Tektronix 555/21A Instruction Manual Download Page 1

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Summary of Contents for 555/21A

Page 1: ...INSTRUCTION IVIANUAL Serial Number ______ Tektronix Inc S W Millikan Way e P 0 Box 500 Beaverton Oregon 97005 Phone 644 0161 Cables Tektronix 070 403 464...

Page 2: ...ield there all requestS for repairs and replace pad should be directed to the Tek ix Field Ofti or Representative in your This procedure Witl as s_ ure you the possible service Please inc illililrnrn...

Page 3: ...listed commercial publication is supplemented as follows for official use Marma1 Chaage Modification Insert Type 555 Mod 101D Copyright 1966 Reference Page 1 1 Table 1 1 Delete the risetime of 1114 5...

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Page 6: ...iv...

Page 7: ...on the oscilloscope screen VERTICAL DEFLECTION SYSTEM Characteristics for both vertical channels of the oscillo scope are identical The actual specifications depend pri marily on the vertical plug in...

Page 8: ...ling Positive or negative slope oc or de coupled 1 2 Triggering Signal Requirements 15 N 11000 upl Internal Signals producing a mm1mum of 0 2 centimeter of vertical deflection AC only up to 1 kc or 2...

Page 9: ...located on the front panel of the power supply unit ore 7 amp slow blowing for the AC Heater and 5 amp slow blowing for the DC Supplies for 117 volt operation 4 amp slow blowing for the AC Heaters an...

Page 10: ...e to 6 kc risetime is approximately 60 microseconds Strain sensitivity is calibrated in 10 steps from 10 microstrain to 10 000 microstrain per major graticule division and is con tinuously variable be...

Page 11: ...re allowed to occur at random or at some rate not related to the repetition rate of the input signal the displayed waveform would be traced out at a different horizontal position each time and the wov...

Page 12: ...installed or connected by extensions Operating the instrument with a plug in unit missing will not damage the oscilloscope but may cause the power sup plies to go out of regulation due to insufficien...

Page 13: ...zontal deflection produced by externally applied voltage Horizontal deflection factor is continuously variable from approximately 0 2 to 2 volts em with HORIZ DISPLAY switch EXT AT TEN X1 from 2 to 20...

Page 14: ...Operating Instructions Type 555 21A 22A Fig 2 3 Front and rear panel controls and connectors 2 4...

Page 15: ...ertical centerline and the two horizontal centerlines The deflection factors of the crt beams are calibrated to these graticule marks Thus the marks provide a calibrated scale for making time and volt...

Page 16: ...ig 2 5 TRIGGERING THE SWEEP For most applications the oscilloscope sweep must be trig gered by some signal that is time related to the input signal being observed on the crt This section discusses the...

Page 17: ...ed to the Trigger circuit The AC position of the COUPliNG switch is used for most appli cations since triggering is then not affected by the vertical position of the waveform on the crt screen The DC...

Page 18: ...centimeter of the magnified sweep is found by multiplying the reading of the TIME CM switch by 0 2 or by dividing by five If sweep magnification greater than 5X is required use the delayed sweep magn...

Page 19: ...or and will present a stable waveform on the crt Set the TIME CM switch and VARIABLE control to produce the desired repeti tion rate This may be observed by monitoring the output waveform with the oth...

Page 20: ...magnification are described in the following paragraphs Use of the delayed sweep for making time measurements is given in the Applications section of this manual MODE 1 SWEEPS ONCE FOR EACH A DLY D T...

Page 21: ...xomme any section of the waveform that does not occur immediotelr after a triggering point The delayed sweep mode prov1des a means of delaying the start of each sweep by a sel cted amount following th...

Page 22: ...oster than that of Time Bose A 25 volts amplitude from Gate 150 volts from Sawtooth Monitor the Time Bose B output waveform with another oscilloscope to set up the repetition rote and duty factor The...

Page 23: ...channel If the time relationships of the signals are of inter est an external trigger signal can be used or the triggers Operating Instructions Type 555 21A 22A can be derived from a time related sin...

Page 24: ...NOTES...

Page 25: ...sed for accurate measurements Always check the gain of the vertical plug in unit before making voltage measurements Set the input attenuotor to 05 volts em and check for 2 em of deflection with a 1 vo...

Page 26: ...mes through use of the HORIZ DISPLAY switches for increased resolution The sweep rote is then determined by multiplying the TIME CM setting by 0 2 In addition the Time Bose A sweep may be magnified fr...

Page 27: ...ned portion to the first point on the Upper Beam display at the beginning of the time interval to be measured Then observe the magnified display and position the corresponding point in the lower Beam...

Page 28: ...gnals at their sources they should be applied to the INPUT con nectors through similar lengths of coaxial cable Triggering of the two trace displays must be from a single source 3 4 Dual Beam Phase Me...

Page 29: ...hen compared directly to each other and indirectly to the triggering signal If a multi trace plug in unit with single channel triggering is used this method should be used rather than external trigger...

Page 30: ...NOTES...

Page 31: ...it produces a square wave output waveform that can be used for checking the calibra tion of the vertical deflection systems or for adjusting the compensation of probes The low Voltage Power Supplies p...

Page 32: ...RIZONTAL I PICKOFF V _ AMPLIFIER CIRCUIT UPPER BEAM IDELAYED k H CRT r CRT TRIG OUT P CIRCUIT LOWER BEAM riL Z R v fEXT HORIZ I EXTERNAL HORIZONTAL f INPUT AMPLIFIER l 6 3 VAC 0 I L I I I t I TIME BAS...

Page 33: ...provide adjustment of the line characteristics for minimum distortion of the signal A total of about 200 nanoseconds of signal delay is pro vided with approximately 15 nanoseconds of delay occur ring...

Page 34: ...frequency or an external signal applied through the trigger INPUT connector Use of the plug in units for triggering sources is limited to operation with multi trace plug in units with in ternal trigg...

Page 35: ...g point Current through 040 and R36 sets the voltage at the anode of series diode 042 at about 0 6 volt With the voltage on the cathode of 042 set at about 0 5 volt this diode has o forward voltage ap...

