 Q3475 Q3480 03372 03482 03375 03474 anda series pass mainframe transistor The operation of this supply is very similar to the 20 V supply The supply voltage is established by comparing the voltage at the mainframe transistor output to the voltage drop across R3464 and the emitter base junction of Q3369 The feedback path is through Q3480 to the base of Q3372 which drives the base of the mainframe transistor Any variation in output voltage is sensed at the base of Q3372 and nullified thus maintaining a steady output voltage When the SOURCE switch is in the STBY position the bases of Q3478 and Q3474 are at ground This cuts off the 20 V and 20 V supplies removing power from the instrument 5 V Supply Power for the
141. how true time relationship time difference measurements can be used 15 Operating Instructions SC 504 Algebraic Addition The 1 2 position of the DISPLAY switch can be used to display the difference between two signals or for common mode rejection to remove an undesired signal The 1 2 position of the DISPLAY switch can be used to display the sum of two signals The following general precautions should be observed 1 Donotexceed the input voltage rating of the SC 504 2 Do not apply signals that exceed an equivalent of approximately six times the VOLTS DIV switch setting For example with a VOLTS DIV switch setting of 0 5 the voltage applied to that channel should not exceed about 3 V Larger voltages may distort the display 3 Use CH 1 and CH 2 POSITION control settings that most nearly position the signal of each channel to midscreen when viewed in either the CH1 or CH2 positions of the DISPLAY switch This ensures the greatest dynamic range in the 1 2 and 1 2 mode of operation 4 For similar response from each channel set the CH 1 and CH 2 DC GND AC INT DC switches to the same position Deflection Factor The amount of vertical deflection produced by a signal is determined by the signal amplitude the setting of the VOLTS DIV switches and the setting of the VOLTS DIV variable controls The calibrated deflection factors in dicated by the VOLTS DIV switches apply only when the VOLTS DIV variable controls are
142. ion of deflection Page 2 13 Sweep rate accuracy table DELETE all of the linearity information along the bottom of the table PAGE 3 or 8 propuct _ SC 504 ________ C1 478 DATE 4 21 78 DESCRIPTION Page 3 2 CHANGE the Tektronix part no of the 10X attenuator to 011 0059 02 in the LIST OF TEST EQUIPMENT REQUIREMENTS REMOVE from the control settings list of Step 3a the reference to TRIG VIEW Midrange At the bottom of the list change CH 1 to CH 2 Page 3 4 REPLACE the procedure of Step 9 Adjust Low Frequency Compensation with the following procedure a Set the DISPLAY switch to CHOP b Set the CH 1 input coupling switch to GND then position the display to mid screen c Set the TRIGGERING SOURCE switch to CH 2 d Set the CH 2 VOLTS DIV switch to 10 m and set input coupling to DC e Connect a fast rise positive going signal from the PG 506 Calibration Generator through a 2X attenuator and a 50 0 termination network to the CH 2 input connector f Set the calibration generator for a period of 100 Hz Set the SECONDS DIV switch to 1 m Adjust the generator for a pulse amplitude of 8 major graticule divisions i Rotate the TRIGGERING LEVEL control to obtain a stable display j ADJUST R2311 Lf Comp located on the F amp I Board to obtain the minimum CH 1 display amplitude Disconnect the calibration generator and all cables Page
143. ion shield filter 2 and the implosion shield spring 1 Disconnect the FOCUS extension shaft 3 from the focus potentiometer d Loosen the black screw 4 Remove the three screws holding the rear panel bracket and remove the rear panel bracket Remove the screw 5 holding the horizontal deflec tion circuit board Disconnect the two horizontal crt deflection pin leads Lift the board straight up disconnec ting the square pins at the bottom f Disconnect the trace rotation coil from the F and circuit board by removing the two pin connector Remove the two crt vertical deflection pin leads Unsnap the anode connector from the circuit board clip 6 Disconnect the ert end male end of the anode connector from the remainder of the connector Momentarily touch the crt end of the anode connector to chassis ground to dis charge any voltage g Remove the two screws 8 that secure the high voltage cover and remove the cover 7 Remove the eight screws 9 holding the rear panel 10 and remove the panel h Disconnect the crt socket 11 then remove the crt shield with the crt inside Disconnect the delay line connectors as the tube is removed 2 Crt Replacement a Install the front crt support spacer 12 into the rear bezel opening of the front subpanel 13 b Install the crt in the crt shield then install the assembly in the oscilloscope and reconnect the delay line During installation be careful not
144. ipment A Refer to the manual High voltage Protective ground A terminal which terminal must be connected to earth ground prior to making any other connections to the equipment Ground the Power Module To avoid electric shock the power module must be properly grounded Refer to the power module manual for grounding instructions Do not use the power module power cord grounding conductor as the sole signal return current conductor Use the Proper Power Cord To avoid electric shock and fire use only the power cord and plug specified for your power module Use only a power cord that is in good condition For detailed information on power plugs see the power module manual Use the Proper Fuse To avoid electric shock and fire use only the fuses specified in your power module and plug in manuals and which are identical in the following aspects a Physical Size 3AG etc b Type Slow Blow Fast Blow etc c Voltage Rating d Current Rating Do Not Operate in an Explosive Atmosphere To avoid explosion do not operate this instrument in an area where flammable gas or fumes are present Such operation could cause an explosion Exercise Care When Handling the Crt Breaking the crt may cause an implosion Wear protec tive clothing and safety glasses when handling the crt When storing the crt put it in a protective carton or set it face down in a protected location on a smooth surface with a soft
145. itch to CH 2 and the CH 2 VOLTS DIV switch to 10 Change the CH 2 DC GND AC INT DC switch to GND f Change the CH 1 VOLTS DIV switch to 5 m g Change the CH 1 DC GND AC INT DC switch to DC h CHECK that CH 1 displays more than0 1 major graticule division of amplitude 2 12 i Disconnect all cables and return the front panel controls to the preliminary settings 8 Check the External Trigger Sensitivity The front panel control settings are the same as the preliminary settings with the following exceptions TRIGGERING SOURCE EXT SECONDS DIV Connect a60 mV peak to peak 30 MHz signal from the leveled sine wave generator through a 50 Q coaxial cable with a 50 termination to the EXT TRIG input connector b Depress the TRIG VIEW switch and rotate the TRIGGERING LEVEL control CHECK for a stable display d Change the generator frequency to 80 MHz with a 150 mV peak to peak amplitude e Depress the TRIG VIEW switch and rotate the TRIGGERING LEVEL control f CHECK for a stable display g Disconnect all cables and return the front panel controls to the preliminary settings 9 Check the Triggering Level Range The front panel control settings are the same as the preliminary settings with the following exceptions CH 1 VOLTS DIV 4 2 VOLTS DIV e a Connect a 50 kHz sine wave from a leveled sine wave generator through a 50 Q coaxial cable with a 50 Q termination to the CH
146. itry also provides blanking pulses for the crt Theory of Operation SC 504 The sweep control circuit is composed of two OR gates Transistors 03263 03265 and 03262 output the sweep and logic gates to U3158 Transistors 03258 03260 Q3261 and Q3262 cause a current flow which initiates the sweep see Fig 4 3 Sweep Gates The Trig Gate is a low level signal developed from U3238 4 Diagram 4 This signal turns 03262 causing 03256 to initiate the sweep gate to pin 6 of 03158 The logic gate feeds pin 5 of U3158 when Q3154 conducts The auto gate is a low level signal from U3158 developed at pin 6 Depressing the TRIGGERING AUTO MODE switch grounds pin 4 of U3158 If no logic gate is received at pin 5 of U3158 fora period of time determined by R3162 and C3164 the circuitry in U3158 outputs from pin 6 a negative going square wave This square wave turns Q3260 on when the bases of 03261 and 03264 are at a higher level than the threshold voltage on the base of Q3258 A blanking signal is developed from Q3258 which is positive going and outputs to the Z axis circuitry The external gate must be an ECL input signal at the rear interface connector and inputs to the gate enable circuit This circuit consists of Q3268 and Q3269 The gate select signal from pin 24 on the rear interface connector causes Q3268 to conduct Q3269 turns off thus enabling the external gate This gate turns on Q3264 causing current flow through
