Tektronix TU-7 Instruction Manual Download

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M ANUAL

S e ria l N u m b e r /

('■ p~

T ektronix, Inc.

S.W. M illikan W a y

•

P. O. Box 500

•

Beaverton, Oregon

•

Phone Ml 4-01 61

•

Cables: Tektronix

070-407

36^

Summary of Contents for TU-7

Page 1: ...MANUAL Serial N um ber p Tektronix Inc S W Millikan Way P O Box 500 Beaverton Oregon Phone Ml 4 01 61 Cables Tektronix 070 407 36...

Page 2: ...ctly to the fie ld there fore a ll requests fo r repairs and replace ment parts should be directed to the Tek tro n ix Field O ffice or Representative in your area This procedure w ill assure you the...

Page 3: ...structions Section 3 C ircuit Description Section 4 M aintenance Section 5 C a lib ra tio n Section 6 Parts List D iagram A list o f abbreviations and sym bols used in this m anual w ill be found on p...

Page 4: ...TU 7 PLUG IN TEST UNIT SERIAL VERTICAL POSITION AMPLITUDE VARIABLE LOAD POSITIONS ONLY test f u n c t io n HIGH LOAD PULSE REPETITION rate MED LOW LOAD PULSE EXT INPUT PORTLAND OREGON U S A TEKTRONIX...

Page 5: ...cope vertical amplifier ALTERNATE Checks operation of the alternate mode synchronizing circuits in the oscilloscope Also permits checking for proper sweep slaving in oscilloscopes having two time base...

Page 6: ...ing external signals to the oscilloscope vertical system through the Type TU 7 Useful for applying the calibrator signal when setting the gain of the oscillo scope vertical amplifier and for inserting...

Page 7: ...to center the display 4 Adjust the oscilloscope Vertical Gain control for exactly 4 cm vertical distance between the two traces Keep the display centered vertically on the crt while making this adjus...

Page 8: ...5 Sec Cm 3 Adjust the oscilloscope triggering controls for a stable chopped waveform display Fig 2 2 4 Set the oscilloscope Crt Cathode Selector switch to the Chopped Blanking position and check that...

Page 9: ...Set the oscilloscope Time Cm switch to 5 p Sec Cm 3 Adjust the oscilloscope triggering controls for a stable chopped waveform display Fig 2 2 4 Set the oscilloscope Crt Cathode Selector switch to the...

Page 10: ...eck of an oscilloscope pre amplifier system use a 1 series or letter series plug in unit rather than the Type TU 7 When using the Type TU 7 to couple an input signal to the oscilloscope vertical ampli...

Page 11: ...FUNCTION switch operate the dual trace switching circuit or the pulse generator circuit and will be discussed under those headings Detailed Description When TEST FUNCTION SW10 is set to the LOW LOAD p...

Page 12: ...ching multivibrator V95A V95B and steering diodes V102A V102B Under normal conditions the circuit performs five general functions 1 When the TEST FUNCTION switch is set to ALTERNATE the switching mult...

Page 13: ...Circuit Description Type TU 7 Fig 3 2 S im plified schematic o f Dual Trace Sw itching circuit show ing basic o p e ra tio n w ith TEST FUNCTION switch at ALTERNATE A 3 3...

Page 14: ...output level applied to C22 drops from 0 1 volt to about ground set by R88 R89 Any signal now applied to the EXT INPUT connector is attenu ated by the 1000 1 attenuator at the input and applied throug...

Page 15: ...Time Base B sweep When the TEST FUNCTION switch is set to the CHOPPED position the voltage in the grid circuit of the switching multivibrator sets the circuit for astable operation See Fig 3 5 The sw...

Page 16: ...Circuit Description Type TU 7 Fig 3 5 Dual Trace Sw itching circuit show ing o pe ra tio n w ith TEST FUNCTION switch at CHOPPED...

Page 17: ...uit When the TEST FUNCTION switch is set to the PULSE or PULSE position the rate generator operates as an astable circuit One complete multivibrator cycle turns the current switching transistors on an...

Page 18: ...Circuit Description Type TU 7 Fig 3 7 S im plified schematic o f the Pulse G e n e rator circuit w ith TEST FUNCTION switch a t PULSE and AMPLITUDE control fu lly clock wise 3 8...

Page 19: ...voltage on the crt display of the pulse With the AMPLITUDE control turned fully clockwise and the disconnect diodes conduct ing this output is approximately 67 2 volts at the junc tion of D75 and R76...

Page 20: ...rted when Q55 turns on again The switching rate of the rate generator multivibrator is determined by the supply voltages and the resistor capacitor combinations in the base and emitter circuits The fr...

Page 21: ...troubles not apparent during regular operation may be revealed and corrected during calibration CORRECTIVE MAINTENANCE General Information Removal or replacement procedures for most parts in the Type...

Page 22: ...htly over the stud area of the strip Switch Replacement Individual wafers normally are not replaced in switch assemblies Replacement switiches may be ordered from Tektronix either unwired or with the...