Page 36: ...r I I I I I I I I I ITIME CM I I I I I I I I I I I I I I I I I I I I I l TO t _ HORIZONTAL I I 1 G I I I I SAWTOOTH CF V183B AMPLIFIER sAWTOOTH r S N 11000 UP 9 AUTO BASELINE P H j_ Jb I SINGLE SWEEP...

Page 37: ...ircuit Description Type 555 21A 22A to the delayed sweep Fig 4 5 is a block diagram of the Time Base Generator showing the basic circuits and differ ences between the two units The following circuit d...

Page 38: ...serving as a cathode follower for the stability voltage Auto Baseline Circuit V1 1SA and 0104 are conducting and V1 1SB is cut off With the grid of V1 15A held at about 18 volts with SWEEP FUNCTION a...

Page 39: ...ility voltage applied to the grid of V1 35A through cathode follower Vl25 is set with the STABILITY Circuit Description Type 555 21A 22A control Rl 11 so that with the SWEEP FUNCTION switch set at NOR...

Page 40: ...triggering rate the stability voltage is held positive and the lower limit of the holdoff waveform is held at the triggerable level Triggering then occurs exactly the same as it would with the SWEEP F...

Page 41: ...ed trigger pulse is applied to the grid Circuit Description Type 555 21A 22A of V114 in the Type 22A Time Base B The pulse is ampli fied by V114 and applied as a negative pulse to the grid of V133A Th...

Page 42: ...ime Base A crt beam on the screen at the time of comparison Constant Current Tube V568A is a constant current source for the difference ampli fier The voltage divider R565 and R566 set the grid of V56...

Page 43: ...ion of the circuit When the switch is in one of the Xl positions the time base signals are applied to the driver cathode fol lower through a compensated attenuator and are attenuated by a factor of 5...

Page 44: ...of about 10 000 volts Approximately 1350 volts of this is supplied by the crt nega tive supply circuits and the remaining 8650 volts is provided by the post acceleration circuit High Voltage Negative...

Page 45: ...IZ AMP and VERT AMP GEOM ADJ 1 LOW EAM HV ADJ o 1 REGULATOR 1 f V914A V914B LOWER 1 ASTIG FROM LOWER BEAM LOWER BEAM____ CHOPPED VERTICAL BLANKING PLUG IN V534B ICRT CATHODE I I 0 CRT V859 Circuit Des...

Page 46: ...lifier tube V524B shown on the Horizontal Display Switching diagram V534B is the amplifier for the lower Beam The signal is amplified and inverted then applied through the CRT CATHODE switch to the cr...

Page 47: ...100 volt supply is the 150 volt supply The voltage div1der R650 R651 compares the 100 volts and the 150 volts Any voltage changes at the 1DO volt output produce small changes at the grid of V664 The...

Page 48: ...ough the winding connected between terminals 5 and 6 of the satur able reactor l790 A decrease in current through the wind ing increases the reactance of l790 to the line voltage de creasing the ampli...

Page 49: ...screwdriver or a small coin Turn each fastener about two turns counterclockwise to free the panel For normal operation it is advisable to leave the side and bottom panels on the units to keep out dust...

Page 50: ...or some part of the system is out of calibration Check the calibration of any suspected circuit before attempting to troubleshoot the instrument A com plete calibration procedure is given in the Calib...

Page 51: ...1A 22A Ceramic Strip Replacement To replace a damaged ceramic terminal strip first unsolder all connections then pry the mounting studs attached to the strip out of the chassis If prying is not satisf...

Page 52: ...is essentially the same as that described except for the references Ia the eyebrow light pipe etc When installing a new crt af this type position it so the brush contact inside the crt shield touches...

Page 53: ...w voltage test points indicated in the calibration procedure The low voltage supplies should be checked for ripple and regulation as well as for output voltages CAUTION Do not adjust the 150 ADJ contr...

Page 54: ...eflection system in the Indicator Unit Check the time base plug in units by reversing the settings of both HORIZ D SPLAY switches or by substituting other time bose units for those presently being use...

Page 55: ...amplifier section of the vertical amplifier the replacement tubes should be a balanced pair Circuit Troubleshooting When the trouble has been isolated to a particular circuit perform a complete visual...

Page 56: ...on that diagram In the instrument the circuit number of each tube tran sistor electrolytic capacitor and internal control is marked 5 8 on the chassis near the component These numbers provide conveni...

Page 57: ...alling a replacement tube or transistor be sure that the circuit voltages are approximately normal If re Maintenance Type 5SS 21A 22A placement is made without checking the circuit the new wm ponent m...

Page 58: ...NOTES...

Page 59: ...th 6 deflection fac tor range from 05 to 20 v em 20 pf inp f apacitance and a bandpass to at least 20 me with the Tk EI 555 see Table 1 1 2 Variable autotransformer e g Powerstat or Variac with an out...

Page 60: ...ween the CRT CATHODE and GROUND con nectors for both beams and that both CHOPPED BLANK ING CRT CATHODE switches are in the CRT CATHODE position Connect the Indicator Unit of the Type 555 to the Power...

Page 61: ...NCTION switch to AUTO BASELINE Connect one end of the coaxial cable to the INPUT connector of the Type K Lower Beam and attach the clip lead adopter to the other end of the coax Increase the Lower Bea...

Page 62: ...t R973 the BEAM ROTATION control The location of the BEAM ROTATION control is shown in Fig 6 5 6 Adjust External Graticule SIN s 7000 8999 Leave the controls set as in the previous step Position the U...

Page 63: ...ines on each of the graticule edge lines If the vertical lines are bowed adjust R961 the GEOM ADJ 1 control to display straight vertical lines parallel to the vertical graticule lines Turn the Upper B...

Page 64: ...er horizontal centerline The waveform should be triggered Set the AMPLITUDE CALIBRATOR switch to 5 MILLIVOLTS The waveform should free run Adjust R25 TRIGGER SENSITIVITY in the Time Bose A plug in uni...

Page 65: ...SITIVITY control R25 the TRIG LEVEL CENT control R26 and the TRIG DC LEVEL controls R8 and R3 in the manner just described for the cor responding Time Bose A controls See Fig 6 9o for the loca tions o...

