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Parts

List—Type

114

Diodes

Tektronix

Part

No.

S/N

Range

Description

Ckt.

No.

D1

01

*152-075

Germanium

Tek

Spec

D114

*152-185

Signal

Replaceable

by 1N3605

D115

152-0071-00

Germanium

ED-2007

D

118

*152-185

Signal

Replaceable

by

1N3605

D1

31

*152-075

Germanium

Tek

Spec

D1

36

*152-185

Signal

Replaceable

by

1N3605

D141

*152-075

Germanium

Tek

Spec

D

1

56

*152-185

Signal

Replaceable

by

1N3605

D

1

61

*152-185

Signal

Replaceable

by

1N3605

D177

*152-075

Germanium

Tek

Spec

D1

93

*152-075

Germanium

Tek

Spec

D196

*152-185

Signal

Replaceable

by 1N3605

D206

*152-075

Germanium

Tek

Spec

D208

*152-185

Signal

Replaceable

by

1N3605

D209

152-076

Zener

1N4372

3v,.4w,

10%

D232

*152-185

Signal

Replaceable

by

1N3605

D236

*152-185

Signal

Replaceable

by 1N3605

D237

*152-185

Signal

Replaceable

by

1N3605

D238

*152-185

Signal

Replaceable

by

1N3605

D244

152-141

Silicon

1

N3605

D282

152-066

Silicon

1N3194

D283

152-066

Silicon

1N3194

D284

152-055

Zener

1N962A

11v,.4w, 5%

Replaceable

by 1N3605

D293

*152-185

Signal

D298

152-066

Silicon

1N3194

D299

152-066

Silicon

1N3194

Transistors

Fuse

F281

159-029

0.3

Amp

3AG

Slo-Blo

Connectors

J101

131-352

BNC

Coax,

female

J239

131-352

BNC

Coax,

female

J279

131-352

BNC

Coax,

female

P281

131-150

3

wire

motor

base,

male, chassis

mounted

Q

1

15

*151-108

Replaceable

by

2N2501

Q125

*151-133

Selected

from 2N3251

Q134

*151-108

Replaceable

by

2N2501

Q145

*151-108

Replaceable

by

2N2501

Q1

55

*151-108

Replaceable

by

2N2501

Q

1

64

*151-108

Replaceable

by

2N2501

Q174

*151-108

Replaceable

by

2N2501

Q184

151-107

2N967

Q194

*151-108

Replaceable

by

2N2501

Q205

*151-108

Replaceable

by

2N2501

5-12

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Содержание 114

Страница 1: ...INSTRUCTION MANUAL Serial Number_____________ 114 PULSE GENERATOR Tektronix Inc S W Millikan Way P O Box 500 Beaverton Oregon 97005 Phone 644 0161 Cables Tektronix 070 465 265 ...

Страница 2: ...y to the field there fore all requests for repairs and replace ment parts should be directed to the Tek tronix Field Office or Representative in your area This procedure will assure you the fastest possible service Please include the instrument Type and Serial number with all requests for parts or service Specifications and price change priv ileges reserved Copyright c 1965 by Tektronix Inc Beaver...

Страница 3: ...Type 114 Type 114 Pulse Generotor ...

Страница 4: ... Instructions Section 3 Circuit Description Section 4 Maintenance and Calibration Section 5 Parts List and Diagrams A list of abbreviations and symbols used in this manual will be found on page 5 1 Change in formation if any is located at the rear of the manual Type 114 ...

Страница 5: ...ted value Jitter is typically less than 0 05 of pulse period 2 ms Pulse Width The WIDTH switch and associated VARI ABLE control provide continuously variable pulse widths from l00 nsec to 10 msec With the width VARIABLE control at the CAL end of its range the width accuracy is within 3 of indicated value Jitter is typically less than 0 05 plus nsec An additional SQUARE WAVE position on the WIDTH s...

Страница 6: ...from regularity Kilopulses per second Monostable multivibrator A circuit having one stable and one semi stable state A trigger pulse drives the circuit into the semistable state where it remains for a predetermined time before returning to the stable condition Sampling system Trigger Megapulses per second When changing from one voltage level to another a momentary excursion greater than the change...