Page 23: ...k 1000 9 HIGH LOAD 2 4 k 1000 9 ALTERNATE CHOPPED 35 k 1000 10 LOW LOAD GAIN SET COMMON MODE ALTERNATE CHOPPED 12 1 k 1000 10 HIGH LOAD 1 5 k 1000 10 PULSE PULSE 4 4 k 12 k 1000 11 LOW LOAD GAIN SET C...

Page 24: ...Connect the test instruments to the power line 4 Turn on all test instruments except the indicator oscillo scope 5 Set the indicator oscilloscope front panel controls as fol lows Horizontal Display T...

Page 25: ...n adjustments and test points 4 Cheek VARIABLE Control o Reset the Type TU 7 controls to the positions given under Preliminary Instructions b Set the Time Base A triggering control to free run the swe...

Page 26: ...ns f Check that the upper trace is locked to Time Base B 10 Check Chopped Operation a Remove the Calibrator signal b Set the TEST FUNCTION switch to CHOPPED c Set the indicator oscilloscope Horizontal...

Page 27: ...ope power If the indicator oscilloscope has a plug in sensing switch in the plug in compartment pull forward on the switch plunger g Place the coupling capacitors item 9 under Equip ment Required on t...

Page 28: ...counter sunk P pico or 10 1 2 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...

Page 29: ...Parts List Type TU 7 EXPLODED VIEW 6 2 CABLt HARNESS AND STRIP DETflIL...

Page 30: ...u inch 210 840 1 LUG solder pot plain 5 333 791 1 PANEL front 6 366 220 1 KNOB AMPLITUDE charcoal Includes 213 020 1 SCREW set 6 32 x V8 inch HSS Mounting Hardware not included 210 590 1 NUT hex 3 8 3...

Page 31: ...inch BHS 18 Resistor Mounting Hardware 210 478 1 NUT hex aluminum 5 u x 7 1 32 inch 210 601 1 EYELET brass tapered barrel 211 553 1 SCREW 6 32 x 1y2 inch RHS 211 507 1 SCREW 6 32 x 5 1 6 inch BHS 19...

Page 32: ...LIP diode 30 136 0150 00 4 SOCKET 3 pin Mounting Hardware For Board not included 210 0586 00 6 NUT keps 4 40 x y 4 inch 211 0008 00 6 SCREW 4 40 x inch 31 179 0850 00 1 CABLE harness chassis 32 179 08...

Page 33: ...5 281 518 47 pf Cer 500 v C47 283 051 0 0033 pf Cer 100 v 5 C48 283 004 0 02 pf Cer 150 v C49 283 026 0 2 pf Cer 25 v C50 283 026 0 2 pf Cer 25 v C52 281 525 470 pf Cer 500 v C55 281 518 47 pf Cer 500...

Page 34: ...51 108 Replaceable by 2N2501 064 151 097 2N955 074 151 083 Selected from 2N964 Resistors Resistors are fixed composition 10 unless otherwise indicated R10 302 103 10k Y a w Rll 311 395 2 5 k Var VARIA...

Page 35: ...Var AMPLITUDE R74 323 633 801 O A w Prec 1 R76 321 068 49 9 0 Vs w Prec 1 R78 321 289 10k y8 w Prec 1 R79 302 225 2 2 meg A w R80A 316 104 100 k A w R80B 316 104 100k A w R80C 316 104 100 k A w R80D...

Page 36: ...25 k 10 w w w 5 R116 308 018 2 5 k 10 w w w 5 R121 324 603 27 8 k 1 w Prec 1 R122 308 025 20 k 10 w W W 5 R122 308 027 30 k 10 w W W 5 R123 312 642 5000 20 w w w 1 R124 301 623 62 k y2w 5 R125 303 433...

Page 37: ...ns CONTROLS SETTINGS VARIABLE centered VERTICAL POSITION centered AMPLITUDE centered REPETITION RATE MED Input Signal none Pulse Gen ckt A ll other ckts TEST FUNCTION PULSE CHOPPED Test O scilloscope...

Page 38: ......

Page 39: ...CIRCUIT DIAGRAM rl Q T 0 Z i TLST UNIT...

Page 40: ...t and component improvements to our instruments as soon as they are developed and tested Sometimes due to printing and shipping require ments we can t get these changes immediately into printed manual...

Page 41: ...R21 521 0615 00 5 05 k 1 8 w Prec 1 2 R32 CHANGE 502 0222 00 TO 2 2 k 1 2 W 10 CVf 285 0627 00 0055 M E PTM 100 V CkS 285 0685 OO 0 2 2 pF REM 100 V CA9 285 0625 00 A7 pF REM 100 V R 5 5 0 1 0155 00...

Page 42: ...TYPE 1M1 TENT S N 1 10 Page 2 of 2 SCHEMATIC CORRECTION PA R TIA L C IR C U IT D IA G R A M M 9 7 3 1 1 2 6 5...

Page 43: ...Parts List Correction Change to R109 308 0093 00 12 K 8 W W W 5 M 9 7 3 3 H 6 5...

Page 44: ...H W L 44 c0 74 t 6 0 6 7 d f w 4 rco 5 7 7 j 2 5 1 r v i 1y 6 w 4 V t r W r r 4 r i L V l t f f...

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