Page 66: ...ng LOWER BEAM 5 nSEC Centered Vertical Plug In 5 V em cal l DC Connect the coax from the CAL OUT connector to the INPUT of the Type K lower Beam Set the AMPLITUDE CALIBRATOR switch to 50 MILLIVOLTS a...

Page 67: ...n by the procedure just described for Time Base A Remove the coax from the input of the Type K TRIGGER ADJUSTMENTS IS N 7000 109991 The time base triggering adjustments that follow must be made in the...

Page 68: ...A BILITY in the Time Base A plug in unit Trigger the display with the LEVEL and VERNIER controls Increase the Upper Beam intensity to present a free running trace of normal intensity Turn the Time Bas...

Page 69: ...BEAM TRIG DC LEVEL control in Time Base A so the waveform starts positive at the centerline with the SLOPE switch in the position and starts negative at the centerline with the SLOPE switch in the pos...

Page 70: ...eading edge of the middle marker in the Upper Beam display on the vertical centerline of the groticule Now set the Upper Beam HORIZ DISPLAY switch to TIME BASE A X1 The leading edge of the middle mark...

Page 71: ...quired remove the appropriate side panel tem porarily to make the adjustment then recheck the control setting with the side panel in place 21 Check Sweep Rates Front panel controls should be set as f...

Page 72: ...F Range Connect a cable from the trigger output of the time mark generator to the external trigger INPUT on the Time Base B plug in unit The time mark signal should still be connected to the two verti...

Page 73: ...red R e check the settings of both controls if the DELAY STOP control required adjustment Calibration Type 555 21A 22A Fig 6 13 Crt display with the DELAY START control correctly ad justed The brighte...

Page 74: ...UNCTION NORMAL Connect a coax from the trigger output of the time mark generator to the external trigger INPUT on the Time Base A plug in unit and set the generator for 10 microsecond trigger pulses W...

Page 75: ...e Time Bose A sawtooth waveform to the INPUT of the Type K lower Beam unit Set the AMPLITUDE CALIBRATOR switch to 2 VOLTS and trigger the vertical square wove display There must be at least 1 em of ho...

Page 76: ...OURCE Time Base B SOURCE UPPER BEAM LOWER BEAM Vertical Plug In Units Deflection Factor 20 v em cal Input Coupling DC Lay the Indicator Unit of the oscilloscope on one side a Upper Beam Turn off the i...

Page 77: ...regulated de voltages position the free running spot on the lower centerline then switch the input coupling to AC After about 5 seconds switch back to DC and watch the motion of the spot If necessary...

Page 78: ...control center the first positive square wave pulse on the crt screen Compare the display with Fig 6 18 The top of the pulse should be smooth with no irregu larities in excess of one tracewidth The f...

Page 79: ...d below In general these I 11 Fig 6 20 Location of Upper Beam delay line adjustments Calibration Type 555 21A 22A conditions do not become severe until the Vertical Amplifier tubes have changed their...

Page 80: ...pin 1 of V1 064 With a de voltmeter measure the grid bios of each pair of tubes by checking the voltage between the grid line and either cathode pin 2 Replace both tubes of any pair not having bios be...

Page 81: ...ctors should be set at approximately the same depth in the ce il forms Calibration Type 555 21A 22A tl1071 l1073 L1014 l1024 L1036 L1046 L1354 L13SS Fig 6 24 Approximate slug positions in the high fre...

Page 82: ...these two coils will provide sufficient adjustment of the rise and corner if the slug posi tions in the other inductors are approximately correct How 6 24 ever if the risetime is not short enough afte...

Page 83: ...Type K Plug In Unit in the Upper Beam com partment and the other vertical plug in unit in the lower Beam compartment Allow 10 to 15 minutes warm up Set front panel controls as follows Upper Beam HORIZ...

Page 84: ...Gate waveform for an amplitude between 20 and 35 volts Remove the probe c B Sawtooth and Gate Reset the following controls 6 26 TIME CM LEVEL TIME CM Time Base A 2mSEC Time Base B Clockwise 5mSEC Upp...

Page 85: ...ectrolytic metal cased electroyltic metal tubular external farad focus and intensity flat head steel fillister head steel gigo or 109 germanium guaranteed mm1mum value henry hexagonal hex head steel h...

Page 86: ...Parts List Type 555 EXPLODED VIEW FRONT GROUP 7 2...

Page 87: ...inch HSS 5 366 0033 00 7000 10869 1 KNOB INTENSITY UPPER BEAM small black 366 0148 00 10870 1 KNOB INTENSITY UPPER BEAM small charcoal Includes 213 0004 00 1 SCREW set 6 32 x 3 16 inch HSS 6 401 0004...

Page 88: ...X 1 GRATICULE 5 inch 21 200 0382 00 1 COVER graticule Includes 354 011 6 00 1 RING ornamental Mounting HQ dware not included 210 0424 00 4 NUT knurled graticule lfe 24 x 9 16 inch 21 0 0816 00 4 WASHE...

Page 89: ...BNC female 37 366 0033 00 7000 10869 1 KNOB SCALE ILlUM small black 366 0148 00 10870 1 KNOB SCALE ILlUM small charcoal Includes 213 0004 00 1 SCREW set 6 32 x 3 16 inch HSS 38 331 0022 00 7000 10869...

Page 90: ...ernal 6 210 7 00 3 NUT hex 6 32 x 1 4 inch 54 386 0610 00 1 PlATE plug in housing bottom Mounting Hardware not included 211 559 00 4 SCREW 6 32 x 3fa inch FHS phillips 210 57 00 4 NUT keps 6 32 x 5 16...

Page 91: ...00 2 CLAMP cable 7 16 inch Mounting Hardware For Each not included 211 0513 00 1 SCREW 6 32 x inch BHS 21 0 0457 00 2 NUT keps 6 32 x 5 16 inch 21 0 0803 00 2 WASHER 6Lx3fa inch 67 343 0004 00 1 CLAMP...