Страница 7: ...ontrols AMPLITUDE Switch Selects the two basic voltage ranges and the polarity of the output signal VARIABLE Provides for varying the output amplitude Control within the range selected by the AMPLI TUDE switch OUTPUT Connector BNC connector from which the output is taken TRIGGER Switch This switch permits the operator to select the edge of the output pulse at which the trigger pulse occurs Connect...

Страница 8: ...Operating Instructions Type 114 Fig 2 1 Front panel control Fig 2 2 Type 114 rear ponel 2 2 ...

Страница 9: ...narrow trigger pulse approximately 3 volts in amplitude should be visible approximately 1 cm from the start of the oscilloscope trace 6 Turn the WIDTH VARIABLE control and note that the displayed trigger pulse can be delayed from 10 µsec to more than 100 µsec from the start of the trace By using the 5 basic ranges of the WIDTH switch and by turning the as sociated VARIABLE control it is possible t...

Страница 10: ...NOTES ...

Страница 11: ...der to make the transistors conduct and deliver the proper pulse to the Width Generator When a pulse having the proper amplitude and risetime is applied to the EXTERNAL TRIGGER INPUT connector Q115 is biased into conduction and in turn biases Q125 and Q134 into conduction The resulting pulse at the pri mary of T131 has a risetime of about 10 nanoseconds Width Generator The Width Generator receives...

Страница 12: ...iod Generator is steered to Q205 switching the bistable and the steering circuit Thus the output of the bistable is a symmetrical square wave Trigger Output Circuit Trigger output transistor Q234 normally operates in satura tion due to the current through R232 Whenever the sig nal selected by the TRIGGER switch goes negative the volt age change is coupled through C231 to the base of Q234 and momen...

Страница 13: ... switch provides continuously variable voltage amplitude within the ranges of the AMPLITUDE switch Power Supply The power supply consists of a regulated 25 volt supply and an unregulated 35 volt supply The 25 volt supply and a 10 volt supply are stacked to obtain the 35 volt supply A rear panel switch is provided to change transformer pri mary connections when switching from 115 to 230 volt operat...

Страница 14: ...NOTES ...

Страница 15: ...ration so that substandard transistors will be detected at this time Check suspect transistors by substitution Be sure the substituted transistor is the same type as the one re placed and that the substitute itself is good If the original transistor is found to be good return it to the same socket from which removed Recalibration Instrument accuracy is ensured if the cali bration of the Type 114 i...

Страница 16: ...Maintenance and Calibration Type 114 Fig 4 1 Equipment necessary for recalibrating the Type 114 4 2 ...

Страница 17: ...mponent by cutting the leads near the body This frees the leads for individual unsoldering 2 Grip the lead with needle nose pliers Apply the tinned tip of a 40 watt pencil soldering iron to the lead between the pliers and the board then pull gently 3 When the solder first begins to melt the lead will come out leaving a clean hole If the hole is not clean use the soldering iron and a toothpick or a...

Страница 18: ...ru 4 infinity 25 volt supply Outer shell of C298 1 5 K 35 volt supply C298 terminal 2K Checks and Adjustments NOTE Control settings and test conditions for each step are the same as for the preceding step unless otherwise noted 1 Adjust 25 volt supply 9 a Set all controls as shown in Fig 4 2 b Install the 50 Ω termination Tektronix Part No 011 049 on the Type 1A1 Channel 1 input Connect a 50 Ω coa...

Страница 19: ... b Using the variable line voltage source vary the line voltage from 94 5 to 137 5 volts c Check that the VOM reading does not change more than 0 5 v while the line voltage is varied over the range specified d Return the variable line voltage source to 115 volts 5 Check 25 volt supply for ripple a Remove the VOM leads Remove the 50 Ω termination from the Type 1A1 input but leave it connected to th...

Страница 20: ...ype 547 HORIZONTAL DISPLAY switch to B Set the TIME CM B switch to 1 mSEC Set the TRIGGER ING SOURCE switch to INT NORM the SLOPE switch to and the MODE switch to TRIG Adjust the TRIGGERING LEVEL control for a stable display of the 100 microsecond markers from the Type 180A f Change the Type 1A1 MODE switch to ALT and the Channel 1 VOLTS CM switch to 5 Using the Type 1A1 POSITION controls position...