147. l POSITION control until the voltmeter indicates 0 V 50 mV d Disconnect the voltmeter e Reconnect the positive lead of the DC voltmeter to either connection listed in step b and the voltmeter negative lead to chassis ground f ADJUST R2137 CM located the F amp Board until the voltmeter indicates between 4 05 and 3 95 V 9 Disconnect the voltmeter 9 Adjust Low Frequency Compensation Set the DISPLAY switch to CH 2 34 b Set the SOURCE switch to CH 2 Set the CH 2 VOLTS DIV switch to 10 m with the DC GND AC INT DC switch set to DC d Connect a fast rise positive going signal from a PG 506 Calibration Generator or equivalent through a X10 attenuator and a 50 Q termination network into the CH 2 input connector e Adjustthe generator fora pulse amplitude of 5 major graticule divisions f Setthecalibration generator for a period of 100 Hz 9 Set the SECONDS DIV switch to 1 m h Check for a flat top of the displayed waveform i Rotate the TRIGGERING LEVEL control to obtain a stable display j ADJUST R2311 Lf Comp located on the F amp I Board to obtain a flat top of the displayed waveform k Disconnectthecalibration generator and all cables 10 Adjust CH 1 and CH 2 Input Capacitance For Hybrid Attenuators a Set the CH 1 DC GND AC INT DC switch to DC b Set the VOLTS DIV switch to 2 Setthe TRIGGERING SOURCE switch to CH 1 and connect a 20 pF normalize
148. lications This position allows measurement of the dc component of a signal and must be used to display signals below about 50 Hz to avoid the attenuation that would occur using ac coupling The GND position provides a ground reference at the input without the need to externally ground the probe The signal applied to the probe is internally disconnected from the input circuit and connected to ground through a resistor The amplifier input circuit is held at ground potential In the GND position connecting the input signal to ground through a r sistor forms a precharging network This network allows the input coupling capacitor to charge to the average dc voltage level of the signal applied to the probe Since this takes place in the GND position of DC GND AC INT DC switch any large voltage transients accidentally generated will not be applied to the amplifier input The pre charge network also provides a measure of protection to the external circuit by reducing the current levels that can be drawn from the external circuitry during capacitor charging The following procedure should be used when the probe tip is connected to a signal source having a different level than previously applied and using AC coupling 1 Before connecting the probe tip to a signal source set the DC GND AC INT DC switch to GND 2 Touch the probe tip to oscilloscope chassis ground Wait several seconds for the input coupling capacitor to discharge 3
149. mat under the faceplate Avoid Excessive Moisture Circuit boards and components must be dry before applying power to prevent damage from arcing Do Not Operate Without Covers To avoid personal injury do notoperate the instrument without the panels or covers installed Do not perform any servicing other than that described in the operating instructions unless you are a qualified serviceperson Do Not Service Alone Do not attempt internal service or adjustment unless another person capable of rendering first aid and cardio pulmonary resuscitation is present SC 504 Oscilloscope SC 504 Introduction The SC 504 Oscilloscope is a general purpose 80 MHz dual trace oscilloscope designed to operate in two compartments of a TM 500 series power module It has a high writing speed a wide range of sweep rates a wide range of deflection factors and versatile triggering in cluding auto triggering and trigger view Recommended probes for use with the SC 504 are the P6062A and P6105 The P6062A probe has selectable 1X or 10X attenuation while the attenuation of the P6105 is 10X 2 POWER 27 MODULE Section 1 SC 504 OPERATING INSTRUCTIONS Installation CAUTION The SC 504 is calibrated and ready to use when received Referring to Fig 1 1 install the SC 504 the power module and turn the TRIGGERING SOURCE controlto CH 1 to apply power Check that the PWR ON indicator on the front panel illuminates
150. mately 60 Alt u Every other sweep REV A MAR 1979 2 3 Specification and Performance Check SC 504 Table 2 2 TRIGGERING Characteristics Performance Requirements Supplemental information Minimum Minimum Trigger sensitivity Source Signal Required Source Signal Required DC coupling dc b 30 MHz to Interface 35 mV 80 mV 30 MHz 80 MHz CH1 CH2 0 4 div 1 5 div External 60 mV 150 AC coupling Requirements increase below approximately 50 Hz AC LF REJ coupling Requirements increase below approximately 10 kHz HF REJ coupling Requirements increase above approximately 50 kHz External triggering level range Normal mode At least 1 4 V External triggering Input Input R and C 1 mQ 10 paralleled by approxi mately 24 pF when selected 750 kQ 10 paralleled by approxi mately 28 pF when not selected Maximum input voltage Peak dc Peak 250 V Peak to peak ac component 250 V at 1 kHz or less derates to 5 V at 100 MHz Auto mode Sweep free runs in the absence of a triggering signal TRIGGER LEVEL range is reduced to approximately the peak to peak range of the triggering signal Internal and external trigger sensitivity reduced below approximately 100 Hz Single Sweep Triggering requirements same as for normal sweep When triggered sweep generator Produces one sweep only
151. nal Z Axis In Light Out 5 Volts Ramp Out Ground Channel 2 Vertical In Channel 2 Vertical In Ground Channel 1 Vertical Channel 1 Vertical In 2296 14 INTERFACE BOARD CONNECTOR REAR VIEW ASSIGNMENTS FUNCTION ASSIGNMENTS CONTACTS CONTACTS FUNCTION Collector Lead of PNP Series Pass 11B Base Lead of PNP Series Pass 10B 9B 8B Collector Lead of NPN Series Pass 7B Emitter Lead of PNP Series Pass Emitter Lead of NPN Series Pass Base Lead of NPN Series Pass 2296 15 Fig 8 3 Table 8 1 INDEX COMPONENT LOCATIONS SCHEMATIC GRID GRID GRID GRID NO Loc NO Loc NO Loc NO Loc C110 F2 HY1430 3J6 R1360 J7 R1548 K1 1411 F4 HY1430 4J6 R1361 J8 R1549 C1420 F2 1430 526 R1362 8 R1554 4 Ci430 HY1520 B2 1363 18 R1556 13 1445 11 HY1530 F2 R1364 K7 R1557 L3 1446 15 1400 R1560 K4 C1447 12 R1410 R1565 F4 C1459 16 K3386 E5 R1411 F4 R2182 E6 C1525 K2 R1415 B5 R2183 D6 C1527 K2 R1420 F2 R2185 E6 61530 H4 L1564 B7 R1423 K4 R2186 E6 61540 11566 86 91435 2497 5 1547 Ki 13170 R1438 R3178 07 1548 13 13172 6 R1440 F4 R3184 E7 Ci556 B7 R1442 J5 R3185 E7 C1558 B6 1443 F4 93186 E6 63178 Q1435A 81444 F4 R3188 F7 C3189 E6 01435 F3 R1445 12 R3286 5 EZ 1458 S1525A B2 81430 01460 17 81455 K2 15258 CR1457 46 01462 K7 R1464 K7 22
152. ng becomes visually perceptible the CH 1 and 2 positions of the TRIGGERING SOURCE switch two signals are displayed showing time relationship If the signals are not time related one of the signals displayed will be unstable Dual Trace Operation Chopped Mode The CHOP position of the DISPLAY switch produces a display that is electronically switched between channels Generally the CHOP mode provides the best display at sweep rates slower than about 0 5 ms div or whenever dual trace single shot phenomena are to be displayed At faster sweep rates the chopped switching becomes apparent and may interfere with the display Proper external triggering for the chopped mode of operation is obtained when using external triggering from a signal that is time related to either signal This provides the same result as triggering internally from channel 1 or channel 2 Two signals that are time related can be displayed in the chopped mode showing the true time relationship However of the signals are not time related one signal displayed will appear to shift its horizontal position with consecutive sweeps Two single shot transient or random signals that occur when the time interval determined by the SECONDS DIV switch ten times the displayed rate can be compared using the chopped mode To obtain a usable display the sweep must be triggered from the vertical channel displaying the event that occurs first Since the signals s
153. o the CH 1 bnc connector b Adjustthe generator for a display of exactly 6 major graticule divisions C Set the generator frequency to 10 MHz d CHECK that the displayed trace is at least 4 2 major divisions in amplitude Change the CH 1 VOLTS DIV switch to 5 f Return the generator frequency to 50 kHz and set the display amplitude for 6 major divisions 9 Change the generator frequency to 80 MHz 2 10 h CHECK that the display is at least 4 2 major divisions in amplitude i Repeat the above steps for CH 2 j Disconnect all cables and return the front panel controls to the preliminary settings NOTE To check bandwidth at an ambient temperature range of 0 to 50 the generator frequency is 70 MHz in parts c and g 2 Checkthe Ac Coupled Low Frequency Response The front panel control settings are the same as the preliminary settings with exception of the following TRIGGERING MODE LINE SECOND DIV 5m Connect a 10 Hz sine wave signal from the low frequency generator to the CH 1 input connector and adjust the signal amplitude for a vertical display of 6 major graticule divisions b Change the CH 1 DC GND AC INT DC switch to AC c CHECK that the signal amplitude is still 24 2 major divisions d Repeat the above procedure for CH 2 e Disconnect all cables and return the front panel controls to the preliminary settings 3 Check the Vertical Deflection Accuracy 15 C
