Tektronix 7B51 Instruction Manual Download

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Summary of Contents for 7B51

Page 1: ...L L L C L L L L INSTRUCTION MANUAL Tektronix Inc TYPE 7851 DEI AYING TIME BASE S W Millikan Way P O Box 500 BeaYerton Oregon 97005 Phone 644 0161 Cables Tektronix 070 0976 00 869...

Page 2: ...done as follows 1 Typed text pages are typically scanned in black and white at 300 dpi 2 Photo pages are typically scanned in gray scale mode at 600 dpi 3 Schematic diagram pages are typically scanne...

Page 3: ...to th fj ld th refore all requests for repoirs ond re placement parts hould be directed to the Tektronix Field Office or representative in your area This procedure will assure you the fastest possibl...

Page 4: ...neral Installation Front Panel Controls and Connectors Test Setup Chart General Operating Information Sweep Calibration Check Simplified Operating Instructions Normal Sweep Magnified Sweep Delayed Swe...

Page 5: ...ep Stop Comparator Holdoff Capacitor and Amplifier Sweep Holdoff Multivibrator Reset Control Amplifier Sweep Reset Multivibrator Single Sweep Operation Alternate Operation Delayed Sweep Operation Dela...

Page 6: ...y Stop R500 Delay Time Accuracy Delay Time Jitter Line Trigger Source ELECTRICAL PARTS LIST Abbreviations and Symbols Parts Ordering Information Index of Electrical Parts List cont DIAGRAMS AND MECHAN...

Page 7: ...e T UOOlIUNO M LfVU SUWf m iJ K _ 1 ____1 i DlUol llMl Ill 00 n 78 OElAVING TIMI Type 7851 ill...

Page 8: ...ply at an ambient temperature of O C to 50 C unless otherwise noted Warmup time for given accuracy is 20 minutes TABLE 1 1 ELECTRICAL CHARACTERISTICS Characteristic Performance Characteristic Performa...

Page 9: ...arads within 2 picofarads 10n Internal Triggering Only the specification for 3 dB frequency of the Vertical System replaces any frequency in the above table when the number in the table is greater tha...

Page 10: ...tment push it in until it fits firmly into the indicator plug in compartment To remove pull the release latch see Fig 2 1 to disengage the unit from the indicator and pull it out of the plug in compar...

Page 11: ...LE V ELISLOPE control when the trigger signal repetition rate is above about 200 hertz and with in the frequency range selected by the COUPLING TRIGGER CONTROLS SWEEP CONTROLS TRIGGER CONTROL switch...

Page 12: ...the amplitude range the trigger repetition rate is outsidtl the frequency range selected by the COUPLING switch the trig ger signal is inadequate or when the RESET READY light is off there is no trace...

Page 13: ...shown in magnified form Screwdriver adjustment to set amplitude of the output sawtooth Delay Controls B DELAY MODE A INTEN DURING B Series of push button switches to select the delay logic to the com...

Page 14: ...lT f 0 0 0 AUTO AC LFREJ UIE 0 D D IORM AC FlU EXT D D 0 DC 00 D D FINE POSITION RESET 0 MAGNIFIER 0 READY o XI o XID 8 DELAY MODE A IITEI DURI I D IIII PElDEIT 0 STAII11 AFTER D l AY D Tlll88 RAIU AF...

Page 15: ...ry change the TIME DIV switch setting so the complete area to be magnified is within the center divi sion 3 Press the X10 MAGNI FlED push button 4 Use the fine range of the POSITION control to establi...

Page 16: ...rigger signal amplitude for signals above the minimum amplitude requirement Therefore if the LEVEL SLOPE control is set so the displayed waveform starts at 8 certain percentage point on the leading ed...

Page 17: ...RESET READY pushbutton is pressed as long as the repetitive signal remains connected to the system and TRIGGERING controls are correctly set and further sweeps cannot be presented until the RESET READ...

Page 18: ...AUTIl IlIlIII I S fIIGU J I IMW Operating Instructions Type 7851 AC LF REJ In the AC LF REJ position DC is rejected and low frequency trigger signals below about 30 kilohertz are attenuated Therefore...

Page 19: ...rm to left of control To the right of center the display starts on the negative going portion of the waveform notice negative going waveform The effect of the LEVEL SLOPE control on the displayed wave...