Страница 21: ...0A see Fig 4 9 e Adjust capacitor C115F see Fig 4 10 so that the peaks of the pulses from the Type 114 occur at the same point on each succeeding pulse from the Type 180A as shown in Fig 4 9 Allowable error is 3 but it is possible to adjust much closer than this 8 Check period accuracy 10 mS to 1 µS a Set the Type 114 PERIOD control to 10 mS and the WIDTH control to 10 µS Fig 4 10 Location of 1 mi...

Страница 22: ...et the Type 180A for 100 microsecond markers C Turn the Type 1A1 MODE switch to ALT d Set the Type 547 TIME CM B to 2 mSEC and adjust the TRIGGERING LEVEL control for a stable display e Use the Type 1A1 POSITION controls to obtain the dis play shown in Fig 4 12 f Adjust the WIDTH CAL control R180 see Fig 4 13 for a positive pulse width of 1 millisecond ten 100 microsecond periods using the time ma...

Страница 23: ...pe 547 TRIGGERING LEVEL control for stable triggering d Set the Type 180A to deliver 10 mc sine wave output e Use the Type 1A1 Channel 2 POSITION control to posi tion the top of the sine waves from the Type 180A to the graticule centerline Fig 4 13 location of WIDTH CAL control R180 f Set the SWEEP MAGNIFIER control to X5 Use the HORI ZONTAL POSITION and TRIGGERING LEVEL controls to obtain the dis...

Страница 24: ...control to 100 5 set the PE RIOD control to 10 mS and the PERIOD VARIABLE control to CAL b Set the Type 180A for 100 microsecond markers c Set the Type 1A1 Channel 1 VOLTS CM switch to 5 d Set the Type 547 TIME CM B to 2 mSEC the TRIG GERING SLOPE switch to and adjust the TRIGGERING LEVEL control for a stable display e Slowly rotate the WIDTH VARIABLE control clock wise Check for a pulse width of ...

Страница 25: ...orth between LEADING EDGE and TRAILING EDGE The display on the crt should flicker slightly and show minor differences between the leading edge and trailing edge trigger pulses g Turn the Type 114 PERIOD control to EXTERNAL TRIG GER and note that the display remains the same Return the PERIOD control to 1 µS 17 Check pulse risetime falltime and aber rations a Set the Type 547 TIME CM B switch to 2 ...

Страница 26: ...Fig 4 19 k Using the HORIZONTAL POSITION and VERNIER con trols position the trailing edge of the pulse to the center of the graticule and measure the falltime I Set the AMPLITUDE switch to 3 to 10 V and repeat h i i and k NOTE The risetime or falltime of the Type 114 as read on the crt of the Type 547 will be less than 13 nanoseconds The 50 megacycle bandpass of the Type 547 1A1 adds about 25 to t...

Страница 27: ...Width accuracy all settings of WIDTH control 1 µS___________ 10 µS __________ 100 µS___________ 1 mS___________ 10mS___________ 100 nS___________ 1 µS___________ 10 µS __________ 100 µS___________ 1 mS___________ 9 WIDTH VARIABLE control range_____________ 1 10 Square wave period accuracy________________ 11 Output amplitude into a 50 Ω load all settings of AMPLITUDE switch 3 to 10 V___________ 1 t...

Страница 28: ...Maintenance and Calibration Type 114 Fig 4 20 Locations of electrical components 4 14 ...

Страница 29: ...CSK counter sunk P pico or 10 12 dia diameter PHS pan head steel div division piv peak inverse voltage EMC electrolytic metal cased piste plastic EMT electroyltic metal tubular PMC paper metal cased ext external poly polystyrene f farad Prec precision F 1 focus and intensity PT paper tubular FHS flat head steel PTM paper or plastic tubular molded Fil HS fillister head steel RHS round head steel g ...

Страница 30: ...Parts List Type 114 EXPLODED VIEW 5 2 ...

