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Tektronix 422, Instruction Manual

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Tektronix 422 Instruction Manual Download Page 39

SECTION 3

 

CIRCUIT DESCRIPTION

Type 422 AC-DC

Change  information,  if any, affecting this section w ill  be found  at the  rear o f this  manual.

Introduction

This  section  of  the  manual  contains  a  description  o f the 

circuitry  used  in  the  Type  422  Oscilloscope  w ith  AC-DC 

Power  Supply.  The  description  begins  w ith  a  discussion  of 

the  instrument  using  the  basic  block diagram shown  in  Fig.

3-1.  Then  each  circuit  is  described  in  detail  using a  detailed 

block  diagram  to  show  the  interconnections  between  the 

stages  in  each  major  circuit  and  the  relationship  of  the 

front-panel  controls to the  individual  stages.

A  complete  block  diagram  is  located  in  the  Diagrams 

section  at  the  back  o f  this  manual.  This  block  diagram 
shows  the  overall  relationship  between  all  o f  the  circuits. 
Complete  schematics  of  each  circuit  are  also  given  in  the 

Diagrams  section.  Refer  to  these  diagrams  throughout  the 

following  circuit  description  fo r  electrical  values  and  rela­
tionship.

BLOCK  D IA G R A M

General

The  following  discussion  is  provided  to  aid  in  under­

standing  the  overall  concept  of  the  Type  422  before  the 

individual  circuits  are  discussed  in  detail.  A  basic  block 

diagram  of  the  Type  422  is  shown  in  Fig.  3-1.  Only  the 
basic  interconnections  between  the  individual  blocks  are 
shown  on  this  diagram.  Each  block  represents  a  major  cir­
cuit w ithin  the  instrument.  The  number  in  each  block  refers 

to  the  complete  circuit  diagram  iocated  at  the  back  of  the 

manual.

Signals  to   be  displayed  on  the  CRT  are  applied  to  the 

INPUT  1  and/or  the  INPUT  2  connector.  The  input signals 

are  amplified  by  the  Channel  1  Input  A m plifier and/or the 
Channel  2  Input  A m plifier  circuit.  Each  Input  Am plifier 
circuit  includes  separate  vertical  deflection  factor,  input 
coupling,  position,  gain,  variable  attenuation  and  balance 
controls.  A  trigger-pickoff  stage  in  the  Channel  1  Input 

A m plifier  circuit  supplies  a  sample  of  the  Channel  1  input 
signal  to  the  Sweep  Trigger  circuit  to  provide  triggering 
from   the  Channel  1  signal  only.  The  Channel  2  Input  Cir­
cuit  contains  a  X10  gain  stage  to  allow  the  Channel  2 
deflection  factors  to  be  increased  10  times  and  an  invert 
feature  to  invert  the  Channel  2  signal  as  displayed  on  the 
CRT.  The  output  of  both  Input  A m plifier  circuits  is  con­
nected  to  the  Vertical  Switching  and  O utput A m plifier cir­

cuit.  This  circuit  selects  the  channel(s)  to  be  displayed  on 
the  CRT  and  provides  the  final  amplification  fo r  the  verti­

cal  signal  before  it  is applied  to the vertical  deflection  plates

of  the  CRT.  A  delay  line  is  included  in  the Vertical  Switch­

ing  and  O utput  A m plifier circuit to  delay  the vertical  signal 

slightly  so  the  horizontal  circuits  have enough  tim e to  start 

the  sweep  before  the  input  signal  arrives  at  the  vertical 
deflection  plates.  An  output  signal  from  this  circuit  is con­

nected  to  the  CRT  Circuit  to  blank  out  the  between- 

channel  switching  transients  when  in  the  chopped  mode o f 

operation.  A   trigger-pickoff network  in  this circuit  provides 
a  sample  o f  the  displayed  signal(s)  to  the  Sweep  Trigger 
circuit.