154. omponents on which it is not desired to trigger It is also useful when signal tracing in amplifiers phase shift networks wave shaping circuits etc The signal from a single point in the circuit under test can be connected to the external trigger input connector through cable or signal probe The sweep is then triggered by the same signal at all times and this allows amplitude time relationship or waveshape changes of signals at various points in the circuit to be examined without resetting the trigger controls Rear interface INT DC triggering is used the same as EXT except the source is at the rear interface Trigger Coupling Three methods of coupling the trigger signal to the CPLG trigger circuits can be selected with the TRIGGERING CPLG switches Each method permits selection or rejection of certain frequency components of the trigger signal to obtain selective triggering AC Coupling The AC position blocks the dc compo nent of the trigger signal Signals with low frequency components below about 50 Hz are attenuated In general ac coupling can be used for most applications Operating instructions SC 504 AC Low Frequency Reject The AC LF REJ position passes all high frequency signals at approximately 10 kHz Dc is rejected and signals below approximately 10 kHz are attenuated When triggering from complex waveforms this position is useful for providing a stable display of the high frequency components High Frequency
155. ontrol is correctly set and an adequate trigger signal is present The READY TRIG D light indicates when the sweep generator is triggered When the trigger repetition rate is less than ap proximately 20 Hz or in the absence of an adequate trigger signal the sweep generator free runs to produce reference trace When an adequate trigger signal is again applied the free running condition ends and the sweep generator is triggered to produce a stable display with the correct LEVEL control setting The TRIGGERING LEVEL range is reduced to approximately the peak to peak range of the triggering signal Internal and external trigger sensitivity is reduced below approximately 100 Hz 17 Operating Instructions SC 504 Normal Triggering Operation in the normal position NORM button pushed in of the TRIGGERING MODE switch is the same as in the AUTO position when a trigger signal is applied However when a trigger signal is not present the sweep generator remains off and there is no display The READY TRIG D light indicates the sweep generator is triggered Use the normal mode to display signals with repetition rates below about 20 Hz This mode provides an indication of an adequate trigger signal as well as the corrections of trigger control settings since there is no display without proper trigger Also the READY TRIG D light is off when the sweep is not correctly triggered Single Sweep When the signal to be displayed is not repe
156. oon as they are developed and tested Sometimes due to printing and shipping requirements we can t get these changes immediately into printed manuals Hence your manual may contain new change information on following pages A single change may affect several sections 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 correct as printed SERVICE NOTE Because of the universal parts procurement problem some electrical parts in your instrument may be different from those described in the Replaceable Electrical Parts List The parts used will in no way alter or compromise the performance or reliability of this instrument They are installed when necessary to ensure prompt delivery to the customer Order replacement parts from the Replaceable Electrical Parts List CALIBRATION TEST EQUIPMENT REPLACEMENT Calibration Test Equipment Chart This chart compares TM 500 product performance to that of older Tektronix equipment Only those characteristics where significant specification differences occur are listed some cases the new instrument may not be a total functional replacement Additional support instrumentation may be needed or a change in calibration procedure may be necessary DM 501 replaces 7013 Comparison of Main Characteristics PG 501 replaces 107 108 PG 501 Ris
157. operly terminated time mark generator to the CH 2 inputconnec tor Trigger the display and position the baseline of the time mark below the bottom graticule line b ADJUST R1580 Geom located on the Main Board for minimum bow or tilt of the vertical lines using the vertical graticule lines for reference Compromise the adjustment of R1580 to bring all points within 0 1 major division or less Disconnect the time mark generator Adjustment Procedure SC 504 7 Adjust CH 1 and CH 2 Attenuator Bal Controls Set the DISPLAY switch to CH 2 b Set the CH 2 DC GND AC INT DC switch to GND and the VOLTS DIV switch to 20 m C Position the crt trace to the center horizontal graticule line using the CH 2 vertical POSITION control d Set the CH 2 VOLTS DIV switch to 5 m ADJUST R1570 Bal 2 located on the Main Board R1565 Bal 1 for Ch 1 to bring the crt trace back to the center horizontal graticule line f Return the CH 2 VOLTS DIV switch to 20 m and reposition the crt trace to the center horizontal graticule line using the vertical POSITION control Repeat these steps until all interaction is eliminated g Change the DISPLAY switch to CH 1 repeatthe above steps for CH 1 8 Adjust the Vertical Common Mode Voltage Set the DISPLAY switch to CH 2 b Connect thedc voltmeter leads to the center tapped connections of L2247 and L2347 located on the F and I circuit board ADJUST the CH 2 vertica
158. perature compensating diode CR2132 Final transient compensation is provided by R2242 C2341 and C2343 Transistors Q2131 and Q2135 provide the bias voltage levels for Q2235 Q2335 Q2242 and 02342 T coils 12247 and 12347 couple the output signals to the upper and lower deflection plates of the crt TRIGGERING AND SWEEP CIRCUITRY Trigger Pickoff This circuit through the setting of the TRIGGERING SOURCE switch inputs one of several triggering signals to the Trigger Generator circuit Triggering signals available are the EXT TRIG interface trigger CH 1 trigger CH 2 trigger and the line trigger Trigger Coupling The TRIGGERING CPLG switch selects either ac or dc coupling In the AC position coupling capacitor C3510 blocks the dc component of the trigger signal below 60 Hz This capacitor discharges through the TRIGGERING SOURCE switch and R3315 when switched out of the EXT position In the AC LF REJ position coupling capacitor C3511 blocks the dc componentof the trigger signal below 10 kHz In the HF REJ position R3521 and C3521 provide frequency rolloff for the high frequen components above 50 kHz 44 Input Source Follower Field effect transistor Q3520 operates as a source follower It provides a high impedance input for the triggering signals and also provides isolation between the trigger generator circuit and the trigger signal source Diode CR3521 protects Q3520 FET Q3524 is a high impedance relatively const
159. positive going waveform while the contact 25B signal is negative going Both signals are coincident with the gate waveform and can be used for sweep generator control Signals at contacts 26B and 25B are designed to drive a 100 side to side terminated line with an ECL receiver The ECL line driver operates between 5 V and ground and its outputs to contacts 26B and 25B are protected with 47 resistors Gate Select In Grounding contact 248 through 1 kNorless blocks the gate waveform from the trigger generator and allows an external gate via contacts 23B and 22B to control the sweep generator External Gate In and External Gate In The input signal to contacts 23B and 22B drives 100 Q terminated line with an ECL receiver The signalatcontact 22B must be a negative going waveform while the positive going signal is applied to contact 23B The ECL receiver is run between 5 V and ground Holdoff Out and Holdoff Out The signal at contact 20B is a positive going waveform while contact 21B is negative going Both signals are coincident with the holdoff signal from the sweep generator Contact 21B and 20B signals are designed to drive 100 0 side to side terminated line with an ECL receiver The ECL line driver operates between 5 V and ground and its outputs to contacts 21B and 20B are protected with 47 Q resistors Intensify In The signal to contact 19B is an ECL input and operates between a low lt 3 4 V which intensifies