Page 92: ...Mounting Hardware For Each not included 211 0534 00 2 SCREW 6 32 x 5 11 inch PHS with lockwasher 21 0 0006 00 2 lOCKWASHER internal 6 210 0407 00 2 NUT hex 6 32 x 1 4 inch 79 200 0256 00 1 COVER capa...

Page 93: ...ex 6 32 x 1 4 inch 92 406 0576 00 1 BRACKET miniature pot Mounting Hardware not included 211 0504 00 2 SCREW 6 32 x lf4 inch PHS Mounting Hardware For Miniature Pot not shown 210 0583 00 1 NUT hex lf4...

Page 94: ...Parts Ust Type 555 EXPLODED VIEW REAR GROUP 7 10...

Page 95: ...1 inch OD 10 136 0008 00 32 SOCKET STM7G Mounting Hardware For Each Pot not included 213 0044 00 2 SCREW thread cutting 5 32 x 3 11 inch PHS phillips 11 348 0003 00 3 GROMMET 5 16 inch 12 348 0002 00...

Page 96: ...rdware For Each not included 213 0045 00 1 SCREW self tapping 4 40 x 5 11 inch PHS phillips 31 Mounting Hardware For Each 8 Watt Resistor 212 0037 00 1 SCREW 8 32 x 13 4 inch Fil HS 21 0 0601 00 2 EYE...

Page 97: ...elay line Mounting Hardware For Each not included 211 0510 00 3 SCREW 6 32 x 3 1 inch BHS 210 0202 00 2 LUG solder SE6 21 02 4 00 1 LUG solder DE6 45 441 0236 00 1 OIASSIS horizontal amplifier and hig...

Page 98: ...igh voltage left Mounting Hardware not included 211 0541 00 2 SCREW 6 32 x 1 4 inch FHS phillips 213 0054 00 1 SCREW thread cutting 6 32 x 5 16 inch PHS phillips 58 406 0465 00 1 BRACKET pot Mounting...

Page 99: ...SEMBLY fan motor assembly includes 147 0001 00 1 MOTOR 1500 RPM 115 V Mounting Hardware not included 355 0044 00 2 STUD 10 32 x 27 16 inches 210 0410 00 4 NUT hex 10 32 x 5 11 inch 210 0010 00 6 LOCKW...

Page 100: ...read forming 6 32 X 3 inch rns phillips 83 129 0036 00 7000 10069 2 POST binding black 129 0063 00 10870 2 POST binding charcoal Mounting Hardware For Each not included 21 0 5 00 7000 7779 1 NUT hex 1...

Page 101: ...001 0 00 7000 7279X 1 LOCKWASHER internal 10 210 0445 00 7000 7279 2 NUT hex 10 32 x inch 220 041 0 00 7280 1 NUT keps 10 32 x inch 90 386 0427 00 2 PLATE ground 91 Mounting Hardware For Each Coil 21...

Page 102: ...ist Type 555 CABLE HARNESS AND CERAMIC STRIP DETAIL HIGH VOLTAGE LEFT HORIZONTAL AMPLIFIER CHASSIS RIGHT HORIZONTAL AMPLIFIER CHASSIS DELAY CHASSIS VERTICAL AMPLIFIER CHASSIS EXTERNAL AMPLIFIER CHASSI...

Page 103: ...c 7 1 inch x 5 notches Includes 355 0046 00 2 STUD nylon Mounting Hardware not included 361 0008 00 2 SPACER nylon 188 inch 5 124 0090 00 18 STRIP ceramic 3 4 inch x 9 notches Each Includes 355 0046 0...

Page 104: ...notch Each Includes 355 0046 00 1 STUD nylon Mounting Hardware For Each not included 361 0008 00 1 SPACER nylon 188 inch 12 179 0558 00 1 CABLE HARNESS right horizontal amplifier 13 179 0310 00 1 CABL...

Page 105: ...Parts List Type 555 EXPLODED VIEW POWER SUPPLY 7 21...

Page 106: ...switch 210 0414 00 1 NUT hex 1 2 32 x 9 16 inch 7 122 0067 00 2 ANGLE frame bottom Mounting Hardware For Each not included 212 0039 00 4 SCREW 8 32 x3fa inch THS phillips 21 0 0458 00 4 NUT keps 8 32...

Page 107: ...8 32 x inch THS phillips 17 381 0073 00 2 BAR retaining 18 Mounting Hardware For Fixed Coil 21 0 0564 00 4 NUT hex 10 32 x inch 21 0 001 0 00 4 LOCKWASHER internal 10 19 200 0258 00 2 COVER capacitor...

Page 108: ...inch PHS with lockwasher 210 0006 00 2 LOCKWASHER internal 6 210 0407 00 2 NUT hex 6 32 x 1 4 inch 30 386 0254 00 4 PLATE fiber large capacitor Mounting Hardware For Each not included 211 0543 00 2 SC...

Page 109: ...551 00 7000 11899X 2 NUT hex 4 wX y_ inch 211 0132 00 X11900 2 SCREW serns 4 w x 1j2 inch PHS 211 001 00 7000 11899 1 SCREW 4 w x 1j2 inch RHS 21J 0088 00 11900 1 SCREW thread forming 4 x 1 4 inch PHS...

Page 110: ...21 0 0480 00 1 NUT latch nylon 21 0 0847 00 1 WASHER nylon 164 1Dx 500 inch OD 213 0033 00 1 SCREW fastening 53 124 0089 00 3 STRIP cermaic 3 inch x 7 notches Each Includes 355 0046 00 2 STUD nylon M...

Page 111: ...00 7000 8999 1 FILTER light 378 0545 00 9000 10506 1 FILTER light smoke gray installed 378 0567 00 10507 1 FILTER light smoke gray installed 6 387 918 00 X9000 1 PLATE implosion shield 7 103 0033 00...

Page 112: ...Parts List Type 21A EXPLODED VIEW 7 28...

Page 113: ...13 00 2 NUT hex 3 a 32 x 1f2 inch 21 8 i 2 WASHER 390 ID X 16 inch OD 210 0012 00 1 LOCKWASHER internal 3 1 x 1f2 inch 9 366 4 4 00 7000 10999 1 KNOB SOURCE small blade 366 0113 00 11000 1 KNOB SOURCE...

