Tektronix PG502 Instruction Manual Download Page 6 | Manualshive

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Summary of Contents for PG502

Page 1: ...Poktronix Inc P 0 BOX 500 Beaverton Oregon 97005 973 070 1598 00 Serial Number ...

Page 2: ...Generator External Trigger Duration Buffer Manual Trigger Multivibrator Period and Trigger Out Buffers Trigger Shaper Duration Generator Output Buffer Output Driver Output Amplifier output Level Programmer Power Supply SECTION 3 SERVICE INFORMATION Symbols and Reference Designators Rear Interface Connector Assignments Electrical Parts List Internal Adjustment Procedure Timing Board Parts Location ...

Page 3: ...PG 502 ...

Page 4: ...ggered The front panel is color coded for easy reference to controls and their associated functions Orange denotes pulse duration controls and settings green triggering functions and yellow is used for an operating caution note Alpha numerics done in red are the frequency equivalents for the pulse period settings Installation and Removal The PG 502 is calibrated and ready for use when received It ...

Page 5: ...ge across it greater than the maximum allowed connect a blocking capacitor in series with the OUTPUT connector and the load Us the back termination to Impedance Matching provide a PC return path for the output current Make A mismatch or different impedance in a transmission el certain the time constant of the capacitor and the load is large enough TO maintain pulse flatness The output line generat...

Page 6: ... of A and R When constructing such a device the environment surrounding the components should also be designed to provide smooth transition between the impedances Accept able performance can be obtained with discrete eompo rents using short lead lengths however a full coaxial environment is preferred The characteristic impedance of a coaxial device is determined by the ratio between the outside di...

Page 7: ...bined risetimes of the testing sysw deter mine the actual risetime of the device under test by using the following formula R equals the overall rise or falltime of the entire measurement system and R R R etc are the risetimes or falltimes of the individual componentc comprising the system rrl I I Variable Pulse Delay Variable pulse delays may be obtained using another PG 502 or other suitable puls...

Page 8: ... in the NORM mode using the VARIABLE controls Excessive duty factor is indicated by any of the following pulse abnormalities 1 pulse output period in multiples of the trigger output period and 2 alternate pulses with durations less than the pulse duration setting Wuty factors approaching 100 may be obtained by switching to the complement mode Set the PULSE DURATION control for a pulse width equal ...

Page 9: ...tion input capabilities at the rear interface connector remove the coaxial cable from the front panel connetior and the coaxial corm or on the I Timing Board Use a new piece of coax about ten inches long with suitable connection Solder the free end of this cable to the rear interface pads located as shown in the I illustration Remember when planning to use the rear interFace I connectors pulse fid...

Page 10: ... pulse top excluding overshoot ringing or pulse rounding Sometimes referred to a5 tilt or slope 8 High Level The most positive value of a pulse regard less of unwanted aberrations or overshoot measured at a point that is located at 50 of the pulse duration Low Level The most negative value of a pulse regard less bf unwanted aberrations or overshoot measured at a point fhat is at 50 of the off time...

Page 11: ...IFICATIONS I I PERIOD Range 44 ns 10 r to 10 ms in decade steps Vari able control ellows overlay on all ranges and extends period TO 100 15 External Duration Leading edge threshold level 1 V trailing edge reset Ilevel Xl 1 V Maximum inout 5 V q DC peak AC rate to 2 V P P 250 MHz L I Jitter GO 196 50 ps Accuracy 5 in calibrated positions from 10 s to 1 ills 15 0 10 ms range OUTPUT Jitter a l 50 ps ...

Page 12: ...reached pin 2 goes low and pin 3 goes high The negative Step at pin 2 is coupled through the timing capacitor and appears at pin 4 The capacitor now charges through the PERIOD VARIABLE resistance until the switching level is reached and the period cycle repeats A slight offset current is applied through thesymmetry Adj control to compensate for the input current in Ll15OB This current controls the...

Page 13: ...currenr source Q290 As fhe emitter of Q270 goes negative it pulls pin 12 of U260A negative through 0288 When pin 12 reaches the switching threshold approximately 4 V pin 14 goes p rive and the mono Manual Triger Multivibrator stable duration generator resets until the next positive going trigger pulse repeats the process Output is taken from U260A pin 15 Output Buffer This OR NOR gate U2606 shapes...