160. preliminary settings with the following exception CH 1 VOLTS DIV 50m a Adjust the vertical and horizontal POSITION con trols so that the displayed signal follows the top horizontal 2 14 graticule line starting exactly at the left edge of the graticule b CHECK that the right side of the trace is no more than 0 1 major graticule division above or below the graticule line c Connect 0 5 ms time markers from a time mark generator through 500 coaxial cable with 500 termination to the CH 1 input connector d Adjustthe TRIGGERING LEVEL control fora stable display on the crt e Adjust the vertical POSITION control to place the baseline of the time markers well off scale beyond the bottom of the graticule f Adjustthe horizontal POSITION controltoalign one of the time markers with the bottom of the vertical center line of the graticule 9 CHECK that the top of the vertical trace is within 0 1 major graticule division left or right of the vertical center line h Disconnect the time mark generator and return the front panel controls to the preliminary settings 15 Check the Calibrator The front panel control settings are the same as the preliminary settings with the following exceptions CH 1 VOLTS DIV SECONDS DIV 2 Connect the output of the calibrator to the CH 1 input connector using the pin jack to bnc connector b CHECK that the display is 6 divisions within 06 division CHEC
161. proximately 0 5 ms division 1 2 In this position the input to channel 2 is inverted and algebraically added to channel 1 142 In this position the channel 2 signal is algebraically added to channel 1 XY In this position the channel 1 signal is displayed vertically and the channel 2 signal is displayed horizontally 25 TRIG VIEW Thisswitch when depressed displays the triggering signal on the crt 26 INTEN This control varies the display brightness 27 FOCUS This control provides adjustment to ob tain a well defined display Operating Instructions SC 504 GENERAL INFORMATION Graticule The graticule of the SC 504 is internally marked on the faceplate of the crt to provide accurate parallax free measurement The graticule is divided into eight vertical and ten horizontal divisions Each division is 0 25 inch by 0 25 inch In addition each major division is divided into five minor divisions The vertical gain and horizontal timing are calibrated to the graticule so accurate measurements can be made from the graticule Intensity Control The INTEN control is normally adjusted so the display is easily visible but not overly bright Readjustment may be required for different displays or sweep rates caution h Particular care should be exercised when a bright Spot is displayed high intensity spotmay burn the crt phosphor and cause permanent damage to the crt if allowed to remain
162. put balanced output operating between 5 V and ground Ramp output 0 to 10 V ramp Output resistance approximately 500 Q ENVIRONMENTAL CHARACTERISTICS Table 2 7 ENVIRONMENTAL CHARACTERISTICS Characteristics Description Temperature Operating 0 C to 45 C To 50 in mainframes equipped with fan Storage 40 to 75 C Altitude Operating 15 000 feet maximum operating temperature decreased by 1 C 1000 feet from 5 000 to 15 000 feet Storage To 50 000 feet Shock Operating and 30 g s 1 2 sine 11 ms duration 3 shocks in each direction along 3 major axes non operating for a total of 18 shocks Vibration Operating and With the instrument operating the vibration frequency is swept from 10 to 55 to 10 Hz non operating Vibrate 15 minutes in each of the three major axes at 0 015 total displacement Hold 10 minutes at any major resonance or if none at 55 Hz Total time 75 minutes PHYSICAL CHARACTERISTICS Table 2 8 PHYSICAL CHARACTERISTICS Characteristics Description Net weight Approximately 6 0 Ibs 2 7 kg Dimensions 5 3 13 5 W x 12 2 in 30 99 cm D x 5 12 7 cm H 2 8 Specification and Performance 5 504 PERFORMANCE CHECK Introduction This procedure checks the electrical characteristics of the SG 504 that appear the Specification section of this manual If the instrument fail
163. r for exactly 5 major divisions of deflection on the crt screen b Insert a 20 pF input normalizer between the generator and the input connector Change the square wave input to 10 V d CHECK that the deflection is 5 major divisions 1 division REV A MAR 1979 Specification and Performance 5 504 e Change the TRIGGERING SOURCE switch to the channel being checked f CHECK that the leading edge of the displayed waveform is not undershot or overshot by more than 0 5 major division g Repeat this procedure for CH 2 h Disconnect all cables and return the front panel controls to the preliminary settings 5 Check the Common Mode Rejection Ratio The front panel control settings are the same as the preliminary settings with the following exceptions CH 1 VOLTS DIV 2 2 VOLTS DIV 2 Connect 50 kHz 1 V signal from the leveled sine wave generator to the CH 1 and CH 2 inputs using a 50 Q coaxial cable a 50 Q termination and a 50 Q dual input connector b Change the DISPLAY switch to 1 2 and set the generator frequency to 1 MHz c CHECK that the crt displays less than 2 major division of deflection d Disconnect all cables and return the front panel controls to the preliminary settings 6 Check for Display Related Signal Isolation The front panel control settings are the same as the preliminary settings with the following exceptions DISPLAY CH2 CH 1 VOLTS DIV 2 CH 2
164. r from the calibration generator through a 2X attenuator to the CH 1 input connector d Set the TRIGGERING SLOPE to position e Adjust the calibration generator for a 100 us period and an output amplitude of 6 major graticule divisions f Set the SECONDS DIV switch to 54 and the VOLTS DIV switch to 1 g Rotate the TRIGGERING LEVEL control for a stable display h ADJUST C1430 located on the Main Board C1330 for CH 2 for a flat top on the displayed waveform 1 Change the DISPLAY switch to CH 2 along with the applicable CH 2 controls and repeat the above steps for 2 11 Adjust the Vertical Amplifier Gain Set the CH 2 VOLTS DIV switch to 10 mand set the TRIGGERING SOURCE switch to EXT b Set the CH 2 DC GND AC INT DC switch to DC Connect a 50 mV standard amplitude signal from the calibration generator to the CH 2 input connector d Vertically POSITION the waveform so that the top and bottom of the pulse waveform are within equal distance of the graticule center line ADJUST R2336 Gain 2 located on the F amp I Board for a waveform amplitude of exactly five major graticule divisions f Change the DISPLAY switch to CH 1 and reconnect the calibration generator output signal to the CH 1 input g Set the CH 1 VOLTS DIV switch to 10 m h Set the CH 1 DC GND AC INT DC switch to DC i ADJUST R1455 Gain 1 located on the Main Board for a waveform amplitude of exactly five major
165. racteristics Performance Requirements Supplemental Information Linearity lt 52 0 1 div change in timing over any 2 division interval within the center 8 divisions Page 2 7 Table 2 6 ADD the following to the Supplemental Information column for Input Signals Noise may exceed 2 mV peak to peak Bandwidth is greater than 50 MHz however it is recommended that signals be limited to 20 MHz or less 20 ns risetime or greater to prevent possible crosstalk with other signal lines Page 2 8 Table 2 6 CHANGE Output Signals in the Supplemental Information column to read as follows At least 50 mV div Bandwidth is typically 20 MHz Ouput resistance is less than 50 Q Page 2 9 CHANGE the first sentence of first paragraph to read This procedure checks the electrical characteristics of the SC 504 that CHANGE the first sentence of second paragraph to read The electrical characteristics in Section 2 are valid only if the SC 504 is calibrated CHANGE the Tektronix part no of the Dual Input Coupler to 067 0525 01 in the LIST OF TEST EQUIPMENT REQUIREMENTS Page 2 11 Step 5 Check the Common Mode Rejection Ratio CHANGE part c to read CHECK that the crt displays less than 0 1 major division of deflection CHANGE the last part of Step 5 from d to f ADD the following parts between part c and part f d Set the sine wave generator frequency to 10 MHz e CHECK the display for less than 0 5 major divis
166. reducing the reference voltage and the transformer drive If the secondary winding short remains for a time F3488 Diagram 10 opens to protect Q1380 If the R1285C and D voltage divider or the regulator circuit fails R1274 and R1371 allows CR1374 to conduct which removes the base drive from Q1378 High Voltage Outputs The secondary windings of T1475 provide the negative and positive accelerating potential for the crt the bias voltage for the control grid and heater voltage for the crt Theaccelerating potential is supplied by voltage tripler U1590 having an input voltage of approximately 3 3 kV peak The secondary winding of T1475 also supplies the negative accelerating voltage for the directly heated crt cathode Diode CR1610 half wave rectifies the transformer outputand supplies the 2 kV potential to the crt cathode Diodes CR1621 and CR1622 provide the crtcontrol grid voltage which is set by the Beam Current adjust R1595 The operating level at the control grid of V1000 is determined by diodes CR1488 and CR1390 Diode CR1390 limits the negative excursion of the bias voltage depending upon the Z axis amplifier output voltage The 47 Theory Operation SC 504 positive clipping level at the cathode of CR1488 is set the Beam Current adjust Diodes CR1621 and CR1622 act as dc restorers This results in a dc level across R1622 equal to the peak to peak excursion at the anode of CR1488 Crt Control Circuits Th