Page 114: ...ing 5 32 x 3 16 inch PHS phillips 20 136 0161 00 7000 8879 3 SOCKET 3 pin transistor 136 0181 00 8880 10999X 3 SOCKET 3 pin transistor Mounting Hardware for Each not included 213 0113 00 7000 8879 2 S...

Page 115: ...lon 188 inch 36 179 0810 00 7000 10999 1 CABLE harness chassis 179 0810 01 11000 1 CABLE harness chassis 37 124 0146 00 7000 10999X 2 STRIP ceramic 7 11 inch x 16 notches Mounting Hardware For Each no...

Page 116: ...Parts List Type 21A SWITCHES G nME CM l C COUPliNG 7 32 0 0 SWEEP RJNCJION 0 SOUICE SLOP...

Page 117: ...are nat included 210 0413 00 1 NUT hex 3 1 32 x lf2 inch 21 0 0840 00 1 WASHER 390 ID x 9 16 inch OD 21 0 0012 00 1 LOCKWASHER internal 3 1 x 1j inch 8 262 0574 00 7000 10999 1 SWITCH SWEEP FUNOION wi...

Page 118: ...Parts Ust Type 22A EXPLODED VIEW 7 34...

Page 119: ...HSS Mounting Hardware For Pols 8 210 0413 00 2 2 1 NUT hex 3f 32 x 2 inch WASHER 390 ID x 6 inch D LOCKWASHER internal 3 a x 2 mch 210 0840 00 210 0012 00 9 366 4 4 00 366 0113 00 213 0004 00 10 366...

Page 120: ...cutting 5 32 x 3 16 inch PHS phillips 20 136 0161 7000 8889 3 SOCKET 3 pin transistor 136 0181 00 8890 10999x 3 SOCKET 3 pin transistor Mounting Hardware For Each not included 213 0113 7000 8889 2 SCR...

Page 121: ...ncluded 361 0008 00 2 SPACER nylon 188 inch 36 179 0813 00 7000 10999 1 CABLE harness chassis 179 0813 01 11000 1 CABLE harness chassis 37 124 0146 00 7000 10999X 2 STRIP ceramic 1f16 inch x 16 notche...

Page 122: ...Parts list Type 22A SWITCHES 0 SWEEP FUNCTION CD TIME CM j SOURCE 0 RESET COUPLING SLOPE 7 38...

Page 123: ...e not included 210 0413 00 1 NUT hex lfa 32 x 1f inch 21 0 0840 00 1 WASHER 390 10 x 9 16 inch OD 21 0 0012 00 1 LOCKWASHER internal 3fa x lj2 irw h 8 262 0628 00 7000 10999 1 SWITCH SWEEP FUNCTION wi...

Page 124: ......

Page 125: ...andescent 44 Graticule tight Neon NE 23 Neon NE 2V Neon NE 23 Neon NE 2V Neon NE 23 Neon NE 2V Neon NE 23 Neon NE 2V Capaciton Tolerance 20 unless otherwise indicated Tolerance of all electrolytic cap...

Page 126: ...v C565 283 001 005 f Disc Type SOOv C584 281 513 27pf Cer SOOv C594 281 518 47pf Cer SOOv C597 283 001 005 f Disc Type SOOv C601 283 004 02 f Disc Type 150v C610 285 510 01 f MT 400v C618 285 510 01 f...

Page 127: ...08 285 502 001 p f MT 1000v C919 283 057 1 p f Disc Type 200v C920 2 11 01 p f Disc Type 2000v C921 2 11 01 p f Disc Type 2000v C927 283 011 01 p f Disc Type 2000v C928 2 11 01 p f Disc Type 2000v C93...

Page 128: ...v C1152 283 000 001 p f Disc Type 500v C1162 283 000 001 p f Disc Type 500v 0164 281 f0 7 3pf Tub Var C1166 281 524 150pf Cer 500v C1172 283 000 001 p f Disc Type 500v 0182 283 000 001 p f Disc Type 5...

Page 129: ...ar C1331 281 0037 00 7 3 p Tub Var C1332 281 0037 00 7 3 pf Tub Var C1333 281 0037 00 7 3 pf Tub Var C1334 281 0037 00 7 3 pf Tub Var C1335 281 0037 00 7 3 pf Tub Var C1336 281 0037 00 7 3 pf Tub Var...

Page 130: ...e 290 001 0 00 2 x20 p f EMC 450v C2005A B C Use 290 0062 00 10x20x40p f EMC 475v C2007 285 526 1 p f MT 400v C2013 283 001 005 p f Disc Type 500v C2029 283 000 001 p f Disc Type 500v C2031 283 001 00...

Page 131: ...83 001 005 p f Disc Type 5 y C2301 281 0037 00 7 3 pf Tub Var C2302 281 0037 00 7 3 pf Tub Var C2303 281 0037 00 7 3 pf Tub Var C2304 281 0037 00 7 3 pf Tub Var C2305 281 0037 00 7 3 pf Tub Var C2306...

Page 132: ...46 281 0037 00 J 3pf Tub Var C2347 281 0037 00 7 3 pf Tub Var C2348 281 0037 00 7 3 pf Tub Var C2349 281 0037 00 7 3 pf Tub Var C2350 281 0037 00 J 3pf Tub Var C2359 281 538 1 pf Cer 500v C2360 281 52...

Page 133: ...D762A B C D 152 0066 00 Silicon 1NJ194 11560 up Fuses F601 159 0J6 7 Amp JAG Slo Bio 117 v oper 50 60 cycle 159 027 4 Amp JAG Slo Bio 2J4 v oper 50 60 cycle F602 159 006 5 Amp JAG Slo Bio 117 v oper...

Page 134: ...r Core 276 506 l2064 108 157 8 4J Lh l2071 114 092 3 5 fLh Var Core 276 506 l2073 114 092 3 5 fLh Var Core 276 506 l2103 108 145 Grid line 6 Section l2104 108 139 Plate line 7 Section l2113 108 145 Gr...