Page 20: ...slope j I f r 7 I r J f 7 Positive I 1 slope J V I 1 r T W I If r 1 II 1 IV I 11 r y J J Negative THIrD LEVEL SLOPE 1 1slope 7 7 r I 1 I f t 11 V U CRT displays obtained with LEVE L SLOPE control in...

Page 21: ...tion can be viewed by adjusting the horizontal POSITION control to bring the desired portion onto the viewing area The dual range feature of the horizontal POSITION control is particularly useful when...

Page 22: ...of the signal covers an 01 Operating Instructions Type 7B51 exact number of horizontal divisions Do not change the VARIABLE TIME DIV control after obtaining the desired deflection This display can be...

Page 23: ...splay 6 Adjust the vertical POSITION control to move the points between which the time measurement is made to the center horizontal reference line 7 Adjust the horizontal POSITION control to position...

Page 24: ...rate that displays less than eight divisions between the 10 and 90 points on the waveform 7 Determine the 10 and 90 points on the rising portion of the waveform The figures given in Table 2 1 are for...

Page 25: ...divisions between pulses Adjust the A Triggering controls for a stable display 4 Set the A Time Base B DELAY MODE selector to B STARTS AFTER DELAY 5 Set the B Time div to a setting 1 100 of the A TIM...

Page 26: ...Instructions Type 7851 4 Set the A TIME DIV to a sweep rate which displays the complete waveform 5 Position the start of the intensified portion with the DELAY TIME MULTIPLIER dial to the part of the...

Page 27: ...ion of the waveform cannot be viewed in any greater detail because the sweep is triggered by the larger amplitude pulses at the start of the display and a faster sweep rate moves this area of the wave...

Page 28: ...tion Refer to these diagrams throughout the following circuit description for electrical values and relationship BLOCK DIAGRAM General The following discussion is provided to aid in under standing the...

Page 29: ...USH BUTTONS SELF CANCELLIN _ _____ ICOUPLINGI S140 i AC HF I ACLF REJ II SOURCE I REJ T T imilLINE I IEXT I _____ J T 1 1 ___ 1 T T T r j I I I I __ I J L __ I I I I I I 1 I _ ___O n i 145B 145C R143_...

Page 30: ...neral The Trigger Generator circuit produces trigger pulses to start the Sweep Generator circuit These pulses are derived from either the internal trigger signal from the Ver tical Deflection System a...

Page 31: ...held constant by the level control voltage the current through 0234 decreases The increase in current through 0224 makes the base of 0244 less positive and the decrease in current through 0234 makes...

Page 32: ...ases CR246 and holds 0260 cut off With 0260 cut off CR255 is reverse biased Now the collector current of 0254 must flow through CR256 and the parallel combination of CR262 and R267 C267 L267 to the 15...

Page 33: ...the slope comparator stage is routed through the trigger TD stage by the SLOPE switch The series parallel combination of L267 R267 C267 with 0266 provide a resistive load for CR262 and form a 3 6 Schm...

Page 34: ...UTO MODES Circuit Description Type 7851 With no trigger pulse applied to the circuit 0273 is at a low current level The anode of CR275 is at ground poten tial This clamps the base of 0275 at about 0 7...

Page 35: ...F to Sweep E Sweep Reset Gate Stage Multivibrator REMOTE READY r Q432 Q436 LAMP Circurit t l Sweep Holdoff Multivibrator Q554 Q564 Q566 to 1 4 Indicator Oscilloscope Lamp L Driver 5 V Q442 Q446 Reset...

Page 36: ...s collector voltage 1MI LLMAN TAUB pp 540 548 Circuit Description Type 7B51 CR597 and CR598 switch the current in R596 to 0592B to make a more definite step The negative going voltage at the collector...

Page 37: ...Reset Amplifier Stage Single Sweep Reset Amplifier The Single Sweep Reset Amplifier produces a negative pulse to reset the Sweep Re 3 10 set Multivibrator stage so another sweep can be produced in the...

Page 38: ...7851 Ouiescently with the DELAY MODE switch set to a delay mode 0520A having the most positive gate is con trolling the Delay Pickoff circuit The output at the emitter of 0496 is at about 3 6 volts w...

Page 39: ...ch part of the TIME DIV switch are used to signal 3 12 the Indicator Oscilloscope of the setting of the TIME DIV switch Refer to Schematic Diagram 4 Timing Switch at the back of the manual to find the...