Page 14: ...negative This causes pin 10 to go positive increasing current flow through Q650 and restoring the voltage To is prew value Should the current supplied increase excessively the voltage drop across R650 causes Q650 to decrease conduction through infernal action in U640 limiting the current to a safe value Q606 and Q610 serve as a comparator for the I5 V supply If the 15 V supply goes negative due to...

Page 15: ...0 Logic svmbologv is based on MIL STD SOW in terms of positive logic Logic symbols depict the logic function performed and may differ from the manufacturer s data The following special symbols are used on the diagrams External Screwdriver adjustment External control or connector 03 Clockwise control rotation in direction of arrow Refer to diagram number indicated in diamond Refer to waveform numbe...

Page 16: ...xternalTriggerIn Ground ExternalTriggerI 2s VAC winding 33 5 v filtered DC Ball lead of PNP SerierPass Emitter lead of PNP SeriesPass 33 5 v cOmmO return 33 5 v filtered DC Emitter lead of NPN SeriesPass Base lead of NPN SariarPau 17 5 VA0 winding 11 5Vcommon return 11 5Vcammo ret rn s v filtsred DC 25 VAC winding ...

Page 17: ...tact 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 ITEM NAME In the Parts List an Item Name is separated from the description by a colon Secause of space limitations an Item Name may sometimes appear as incomplete For further Ite...

Page 18: ...MFR CODE MANUFACTURER ADDRESS ClTY STATE ZIP Stanhyck winding Di San Fernando Electric Mfg co Inc Tektronix 1 C ...

Page 19: ...AP FXDICER DL 39PP 500 fAP FXD PLSTC SUF 1a oo CA P F m CER D1 0 1UF 20 50V CAP FXD ELCTLT 47UF lo 35V cAP FXD MTCA D 4440PF L 3000 CAP FXD MICA o 150PF 1 300 CAP FXD CER D O I F O SPV CAP FXD ELCTLr loo F 25V CRP FXO ELCTLT loo F115V CAI FXO ELCTLT 100UF 25V CAP FXD CER or 0 1 F 20 50 CAP EXO CER D1 1000PF 100 0 200 CAP FXD CER DI 1000PF t100 0 20ov CAP FXD CeR DT 0 1UF 20 50V CAP FXD CER DI 0 1 ...

Page 20: ...007 00 131 1003 00 131 1003 00 131 1003 00 131 100 3 00 131 1315 00 276 0543 00 1ow3317 00 lbs oaa7 oo 276 0569 00 276 0569 00 Description caP FXD CER DT lOOOPr 100 0 20o caP FXDICER DI O LUF ZO 50 C Q FXD CER DI O lUF 20 50 cm FXD CER D 0 1 F 20 50 cAP FXD CER DI O 1 F 0 50 cAP FXD CER DIi0 00lUF 100 0 5oov CAP FXD ELCTLT looUF 25 CAP FXD CER D 0 01L F 20 50 cAP FXD CER DY O lUF 20 50 caP FXD CER...

Page 21: ...RES FXD COMP L 8 owM i o 25w RES FXD COMP 4 7K OAM 5 0 25W ...

Page 22: ...100 00 315 0220 00 315 0101 00 RES FXD COMP 270 OHM 5 0 25W RES FXD COHP 180 OHM 5 0 25W RES FXD COMP K o M 5 0 25W RES FXD COMP B OnM 5 0 125w RES AR NONWIR SK OHMX K 0 10 0 125W P ES FXD COMP 430 OHM 5 0 50W RES FXD COMP 100 OtiM 5 0 25W RES FXD COMP 430 onM 5 0 50w RES TXO COMF 22 OHM 5 0 125W RES FXD COMP B2 OHM 5 0 25W RES FXO COMP 10 OHM 5 0 25W RES FXD COMP 51 OHM 5 0 25W RES FXD COMP 10 OH...

Page 23: ...R OHM 5 0 25W RES FXD COMP 75 Oml 5 0 25W RRR FX C MP 75 anM 5 O 25W RES FXD COMP lOK OHM 5 0 25W RES FXD COMP lOK OHM 5 0 25 4 RES FXD COMP OHM 5 0 25W RES FXD COMP Fx OHM 5 0 25 4 RES FXD FTLM 39 2 OHMM 1 0 125W RES AR NONwIR lOOK 0HM 20 0 5 RES FXD COMP 5 1K OHM 5 0 25W Electrical Parts List PG 502 Nome Description RRS FXD COMP K OHM 5 0 25 Mfr Pert Number ...