The  Sweep  Trigger  circuit  produces  an  o utput  pulse 

which  initiates  the  sweep  signal  produced  by  the  Sweep 

Generator  circuit.  The  input  signal  to  the  Sweep  Trigger 

circuit  can  be  selected  from   either  the  Channel  1  Input 

A m plifier  circuit,  the  Vertical  Switching  and  O utput 

A m plifier  circuit,  or  an  external  signal  connected  to   the 

HORIZ  IN  OR  TRIG  IN  connector.  This  circu it  contains 

level,  slope,  coupling,  source  and  mode  controls  to   select 

the  desired  triggering.  The  Sweep  Generator  circuit 

produces  a  linear  sawtooth  output  signal  when  initiated  by 

the  Sweep  Trigger  circuit.  The  slope  (sweep  rate)  o f  the 

sawtooth  produced  by  the  Sweep  Generator  circuit  is 

controlled  by  the  T IM E /D IV   switch.  The Sweep  Generator 

circuit  also  produces  an  unblanking  gate  signal  to   unblank 

the  CRT  so  the  display  can  be  presented.  This gate signal  is 

coincident  w ith  the  sawtooth  produced  by  the  Sweep 

Generator.  An  external  signal  can  be  connected  to  this 

circuit  through  the  EXT  BLANKING   connector  to   blank 

portions  of  the  CRT  display.  A  gate  signal  which  is  also 

coincident  w ith  the sawtooth  is available at the GATE  OUT 

connector.  The  Sweep  Generator  circuit  also  provides  an 
alternate  trace  sync  pulse  which  is  connected  to  the 

Vertical  Switching  and  O utput A m plifier circuit.  This  pulse 

switches  the  display  between  channels  at  the  end  of  each 
sweep when  in  the alternate  mode  of operation.

The  sawtooth  output  signal  from  the  Sweep  Generator 

circuit  is  connected  to  the  Horizontal  A m p lifie r  circuit  in 
all  positions  o f  the  T IM E /D IV   switch  except  the  EXT 

HORIZ  position.  In  the  EXT  HORIZ  position,  external 

signals  connected  to  the  HORIZ  IN  OR  TRIG  IN  connector 
can  be  applied  to  the  Horizontal  A m plifier  circuit  to  pro­
duce  horizontal  deflection  on  the  CRT.  The  Horizontal 
A m plifier  circuit  amplifies the applied  sawtooth  or external 
horizontal  deflection  signal  and  produces  a  push-pull  out­
put  signal  to  drive  the  horizontal  deflection  plates  of  the

3-1

Summary of Contents for 422

Page 1: ...I U A L j Serial Number 3 L TYPE 422 OSCILLOSCOPE W ith AC DC Pow er Supply SR6 2 0 0 0 0 end up Tektronix Inc S W Millikan Way P O Box 500 Beaverton Oregon 97005 Phone 644 0161 Cables Tektronix 070 0895 00 1268 ...

Page 2: ...the field therefore all requests for repairs and re placement parts should be directed to the Tektronix Field Office or representative in your area This procedure will assure you the fastest possible service Please include the instrument Type and Serial or Model Number with all requests for parts or service Specifications and price change privi leges reserved Copyright 1968 by Tektronix Inc Beaver...

Page 3: ...ation Section 6 Electrical Parts List Mechanical Parts List Information Section 7 Mechanical Parts List Section 8 Diagrams Mechanical Parts List Illustrations Accessories Abbreviations and symbols used in this manual are based on or taken directly from IEEE Standard 260 Standard Symbols for Units MIL STD 12B and other standards of the electronics industry Change information if any is located at th...

Page 4: ...R TV 422 AC OC P o p p Type 422 AC DC ...

Page 5: ...ance is not affected by variations in internal battery charge level applied DC voltage or AC line voltage and frequency Maximum total power consumption is 26 watts for external DC operation and 30 watts for AC operation The instru ment will operate about four hours from the internal bat teries when fully charged This instrument will meet the electrical characteristics listed in Table 1 1 following...

Page 6: ...odes selected by front panel Input Coupling switch AC capacitive coupled or DC direct coupled Characteristic Performance Maximum Input Volt age AC and DC input coupling 300 volts DC peak AC Peak to peak AC less than 300 volts one kilohertz or less Input RC Characteris tics Resistance One Megohm 2 Capacitance 33 picofarads 1 pF Time constant 33 microseconds 1 1nput Current at 20 C to 30 C Negligibl...

Page 7: ...ga hertz increasing to one division at 15 megahertz AC LF REJ 0 2 division of deflection mini mum 50 kilohertz to five mega hertz increasing to one division at 15 megahertz Will not trigger on two division or less sine wave at 120 hertz or less Characteristic Performance DC 0 2 division of deflection mini mum DC to five megahertz in creasing to one division at 15 megahertz External AC 125 m illivo...

Page 8: ...nks trace Polarity of Operation Positive going signal required Input Resistance 250 ohms 10 Characteristic Performance SIGNAL OUTPUTS Gate Waveshape Rectangular Polarity Negative going with baseline near zero volts Output voltage 0 5 volt or greater Duration Same duration as sweep Output Resistance 620 ohms 10 CATHODE RAY TUBE CRT Graticule Type Internal with variable edge light ing Area Eight div...

Page 9: ...ation Allow 24 hour post test drying period at 25 C 5 C and 30 to 80 relative humidity Lim it maxi mum temperature to 60 C if tested with batteries Vibration Operating and non operating 15 minutes along each of the three major axes at a total dis placement of 0 025 inch peak to peak 3 9 g at 55 c s with fre quency varied from 10 55 10 in one minute cycles Hold at any resonant point or if none at 5...