Page 40: ...h is particularly useful for dislodging dirt on and around the front panel controls Dirt which remains can be removed with a soft cloth dampened in a mild detergent and water solution Abrasive cleaner...

Page 41: ...olor coded in picofarads using a modified EIA code see Fig 4 1 Diode Color Code The cathode end of each glass encased diode is indicated by a stripe a series of stripes or a dot For most silicon or ge...

Page 42: ...ering can be obtained in the EXT mode but cannot be obtained in the INT mode the trigger pre amp or the input coupling circuit is probably at fault When trouble symptoms appear use the front panel con...

Page 43: ...0 divisions IN pushed inl yes Iyes Check hori Set the TIME DIV to 5 ms and press the Xl0 MAG no zontal pre NIFIER button Check for about 5 complete amp Check cycles l0 divisions relay K780 yes NOTE An...

Page 44: ...output with test os cilloscope output COUPLING to EXT not lit Check trigger Check for sweep l _n_o_t_l_it_ __ and apply a 1 kHz I _Igenerator cir TRIG D light signal to the EXT cuit lit Check sweep g...

Page 45: ...ent High currents may damage the diode 4 6 D RESISTORS Resistors can be checked with an ohmmeter Check the Electrical Parts List for the tolerance of the resistors used in this instrument Resistors no...

Page 46: ...ond the circuit board and clean off any residual flux with a flux removing solvent Be careful that the solvent does not re move any printing from the circuit board Metal Terminals When soldering metal...

Page 47: ...circuit board Transistors m m C B B E E II NOTE The spring tension of the terminal sockets ensures a good connection between the circuit board and the pin This spring tension can be destroyed by usin...

Page 48: ...ON LEVEL SLOPE TIME DIV and VARIABLE knobs 2 Remove the front panel to gain access to the switch mounting screws Maintenance Type 7B51 3 To remove the B DELAY MODE switch remove the two phillips head...

Page 49: ...Maintenance Type 7851 4 10 Fig 4 4 Trigger genenltor bMrd front view showing 10000tion of components l...

Page 50: ...i UlIO_ _ _ lim_lis _ _01_ _ _10_ _ Fill 4 5 Tim Base bourd Ilront V IIW howi lliocal on of compon nu Maintenance Type 7851 4 11...

Page 51: ...Maintenance Type 7851 I 1 FIt 4 6 Inttrf_ board leh llde Ihowlng loc ation of eomponentl 4 12...

Page 52: ...Maintenance Type 7851 Flog 4 s SoUrcI lWitch boIIrd lhowfl l9 loc t1on of components 4 13...

Page 53: ...O OCN Icao eso 0 CRO Fig 4 9 Interface board right side showing location of square pin connectors OAH oR Os oAM oAI oAJ OAk OAL OP oa o a 0 o A B AO o AP I BNa BI 0 8J a I INTERFACE BOARD BK a a BR TI...

Page 54: ...were taken with a Tektronix Oscilloscope Camera System Limits tolerances and waveforms in this procedure are given as calibration guides and should not be interpreted as instrument specifications exc...

Page 55: ...11 0049 01 15 Adapter GR to BNC female Tektronix Part Number 017 0063 00 5 2 SHORT FORM PROCEDURE Type7B51 _______________________________ Calibration Date Calibrated By ______________________________...

Page 56: ...rement No shift of display when switching MAGNIFIER between X1 and X10 Performance Correct ___ Incorrect___ 12 Check Sweep Length Page 5 9 Requirement Sweep length must be between 10 and 13 divisions...

Page 57: ...quirements of the equipment used Detailed operating instructions for the test equipment are not given in this procedure Refer to the instruction manual for the test equipment if more information is re...

Page 58: ...sary Alter nate between 0 and 0 while adjusting R385 for optimum triggering on both the positive and negative slopes of the signal 2 Check A djust p p AUTO LEVEL Range R335 R336 a Reset the Type 7851...

Page 59: ...settings as follows Type 7A16 Volts div 1 V 5 6 TIME DIV TRIGGER ING COUPLING MODE SOURCE Type 7851 DC AUTO INT b Connect a 1 kHz square wave from the Type 106 Hi Amplitude output through a GR to 8NC...

Page 60: ...Check Calibration Type 7B51 7 Check Sweep Jitter a Set the Type 191 to 75 MHz Set the Type 7851 TIME DIV to 05 1S and MAGNIFIER to Xl0 b CHECK For no more than 0 2 div 1 ns of jitter Disregard any slo...