167. ronix Serial Model No Mtr PartNo Dscont Name amp Description Code Mfr Part Number R3122 315 0514 00 RES FXD CMPSN 510K OHM 5 0 25W 01121 5145 R3124 315 0103 00 RES FXD CMPSN 10K 5 01121 1035 83125 315 0622 00 5 6 2 5 01121 6225 83126 315 0621 00 RES FXD CMPSN 620 5 01121 CB6215 R3127 315 0103 00 RES FXD CMPSN 10K OHM 5 01121 CB1035 R3128 315 0514 00 RES PXD CMPSN 510K OHM 5 0 25W 01121 CB5145 83129 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W 01121 CB1035 R3130 315 0620 00 RES FXD CMPSN 62 OHM 5 0 25W 01121 6205 R3134 315 0470 00 RES FXD CMPSN 47 OHM 5 0 25W 01121 4705 R3135 315 0433 00 RES FXD CMPSN 43K OHM 5 0 25W 01121 4335 83136 315 0470 00 RES FXD CMPSN 47 OHM 5 0 25W 01121 4705 R3137 315 0470 00 RES PXD CMPSN 47 OHM 5 0 25W 01121 4705 83138 315 0470 00 RES PXD CMPSN 47 OHM 5 0 25W 01121 CB4705 R3142 321 0201 00 RES PXD FILM 1 21K OEM 1 0 125W 91637 MFF1816G12100F 83144 315 0433 00 RES PXD CMPSN 43K OHM 5 0 25W 01121 CB4335 83146 315 0681 00 RES PXD CMPSN 680 OHM 5 0 25W 01121 CB6815 R3150 315 0153 00 RES FXD CMPSN 15K OHM 5 0 25W 01121 1535 R3152 315 0202 00 RES PXD CMPSN 2K OHM 5 0 25W 01121 2025 R3154 315 0392 00 RES FXD CMPSN 3 9K OHM 5 0 25W 01121 CB3925 R3156 315 0181 00 RES FXD CMPSN 180 OHM 5 0 25W 01121 CB1815 R3160 315 0474 00 RES FXD CMPSN 470K OHM 5 0 25W 01121 4745 R316
168. s Cascaded Operation The channel 1 trigger out signal is electrically tied with the channel 2 input signal via an appropriate coaxial cable When switching the DC GND AC INT DC switch to INT DC position the rear interface contact 288 furnishes a portion of the channel 1 vertical signal The signal amplitude is at least 50 mV div of crt display referenced to 0 V when driving a 50 Q load The bandwidth in this mode is limited to approximately 30 MHz Section 2 5 504 SPECIFICATION AND PERFORMANCE CHECK SPECIFICATION Performance Conditions Items listed in the Performance Requirements column 4 of the Electrical Characteristics verified completing The electrical characteristics are valid only if the the Performance Check in this manual Items listed in the SC 504 has been calibrated at an ambient temperature Supplemental Information column are not verified in this between 20 C and 30 and is operating atan ambient manual they are either explanatory notes or performance between 0 to 50 unless otherwise characteristics for which no limits are specified noted ELECTRICAL CHARACTERISTICS Table 2 1 VERTICAL DEFLECTION SYSTEM Characteristics Performance Requirements Supplemental Information Bandwidth at 3 dB points 0 C to 35 0 C to 50 C DC to at least DC to at least 80 MHz 70 MHz 35 0 C to 50 C Risetime calculated
169. s Switching the respective channels In the ALT position a ve going signal is received from the sweep circuit to initiate the alternate switching of both channels one and two The display is switched between the channels at the end of each sweep 41 Theory Operation SC 504 gt Ch 1 signal Ch 2 signal IR P O HY 1430 Preamplifier NOTE DISPLAY switch shown to Pin 1 in CHOP position HY 1530 CH 1 Channel Switching Ditferential Multivibrator Amplifier Fig 4 1 Signal attenuation 42 e Theory Operation SC 504 Ch 1 and Ch 2 11 ATTENUATOR SWITCH 500 X 1 3 5 7 9 and 11 closed 100 X 2 5 7 9 and 11 closed 10 X 2 6 9 and 11 closed 1X 2 6 and 10 closed 17 16 19 18 21 20 GAIN SWITCH 4 X 17 18 21 and 22 closed 2 X 16 19 21 and 22 closed 1 X 16 19 20 and 23 closed VOLTS DIV SETTING Fig 4 2 Channel switching gates 43 Theory Operation SC 504 Trigger Interface Amplifier The interface amplifier acts as a buffer and also provides gain The channel 1 preamplifier output signal from pins 2 and 4 of J1450 is fed viaa 50 Q coaxial cable to pins 1 and 2 of J3170 of the trigger interface amplifier circuit This signal is inverted through the collector of Q3178 and outputs through emitter follower Q3188 at either J3188 and the rear interface connector pins 27B and 28B Trigger View When the TRIG VIEW pu
170. s fed to pin 9 of U4345 from the sweep generator The X1 gain control R1167 is connected from pin 6 to pin 3 of U4345 In the HORIZ MAG position the X10 gain control R1169 is connected in parallel with R1167 The magnifier registration on pins 1 and 8 of U4345 is provided by 1155 Horizontal positioning is controlled by the front panel Horiz POSITION control The output sweep signals from pins 7 and 2 of U4345 drive the two separate current driven feedback amplifiers composed of 04126 04125 and 04132 for the positive going sweep and Q4147 Q4145 and Q4137 for the negative going sweep Transistor Q4230 is the current source Theory Operation SC 504 AND POWER SUPPLY CIRCUITRY Crt Circuit The crt circuit produces the high voltage potentials and provides the control circuits necessary for operation of the cathode ray tube The Z axis and blanking amplifier circuits set the intensity of the display to control the crt blanking Z Axis Amplifier The Z axis amplifier is a current driven shunt feedback operational amplifier with a voltage output The amplifier consists of Q1280 01288 and 01289 The feedback path is from the collectors of Q1288 and Q1289 through C1285 and R1286 to a summing point at the base of Q1280 Collector coupled complementary amplifiers Q1288 and Q1289 provide a fast linear output signal and consume minimum quiescent power Q1289 acts as the pull up transitor and Q1288 acts as the pull
171. s in the normal manner Now rotate the trigger holdoff variable control counterclockwise until any remaining instability is eliminated Horizontal Sweep Rates The SECONDS DIV switch selects calibrated sweep rates for the sweep generator The variable control provides continuously variable sweep rates between the settings of the SECONDS DIV switch Only when the variable control is in its fully clockwise position are the sweep rates calibrated Sweep Magnification The sweep magnifier expands the sweep by a factor of ten The center division of the unmagnified display is the portion visible on the screen in magnified form The equivalent length of the magnified sweep is more than 100 divisions Any 10 division portion of the magnified sweep can be viewed by adjusting the horizontal POSITION control to bring the desired portion into the viewing area To use the magnified sweep first move the portion of the display which is to be expanded to the center of the graticule Then pull the SWP MAG switch to its out Position Use the horizontal POSITION control to move the magnified portion to the desired position When the PULL X10 HORIZ MAG switch is set to on the sweep rate is determined by reading the number shown against the blue background Operation some applications it is desireable to display signal versus another X Y rather than against the internal time base The X Y position of the DISPLAY switch provides
172. s to meet the requirements given in this performance check the adjustment procedure should be performed This procedure can also be used by an incoming inspection facility to determine acceptability of performance The electrical characteristics in Section 2 are valid only if the SG 504 is calibrated at an ambient temperature of 20 C to 30 and operated at an ambient temperature of 0 C to 50 Tolerances thatare specified in this performance check procedure apply to the instrument under test and do not include test equipment error Test Equipment Required Below is a list of equipment required to verify operation as specified Other equipment may be substituted when suitable LIST OF TEST EQUIPMENT REQUIREMENTS Description Performance Requirements Applications Example 500 power All steps TEKTRONIX TM 503 module 504 506 Function 5 Hz to 5 kHz Frequency response 503 generator Function Generator Time mark 2s 5 ns 1 2 5 sequence Sweep rates and TEKTRONIX TG 501 generator Geometry Time Mark Generator Calibration Amplitude calibration 50 mV Vertical deflection TEKTRONIX PG 506 generator to 5 V accuracy 0 25 into and vertical amp input Calibration Generator 1 output squarewave at approximately 1 kHz Leveled sine 250 kHz to 100 MHz Bandwidth rejection TEKTRONIX SG 503 wave generator Leveled Sine W