Page 10: ...pth including front cover 18 9 16 inches 47 2 centi meters Characteristic Performance Depth handle posi tioned for carrying 20 5 8 inches 52 4 centi meters Weight Without battery pack Without front cover 20 1 2 pounds 9 3 kilograms With front cover and standard accessories 23 pounds 10 5 kilograms With battery pack Without front cover 27 1 2 pounds 12 5 kilograms With front cover and standard acce...

Page 11: ...etely portable The following information provides removal in structions battery pack installation and information neces sary for operation in each power mode as well as informa tion on rechargeable nickel cadmium batteries Removing the Power Supply The power supply can be removed from the indicator for maintenance calibration remote operation installation of batteries or to gain access to the inte...

Page 12: ...ects the other power modes see Table 2 1 for description of the Power Mode switch In the OPERATE 115V AC position of the Power Mode switch this instrument provides stable operation over a line voltage range of 95 to 137 volts without batteries When in the OPERATE 230V AC position stable operation is provided with line voltage variations between 190 and 274 volts Stable operation is also provided f...

Page 13: ...ery box from the power supply 6 Remove the four short bolts located in the battery pack securing holes see Fig 2 4B NOTE The bolts removed in step 6 allow the Type 422 with AC DC Power Supply to meet the EMI specifications given in Section 1 when the battery pack is not instal led These bolts are replaced with the screws to be removed from the battery pack in step 8 If the in strument is operated ...

Page 14: ...l of the AC DC Power Supply B Location of securing screws on rear of power supply D Installing the battery box on the battery pack E Installing battery assembly on the AC DC Power Supply F Installing the AC DC Power Supply on the indicator 2 4 Fig 24 Installing the battery pack in the AC DC Power Supply ...

Page 15: ...E 115V AC position 30 milli ampere trickle charge applied to batteries WARNING When this instrument is operated from the internal batteries the chassis is floating with respect to earth ground Connect the instrument to earth with a jumper lead from the front panel ground post Opera tion without this ground lead is not recommended due to the potential shock hazard produced if the chassis becomes el...

Page 16: ...ng the bat tery pack for long periods of time fully recharge the bat tery pack about every three months Although the battery pack is fully charged when shipped from Tektronix Inc recharge the battery pack completely before operating the instrument Charge retention characteristics of nickel cadmium bat teries vary with the storage temperature and humidity The battery pack may be stored at ambient t...

Page 17: ... stand for the instrument To position the handle press in at both pivot points see Fig 2 6 and turn the handle to the desired position Several positions are provided for convenient carrying or viewing The instru ment can also be set on the rear panel feet either for opera tion or storage CONTROLS AND CONNECTORS General A brief description of the function and operation of the controls and connector...

Page 18: ...put Coupling Selects method of coupling input sig AC GND DC nal to input amplifier AC DC component of input signal is CH 1 The signal applied to the IN PUT 1 connector is displayed blocked Low frequency 3 dB CHOPPED Dual trace display of point is about two hertz signals on both channels Display switched at a repetition rate of GND Input circuit is grounded does not ground applied signal about 150 ...

Page 19: ...rigger signal at point selected by the LEVEL con trol when the trigger signal repetit ion rate is above about 20 hertz or above lower lim it of frequency range selected by TRIGGERING Coupling switch Triggered sweep can be obtained only throughout amplitude range of applied trigger signal When the LEVEL control is outside the amplitude range when the trigger repetition rate is below the lower frequ...

Page 20: ...illiampere rate when POWER switch is on Indicator does not operate in this switch position Blanking Light Indicates that POWER switch is on and power is available For the OPERATE INT BATT position of the Power Mode switch the POWER light blinks to indicate that the batteries are discharged too far for continued operation Switch Push pull switch to control power to the instrument FIRST TIME OPERATI...

Page 21: ...heck the Channel 2 step attenuator balance as de scribed in step 12 8 Rotate the SCALE ILLUM control throughout its range and notice that the graticule lines are illuminated as the control is turned clockwise most obvious with mesh or tinted filter installed Set control so graticule Sines are illuminated as desired Vertical Controls 9 Set the Channel 1 VOLTS DIV switch to the CALI BRATE 4 DIVISION...

Page 22: ...orizontal POSITION control so the dis play starts at about the center of the graticule Now turn the horizontal POSITION control in the opposite direction Notice that for about five divisions the trace moves slowly to the left and the control turns easily Then the drag on the control increases slightly and the trace begins to move much faster to the left This control provides a combination of cours...