Page 61: ...cy sine wave generator to 50 Hz and adjust the amplitude for a 2 division display o CHECK A stable display can be obtained p Remove the 50 Hz signal from the Type 7A16 and Type 7851 9 Check Adjust Swe...

Page 62: ...tical line f Alternately switch the MAGN IFIER between Xl and X10 and repeat steps b through e until no shift occurs when switching 12_ Check Sweep length a Set the time mark generator for 1 ms and 1...

Page 63: ...SITION control as necessary to line up display 15 Check Adjust 0 2 Timing C530l a Set the time mark generator for 1 l ls markers b Reset the Type 7851 TIME DIV to 2lJs c CHECK CRT display for two mark...

Page 64: ...l Slope control for a triggered display d Reset the Test Time Base B Display Mode to B Starts After Delay Performance Check Calibration Type 7B51 e CHECK While rotating the Test Time Base Delay Time M...

Page 65: ...portion of the sweep starts at the second marker see Fig 5 8 d ADJUST Delay Start R590 so the intensified portion of the sweep starts at the second marker e Reset the Type 7B51 DELAY TIME MULTIPLIER t...

Page 66: ...is within the given tolerance_ First set the DE LAY TIME MULTIPU ER near 1_00 Adjust the DELAY TI ME MULTI PU ER until the second marker starts at the beginning of the delayed 8 sweep note the devia t...

Page 67: ...rt in 50 000 of 10 times the TIME DIV setting See Fig 5 11 Disregard any slow drift 5 14 d Disconnect the time mark generator 23 Check Line Trigger Source a Change the following control settings TRIGG...

Page 68: ...height or high hexagonal hex head brass hex head steel hex socket brass hex socket steel inside diameter incandescent int Ig met mtg hdw OD OHB OHS P O PHB PHS plstc PMC poly prec PT PTM RHB RHS SE S...

Page 69: ...information in your order Part number instrument type or number serial or model number and modification number if applicable If a part you have ordered has been replaced with a new or improved part yo...

Page 70: ...E BASE Circuit Board Assembly Page No 6 1 6 2 6 3 TRIGGER Circuit Board Assembly 6 11 DELAY MODE Circuit Board Assembly 6 17 SOURCE Circuit Board Assembly 6 17 MODE AUTO Circuit Board Assembly 6 18 CO...

Page 71: ...Cer 500 V 1 Timing capacitor assembly B019999 Receptacle electrical BNC Receptacle electrical BNC Resistors Resistors are fixed composition 10 unless otherwise indicated R141 R142 R260A B1 R505 R531 R...

Page 72: ...00 1 kn R383 315 0432 00 4 3 kn R460 315 0472 00 4 7 kn R461 315 0752 00 7 5kn R530A 323 0568 08 8 06 Mn R530B 323 0557 08 6 19Mn R530C 323 0546 08 4 75 Mn R530D 323 0546 08 4 75Mn R530F 323 0767 07 1...

Page 73: ...1 4 W 1 4 W 1 4 W W 1 4 W W l S W 1fsW 1fsW 1 4 W 1 4 W 1 4 W TIME BASE Circuit Board Assembly B010100 B019999 B020000 B049999 B050000 B069999 B070000 B099999 B100000 Complete Board Complete Board Com...

Page 74: ...0 25 pF Cer 500 V C561 290 0136 00 2 2 uF Elect 20V C580A 283 0164 00 2 2 uF Cer 25V C580B 283 0191 00 0 022 uF Cer 50V C580D 283 0666 00 890 pF Mica 100V 2 C581 281 0546 00 XB070000 330 pF Cer 500 V...

Page 75: ...on Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silic...

Page 76: ...0 01 151 0261 00 151 1036 00 151 0289 00 TIME BASE Circuit Board Assembly cont Serial Model No Eff Disc Description Semiconductor Device Diodes cont Relay Silicon Silicon Silicon Silicon Silicon Silic...

Page 77: ...29 00 R434 321 0265 00 R435 321 0244 00 Electrical Parts List Type 7851 TIME BASE Circuit Board Assembly cont Serial Model No Eff Disc Transistors cont Silicon B01 01 00 B099999 Silicon B100000 Silico...

Page 78: ...1 0271 00 6 49kn l S W Prec 1 R465 321 0234 00 2 67 kn l s W Prec 1 R466 321 0277 00 7 5 kn l S W Prec 1 R468 321 0306 00 15 kn 1fsW Prec 1 R469 321 0209 00 1 47kn s W Prec 1 R470 321 0230 00 XB070000...