Page 24: ...LM lK OHM l O l25W 75042 CEATO lOOlP RES FXD CO P m 0w4 5 0 25w 01121 CBlO25 RES FXD FILt l ZK OMM 1 0 125W ES FXo CO P 3 6K OHM 5 0 25 RES PXD COMPi3 3K OHM 5 0 25W RES FXD CmP 56 OHM 5 0 25lv 91637 z 75042 75042 RES FXD COMP lK Oml 5 0 25W OllZl cm025 RES FXD COMP lO OHM 5 0 25W OllZl CBlOO5 RES FXD COMP lOK OxM 5 0 25W Oll2l C81035 RES FXD FIW 5 9K OHM l O l25W 75042 CEATO 59olF RES FXD Fn M 14...

Page 25: ...SEMICOND DNICE ZENER 0 4W IS s SEMICOND DE TCE ZENER10 4W 7 5V 5 SEMnmND DFVICE ZENER 0 4W 1Z sa SEMICOND OE ICE ZENER O W 6 2V 58 ...

Page 26: ...ble plug in extender Tektronix Part No 067 0645 01 Remove the power module cabinet to maks adjustments to the PG 502 inside the power module PG 502 djustm nts we located on the outside of both boards Make adjustments at an ambient temperature between 2O C 30 C To check or rew the OUTPUT IVOLTS contra1 knobs use the following procedure Connect an oscilloscope to the PG 502 OUTPUT conn ctor Set the ...

Page 27: ... CO E trigger inpu male to GR GR tc SW Connect the to the S6 tion Conne cable Set tl the vertica 500 mV div SO WAVE I position Pt COMPLEME ABLE cant mately 40r approximatf major divisit P P for mil and best syn 6 Adjust Using the HIGH LEVE Adjust R40 aberrations for least abf negative dire ...

Page 28: ...GH LEVEL control for five major divisionsof amplitude Adjust R402 Set Drive 5V P P Normal for minimum aberrations on the negative transition Repeat steps 6 and 6 for least aberrations and least change in overshoot in the negative direction in the 1 to 5 major division region 8 Adjust Law Level Balance Using the same setup as in the previous step set the vertical deflection factor to 10 mV div over...

Page 29: ... RI606 Dl 0260 E3 RI63 Dl L167 F4 Rl20 G4 RI66 64 L196 03 R122 64 RI66 84 83 84 4 4 4 F3 F4 04 P3 k 4 0126 cl130 1166 moo 1210 a220 G230 G240 B 64 63 G4 02 F2 F2 F2 FE F2 RI26 H4 RX 7 64 RI30 03 R132 G3 RI36 H4 R136 G4 R140 06 R142 Hl RI44 Hl R146 H3 R147 Ii3 R160 RI62 R164 RI66 R167 R170 R162 R163 II166 RIB7 R188 HI R189 I1 MOO 12 ii 92 H R196 I RlB6 02 R168 12 R196 I2 R210 52 R212 I2 RZ14 1 R217...

Page 30: ...185 Q190 II210 1220 ai230 0240 B1 RI25 H4 me0 12 E l RI 7 G4 R SZ 12 RI30 63 R164 I2 G3 i 032 G3 RI66 12 64 RI35 4 a 57 HI 62 RI36 04 RI70 12 F2 RI40 G5 RI92 02 FZ RI42 1 R183 G2 F2 R144 HI RI85 F2 F2 R146 H3 RI 7 G3 F2 R147 3 R188 F4 RI92 I3195 RI96 RI98 RI99 R210 R212 R214 R217 Fl R262 Fl l 4254 F R266 FZ R268 F2 R389 E3 F3 R292 54 i F3 R294 E4 F3 R295 E4 F3 R297 c3 F3 I3298 C2 F3 03 S15OA HZ E3...

Page 31: ... t c I PG 502 ...

Page 32: ...h 1 r I 5 I _ ___ ______ AI 0 TP T BOARD I 0 I ...

Page 33: ...onnects interna termination when in MAN TRIG P hb tton Provide manual trigger in EXT TRIG mode when pushed Activates out wt ar long as deprerred when in EXT DURATION mods COMPLEMENT Push button When in interchanges high and low evels when out o mal operation O TP T IV0L E HlGH LEVEL Control ndjunr voltage 0 mon ...