Страница 31: ...OWER w mounting hardware 12 136 0164 00 2 SOCKET lamp w mounting hardware 13 386 0122 00 100 939 1 PLATE sub panel 386 0122 01 940 1 PLATE sub panel 14 262 0696 00 1 SWITCH wired PERIOD switch includes 260 0671 00 1 SWITCH unwired PERIOD 15 384 0299 00 1 ROD switch 16 376 0014 00 1 COUPLING pot 17 1 RESISTOR variable mounting hardware not included w resistor 210 0012 00 1 LOCKWASHER internal x 2 i...

Страница 32: ...ardware not included w chassis 211 0542 00 3 SCREW 6 32 x 16 inch THS phillips 211 0538 00 3 SCREW 6 32x5 u inch FHS phillips 31 1 TRANSFORMER transformer includes 211 0530 00 4 SCREW 6 32xl3 4 inches PHS 210 0823 00 4 WASHER fiber y8 ID x 4 inch OD mounting hardware not included w transformer 32 210 0457 00 4 NUT keps 6 32x5 16 inch 33 200 0293 00 2 COVER capacitor polyethylene 34 351 0089 00 100...

Страница 33: ...unting hardware not included w transistor PLATE mica LUG solder SE 6 WASHER shouldered black anodized WASHER fiber 6 WASHER 6S x 5 16 inch LOCKWASHER internal 6 NUT hex 6 32 x V4 inch SCREW 6 32 x 5 116 inch BHS PIN locating w 8 32 threads PIN locating w 8 32 threads ASSEMBLY fuse holder assembly includes CAP fuse HOLDER fuse WASHER rubber NUT CONNECTOR motor base connector includes POST ground CO...

Страница 34: ... 210 0406 00 1 NUT hex 4 40 x 3 16 inch 46 670 0203 00 1 ASSEMBLY wired circuit board assembly includes 388 0621 00 100 1109 1 BOARD circuit 388 0621 01 1110 1 BOARD circuit 47 214 0653 00 X500 2 SINK heat 48 386 1101 00 X500 1 PLATE heat sink mounting hardware not included w plate 210 0457 00 2 NUT keps 6 32 x s 16 inch 49 136 0183 00 18 SOCKET transistor mounting hardware not included w board 50...

Страница 35: ...embly cabinet includes 1 426 0254 00 1 FRAME front bottom mounting hardware not included w frame 212 0004 00 2 SCREW 8 32 x 5 16 inch BHS 212 0002 00 2 SCREW 8 32x1 inch 100 CSK FHS phillips 2 426 0253 00 1 FRAME front left 3 386 0148 00 2 PLATE side mounting hardware for each not included w plate 212 0002 00 2 SCREW 8 32x74 inch 100 CSK FHS phillips 5 7 ...

Страница 36: ...included w foot 211 0532 00 2 SCREW 6 32 x inch Fil HS 348 0073 00 1 FOOT bail limiting right rear left front pair mounting hardware for left rear not included w foot 211 0532 00 2 SCREW 6 32 x3 4 inch Fil HS 210 0457 00 1 NUT keps 6 32x5 16 inch 348 0074 00 1 FOOT bail limiting left rear right front pair mounting hardware for right rear not included w foot 211 0532 00 2 SCREW 6 32 x inch Fil HS 8...

Страница 37: ... i 4 inch BHS 210 0007 00 1 LOCKWASHER external 8 19 386 0149 00 1 PLATE top cover 20 386 0139 00 1 PLATE rear 21 386 0147 00 100 939 1 PLATE bottom cover 386 0147 01 940 1 PLATE bottom cover 22 348 0075 00 2 FOOT rear guard left and right mounting hardware for each not included w foot 212 0004 00 2 SCREW 8 32 x 5 16 inch BHS 23 358 0260 00 100 939 1 BUSHING plug in securing 358 0294 01 940 1 BUSH...

Страница 38: ...EF NO PART NO SERIAL MODEL NO a T Y DESCRIPTION EFF DISC 1 161 0024 00 100 1319 1 CORD power 3 conductor 8 feet 161 0024 01 1320 1 CORD power 3 conductor 8 feet 2 103 0013 00 1 ADAPTER power cord 070 0465 00 2 MANUAL instruction not shown 5 10 ...