Page 79: ...Prec 1 R534 322 0281 00 8 25 kn 1 4 W Prec 1 R536 315 0220 00 22n 1 4 W 5 R537 308 0306 00 3 26 kn 3W WW 2 R538 315 01 01 00 lOOn 1 4 W 5 R539 315 01 01 00 100 n 1 4 W 5 R541 315 0131 00 130 n W 5 R5...

Page 80: ...Prec 1 2 R748 315 0220 00 22n 1 4 W 5 R749 321 0373 00 75 kn l S W Prec 1 R755 303 01 03 00 XB050000 10kn lW 5 R761 321 0225 00 2 15 kn l S W Prec 1 R763 323 0205 01 1 33 kn 1 2 W Prec 1 R764 303 030...

Page 81: ...0 V C10S 281 0509 00 15 pF Cer 500 V 10 C107 283 0080 00 0 022 p F Cer 2SV 80 20 C112 281 0547 00 2 7 pF Cer 500 V 10 C114 283 0000 00 0 001 p F Cer 500 V C118 290 0177 00 1 p F Elect SOV C121 281 051...

Page 82: ...itors cont 0 022 j tF Cer 12 pF Cer 0 001 j tF Cer 0 022 j tF Cer 8010100 8089999 2 7 j tF Elect 8090000 4 7 j tF Elect 4 7 j tF Elect 0 022 j tF Cer 0 01 j tF Cer 2 2 j tF Elect 22 fLF Elect 0 001 fL...

Page 83: ...0 01 151 0188 00 151 0188 00 151 0190 01 151 0188 00 TRIGGER Circuit Board Assembly cont Serial Model No Eff Disc Inductors 0 09 fLH 80 nH Electrical Parts List Type 7B51 Description Toroid 14 turns s...

Page 84: ...0821 00 820 n 1 4 W 5 R122 321 0250 00 3 92 kn lis W Prec 1 R126 315 0101 00 lOOn 1 4 W 5 R128 315 0301 00 300n 1 4 W 5 R129 315 0510 00 51 n 1 4 W 5 R132 321 0210 00 1 5 kn lis W Prec 1 R133 321 032...

Page 85: ...275 315 0201 00 2000 1 4 W 5 R276 315 0752 00 7 5 kO 1 4 W 5 R277 315 0303 00 30ko 1 4 W 5 R282 315 0271 00 2700 1 4 W 5 R283 315 01 03 00 10 kO 1 4 W 5 R286 315 01 01 00 1000 1 4 W 5 R288 315 0152 00...

Page 86: ...0 15 00 9 1 Mn 4 w 5 R353 315 0154 00 150 kn 4 w 5 R354 315 0101 00 lOOn 4 w 5 R356 315 0915 00 9 1 Mn 4 w 5 R358 307 01 03 00 2 7n 4 w 5 R366 315 0104 00 100 kn 4 w 5 R367 315 0202 00 2 kn 4 w 5 R36...

Page 87: ...Board Assembly 670 1104 00 Complete Board D5140 150 0057 01 Tolerance 20 unless otherwise indicated C140C C140E 281 0123 00 281 0610 00 Bulb Incandescent Capacitors Resistors 5 25 pF Var 2 2 pF Resis...

Page 88: ...ch Complete Board Incandescent Incandescent Pushbutton COUPLING Circuit Board Assembly Complete Board Bulb Incandescent Capacitors indicated 200 pF 2 2 pF 12 pF 2 8 pF Yar 0 02 fLF Resistors Resistors...

Page 89: ...7B51 MAGNIFIER Circuit Board Assembly Serial Model No Eff Disc Description 670 1107 00 Complete Board Bulb 150 0057 01 Incandescent 71S3A51S selected Switch Wired or Unwired 670 1107 00 Pushbutton MA...

Page 90: ...tment Front or rear panel control or connector_ o Refers to the indicated diagram_ Connection soldered to circuit board_ VV r 7 Blue line encloses components located on circuit board Test point FOCU I...

Page 91: ...LOPE TRIGGERING MODE COUPLING SOURCE MAGNIFIER TIME DIV B DELAY MODE EXT TRIG IN 0 P P AUTO AC EXT Xl As shown on waveform I NDEPENDENT except as noted Connected to CALIBRA TOR VOLTS output con nector...

