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Tektronix, Inc.

P.O. Box

SOO

Beaverton, Oregon

97077

070-1352-01

TEKTRCNI»

RAMP

GENERATOR

RG 501

INSTRUCTION MANUAL

Serial Number

THIS MANUAL REPRINTED MAY

1978

Fllsl Pflnllng JUL

1972

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Summary of Contents for RG 501

Page 1: ...Tektronix Inc P O Box SOO Beaverton Oregon 97077 070 1352 01 TEKTRCNI RAMP GENERATOR RG 501 INSTRUCTION MANUAL Serial Number THIS MANUAL REPRINTED MAY 1978 Fllsl Pflnllng JUL 1972 ...

Page 2: ...he fastest possible service Please include the instrument Type Number or Pari Number and Serial Number with all requests tor parts or senl ice SpeCifications and price change privileges reserved Copyright 1972 new material 1976 by Tektronix Inc Beaverton Oregon Printed In the United States 01 America All righis reserved Contents of this publication may not be reproduced in any form without permiss...

Page 3: ... 501 TABLE OF CONTENTS Pege OPERATING INSTRUCTIONS 1 1 SPECIFICATION AND PERFORMANCE CHECK 2 1 ADJUSTMENT 3 1 MAINTENANCE 4 1 CIRCUIT DESCRIPTION 5 1 OPTIONS 6 1 ELECTRICAL PARTS LIST 7 1 DIAGRAM AND CIRCUIT BOARD ILLUSTRATION 6 1 MECHANICAL PARTS LIST AND EXPLODED VIEW 9 1 CHANGE INFORMATION ...

Page 4: ... EXT IN I QATEOUT 1 1 0 IiI UI RG 501 RIo flU__ I Gtll MIO Fig 1 1 RG 501 Ramp Gener lor Plug In Module RG 501 REV 8 MAR 1978 ...

Page 5: ...Removal Turn the Power Module off before insertingtheplug in otherwise damage may occur to the plug in circuitry Check to see that the plastic barriers on the inter connecting JaCk of the selected Power Module compart ment match the cut outs in the RG 501 circuit board edge connector Align the RG 501 chassis with the upper and lower guides ot the selected compartment Push Ihe module in and press f...

Page 6: ...rigger sitn OU CI RAMP DURATION Pushbuttons Selet t i lmllft of mp du tion Calibrlled whim DURATION MULTI plitr is It 1 TRIGGERING Pushbutton P u s h b utlonl ICI trillO ing mode lIop nd I sou ce AUTO TRIG mod producn recu renl ramps o f nllcud RAMP DURATIONS II ratn cMlermlnld by holdoff tim TIM AUTO TRIG mode preY ill 1 in thl absence of equII trtwering signll or 2 in m pr senu of an ulll rrlggl...

Page 7: ...a Y T display Set the FG 501 RG 501 lJ1f 1 I GATE VC I GATE RA V IN IN OUT OUT Fig 1 3 S plng and gaUng a Function Generator yn chronoully REV C MAY 1976 RG 501 to AUTO TRIG and use the RAMP OUT signal to drive the X axis A posilive going ramp will sweep most CRT displays from left to right Vary the RAMP AMPLITUDE for the desired sweep length The la volt range of the AG 50 shOuld give a full scree...

Page 8: ...MP AMPLITUDE control PG 501 RG 501 y 1 1 TRIG DURATION V GATE V IN OUT FIg 1 5 Triggering or g lIng Pulse Gener lor REPACKAGING FOR SHIPMENT If the Tektronix instrument is to be shipped to a Tektronix Service Center forservice or repair attach a tag showing owner with address andthe nameol an individual atyour lirm that can be contacted complete instrument serial number and a description of the se...

Page 9: ...ance 10 kO 10 20 kO diode protected Max Input Voltage SO V De peak AG Internal Same as External except thatthe trigger input is via the rear interface Line Triggers at the line frequency Other Temper ture Operating o eto 50 C Nonoperating 40 C to 75 C AHltude Operating To 15 000 feet Nonoperating To SO OOO feet PERFORMANCE CHECK Introduction This procedure checks the electrical characteristics of ...