Страница 39: ...23 100 pf Cer 350 v C141 283 076 27 pf Cer 500 v 10 C142 281 523 100 pf Cer 350 v C155 290 175 10 µf EMT 35 v C171 281 523 100 pf Cer 350 v C180 283 002 0 01µf Cer 500 v C195A 1 0 µf C195B C195C 295 086 0 1 µf 0 009975 µf Timing Capacitor WIDTH C195D 935 pf C195E 281 622 47 pf Cer 500 v 1 C195F 281 093 5 5 18 pf Cer Var C205 281 523 100 pf Cer 350 v C205 283 0032 00 470 pf Cer 5 C206 281 510 22 pf...

Страница 40: ...6 152 185 Signal Replaceable by 1N3605 D237 152 185 Signal Replaceable by 1N3605 D238 152 185 Signal Replaceable by 1N3605 D244 152 141 Silicon 1N3605 D282 152 066 Silicon 1N3194 D283 152 066 Silicon 1N3194 D284 152 055 Zener 1N962A 11v 4w 5 Replaceable by 1N3605 D293 152 185 Signal D298 152 066 Silicon 1N3194 D299 152 066 Silicon 1N3194 Transistors Fuse F281 159 029 0 3 Amp 3AG Slo Blo Connectors...

Страница 41: ...250k Var VARIABLE PERIOD R116 321 317 19 6 k w Prec 1 R118 316 222 2 2 k w R119 316 271 270 Ω w R120 303 511 510 Ω 1 w 5 R121 316 222 2 2 k w R123 315 161 160 Ω w 5 R124 304 471 470 Ω 1 w R125 311 442 250 Ω w Var PERIOD CAL R131 316 181 180 Ω w R132 316 471 470 Ω w R136 Use 316 0223 00 22 k w R142 316 472 4 7 k w R144 316 472 4 7 k w R154 302 471 470 Ω w R156 316 103 10k w R161 316 103 10k w R163 ...

Страница 42: ...268 305 510 51 Ω 2 w 5 R269 305 510 51 Ω 2 w 5 R270A B 311 513 2x150 Ω Var VARIABLE AMPLITUDE R271 305 101 100 Ω 2 w 5 R272 305 101 100 Ω 2 w 5 R273 303 301 300 Ω 1 w 5 R274 303 360 36 Ω 1 w 5 R276 305 360 36 Ω 2 w 5 R278 303 270 27 Ω 1 w 5 R283 308 240 2 Ω 3 w WW 5 R284 316 392 3 9 k w R285 316 562 5 6 k w R290 311 442 250 Ω Var 25 VOLTS R291 301 112 1 1 k w 5 R292 315 751 750 Ω w 5 R293 316 103 ...

Страница 43: ...Parts List Type 114 Transformers Ckt No Tektronix Part No Description S N Range T131 120 370 Toroid 3 windings T281 120 369 Power 5 15 ...

Страница 44: ...e CAL 100 µS 10 µS 3 to 10V LEADING EDGE Voltage readings shown in blue on the schematics were obtained with a 20 000 Ω volt meter and in some cases show meter loading All voltages measured with respect to the outside shell of C283 unless otherwise indicated Voltage readings may vary somewhat between instruments due to normal manufacturing tolerances and component characteristics Waveforms shown o...

Страница 45: ...TYPE 114 PULSE GENERATOR ...

Страница 46: ...PULSE GENERATOR ...

Страница 47: ...TYPE IM PULSE GENERATOR c ...

Страница 48: ...SW282 POWER SUPPLY CMD OUTPUT AMPLIFIER 4 POWER SUPPLY ...

Страница 49: ...lse Width CHANGE 2nd sentence to read With the width VARIABLE control at the CAL end of its range the width accuracy is within 10 ns on negative pulse of indicated value at 10 ns through 1 µs positions At the 100 ns position accuracy is within 10 ns on negative pulse C2 767 ...

Страница 50: ...TYPE lilt PARTS LIST CORRECTION CHANGE TO C115A C115B C115C C115D 295 0108 00 1 0 µF 0 1 µF 0 009925 µF 960 pF Timing Capacitor PERIOD Checked assembly SCHEMATIC CORRECTION PULSE GENERATOR M10r952 667 ...

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