Page 92: ...SI40 o OUI c I IeXT _RIG I_ TRIG c E AMP E T ING L AI 5 I SW E P 8 E a TYP 7 e 51...

Page 93: ...INE AU O MU T Q275 Q28S 5W E E P G A T 0 l C R 2 99 Q OS 0 3 5 AU Q COMPf RA OR Q324 Q31 1O G A T M T R FO O Q319 SWE tP S AR T SM T R FOLLOW R 0 40 1 _ _ r _ Jo 3 25E 11 _ 5E 1 S lG E WE E P C RC IJ...

Page 94: ...I sw E P c N E RA 0 R f __ I Q532 Q534 R5 O C5 O 1 AY 1 1 I MUL L c R O C AY COMPARATOR_ r 0 5 0 Q520 r U C LAY HUI TIVIBRATOR O C LAY AT C 0 471 Q4E 2 Q491 I J E 1 1 iT C R FOLLOW R Q4 Ho I I _ l w E...

Page 95: ...o 001 TPIO Cll2 QIOJ 0 1 CIOJ 0 0 fl IIJ 15 8 TRIG Ir7 II Ri ll 53 INTEFIFAct RI32 1 5K R 13 3 n 1K INTERNAL clR GGER NTERIIo IG OV Rile K 15V PARTiAi TRIG TYPE 7851 ell6 F Q 118 RII9 15V GEIl SOARC...

Page 96: ...I I I I I o L 0 I I I I r J I I I I I I I I I I I I I f I 10 I J o I I RI40F I o t 15 L ___ R1 ol 0e I 45 1 I 1 4 01 I 2 0 1 l140G 1 14 0 0 5 2 o S 4 C OUPI I G I fE FER EN C OI GoRAM o TR IG HR I N i...

Page 97: ...C PIN a C __ b I sv J5v T OJ U Jg fI C2 4i 00 c u l 1I rr 1101 Q2 3A oj 5V _____ _ o TYPE 785J IUL oK I f t i t i r U6 TO RZ4 I I SI I A U4 234 0 Q 1 __ Q f_pr O Tj f_T n 1 r CRUS NI w C217 mOU L5V Ot...

Page 98: ...OI tll30 w m IUU HI W ISY UV J ____J 7 1 R U 7 OJ1 7 I SK 0 L VtL nUt 4 C l Us 011 67 n 1 1 TI t S u I V ISV _ _ _ _ 00 IU0 7 I t f t RJU Q315 lUll 00 Q319 L ____ ______I o 5V 0511 IU Clt177 Q27S 0 _...

Page 99: ...TYP E 785 1 _ _ _ i9S iO pt 3 c 2vf R t 15V 1...

Page 100: ...j5V Q54 i OTU to Lin C ucTo TYPU...

Page 101: ...I L O I O t r 0 0 0 T L TYPE 7851 T NG C 5 5 0 C IT O _________J O 1 0 0 6 9M 30C 1 0 as 3 10 4 f c I30J 7 L _ _____ T N O 9 5 0 ___...

Page 102: ...TC 0 O T D 2 0 29 _ _ _ P T T O sc C O TO Tv 0 Hi I __ 02 _ 31 Rn O rl 0 f tE _ I J A l 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 CO U N CV Ow 0 0 r 0 2 to n Z n U 0 0 0 0 0 0...

Page 103: ...R TOR Ol C O U P IN C 4 O V i P U T C ONN C T O R 0 W TC H C O I A GoI t M R71 I l I R 1 1 33 1 A 71 3 4 r I V Li PART I T F O R S 1 I1C O NO U C T O R TV P TYPI 7 BS I TR N So I l O R I N L T r MP T...

Page 104: ...ISV DCPL 0 o 50 7eo p lMAC N F I E R Z I O r _ f All JIV t S Q 7 94 nal 001 IC 1iiI 1 l7e 0 1 9 R H 0 S OCPl 0 R Go NTi RFAC L 1 OA C HORIZONTAL PR AMP 1 70 o...

Page 105: ...1 1 1I a i 1 rl a s 1 1 R 5 t c fle I c t i Ra c no 00 1 1 lP 10 10 T 0 1 1 1 SOY 1 I I 7 2 1 1 1 TRI C I PIll AH L I LII I I LIl Goi LIl I OIl Mi e L C L LII OIl TIM G o I oi O rON L PIlLAMPL f r 1 l...