Page 10: ...cial application requirements In such cases the procedure should be changed to accommodate the instrument alterations or the Instru ment should be restored to its original configuration TABLE 2 1 U of T t Equipment Requl mentl D crlpUon rtol mllnc Requlr ntl AppllClillon Eumple Oscilloscope Dual trace with Add mode Vertical Amplitude and Time 1 Tektronix T922 osclllo sensitivity 20 mV div through ...

Page 11: ...k RG 501 TIME MARK GENERATOR Marker Period 1 ms calibrated PERFORMANCE CHECK PROCEDURE 1 Check And Ramp Slart DC Level 0 loll within 20 mY a Connect a coaxial cable from the RG 501 RAMP OUTconnectortothe OscilloscopeCH 1 inputconnector b Adjust the RG 501 RAMP AMPLITUDE control for approximately eight divisions of display c Set the CH 1 input coupling 10 gnd and center the oscilloscope trace d Set...

Page 12: ...g can be lett unc henged t 5 ml dlv for the entlr Itep Otherwlle I t the Tlme DIv Iwitch to provide n pproprlete triggered dllpley 2 4 g Connect a bnc tee connector to the Marker Out connector Connect a coaxialcabletoeachside ofthebnc tee connector and a 50 0 termination at the end of each cable h Connect one ofthe terminated coaxial cables tothe AG SOl Ext In connector connectthe other coaxial ca...

Page 13: ...ker RAMP DURATION 10ps 1 ms 10 ms NOTE 100ps 1 m 10 ms Unstable triggering may occur at the slower sweep rales e g 1 s with the RG SOl and the REV 0 MAY 1976 Specification and Performance Check RG 501 test oscilloscope triggering mode set at auto trigger If this occurs set the triggering mode to normal trigger and adjust th9 triggering controls for a stable display i After completing this step rem...

Page 14: ...orizontal division h Set the Oscilloscope trigger controls to Slope and the CH 2 Volts DJv Variable contral to the calibrated position i Do not change connections or control settings 2 6 8 Check Gate Oul Duration Coincident with ramp a Connect a coaxial cable from the Time Mark Generator Marker Outconnector through a50 0termina tion to the RG 501 EXT IN connector b Set the RG 501 triggering to EXT...

Page 15: ...rom the RG 501 RAMP OUT connector to the CH 2 input connector i Adjust the RG 501 LEVEL control to position the markers at the center horizontal graticule line i e equidistant from top and bottom j CHECK That the index dot on the RG 501 lEVEL control is near O k Adjust the RG 501 LEVel controt and observe that the marker can be positioned at least one major division below and at least one major di...

Page 16: ...riggerSourceswitch to CH 2 and the Display Mode switch to Dual Trace Chopped 2 8 f CHECK That a stable ramp signal display one ramp per sine cycle can be obtained by adjusting the RG 501 LEVEL control g Oecrease the sine wavefrequency and sweep rate to display to or more cycles until the ramp signal becomes unstable or doubles in repetition rate h CHECK That Ihe sine wave frequency Is 20 Hz or les...

Page 17: ...Multimeter A Ilexible plug in extender Tektronix Part No 067 0645 01 is useful for troubleshooting or adjusting the RG 501 however the complete Adjustment Procedure can be perlormed without use of the extender Preparallon a Remove the left hand side cover 01 the RG 501 to gain access to the component side of the circuit board Pull the rear end 01 the side cover outwardfrom thesideo the instrument ...

Page 18: ...0 Offset reo C55 10 Timing R63 11 Ramp Col d CHECK For a meter reading of 15 volts iO 75 volt e Connect the dc voltmeter leads between the IS voit test point and ground I CHECK For a voltmeter reading of 15 volts O 75 volt g Disconnect the meter leads from the RG 501 2 AdJust And Ramp Start DC Level 0 volt within 20 mY a Connect a coaxial cable from the AG 501 RAMP OUT connector the the Oscillosco...