Page 23: ...r AC LF REJ DC HORIZ ATTEN OR SLOPE LEVEL AUTO PUSH v o lt s d iv u n c a l r i VOLTS DIV 20 01 L STEP ATT BAL ALG g ADD POSITION G AIN INVERT PULL r NORM PULL HORIZ IN OR TRIG IN INPUT 1 CALIBRATE 4 DIVISIONS STEP ATT BAL X10 4 DIVISIONS V PULL 20 T 0 1 L CALIBRATE f X 1 0 GAIN AC INPUT 2 POWER GATE OUT EXT BLANKING 33 pF AC GND DC U 6 TEKTRONIX INC 2 VOLT 1 U PROBE CALIBRATOR 1 MSI 33 pF AC GND ...

Page 24: ... method of establishing optimum setting of the FOCUS and ASTIG MATISM controls 1 Set the VOLTS DIV switch to CALIBRATE 4 DIVI SIONS 2 Set the TIME DIV switch to 5 ms and the LEVEL control for a stable display 3 With the FOCUS AND ASTIGMATISM controls set to midrange adjust the INTENSITY control so the rising portion of the display can just be seen 4 Set the ASTIGMATISM control so the vertical and ...

Page 25: ... the VOLTS DIV switch to 05 and apply an accurate square wave to the probe tips Also to provide the best measurement accuracy calibrate the vertical gain of the Type 422 at the temperature at which the measurement is to be made Step Attenuator Balance Adjustment To check the step attenuator balance of either channel set the Input Coupling switch to GND and the TRIGGER ING modeswitch to AUTO Change...

Page 26: ...out 20 hertz two hertz with a 10X probe as they will be attenuated in the AC position In the AC Coupling position the DC component of the signal is blocked by a capacitor in the input circuit The low frequency response in the AC position is about two hertz 3 dB point Therefore some low frequency atten uation can be expected near this frequency limit Attenua tion in the form of waveform tilt will a...

Page 27: ...y if the amplitude of the signal applied to either channel is known Precautions The following general precautions should be observed when using the ALG ADD mode 1 Do not exceed the input voltage rating of the Type 422 2 Do not apply signals that exceed an equivalent of about eight times the VOLTS DIV switch setting For ex ample with a VOLTS DIV switch setting of 5 the voltage applied to that chann...

Page 28: ...Operating Instructions Type 422 AC DC Waveforms obtained with the TRIGGERING LEVEL control set in the region 2 18 Fig 2 11 Effect of the TRIGGERING LEVEL control and SLOPE switch on the CRT display ...

Page 29: ...portant to provide a display which starts on the desired slope of the input signal Trigger Level The TRIGGERING LEVEL control determines the volt age level on the triggering waveform at which the sweep is triggered When the LEVEL control is set in the region the trigger circuit responds at a more positive point on the trigger signal In the region the trigger circuit responds at a more negative poi...

Page 30: ...r five divisions for magnified operation and the trace can be positioned precisely Then after the fine range is exceeded the coarse adjustment comes into effect to provide rapid positioning of the trace To use this con trol effectively for precise positioning first turn the control to move the trace slightly beyond the desired position coarse range Then reverse the direction of rotation to use the...

Page 31: ...1959 John F Rider Obtaining and Interpreting Test Scope Traces John F Rider Publisher Inc New York 1959 Rufus P Turner Practical Oscilloscope Handbook Volumes 1 and 2 John F Rider Publisher Inc New York 1964 Peak to Peak Voltage Measurements AC To make peak to peak voltage measurements use the following procedure NOTE For low frequency signals below about 20 hertz use the DC position to prevent at...

Page 32: ... time by switching to the GND position 8 Set the TRIGGERING control to obtain a stable dis play Set the TIME DIV switch to a setting that displays several cycles of the signal 9 Measure the distance in divisions between the refer ence line and the point on the waveform at which the DC level is to be measured For example in Fig 2 15 the meas urement is made between the reference line and point A Fi...

Page 33: ...ignal seconds by the product of the horizontal deflection estab lished in step 2 divisions and the setting of the TIME DIV switch This is the horizontal conversion factor Horizontal Conversion Factor reference signal repetition rate seconds _____________ horizontal deflection divisions X TIME DIV switch setting 6 Measure the vertical deflection in divisions and calculate the amplitude of the unkno...

Page 34: ...ess than eight divisions between the time measurement points see Fig 2 16 See Horizontal Sweep Rate in this section concerning nonlinearity of first and last divisions of display Fig 2 16 Measuring time duration between points on a waveform 6 Adjust the vertical POSITION control to move the points between which the time measurement is made to the center horizontal line 7 Adjust the horizontal POSI...