173. set to the calibrated position detent fully clockwise The VOLTS DIV variable controls provide continuous ly variable uncalibrated vertical deflection factors between the calibrated settings of the VOLTS DIV switches The VOLTS DIV variable controls extend the maximum vertical deflection factor to at least 25 V div Grounding Reliable signal measurements cannot be made unless both the oscilloscope and the unit under test are con nected together by a common reference ground lead in addition to the signal lead or probe The ground strap on the signal probe provides the best ground Also a ground lead can be connected to the post chassis ground to establish a common ground with the signal source 1 6 Input Coupling The DC GND AC INT DC switches allow a choice of coupling method for the applied signal The type of display desired and the applied signal determines the coupling method to use In the AC coupling position the dc component of the signal is blocked by a capacitor in the input circuit The low frequency 3 dB point in the AC position is about 10 Hz Therefore some low frequency attenuation can be expected near this frequency limit Attenuation in the form of waveform tilt will also appear in square waves that have low frequency components The AC coupling position provides the best display of signals with a dc component that is much larger than the ac component The DC coupling position can be used for most app
174. shbutton switch is depressed the triggering signal is displayed on the crt When the TRIG VIEW switch is in the off position pushbutton out Q1460 and Q1462 conduct causing current flow to pins 5 of HY1430 and HY1530 This provides for normal channel 1 and channel 2 preamplifier operation When the TRIG VIEW switch is depressed Q1456 and Q1458 are biased on through R1464 and R1466 Pins 1 of HY1430 and HY1530 are pulled low turning the channel 1 and channel 2 preamplifiers off Delay Line and Vertical Output Amplifier The delay line provides 125 ns of delay for the vertical signal allowing the sweep generator circuits time to initiate a sweep before the vertical signal reaches the crt deflection plates The Vertical Output Amplifier is a three stage amplifier The first stage consists of transistors Q2220 Q2320 Q2321 Q2322 and associated com ponents The circuitry between the emitters of Q2220 and Q2320 provides delay line thermal and partial transient compensation Thermistors RT2210 RT2120 and varicap CR2220 compensate the gain and transient response for ambient temperature changes The second stage consists of Q2230 Q2235 Q2330 Q2335 and associated components C2233 R2231 C2333 and R2332 provide thermal compensation The third stage consists of Q2242 Q2246 Q2346 Q2342 and associated components with R2336 providing vertical gain adjustment The common mode bias voltage is set by R2137 and tem
175. sic deflection factor is 5 mV div There is no attenuation in this setting and the preamplifier gain is maximum Other deflection factors are achieved by signal attenuation and gain switching circuits see Fig 4 1 The VOLTS DIV control operates the attenuator switch contacts and the vertical gain switch contacts from a single switch cam 81525 CH 1 S1325 CH 2 The attenuator circuits consist of one 5X and two 10X attenuators for each channel A 500X attenuation factor is obtained when switching the three attenuators in series FET Input Source Followers The signals from the attenuators are connected to the source followers Q1435 for channel one and Q1335 for channel two Resistors located on the hybrid substrates provide 1 MQ input impedance The output resistors of the input attenuators limit the current drive to the gates of Q1435A and Q1335A when high amplitude signals are applied to the input connectors Transistors Q1435B and Q1335B are constant current sources for Q1435A and Q1335A Gain Switching Circuits and Vertical Preamplifiers The gain switching circuits for each channel consist of two 2X attenuation networks located on the hybrid circuits HY1530 for CH 1 and HY1430 for CH 2 Again reduction of 4X is obtained when switching in both 2X networks The dc input balance controls R1565 and R1570 quiescently balance the preamplifier input circuits so that no current flows through the gain setting resistors The vertical
176. supply becomes inoperative Q2476 shuts down the 5 V supply An overvoltage on the V line can damage VR2420 and open F3478 Theory of Operation SC 504 Calibrator Circuit This circuitry produces a square wave output with accurate amplitude at a 1 kHz frequency The output is available at the front panel as a 6 V ground to peak square wave voltage This circuit is composed of Q1210 and Q1116 with associated components and is a free running emitter coupled multivibrator 49 Section 5 5 504 MAINTENANCE AND INFORMATION General system maintenance procedures provided in the power module instruction manual i e preventive maintenance troubleshooting aids parts removal and replacement procedures parts ordering information etc Numbers in parentheses in the following discussion refer to mechanical parts referenced in Fig 5 1 Crt Removal and Replacement The following procedure outlines the removal and replacement of the cathode ray tube Use care when handling the crt Protective clothing and safety glasses should be worn Avoid striking the crt on any object which might cause to crack or implode When storing a crt place it in a protective carton Set the crt face down ina protected location on a smooth surface with a soft mat underneath to protect the faceplate from scratches 1 Crt Removal a Remove the instrument side and top covers b Remove the implos
177. t board removal procedure then follow the crt replacement procedure Preamplifier Hybrid Substrates Removal and Replacement Instrument Covers and Bottom Frame Removal Using a blade type screwdriver pry up the rear corner of each side cover and carefully pull the covers away from the guides b Remove the two pan head screws that secure the bottom cover and pull the cover forward c Remove the two pan head screws that attach the high voltage cover pull up and remove the cover d Remove the ground stud located at the bottom right Corner of the front panel and the truss head screw at the bottom left corner of the front panel Remove the rear hex screws with a hex type nut driver and pull the bottom frame away 53 Maintenance and Interfacing Information SC 504 Hybrid Substrate Removal Remove the two truss head screws 19 securing the two rearmost spring clips 20 to the top of the cam switch NOTE Press down on the cam switch plastic top plate when removing the spring clips to prevent the plate from separating from the switch bearings b Push the substrate away from the housing so that it just clears the top cover of the cam switch but observe the following the substrate circuitry is very delicate and must be handled with care TI CAUTION rrr rrr nnn Donottouch the surface of the substrate handle by the edges only Protect the substrate from abrasion dust etc c Insert a blade type
178. te item relationships Following is an example of the indentation system used in the description column 12345 Name amp Description Assembly and or Component Attaching parts for Assembly and or Component Detail Part of Assembly and or Component Attaching parts for Detail Part Parts of Detail Part Attaching parts for Parts of Detail Part Attaching Parts always appear the same indentation as the item it mounts while the detail parts are indented to the right Indented items are part of and included with the next higher indentation The separation symbol indicates the end attaching parts Attaching parts must be purchased separately unless otherwise specified ITEM NAME In the Parts List an Item Name is separated from the description by colon Because of space limitations an Item Name may sometimes appear as incomplete For further Item Name identification the U S Federal Cataloging Handbook H6 1 can be utilized where possible ABBREVIATIONS ELCTRN ELECTRON NUMBER SIZE ELEC ELECTRICAL ACTUATOR ELCTLT ELECTROLYTIC ADPTR ADAPTER ELEM ELEMENT ALIGN ALIGNMENT EPL ELECTRICAL PARTS LIST AL ALUMINUM EOPT EQUIPMENT ASSEM ASSEMBLED EXT EXTERNAL ASSY ASSEMBLY FILLISTER HEAD ATTEN ATTENUATOR FLEX FLEXIBLE AWG AMERICAN WIRE GAGE FLH FLAT HEAD BOARD FLTR FILTER BRKT BRACKET FR FRAME or FRONT BRS BRASS FSTNR FASTENER BRZ BRONZE T
179. tep 17 Fast Ramp Fast Ramp Comp L Comp R C4131 4140 2296 26 Step 18 Trig Ext Bal P3521 Step 18 Trig Ext Bal P3520 T Step 18 Ext Bal 2296 27 R3527 SC 504 Fig 8 14 Horizontal Deflection Board and Trigger Switch Board Section 9 5 504 REPLACEABLE MECHANICAL PARTS PARTS ORDERING INFORMATION Replacement parts are available from or through your local Tektronix Inc Field Office or representative Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements developed our engineering department It is therefore important when ordering parts to include the following information in your order Part number instrument type or number serial number and modification number if applicable If a part you have ordered has been replaced with new or improved part your local Inc Field Office or representative will contact 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 00x Part removed after this serial number FIGURE AND INDEX NUMBERS Items in this section are referenced by figure and index numbers to th illustrations INDENTATION SYSTEM This mechanical parts list is indented to indica