Page 19: ... Oscilloscope controls for a slable display j Adjust the Horizontal Positioning 01 the Oscilloscope to place the last time mark over the center graticule line Adjustment RG 501 k Select Swp Mag and reposition the leading edge of the last displayed time mark to the center graticule line I Disconnect the c08 ial cable and termination from the CH 2 input connector m CHECK That the falting edge 01 the...

Page 20: ...t g CHECK That the ramp falling edge occurs at the center graticule line within 0 3 division 3 4 h ADJUST C55 10 I IS Timing to position the ramp falling edge at the center graticule line i Using Table 3 1 repeat this check for the remaining RAMP DURATION sellings TABLE 3 1 Ramp Duration Checks Time DiY Marker RAMP DURATION 10 10liS loa 1 ms 1 ms 1 m 10 ms 10 ms 10 ms 1 1 1 NOTE Unstable triggerin...

Page 21: ... Maintenance Refer 10 the Power Module instruction manual for Section 4 RG 501 MAINTENANCE general corrective maintenance procedures and instruc lions Troubleshooting Use the Performance Check Adjustment Procedure and Circuit Description as aids to locate trouble in the event ofequipmentfailure Thetestequipment listed in the Performance Check and Adjustment Procedures will prove useful in troubles...

Page 22: ...baseline operation sweep start and stop and holdoff timing See Table 5 1 Miller Integrator U50 generates a linear positive going ramp controls its length and timing and resets the sweep logic in U30 See Table 5 2 TABLE 5 1 Sweep Logic U30 Pin Function I Reset Current logic I high state for at least 20 ns ends ramp regardless ofhow far the ramp has run up No current logic O low state allows U30 to ...

Page 23: ...riggM lnpul Trigger S lection Clrcuil Jf J J SLOPE 5 3 1AUTO 13 Sweep logic U30 1 RESET 1 X1 Ra1ft9 L MiUer ln l alOl U50 I OURATIO N I l l 8 r MULTIPLIER In R T imi Circuiur 1 RAMP OURATIO 11k C 1 L 090 O 092 0708 082 J DEI IPOLARITYII I rf7 I I RAMP J OUT 2BA Fig 5 1 FuncUona Block Ot gram N I ...

Page 24: ...t logic 1 Provides the dc reference level for Ihe internal comparator to set up end of ramp logic Provides Vee of 1 15 volls Produces a linearvoltage ramp out when current is gated inlo pin 1 Ramp ispositive goingwith an amplitude of approximately 0 to g volts Connects timing components which determine the ramp rate 13 rnA from R42 Output Amplifier SSO RAMP DURATION connects liming capacitors acro...

Page 25: ...s a reference voltage at the non inverting input 01 Uloo an operational amplifier connected in a voltage follower configuration Current 10 the load Issupplied via Rl02and an NPN series pass transistor mounted in the Power Module Changes in the load are led back 10 the inverting input of Uloo A shorl circuit in the load will cause a voltagedrop across Rl02 sufficienllo lurn on 0100which takes base ...

Page 26: ...Seclion 6 RG 501 OPTIONS No options are available at this time 6 1 ...

Page 27: ... concerning any ch nge in part number Change InlormatiOn 1f any il located a the felr 01 this manual SPECIAL NOTES AND SYMBOLS xooo Part lirsl added al this serial number OOX Part removed aller Ihis serial number ITEM NAME In the Parts List an Item Name Is separated Irom the description by a colon Because 01 space limitations an Item Name may somellme appear as incomplete For lurther lIem Name Ide...

Page 28: ...K lNOUSTR IES INC MALLORY CAPACITOR co OIV Of P R MALLOR t AND C O INC DIUJ ELECTRONICS INC Address P O BOX 128 1201 2ND STREET SOUTH P O BOX 867 19TH AVE sot mI 5005 E MCDOWELL RD PO BOX 20923 343 SNYDER AVENUE 12515 CHADRON AVE 2900 SeHlCONOUCTOR OR 1200 COLUMBIA AVE 35 HOFl MAN AVE 1142 W BEARDSLEY AVE 4433 RAVENSWOOD AVE 644 W 12TH ST P O BOX 500 2620 SUSAN ST PO BOX 11930 3029 E WASHINGTON ST...