Page 35: ...ime duration formula to find risetime Time Duration Risetime horizontal distance divisions TIME DIV setting magnification Substituting the given values Risetime 6 X 1 jus 10 The risetime if 0 6 microseconds Time Difference Measurements The calibrated sweep rate and dual trace features of the Type 422 allow measurement of time difference between two separate events To measure time difference use th...

Page 36: ...the Channel 1 waveform and the Channel 2 waveform see Fig 2 18 12 Multiply the measured distance by the setting of the TIME DIV switch If sweep magnification is used divide this answer by 10 EXAMPLE Assume that the TIME DIV switch is set to 50 jus the magnifier is on and the horizontal distance between waveforms is 4 5 divisions see Fig 2 18 Using the formula Time Delay TIME DIV setting horizontal...

Page 37: ...en values Phase Difference 0 6 X 45 Common Mode Rejection The ALG ADD feature of the Type 422 can be used to display signals which contain undesirable components These undesirable components can be eliminated through common mode rejection The precautions given under Alge braic Addition should be observed 1 Connect the signal containing both the desired and undesired information to the INPUT 1 conn...

Page 38: ...nnel 1 signal The undesired signal is cancelled out EXAMPLE An example of this mode of operation is shown in Fig 2 21 The signal applied to Channel 1 contains unwanted line frequency components Fig 2 21 A A corresponding line frequency signal is connected to Channel 2 Fig 2 21B Fig 2 21C shows the desired portion of the signal as displayed when common mode rejection is used 5 Set the TRIGGERING So...

Page 39: ...inal amplification for the verti cal signal before it is applied to the vertical deflection plates of the CRT A delay line is included in the Vertical Switch ing and Output Amplifier circuit to delay the vertical signal slightly so the horizontal circuits have enough time to start the sweep before the input signal arrives at the vertical deflection plates An output signal from this circuit is con ...

Page 40: ...Fig 3 1 Basic block diagram of Type 422 with AC DC Power Supply W I 1SJ a Circuit Description Type 422 AC DC ...

Page 41: ... diagrams are used throughout the following discussion The circuit diagrams from which the detailed block diagrams are derived are shown in the Dia grams section CHANNEL 1 INPUT AMPLIFIER General Input signals for vertical deflection on the CRT can be connected to the INPUT 1 connector The Channel 1 Input Amplifier circuit provides control of vertical deflection factor input coupling vertical posi...

Page 42: ...picofarads FET field effect transistor Q14A is connected as a source follower to provide a high input impedance for the applied signal with a low impedance drive to the following stage Diodes D14 and D15 protect the input circuit by clamping the gate of Q14A if the signal at the gate exceeds either 12 5 volts or 12 5 volts FET Q14B is a constant current source for Q14A and also provides temperatur...

Page 43: ...in of the Channel 1 Input Amplifier This control is set to provide calibrated vertical deflection factors Channel 1 VARI ABLE control R90 provides variable gain to provide con tinuously variable deflection factors between the calibrated settings of the Channel 1 VOLTS DIV switch The network C78 D78 R77 R78 R79 connected to the base of Q94 pro vides the same DC level and circuit response in the Cha...

Page 44: ...t Amplifier circuit Channel 2 signal from Channel 2 Input Amplifier circuit Alternate trace sync pulse from _ Sweep Generator circuit CH 1 2 Trigger Pickoff Network A l s ernate Trace Sw Switching itching Multivibrator V Amplifier Q265 Q275 Q 2 6 4 Composite trigger signal to Sweep Trigger circuit Delay Line 1 5 0 ns Chopped blanking to CRT Circuit Vertical deflection signal to vertical deflection...

Page 45: ...age Q264 through R260 Q264 is normally o ff and the current through R260 passes to the on Switching Multivibrator transistor through either D264 or D274 For example if Q265 is conducting current is supplied to Q265 through D264 The current flow through collector resistor R265 produces a more positive voltage at the collector of Q265 which is connected to D202 D203 in the Channel 1 Diode Gate This ...

Page 46: ...Circuit Description Type 422 AC DC Fig 3 5 Effect of Diode Gate on signal path simplified Vertical Switching and Output Amplifier diagram Conditions shown for CH 1 position of Mode switch 3 8 ...

Page 47: ...put signal from the Diode Gate stage is connected to Delay Line Driver stage Q224 and Q234 Q224 and Q234 are connected as feedback amplifiers with R221 R224 and R231 R234 providing feedback from the collector to the 4Millman and Taub pp 438 451 base T he d e la y lin e com pensation netw ork C 227 C 228 C 237 R 227 R 228 R 237 provides high frequency compensation for the Delay Line C237 and R237 a...