Page 135: ...304 104 lOOk lw R355 310 094 400k lw Prec 1 R356 310 094 400k 1 w Prec 1 R357 302 223 22k 1 2 w R358 311 018 20 k Var NOR MAG REGIS R361 302 470 470 1 2w R364 310 506 6 25 k 7w ww 1 R366 302 470 470...

Page 136: ...0 470 lj w R443 304 104 lOOk lw R450 309 091 120 k lj w Prec 1 R451 311 125 50k 2w Var SWP CAL R452 302 470 470 lj w R453 304 104 100 k 1w R455 310 094 400k 1w Prec 1 R456 310 094 400k 1w Prec 1 R457...

Page 137: ...302 474 470k lflw R535 302 102 1 k w R536 306 332 3 3 k 2w R538 302 185 1 8 meg lflw R539 302 105 1 meg w R550 302 105 1 meg lflw R551 316 101 lOOn w R555 302 473 47k lflw R556 302 123 12 k lflw R561...

Page 138: ...63S 304 183 18 k 1w R636 302 123 12 k w R637 302 224 220 k w R638 302 683 68 k w R639 302 1S4 1SO k w R640 306 100 10n 2w R641 306 100 10n 2w R642 304 1S4 1SO k lw R643 302 102 1k 12 w R646 308 037 1k...

Page 139: ...302 105 1 meg 1 2 w R728 302 564 560 k w R729 302 473 47k w R730 306 180 180 2w R731 306 180 180 2w R732 304 224 220 k lw R733 306 180 180 2w R734 302 102 1k w R735 302 102 1k 1 2 w R736 308 037 1k 25...

Page 140: ...R825 302 475 4 7 meg 1f2 w R826 311 041 1 meg Var INTENSITY R827 302 273 27k w R828 302 105 1 meg 1 2 w R844 302 103 10 k w R847 302 273 27 k w R848 302 105 1 meg 1 2 w R850 302 824 820k lf2w R852 311...

Page 141: ...meg 1 2w R919 302 185 1 8 meg 12w R920 316 473 Qk lf w R924 302 475 47 meg 12w R925 302 475 47 meg 12w R926 311 41 1meg Var INTENSITY R927 302 333 33k 1 2 w R928 302 105 1meg 12w R935 316 105 1 meg 1...

Page 142: ...0 33n Y2w R1052 302 474 470k lflw R1054 308 104 167n 5w ww 5 R1055 308 066 4 5k 5w ww 5 R1062 302 474 470k lflw R1071 l R1073 312 587 600n 5w checked matched lf2 of each other R1075 316 221 220n lf4w...

Page 143: ...2 101 lOOn 12 w Rl223 306 472 4Jk 2w Rl224 308 027 30k lOw ww 5 Rl227 302 394 390k 12 w Rl228 316 105 lmeg 1 4 w Rl301 302 102 1 k 1 2w Rl302 302 102 1 k 12 w Rl303 302 102 1 k 1 2w Rl304 302 102 1 k...

Page 144: ...77 316 470 470 Y4w R2078 316 151 1500 lf4 w R2080 302 124 120k 1f2w R2081 302 334 330k 1f2w R2083 302 394 390k 1f2w R2084 302 684 680k lf2 w R2085 316 105 1 meg 1 4 w R2090 316 682 6 8k nominal value...

Page 145: ...7 01 120 350 Use 120 0122 01 120 123 120 124 Resistors Cont dJ Desaiption 470k Y2w 470k Y2w 4 5k 5w ww 3600 Y2w 12k 8w ww 470k Y2w 3600 Y2w 1k 5w ww 1000 Y2w 4 7k 2w 30k lOw ww 390k Y2w 1meg Y4w 1k YJ...

Page 146: ...J8 ECC88 V585 154 187 6DJ8 ECC88 VfJJ9 154 052 5651 V624 154 043 12AX7 V634 154 022 6AU6 V647 154 056 6000 V664 154 022 6AU6 V617 154 056 6000 V684 154 043 12AX7 V694 154 022 6AU6 V707 154 056 6000 vn...

Page 147: ...DK6 Vll34 154 367 8136 6DK6 V1144 154 367 8136 6DK6 V1154 154 367 8136 6DK6 V1164 154 367 8136 6DK6 V1174 154 367 8136 6DK6 V1184 154 367 8136 6DK6 Vll94 154 367 8136 6DK6 V1204 154 367 8136 6DK6 V121...

Page 148: ...t No V2174 V2184 V2194 V2204 V2214 V2223 7 64 Tektronix Part No 154 367 154 367 154 367 154 367 154 367 154 187 8136 6DK6 8136 6DK6 8136 6DK6 8136 6DK6 8136 6DK6 6DJ8 ECC88 Electron Tubes Cont dJ Desc...

Page 149: ...500v C20 283 003 01 p f Disc Type 150v C30 283 0113 00 56 pf Disc Type 500v X11000 up C37 283 002 01 p f Disc Type 500v C38 283 076 27 pf Disc Type 500v C40 283 076 27 pf Disc Type 500v C48 283 003 0...

Page 150: ...e 500v 27 pf Cer 500v 220 pf Mica 500 v 00221 Lf MT 400v 0221 Lf MT 400v 1 if MT 400v 1 if MT 400v 39 pf Cer 500v 001 if Disc Type 500v 120 pf Cer 500v 02 p f Disc Type 600v 15 pf Cer 500v 0051 Lf Dis...

Page 151: ...lOOO up R25 311 0433 00 lOOn Var XllOOO up R26 311 328 1k Var TRIG LEVEL CENT R28 308 108 15 k 5w ww 5 7000 1CR99 R28 308 0262 00 15 k 5w ww 5 11000 up R30 308 212 10 k 3w ww 5 7000 lrR99 R30 308 0310...

Page 152: ...22 2 2 k 1f2w 7000 1 0999X R103 302 105 1 meg 1f2w R104 302 103 10 k w R105 302 103 10 k 1 2w R106 302 153 15 k 1 2w R107 302 825 8 2 meg 1f2w R108 316 470 470 v w R109 302 334 330k w R110 302 183 18...