Page 29: ...SILIOO lOV 150MA SEMlOONO OEVlCE SILlOON OV lSOHA SEMlCOND OEVICE SILIOON OV 15OHA StHICOND OEVICE SILIOON lOV 15OHA SEHICOIIO OEVICE SILICON OV 15OHA SEHICOND OEVICE SILlOON 3OV 150MA SEMIOONO OEVICE SILIODN 3OV 15OMA SEMIODND OEVICE SILICON lOV 15OHA SEMlCOND OEVlCE SILlOON lOV 150MA SEHICOND OEVlCE SILICON lOY 15 lHA 150 0101 00 8010100 8041819 INCAND l2V O 04A T l 150 0109 00 8041820 LAHP I O ...

Page 30: ...21 CBIOSS 31S 0621 00 RES FXD CMPSN 620 OHM 5 O 25W 01121 CB6215 15 0512 00 RES FXD CMPSN 5 1K OHM 5 0 2SW 01121 CBS12S 46 31S 0471 00 RES FXD CH SN 470 OHM 5 O 25w 01121 CB471S 7 315 0161 00 RES FXD CHPSN 160 O S O 25W 01121 CB1615 50 11 1370 00 RES VAR NONWIR ZK OHM 0 O 2SW 71450 201 YA5556 321 0262 00 RES FXD FU M S 2 K OHM l O 125w 91637 MF F1816GS2 00F 321 0282 00 RES FXD FILH 8 45K OHM l O 1...

Page 31: ... OHM S O 2SW 01121 CB3025 Rl02 307 0105 0 l RES FXD CMPSN 3 9 O HM 5 O 25W 01121 CB39G5 Rl20 315 0242 00 RES PXO CMPSN 2 411 OHlo4 5 0 25W 01121 CB242s Rl22 307 010S OO RES FXO CKPSN 3 9 OHH 5 0 2SW 01121 CS39G5 R124 321 0268 00 RES FXD FILH 6 0411 OHH a O 12Sw 91637 MFFIBl6G60400F Rl26 321 0285 00 RES FXD FILK 9 09K OHH I O 12SW 91637 HFF1816G90900F CAl S108 OC 260 1437 00 SWITCH PUSH 5 STA NON S...

Page 32: ... 8T eenery J Connector letlonelY portiOn C C ecllor filled or yerl I A ey C8 Circuit breeker l I nductor filled or yerl le CR OlOde or rectifier l I nduClor retlttor combinet on O l O ey line M Meter OS Indlcet1nt device nemp p Connector mov portion e Sperk Gep Q Tren or or tlilcon contfotied F F u ectlf r F l F llt r A A lttor filled or yerl l The following special symbols are used on the diagram...

Page 33: ...RG 501 A B c D E F CR4 N OT E C O M PON E N T S SHOWN W I T H DASH E D L I N E S A R E LOCAT E D ON B A C K S I D E O F B O A R D G H J K L M r REV C MAY 1 976 ...

Page 34: ...ITU DE 5V DURATION M U LT I P L I ER 1 POLAR ITY DURATION M U LTIPLIER 1 POLAR ITY RAMP DURATI O N 1 0 1s RAMP DURATION 1 0 1s TR IGGER I N G NORM SLOPE EXT T R I G G E R I N G AUTO SLOPE INT 2V T sf s I I T r r ili I i lT 1 1 gnd reference center horizontal graticule line J if il l I _ iY I L If J I Ir I r r r r r r r g ill r 5 IH 1 1 _ 2 r f 1 I iLt rr 1 r i 4 n irlo l I i t i j i J 1 j t t llli...

Page 35: ...I 1 1 1 I 1 1 6 1i T 0 0 _ f v V O _ 8 _ I _ ll BL I CONT t SIOD O T ISL 6p 1 1 0 1 I 30 En TRIG U 30 SWEEP CONT 5 1 N_ IE P C Sk tlli l 11 nk 0 R O 01 C6 1 k 40 1 0 r 1 __ J I Jt v Sv ok 14 15 R G S O l IRA P DUkA TIO I 15 1 R I 10k L 1 1 1 R 100M I I USO MILLER I NTEGRA TO R 10 RAl 10 44 ISV S I k 1 5 Z 09 REV AUG 197G 3 16 OFF SET 15 11 70 501 I v ...