Page 34: ...363 D2 C363 D2 C626 C626 12 CR660 CR660 I6 L460 0118 D3 0118 D3 C628 C628 13 CR660 CR660 53 I 451 C420 D3 C420 D3 c lo c lo J 4 CR676 CR676 F2 p1 c645 C646 53 F600 F600 K2 P2 C422 64 C422 64 ORI Lot Ii4 Fl J2 02 I2 12 13 J 4 53 C424 C436 Cm2 C460 C603 C604 C511 C612 C616 D3 63 D2 El 04 P6 14 16 H4 C660 14 F645 K5 C662 13 F670 K4 C674 54 C676 F2 Jl65 Kl 5320 H3 CR100 64 5340 H3 CR130 H3 5436 D6 CR3...

Page 35: ...06 52 R550 KS R WO c2 R447 F4 RE 02 H4 R608 J1 R662 53 R402 83 R449 FS R504 04 R6 O 52 R564 52 FM06 D3 R450 F4 R506 F5 R512 JZ RR35 J3 R408 D3 R456 E3 R508 H4 R615 JZ R668 K3 R4 O 03 R458 E4 R5 O H4 R616 K4 R670 53 R412 D4 R460 E3 R512 15 R62O I R672 53 R416 D4 R462 E3 R514 H5 R522 I R674 53 R417 04 R464 E3 R510 H5 R623 I1 R676 K3 XT GRlI 0 LOC 360 F3 U4OO E3 LI48O Fl Ll6 30 54 b R320 03 VU335 03 ...

Page 36: ...I I I II I P4 502 ...

Page 37: ... t k 1 ca oQ 1 sv ...

Page 38: ...PC 502 ...

Page 39: ... OUTPUT ...

Page 40: ...i L 81 ACol pVT zD I _ Y Pcq 502 ...

Page 41: ... 5 VOLTS ...

Page 42: ...EX NUMBERS Items in this section are referenced by figure and index numbers to the illustrations INDENTATION SYSTEM This mechanical parts list is indented to indicate item relationships Following is an example of the indentation system used in the description column 12345 Name Description Assembly and or Component Attacbingperfs for A semblv and or Component Detail Part of Assembly end or Componen...

Page 43: ...Mechanical Parts List PG 502 ABBREVIATIONS CRO SS INDEX MFR CODE MFR CO DE MAIVIJFACTURER NUMBER TO MANUFACTURER ADDRESS CltY StATE ZIP ...

Page 44: ...Mechanical Parts Liti PG 502 ScriollModsl No oscont Mfr WY 1 1 3 4 5 Name Description Code Mfr Part Number ...

Page 45: ...tion Code Mfr Pdrt NW 131 0566 00 381 0923 00 263 1009 00 210 0406 00 214 1139 W 211 1139 03 211 1127 00 105 0510 00 101 0115 00 376 0052 00 213 0146 00 211404040 210 0406 00 312 0202 00 1 ACTR ASSY CRM S TIm CM QnTACHTNG PARTS 4 SCA ASSEM WSHA 4 40 x 0 312INCH PNH ms 1 231 1003 00 260 1425 00 361 0382 00 131 1031 m ...

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Page 50: ...REPACKAGING Mfr Port Number ...

Page 51: ...mediately into printed monuuls Hence your Manuel moy contain new change infdrmation on following pages A single change moy affect several sections Sections of the manual are often printed ot different times so some of the information on the change pclges may olreody be in your munu l Since the change informetion sheets are carried in the manual until ALL changes clre permanently entered some dupli...

Page 52: ... 18 ohm nominal value selected RES FXD CCMP 75 ohm 5 0 25 W RES FXD COMP 270 ohm 5 0 25 W RES VAR NONWIR SK ohm RES FXD COMP 49 9 ohm l 0 125 W RES FW CCMP 49 9 ohm 1 0 125 W RES FW COMP IOK ohm 5 0 25 W RES FXD COMP 1K ohm 5 0 25 W R298 is replaced by a jumper 131 0566 00 ADD C245 281 0611 00 CAP FXD CER 2 7 pF nominal value selected C245 is added between the base and collector of 9245 Cl72 283 0...

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