Page 153: ...R160H 310 107 lOmeg lflw Prec 1 R160J 310 505 30meg 2w Prec 1 Rl60W 302 104 lOOk lflw R160X 302 103 10 k lf2 w R160Yt 311 108 20k Var ww VARIABLE R162 304 682 6 8k lw R163 304 123 12 k lw R164 306 223...

Page 154: ...57 075 V152 154 38 V161 154 40 V161 154 40 05 V173 154 187 V183 154 187 V193 154 187 47k 110k 470 470 4 7k Rotary Slide Slide Slide Slide Resistors Cont dJ Description 1f2 w 1f2 w 1f2 w w lw Switches...

Page 155: ...isc Type 150v C30 283 0113 00 56pF Disc Type 500v Xl1000 up C37 283 002 01 p f Disc Type 500v C38 283 076 27 pf Disc Type 500v C40 283 076 27 pf Disc Type 500v C48 283 003 01 J f Disc Type 150v C101 2...

Page 156: ...27pf Cer 500v 220pf Mica 500v 0022 p f MT 400v 022 p f MT 400v 1 p f MT 400v 1 p f MT 400v 39 pf Cer 500v 001 p f Disc Type 500v 120 pf Cer 500v 02 p f Disc Type 600v 15 pf Cer 500v 005 p f Disc Type...

Page 157: ...R25 311 0433 00 1000 Vor X11000 up R26 31l 328 1k Vor TRIG LEVEL CENT R28 308 108 15k 5w ww 5 7000 10999 R28 308 0262 00 15k 5w ww 5 11000 up R30 308 212 10k 3w ww 5 7000 10999 RJO 308 0310 00 12k 5w...

Page 158: ...99X R104 302 105 1 meg 1 w R105 302 394 390k 1 w R106 302 105 1 meg 1 w R107 302 470 47 lflw R108 302 103 10 k 1 w R109 302 224 220k 1 w R110 302 103 10 k v w R111 311 026 100 k Var STABILITY R112 302...

Page 159: ...Prec 1 R160G 310 107 10 meg 1w Prec 1 R160H 310 107 10 meg 1w Prec 1 R160J 310 505 30 meg 2w Prec 1 R160W 302 104 lOOk lj w R160X 302 103 10 k w R160Yt 311 108 20k Var ww VARIABLE R162 304 682 6 8k l...

Page 160: ...187 154 022 154 187 154 022 154 187 154 187 154 047 157 075 154 0038 00 154 040 154 0040 05 154 187 154 187 154 187 470 1000 68k 47k lOOk 470 470 4 7 k Rotary Slide Slide Slide Slide Resistors ContJ D...

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Page 190: ...RMS and VOLTAGE READINGS were obtained under the following conditions Waveforms Voltages Lower Beam 0 5 volt 1 kc None Vertical Input Calibrator Signal Plug In Deflection 0 05 volts em Factor Also see...

Page 191: ...I CZ06 00 I I I J 4701 J g D L2 0E 4 eAph PLATE LINE RE VE E TERMINATION NETWORI l 50V I L2071 I 3 5p I I I I I R2 OS4 I IE 7 I R z aTS L j 2 2 0 I le IC2 O 4 I 00 I I L R207a l I E oo L 2 073 I C2e...

Page 192: ...I I I I L L2355 C2368 C2370 C2372 C2374 Sf 11 sh ISf C2 1 CZ 317 C2 8 CZ 319 2 323 C2 J27 C232 j C23 30 C2 l32 CZ 333 7 3 7 3 7 3 7 3 7 3 7 3 7 3 7 3 7 7 3 C2369 C2371 C2373 C2 75 1 5 R2305 I S RZ306...

Page 193: ...SWU P UNaLANKINCio TO SW I I2 IF SW 04 12 IF o MUL I TRACE SYNC PUu E TO SW I z oIR SW4 2 oIR AWTOOTH TO SW0I32 2 R IR SW 2 2 R IR 150V aRIGHTE INGo PUL E TO PIN I V I SWE E P U BLANKINOo TO SW ol 2 l...

Page 194: ...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 manuals Hen...

Page 195: ......

Page 196: ...TYPE 555 CHANGE TO R826 R8 56 R926 R9 56 TENT SN 12120 ELECTRICAL PARTS LIST CORRECTION 3ll oo41 02 311 oo43 02 3ll oo41 02 3ll oo43 02 Mll 639 368 7 ll7 7 ll8...

Page 197: ......

Page 198: ...in series enables the trument to be operated with a nominal line voltage of 234 volts ac In iastruments SN9480 and above the Power Supply Unit power transformers T601 and T602 have two additional whdi...

Page 199: ...nomiDal line voltage If the primary wiring is changed reverse the tag so that the blank side may be rk d to indicate the nominal line voltage Jhenever an instrument is changed from 110 117 124 volt op...

Page 200: ...t D A i 1 t t 117Y t D A I c 1 4 t 124 y t D A 2 3 I I I i 2 3 I C I c I c 1 4 1 4 1 4 t 220Y f f 234Y f t 241Y t B Tran for er prl ry connactlan far vorl noMinal line voltage Fig 1 Pover Transformer...

Page 201: ...faa lead The correct fan co ectiou for 110 117 124 To1t operation are mowa in Fig 2 a L790 coJUlections for both 110 117 124 vo1t operatioa and 220 1 234 248 volt operatioJl are shown in Fig 3 Fuse da...

Page 202: ...ftPB 555 Dr Sll 11430 PARI S Lmr COHHBC tlOB CIWIJB TO B6l 7 l V ww 7 123...

Page 203: ...TYPE 555 CHANGE TO c48o 7 124 TENT SN 12110 PARTS LIST CORRECTION 290 0405 00 10 p F 150 v Ml3 457 268 The End...

Page 204: ...fiers in the Type 555 are de signed to accept Letter Series and J Series Plug In Units for a high degree of signal handling versatility CHARACTERISTIC SUMMARY VERTICALS 2 identical vertical deflection...