Page 36: ...higher Indentation TI Ie separation symbol Indicates the andol allachlng parts AttKhlng puts mYlt be purchaMd t Iy unlNs 0 pecilled ITEM NAME In the Parts list an Item Name Is separated from the description by a colon Because 01 space limitations an Item Name may sometimes appear as incomplete For lurther Item Name identllicatlon the U S federal Cataloging Handbook H6 1 can be utilized where possi...

Page 37: ...CO HOLO ICPOME CO WROUGHT WASHER MFG CO TEXTRONIX INC CEN l ItAL SCREW CO CAMCAR SC1 EW MFG CO Address 343 SNYDER AVENUE 7100 LA IPSON AVE YOUK EXPRESSWAY 446 HORGAN ST l BROOK ST WEST 2100 S 0 BAY ST P O BOX 500 2530 CRESCEm DR 600 l8TH AVE City Slate Zip BERltELEY HEIGHTS NJ 07922 GARDEN GROVE CA 92642 NEW CUMBERLAND FA 17070 CAMPBELLSVILLE KY 42718 CINCINNATI OM 45206 HAR l f ORO CT 06110 MILWA...

Page 38: ... INCH LONG 1 cot NECl OR RCPT BNC FEMALE W HARDWARE 2 CONNECTOR RCPT BNC FEAALE W HARDWIUI E ATTACHING PARTS FOR EACH 1 TERMINAL LUC 0 391 10 INT TOOTH 3 RESISTOR VAR SEE R27 RS6 R85 tPL A l l ACHI PARTS TOR EACH 1 NUT PLAIt HEX 0 25 2 X 0 312 INCH BR5 1 WASHER FLATI0 25 10 X 0 375 INCH OO STL 1 1 1 1 1 1 1 PANEL FRONT EXTENSION SHArT 7 831 INCH LONG BASE lA IPHOLDER 0 29 00 X 0 19 CASE LENS LIGHT...

Page 39: ...25 00 Oly l 2 3 4 5 Name Description FT WIRE ELECTlUCAL 2 WIRE RnlBON 2 75 INCHES L FT WlRE f L CTRJ CAL WlRE RIBBON 6 lNCHES L 1 FR SECT PLUG IN BO 1 rOM 2 SUl POR l PLUG IN 2 WASHER FLAT 0 141 10 X 0 40 TKK AL 0 219 00 1 FR SECT PWG IN TOP Mlr Code Mfr Part Number 08261 OBO 08261 OBO 80009 426 0724 00 80009 386 3657 00 80009 210 1270 00 80009 426 0725 00 ...

Page 40: ...4S Al 3 RG501 RAMP GENERATOR ...

Page 41: ...dex No Tektronix Serial Model No Port No Eff Dscont 070 1352 01 Rev C MAY 1976 STANDARD ACCESSORIES QIy Nome Description 1 MANUAL INSTRUCTION Mh Code Mfr Port Number 80009 070 1352 01 RG501 RAMP GENERATOR ...

Page 42: ...ns Sincethe change Information sheets are earned in the manual until all changes are permanenlly entered some duplicallon may occur 11 no such change pages appear following this page your manual is correct as printed SERVICE NOTE Because althe universal partsprocurement prOblem someelectrica parts in your instrument may be different from Ihose described in the Replaceable Electrical Parts List The...

Page 43: ...High put 60 V Amplitude output tOO V 067 502 1 PO 506 Does not have chopped leature 0502 1 Comparator output can be aller nately chopped 10 8 reference voltage SG 503 replaces 190 190A I90B SO 503 Amplitude range 5 mV to 5 5 V POp 1908 Amplitude range 40 mV to 10 V p p 9 SO 503 FreQuency range 250 kHz to 250 MHz 191 Frequency range 350 kHz to 100 MHz 067 532 1 SG 503 Frequency range 250 kHz to 250...

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