Page 48: ... the trigger signal is not affected by changes in vertical position of the display External trigger signals applied to the TRIG IN connec tor can be used to trigger the sweep in the EXT position of the TRIGGERING Source switch Input resistance at DC is about 100 kilohms paralleled by about 35 picofarads Vari able capacitor C302 provides high frequency compensation for the external triggering circu...

Page 49: ...se of Q323 The output signal from the Trigger Amplifier stage is connected to the Trigger TD stage through the SLOPE switch Trigger TD The Trigger TD stage shapes the output signal from the Trigger Amplifier stage to provide a trigger pulse with a fast leading edge For positive slope triggering the Trigger Amp lifier stage operates as a current shunt for tunnel diode5 D375 see Fig 3 7A The cathode...

Page 50: ...figuration of the Auto Multivibrator stage is a monostable multivibrator6 comprised of transistors Q345 and Q347 This stage produces the control gate to the Sweep Generator circuit for auto trigger operation Under quiescent conditions no trigger signal Q345 is biased on by the positive voltage applied to its base from C342 R340 R342 through T377 and R341 The base of Q347 is referenced to ground th...

Page 51: ...of about 0 3 volt SWEEP GENERATOR General The Sweep Generator circuit produces a sawtooth volt age which is amplified by the Horizontal Amplifier circuit to provide horizontal sweep deflection on the CRT This output signal is generated on command trigger pulse from the Sweep Trigger circuit The Sweep Generator circuit also produces an unblanking gate to unblank the CRT during sweep time In additio...

Page 52: ...pacitor C440 The sweep gate signal from the Sweep Start Amplifier reverse biases D439 and interrupts the quiescent current flow Now the timing current through the timing resistor begins to charge timing capacitor C440 so the Sawtooth Sweep Generator stage can produce a sawtooth output signal The fast rising portion of the sweep gate signal produced by the action of C418 reduces the switching time ...

Page 53: ... the sawtooth at the output of this circuit drops negative to its quiescent level D430 is forward biased as its cathode drops about 1 2 volt more negative than the level at the emitter of Q434 Then Q434 is forward biased and its collector attempts to rise positive However the RC networks C432 R432 and C434 R434 along with capacitor C401 delay the voltage change at the collector of Q434 to allow a ...

Page 54: ...operation Then after the fine range is exceeded the coarse control R530B provides rapid posi tioning of the trace For EXT HORIZ operation an external signal connected to the HORIZ IN TRIG IN connector is applied to the base of Q513 through R501 R355B and R510 R512 The HORIZ ATTEN control R355B TRIGGERING LEVEL provides about 10 1 variable attenuation for the external horizontal signal For external...

Page 55: ...eneral The Calibrator and Regulators circuit provides a square wave output with accurate amplitude This output is avail able at the CALIBRATOR jack on the front panel or it is internally connected to the vertical deflection system in the CALIBRATE 4 DIVISIONS positions of both VOLTS DIV switches This circuit also contains two regulator circuits to provide regulated outputs of 10 5 and 81 volts In ...

Page 56: ...put level A t time of turn on circuit operation is as follows Positive voltage from the 55 volt supply provides current to the base of Q717 through R716 and R715 Q717 is forward biased and its emitter rises positive following the voltage at its base The voltage at the base of Q714 also rises positive until it reaches about 0 6 volt then Q717 is forward biased and the resulting collector current th...

Page 57: ...29 has a voltage current characteristic equal and opposite to that of the CRT grid cathode structure Therefore the over all accelerating potential of the CRT remains constant 8Tektronix Circuit Concepts booklet Power Supply Circuits Tektronix Part No 062 0888 00 pp 14 16 Secondary terminals 9 and 10 of T801 provide filament voltage for the CRT The filament voltage can be obtained from the high vol...

Page 58: ...n 7 Now the electron beam can reach the phosphor to produce a display The Unblanking Center adjustment R869 is adjusted to provide maximum beam current brightest display The circuit remains in this condition until the unblanking gate ends The unblanking gate can be interrupted during a trace to blank portions of the display In the CFIOPPED position of the vertical Mode switch a positive going sign...

Page 59: ... and the Power Mode switch SW1030 is in any position except OPERATE 11 5 35V DC or OPERATE INT BATT rectified voltage is connected across the voltage divider composed of R1022 and zener diode D1022 The anode of zener diode D1022 is connected to the positive terminal of the Battery Pack through D1016 SW1030 and F I014 and therefore main tains a level at its cathode and the base of Q1023 about eight...

Page 60: ... output power from the Power Selection stage when the AC DC Power Supply is disconnected from the indicator Since the Battery Charger stage is not affected by the power interlock the Battery Pack can be charged even when the AC DC Power Supply is disconnected from the indicator Power Mode switch SW1030 also determines the level on the zero reference voltage line In all positions of SW1030 except O...