180. th and having inside dimensions of no less than six inches more than the instrument dimensions Cushion the instrument by tightly packing three inches of dunnage or urethane foam between carton and instrument on all sides Seal carton with shipping tape or industrial stapler The carton test strength for your instrument is 200 pounds 57 Section 6 SC 504 OPTIONS None available at this time Section 7 SC 504 REPLACEABLE ELECTRICAL PARTS PARTS ORDERING INFORMATION Replacement parts are available from or through your local Tektronix Inc Field Office or representative Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements developed in our engineering department It is therefore important when ordering parts to include the following information in your order Part number instrument type or number serial number and modification number if applicable If a part you have ordered has been replaced with new or improved part your local Tektronix Inc Field Office or representative will contact you concerning any change in part number Change information if is located at the rear of this manual SPECIAL NOTES AND SYMBOLS X000 first added at this serial number removed after this serial number ITEM In the Parts List an Name is separated from the d
181. ticule lines e Change the SECONDS DIV switch and the markers out of the time mark generator to 0 2 us NOTE If 0 2 us time markers are unavailable connect 0 1 us markers and reference the display to two time marks per major graticule division f Check the display for one time mark per major graticule division 4 296 between the second and tenth major graticule lines g Check all sweep rates between 0 2 us and 2 us using appropriate time markers within 296 h Check display again for one time mark per major graticule division within 3 for 50 ns and 0 1 us i If necessary compromise the final adjustment of C1238 so that the time markers in the center eight graticule divisions for the above sweep rates are all within tolerance 17 Adjust Fast Ramp Comp left and Fast Ramp Comp right a Set DISPLAY switch to CH 1 b Connect 5 time markers from a properly ter minated time mark generator to the CH 1 input connector c Set the CH 1 VOLTS DIV switch to 1 V d Connect the trigger out signal from the time mark generator to the EXT TRIG input connector of the SC 504 e Set the TRIGGERING SOURCE switch to EXT f Set the SECONDS DIV switch to 50 n g Push in the X10 HORIZ MAG switch X1 Gain h Rotate the TRIGGERING LEVEL control to obtaina stable display i Use the horizontal POSITION control to center the time markers on the graticule j Pull the X10 HORIZ MAG switch and recenter the middle
182. time mark on the graticule with the horizontal POSITION control The second and tenth time markers must line up with their respective graticule lines NOTE Accuracy is measured over the center eight divisions excluding the first 50 ns and all after the first 100 divisions of the magnified sweep k ADJUST C4131 and C4140 located on the Horiz Defl board alternately so that the second and tenth time markers line up with their respective graticule lines Adjustment Procedure SC 504 While adjusting C4131 and C4140 by rotating the horizontal POSITION control keep the center time mark positioned on the center graticule line m Disconnect the Time Mark generator 18 Adjust Triggering External Balance a Set the voltmeter to measure 2 V full scale b Connect the positive lead of the voltmeter to TP3520 located on the Trigger Switch board and the negative lead of the voltmeter to TP3521 Set the CPLG switch to AC d Set the SOURCE switch to INT ADJUST 3527 Ext Bal located on the Trigger Sw board to obtain 10 mV reading on the dc voltmeter f Disconnect the dc voltmeter 19 Adjust Horizontal X Gain a Connect a 50 mV standard amplitude signal from the calibration generator to the CH 2 input connector b Set the DISPLAY switch to XY Set the CH 2 DC GND AC INT DC switch to DC d Set the CH 2 VOLTS DIV switch to 10 m e Position the two dot display equally from left to ri
183. tions are based on ANSI 1 1 1972 Other ANSI standards that are used in the preparation of diagrams by Tektronix Inc are Y14 15 1966 Drafting Practices Y14 2 1973 Line Conventions and Lettering Y10 5 1968 Letter Symbols for Quantities Used in Electrical Science and Electrical Engineering The following prefix letters are used as reference designators to identify components or assemblies on the diagrams A Assembly separable or repairable H Heat dissipating device neat sink 5 Switch or contactor circuit board etc heat radiator etc T Transformer Attenuator fixed or variable HR TC Thermocouple Motor HY Hybrid circuit TP point BT Battery J Connector stationary portion U Assembly inseparable or non repairable Capacitor fixed or variable K Relay integrated circuit etc Circuit breaker n Inductor fixed or variable v Electron tube Diode signal or rectifier M VR Voltage regulator zener diode etc DL Delay line P Connector movable portion Wirestrap or cable 05 Indicating device Q Transistor or silicon controlied Y Crystal Spark Gap Ferrite bead rectifier 2 Phase shitter Fuse Resistor fixed or variable FL Filter RT Thermistor Plug to E C Board The following special symbols may appear on the diagrams Identifies Panel Strap or Link Controls Connectors and Indicators Switch Closure Chart 5 Modified Component
184. titive or varies in amplitude shape or time a conven tional display may produce an unstable presentation To avoid this use the single sweep feature The single sweep mode can also be used to photograph a non repetitive signal To use the single sweep mode first make sure the trigger circuit will respond to the event to be displayed Depress the NORM button and obtain the best possible display in the normal manner for random signals set the trigger circuit to trigger on signal which is approximately the same amplitude and frequency as the random signal Then depress and release the SGL SWP button The next trigger pulse will initiate the sweep and a single trace will be presented on the screen After this sweep is complete the sweep generator is locked out until reset The READY indicator lights when the sweep generator circuit has been reset and is ready to produce a sweep and the light goes outafter the sweep is completed To prepare the circuit for another single sweep display press and release the SGL SWP button again Trigger Holdoff By placing the internal SWP VAR HO switch in the HO position the variable sweep control CAL is connected as a trigger holdoff variable control In this configuration the control provides for stable trigger ing on aperiodic or irregular signals such as complex digital words 18 To use the control first obtain the most stable presenta tion possible by adjusting the triggering control
185. to 35 The front panel control settings are the same as the preliminary settings with the following exceptions CH 1 VOLTS DIV 5m CH 2 VOLTS DIV 50 TRIGGERING SOURCE LINE Connect the calibration generator to the CH 1 input connector through a 50 Q coaxial cable REV A MAR 1979 b Adjust the generator variable control until exactly 4 major graticule divisions are displayed on the crt CHECK that the readout error is less than 2 0 CHECK readout error for the following settings Generator VOLTS DIV Setting Display Tolerance IN 5 20 4 20 _ 10 50 mV 5dv 20 20m 100 Sdiv 20 80m 200 mV 74 2 0 1 500 mV 5 div 20 2 1V 5 div 20 5 2V 4div 2 096 1 5V 5 div 20 2 10 5 div 2 0 5 20 V 4 div 20 _ 10 50 V 5 div 2 0 NOTE When checking the deflection accuracy at an am bient temperature range of 0 C to 50 C the readout error is less than 3 0 e Repeat the above procedure for CH 2 f Disconnect all cables and return the front panel controls to the preliminary settings 4 Check the Vertical Amplifier Input R and C The front panel control settings are the same as the preliminary settings with exception of the following TRIGGERING SOURCE LINE a Connect 5 V square wave from the calibration generator through a 50 Q coaxial cable to the CH 1 input connector and adjust the generato
186. to bend the protruding connector pins Place the crt shield 14 against the front crt support spacer Push the crt into the front crt support See Fig 5 2 Connect the crt socket to the crt Hold the crt assembly in position and install the rear panel with enough screws to hold the crt assembly in place c Insert two screws 8 to secure the high voltage cover and replace the remaining screws 9 to secure the rear panel d Connect the two crt vertical deflection pin leads to the F and circuit board e Reconnect the anode connector to the connector and snap the anode connector into the circuit board clip 6 f Reconnect the two pin connector from the trace rotation coil to the F and circuit board 5 1 Maintenance and Interfacing Information SC 504 Fig 5 1 Cathode ray tube circuit board and cam switch parts details portion of front subpanel 4 7 CRT shield 1878 2296 11 Fig 5 2 Cross sectional view showing placement position of front crt support crt shield and crt 9 Reinstall the Horizontal Deflection board Connect the square pins to the bottom of the board Reconnect the two horizontal crt deflection pin leads Replace the screw that holds the board h Position the rear panel bracket and insert the three Screws securing the bracket Tighten the black screw i Reconnect the FOCUS extension shaft to the focus potentiometer j Install the implosion shield spring