Page 106: ...I TI NAL 1i AO INO t I O 1 V Hv ATL RLTURN 1 O 0 I LIHI TRU c I Ow LP I I J SWLL P C ATr TOP WTOrH UT I 1 I I I 1 I I 1 I I I I _ AU 1 0 1 0 D T Il IC C I A I N 1 lIO V 7 1 I I I 1 I I IC N L _ I 0 D...

Page 107: ...ONTAI PR Ii AMPI IPlIi R t OLC OU Pi NC t OUTPU T C ONNr c TOP T YP 7 051 50 0 1 7110 b II Cc Pl 0 C p teo I I I I I I I I I I I I I I I I I I I I I I l V T f J 0 0 A rl 4 I TR Cot Rt e D e 4 Jo C 4 C...

Page 108: ...0 4R O I I O r 10 401 Oc 40 FlU R e o otc p o 0 14 I H r J 1 01 ffil 1 Ulle I E I c y 1 011 R t V 3 cc R oc I 0 MOCLI I eo IT II TR G c I FTIlR CoIoLAV FTE 0 i 1 I NDE PI NDU n 1 T T Sl I L _ _ b VO...

Page 109: ...l 5 L 133 TYPE 7851 DELAY ING T IME BASE FIGURE 1 EXPLODED 116 C Q I...

Page 110: ...EXPLODED IRE 1 130 133 j II...

Page 111: ...ust be purchased separately unless otherwise specifiea PARTS ORDERING INFORMATION Replacement parts are available from or through your local Tektronix Inc Field Office or representative Changes to Tek...

Page 112: ...Type 7851 INDEX OF MECHANICAL PARTS ILLUSTRATIONS Title Location reverse side of Figure 1 Exploded Switching Diagram...

Page 113: ...lat ID x 1 2 inch OD NUT hex 32 x 5 16 inch KNOB gray POSITION KNOB gray POSITION knob includes SETSCREW 5 40 x 0 125 inch HSS KNOB gray FINE KNOB gray FINE knob includes SCREW set 2 56 x 3 32 inch HS...

Page 114: ...B010100 B020479 6 SOCKET pin terminal 136 0327 01 B020480 6 SOCKET pin terminal 28 131 0589 00 4 TERMINAL post 0 52 inch mounting hardware not included w assembly 29 211 0156 00 2 SCREW 1 72 x 0 250 i...

Page 115: ...circuit board INTERFACE ASSEMBLY circuit board INTERFACE assembly includes BOARD circuit DRUM cam switch TIME DIV or DLY TIME BEARING rear BEARING front BRACKET support RING RETAINER ROLLER detent SP...

Page 116: ...MBLY circuit boord TIME BASE ASSEMBLY circuit boord TIME BASE assembly includes 1 BOARD circuit 1 BOARD circuit 29 SOCKET transistor 3 pin 30 SOCKET transistor 3 pin 4 SOCKET transistor 6 pin 42 SOCKE...

Page 117: ...192 00 361 0326 00 133 337 1 064 00 070 0976 00 8010150 1 HOLDER terminal connector 7 terminal 23 CONNECTOR AWG 22 to 26 wire 1 HOLDER terminal connector 4 terminal 1 HOLDER terminal connector 3 termi...

Page 118: ...mediately into printed manuals Hence your manual may contain new change information on following pages A single change may affect several sections Sections of the manual are often printed at different...

Page 119: ...EMOVE TP490 214 0579 00 Circuit Board Assembly Complete Board Test Point SECTION 8 CHANGE TO MECHANICAL PARTS LIST CORRECTION Page 8 1 Fig 13 670 1103 02 1 CIRCUIT BOARD ASSEMBLY B DElAY MODE 388 1337...

Page 120: ...8 01 Incandescent S140 670 1104 01 Pushbutton SOURCE MODE Circuit Board Assembly CHANGE TO 670 1105 01 Complete Board DS325 150 0048 01 Incandescent DS446 150 0048 01 Incandescent S325 670 1105 01 Pus...

Page 121: ...EMBLY pushbutton switch B DELAY MODE 17 670 1105 01 1 ASSEMBLY pushbutton switch MODE Triggering Page 8 2 CHANGE TO Fig 1 22 670 1106 01 1 ASSEMBLY pushbutton switch COUPLING Triggering 26 670 1104 01...

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Tektronix 7B51, Instruction Manual

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