Page 61: ...use of idealized waveforms Fig 3 14C shows how this can be done Notice that the pulse period is the same for both high source voltage and low source volt age However the pulse duration is changed so the current induced into the primary of TI is constant with each source voltage thereby creating the same field in the inductor primary of T I Since the pulse period is the same regard less of the sour...

Page 62: ...Fig 3 13 DC DC Regulator detailed block diagram W rb Power in from AC DC Power Selector circuit J1201 Circuit Description Type 422 AC DC ...

Page 63: ...r Transistors Q1105 and Q1115 form a bistable miltivibrator The negative going output pulses from the Blocking Oscillator stage are connected to the junction of D1105 and D ll 15 through R1118 These pulses switch the Multivibrator as follows assume that Q1105 is conducting and Q1115 is off The current through Q1105 raises its emitter more positive than the emitter of Q1115 and also pulls the colle...

Page 64: ...Circuit Description Type 422 AC DC 3 26 Fig 3 15 Idealized DC DC Regulator circuit waveforms ...

Page 65: ...Cl 170 C1171 C1172 supplies this initial current demand and inductors L1172 and L1182 prevent the current surges at turn on from affecting the AC DC Power Selector circuit Resistors R1172 and R1182 serve as damping resistors for L1172 and L1182 respectively to prevent oscillation of the inductors Capacitors Cl 177 and Cl 187 are in the circuit to provide protection at turn off time this protection...

Page 66: ...rrent to the Pulse Width Control stage The positive going change at the collector of Q1144 forward biases Q1154 to supply more current to the Pulse Width Control stage This increase in error current to the Pulse Width Control stage reduces the voltage induced in to the secondary of T1201 to correct the original output voltage error to maintain a regulated output voltage see Pulse Width Control dis...

Page 67: ...mary voltage applied to T1201 and also due to the frequency of operation approx imately seven kilohertz The rectifiers for each voltage and their associated filter networks are as follows 95 volt D1202 D1223 and C1202 C1203 55 volt D1203 D1222 and C 1204 C 1205 L1204 g ra tic u le lig h t voltage D1214 D1215 and C1214 12 volt D1216 D1217 and C1216 C1217 C1218 C1219 L1217 L1219 1 2 volt D1212 D1213...

Page 68: ...NOTES ...

Page 69: ...ver off the power supply chassis WARNING Dangerous potentials exist at several points through out this instrument When this instrument is operated with the covers removed do not touch exposed con nections or components Some transistors may have elevated cases Disconnect power before cleaning the instrument or replacing parts Fig 4 1 Location of cover mounting screws on rear and bottom of AC DC Pow...

Page 70: ...ful to prevent shorting the battery terminals or associated wires with tools metal work bench etc A severe burn can be obtained if a ring watch band etc comes in contact with the battery terminals Battery Pack Cleaning When the battery pack is over charged or when discharged to the point of polarity rever sal gas is formed within the nickel cadmium cell The nickel cadmium cells used in the battery...

Page 71: ...rs F and R indicate whether the front or rear of the wafer performs the particular switching function For example a wafer designated 2R indicates that the rear of the second wafer from the front is used for this particular switching function Circuit Boards Figs 4 8 through 4 17 show the circuit boards used in the Type 422 Fig 4 7 shows the location of each board within the instrument Each electric...

Page 72: ...k or blue brown gray green indicates Tektronix Part Number 152 0185 00 The cathode and anode ends of a metal encased diode can be identified by the diode symbol marked on the body Transistor Lead Configuration Fig 4 3 shows the lead configurations of the transistors used in this instrument This view is as seen from the bottom of the transistor Troubleshooting Equipment The following equipment is u...

Page 73: ...le symptom The symptom often identifies the circuit in which the trouble is located For example poor focus indicates that the CRT circuit includes high voltage is probably at fault When trouble symptoms appear in more than one circuit check affected circuits by taking voltage and waveform readings Incorrect operation of all circuits often indicates trouble in the power supply Check first for corre...

Page 74: ...ing Outside given tolerance Measure power line voltage and check if instrument is connected for correct volt age see section 2 No Yes Connect instrument for cor rect voltage and recheck affected power supply s Correct Still Incorrect 1 I I Check and or ad just affected sup ply s Trace does not appear Check sawtooth at pin A of Horizontal Amplifier board about 30 volts peak to peak Yes Check sawtoo...

Page 75: ...I 1 Fig 4 4 Troubleshooting chart for Type 422 with AC DC Power Supply Maintenance Type 422 AC DC ...