187. to two time marks per major graticule division d Rotate the TRIGGERING LEVEL control to obtain stable display e Vertically position the display to the center of the crt viewing area with the POSITION control f ADJUST R1167 X1 Gain located on the Main board until a display of the proper time marks per major graticule division is obtained The correct time markers must line up exactly with the second and tenth graticule lines 36 15 Adjust Horizontal Amplifier 10 Gain a Connect the 20 us time markers from the time mark generator to the CH 1 input connector NOTE If 20 us time markers are unavailable connect 10 us markers and reference the display to two time marks per major graticule division b Pull the X10 HORIZ MAG switch Rotate the TRIGGERING LEVEL control to obtain a stable display 4 Adjust R1169 X10 Gain located on the Main board until a display of one time mark per major graticule division is obtained The second and tenth time markers must line up exactly with their respective graticule lines 16 Adjust Sweep Timing Set the SECONDS DIV switch to 1 u b Push in the X10 HORIZ MAG switch Connect 1 time markers from the time mark generator to the CH 1 input connector d ADJUST C1238 located on the Main board until display of one time marker per major graticule division is obtained The second and tenth time markers must lineup exactly with their respective gra
188. too long Display Focus The FOCUS control works in conjunction with the astigmatism control to give a fine trace or well focused spot To check for proper setting of the Astig control slowly turn the FOCUS control through the optimum setting viewing the signal displayed on the crt screen If the Astig control is correctly set the verticaland horizontal portions of the trace will come into sharpest focus at the same position of the FOCUS control Calibrator The internal calibrator of the SC 504 provides a con venient signal source for checking vertical gain The output square wave voltage is 600 mV in 1 This signal is very useful as a probe calibrator signal as described in the probe instruction manual and operates at a repetition rate of approximately 1 kHz Vertical Displays Single Trace Displays Either of the inputchannelscan be used for single trace displays Apply the signal to the desired input connector and set the DISPLAY switch to display the channel used The TRIGGERING SOURCE switch can select either vertical channel asa trigger signal source Dual Trace Operation Alternate Mode The ALT position of the DISPLAY switch produces a display that alternates between Channel 1 and Channel 2 after each trace across the crt Although the ALT mode can be used at all sweep rates the CHOP mode provides a more satisfactory display at sweep rates slower than 50 us div At these slower sweep rates alternate mode switchi
189. tude 6 Set the triggering controls for a stable display Set the SECONDS DIV switch for a sweep rate that displays about one cycle of the waveform 7 Move the waveforms to the center of the graticule with the channel POSITION controls 8 Turn the variable SECONDS DIV control until one cycle of the reference signal CH 1 occupies eight divisions between the second and tenth vertical lines of the graticule see Fig 1 3 Each division of the graticule represents 45 of the cycle 360 8 div 45 div The sweep rate can now be stated as 45 div 9 Measure the horizontal difference between cor responding points on the waveform Channel 1 Channel 2 Reference Horizontal Difference 1738 2296 4 Fig 1 3 Phase difference measurements 10 Multiply the measured distance in divisions by 45 div sweep rate for the amount of phase difference 11 Example Assume a horizontal difference of 0 6 division with a sweep rate of 45 div as shown in Fig 1 3 Substituting the given values Phase difference 0 6 division X 45 div Phase difference 27 High Resolution Phase Measurement More accurate multitrace phase measurements can be made by increasing the sweep rate without changing the variable SECONDS DIV control setting The X10 sweep magnifier PULL X10 HORIZ MAG Switch increases the sweep rate Example If the sweep rate was increased 10 times with the magnifi
190. vertical amplifier blocking the dc component of the input signal INT DC In this position a signal connected through the rear interface connector and the power module is applied dc coupled to the input amplifier 20 CAL This control provides continuously variable deflection factors between the calibrated settings of the VOLTS DIV switch 21 VOLTS DIV This switch selects the vertical deflec tion factor in a 1 2 5 sequence variable contro must be rotated fully clockwise for the indicated deflection factor Normally the knob skirt window having the natural panel background will be read however when a 10X probe is used on the input read the knob skirt window having the grey background 14 22 CH 2 POSITION This control positions the display vertically In the XY mode of operation this control positions the display horizontally 23 CH 1 POSITION This control positions the display vertically When in the XY mode of operation this control also positions the display vertically 24 DISPLAY This switch selects the mode of opera tion for the vertical amplifier system CH 1 Displays CH 1 only CH 2 Displays CH 2 only ALT This position produces a display that alternates between channel 1 and channel 2 and is switched after each trace across the crt This position produces a display that is Switched between channels at a 250 kHz rate This position provides the best display atsweep rates slower than ap
191. with the spring ends down in the groove between the bottom front bezel portion of the front subpanel Install the implosion shield and filter into the front bezel portion of the front subpanel by compressing the spring and pushing into the groove k Reinstall the instrument side and top covers Replacing the crt requires partial instrument read justment Refer to Section 3 Adjustment Procedure of this manual Maintenance and Interfacing Information SC 504 Circuit Board Removal and Replacement The following procedure outlines removal and installa tion of the circuit boards 1 Circuit Board Removal a Remove the crt using the crt removal procedure b Remove all of the front panel knobs except SLOPE LEVEL horizontal POSITION vertical POSITION and INTEN c Remove the two screws 15 which hold the circuit board assembly to the top rails Remove the screw 16 and the stud post with knurled nut 17 and remove the bottom section frame 18 d Disconnect from the circuit boards those connec tors whose leads go to the front panel connectors or controls that still have knobs Unsolder the leads at the three bnc type connectors Remove the screw at the vertical bnc connector ground lugs Slide the circuit board assembly away from the front panel until it is clear of the subpanel f Disconnect the plugged together circuit board assembly as required 2 Circuit Board Installation Reverse the circui
192. xcellence PRODUCT SC 504 070 2296 00 DESCRIPTION TEXT CORRECTIONS Page 2 3 Manual and Page 2 of C1 478 insert CHANGE Pilot Changes 12 amp 15 TABLE 2 1 CHANGE the Supplemental Information column of Position effect to read Characteristics Supplemental Information Position effect Typically 5Z or less change in aberrations as a 5 division step is vertically posit ioned over the graticule area Page 2 4 TABLE 2 2 CHANGE the Supplemental Information column of Input R and C to read Characteristics Supplemental Information Input R and 1 107 paralleled by approximately 24 pF when selected 750KQ 10Z paralleled by approximately 28 pF when not selected Page 2 5 TABLE 2 3 CHANGE the Supplemental Information column of Trigger holdoff to read Characteristics Supplemental Information Trigger holdoff The SECONDS DIV CAL variable control selected by an internal switch increases trigger holdoff time by a factor of approximately 20 Page 2 10 ADD to the Preliminary Control Settings Step 1 control settings CHANGE to read CH 1 VOLTS DIV CH 2 VOLTS DIV TRIGGERING SOURCE SECONDS DIV 10 LINE lm Step 1 part a ADD to the CH1 bnc connector propuct SC 504 2 10 Step 1 part CHANGE to read CHANGE REFERENCE C3 1178 11 14 78 c Set the generator frequency to 10 MHz Page 2 11

Tektronix SC 504 User's Manual

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