Page 205: ...oduce no over shoot or ringing but frequency response is down on additional 1 dB at 33 MHz SIGNAL DELAY permits observation of the leading edge of the waveform that triggers the sweep A 0 2 p s delay...

Page 206: ...Each beam has a linear display area of 4 by 10 em with at least 2 cm overlap For best results over the wide sweep range of the Type 555 a P2 phosphor is normally supplied 10 555 kV accelerating potent...

Page 207: ...l number below 7000 If you have timebases 21 A and 22A up to my knowledge everything works fine I do not have an 1A4 plugin but the manual for it mentiones operation in the 555 With the 1A1 its the sa...

Page 208: ...t was designed to be used in a 547 i own a 1a4 and use it in my 547 Reply IForward 25054 From Larry Christopher tektronix Date Wed Dec 13 2006 6 56 pm Subject Re 1A4 in a 555 scoper796 Offline Send Em...

Page 209: ...me research and found out some stuff about using multi channel plugins in a 551 The 551 DOES have alternate sync capability What it does not have is Chopped Transient Blanking You can use the 1A4 and...

Page 210: ...feed from the plugin the 551 may have been on its way out by then an f Nay It is interesting to find that some plugins don t work in all scopes One that comes to mind is the 532 S7 It has no decoupli...

Page 211: ...some coax cables to bring the plugin trigger signals up to each timebase compartment There was a mod kit 040 0328 01 to do this There is no way to modify 21 s and 22 s to provide plugin triggering si...

Page 212: ...in triggering This is covered prominently in the 1A4 and has probably led to confusion about this issue The 1A4 will work in these but the scope needs a simple mod first Case closed Larry Christopher...

Page 213: ...ake out and reform all the lytics What happens if I operate the unit with only one vertical or only one horizontal or one only each Don t want to switch on and fry everything in one session I can work...

Page 214: ...m aware that I will probably need to take out and reform all the lytics No reason to do this these do not give a problem What happens if I operate the unit with only one vertical or only one horizonta...

Page 215: ...t It must have a proper load on it and yes you will need all plugins in place to put a proper load on the power supply Both timebases and both verticals On old Tek scopes I never bother to reform the...

Page 216: ...ild extenders for either type of plugin for a couple of dollars per connector Most of what I have have been salvaged but are still perfectly useable In the Tektronix Service Center we had an extra lon...

Page 217: ...ly uses that big heavy saturable reactor to regulate the heater voltages It relies on a little tube that varies its conductivity according to the temperature of its filament and varies the control cur...

Page 218: ...fully it is actually the trailing edge or flat portion of the square wave that is DECREASING in amplitude over time as the filaments cool down You can verify this by simply plugging in the scope calib...

Page 219: ...6 Offline Send Email This is not for filtering The L manual says Low frequency peaking for the X10 amplifier is provided mainly by C6002A and C6002B in the plate circuits of V5942 and V6042 With their...

Page 220: ...vice Center and they have been assigned the Tektronix Part Number 067 0514 00 so some engineer at Tek must have thought it was important That was many years ago and maybe modern true reading rms voltm...

Page 221: ...gh tek the one i purchased through ebay was never modified by tek safety recall it replaces a tek 214 scope i had i like a scope that can measure frequency and voltage accurately on screen my 7d15 sta...

Page 222: ...555 Discussion 2 Reply IForward Page 10...

Page 223: ...ere I only have this scope to check that with Before I dig into it further thought I d ask you fellows here if you ve had any experience with this Been many years since I ve worked electronic problems...

Page 224: ...N dot at 12 o clock Turn the scope on and let it warm up for a couple of minutes Observe the four neon lamps on the right side of the UPPER BEAM control area The lower pair should be alternating with...

Page 225: ...ASE B x1 That s enough for the moment If all those tests are successful we ll get into the complicated stuff Leigh 73 de Leigh W3NLB http www AtwaterKent info Click Grebe Stuff for Synchrophase info R...

Page 226: ...articular beam Don t ever turn it up trying to find the beam Use the neon bulbs to show you where it is Leigh Re Tektronix 555 o scope problem PostPosted Jan Fri 22 2016 4 24am From the sound of thing...

Page 227: ...ough a resistor network which controls the bias on a 6CZS power tube The plate current of the 6CZS in turn controls a saturable reactor or magnetic amplifier which regulates mains voltage to the prima...

Page 228: ...tion I have seen a similar tube used in an AC voltage regulator used to power an old large electron microscope system These tubes are operated in the temperature limited region where their emission is...

Page 229: ...measured over a frequency band is directly proportional to the average current so by measuring the average current the noise output of the tube is known The noise output is varied by adjusting the fi...

Page 230: ...V Inability of one of these controls to turn off its associated bean1 n1ay be caused VJ by failure of the type 5642 vacuutn tube 0 b in the INTENSITY control s circuit Schetnatic designation of this...

Page 231: ...6 00 P2 154 0476 01 P7 154 0476 02 P11 154 0476 03 P31 154 0775 00 P31 154 0775 03 P7 154 0775 04 P11 154 0776 00 P31 154 0776 03 P7 154 0776 04 P11 Tek and Tektronix are trademarks of Tektronix Inc N...

Page 232: ...aced by P7 pg JEDEC Registration Withdrawn P10 Dark Trace Storage Not Luminescent P11 Purplish Blue 25 100 P12 Orange 18 3 1 Where different than Fluorescence 2 Taken with Spectra Brightness Spot Mete...

Page 233: ...9 M 214 5MDT841 152 0154 00 RM546 RM547 R544 R556 TU5 151 152 21A 22A 544 546 547 556 7870 7871 10 90 D0 17 5TD916 152 0098 00 RM565 556 565 661 10 25 D0 17 5TD927 152 0386 00 05261 475 R 7850 7851 1...

Page 234: ...0 152 0182 00 I Jj 152 0189 00 152 0203 00 152 0214 00 152 0225 00 152 0254 00 152 0254 01 152 0266 00 152 0275 01 152 0277 00 152 0310 00 152 0329 00 152 0330 00 152 0334 00 152 0334 01 152 0365 00...

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Tektronix 555/21A, Instruction Manual

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