Page 76: ...instrument Resistors normally do not need to be replaced unless the measured value varies widely from the specified value D INDUCTORS Check for open inductors by checking continuity with an ohmmeter Shorted or partially shorted inductors can usually be found by checking the waveform response when high frequency signals are passed through the circuit Partial shorting often reduces high frequency re...

Page 77: ...instru ment have been manufactured by Tektronix Inc Order all special parts directly from your local Tektronix Field Office or representative Ordering Parts When ordering replacement parts from Tektronix Inc include the following information I Instrument type 2 Instrument serial number 3 A description of the part if electrical include circuit number 4 Tektronix Part Number Soldering Techniques WAR...

Page 78: ...lux remover solvent Component Replacement WARNING Disconnect the instrument from the power source be fore replacing components Ceramic Terminal Strip Replacement A complete ceramic terminal strip assembly is shown in Fig 4 5 Re placement strips including studs and spacers are supplied under separate part numbers However the old spacers may F U T n n Ceramic Strip Stud Chassis Spacer Stud Pin Fig 4...

Page 79: ...ance for the Channel 1 Attenuator A nutdriver or socket wrench should be used to remove this rod as an open end wrench may damage the rod and prevent the power supply from being secured to the indicator properly 7 The Input Amplifier board can now be removed from the assembly as follows a Unsolder the remaining connections between the Attenuator and the circuit board b Remove the three screws whic...

Page 80: ...ights and securing nuts 7 Replace the CRT socket and socket shield 8 Reconnect the anode connector Align the plug on the CRT and the jack in the connector and press firm ly on the insulated cover to snap the jack into place 9 Reconnect the trace rotation leads and the 12 volt lead at the Y Axis Align Control 10 Reconnect the deflection plate connectors Correct location is indicated on the CRT shie...

Page 81: ... be freed from the holes in the shield before the shield can be slid off 6 Remove the lid of the high voltage housing 7 To replace the high voltage compartment reverse the order of removal When placing the circuit boards back into the compartment be sure the insulator sheet is installed in the proper place Fig 4 6 shows the correct location of the circuit boards and the insulator sheet Fig 4 6 Loc...

Page 82: ...ontrol High Voltage Rectifier Multiplier and High Voltage Regulator Trigger Sweep Generator Calibrator and Regulators Channel 2 Input Amplifier Channel 1 Input Amplifier 4 14 Fig 4 7 Location of circuit boards in the Type 422 and AC DC Power Supply ...

Page 83: ...H Blu on wht G Brn red blk on tan F Red red on gy coax NOTE R12 mounted on rear of board M Yel on wht twisted with I N Vio on wht k h i t E Brn red blk on wht B Yel on wht C Blu on wht D Vio grn blk on wht O Blk on wht P Wht A Vio on wht El 4 15 Fig 4 8 Channel 1 Input Amplifier circuit board ...

Page 84: ...ntenance Type 422 AC DC D Gy E on wht Red on wht soldered Brn on wht soldered twisted pair Cl 40 NOTE R11 2 mounted on rear of board C Blu on wht 4 16 Fig 4 9 Channel 2 Input Amplifier circuit board FRONTl ...

Page 85: ... wht K Gy coax T Yel on wht J Brn red blk on tan H Gy on wht G Gy blk blk on tan F Blu bJu on gy coax E Shield for F t D 2 0 8 d Ye on wM twisted pair C Orn on wht B Wht To delay line soldered A Grn grn blk on wht E To emitter of Q244 B To Base of Q244 C To collector of Q244 Blu on wht soldered E Emitter of Q254 B Base of Q254 C Collector of Q254 Brn on wht soldered I Fig 4 10 Vertical Switching a...

Page 86: ...343 R342 Q324 C302 C302 F Shield for E E Red red on gy coax D Shield for C B Grn grn on gy K Blu on whl J Yel on whl T Vio on whl H Gy G Tan U Brn red blk on whl T Blu S Brn O Yel yel on gy coax R Shield for Q P Blk on w h l O Blk blu on w hl N Brn red blk on wht M Blk L Y e l AC Grn grn blk on wht AA Orn orn on gy coax AB Shield for A A Y Grn grn on gy c o a x l Z Shield for Y X Shield for W W Wh...

Page 87: ...dered Blu on wht soldered T Wht R Grn grn on gy coax S Shield for R P Orn orn on gy coax Q Shield for P N Wht wht on gy coax O Shield for N M Shield for L L Blu blu on gy coax K Wht J Brn red blk on tan T Vio grn blk on wht H Orn on wht G1 Orn on wht C Yel on wht D Vio grn blk on wht E Grn on wht F Brn red blk on tan A Blu B Brn red blk on tan 4 19 Fig 4 12 Horizontal Amplifier circuit board ...

Page 88: ...blk on wht K Gy blk blk on tan J Gy coax Q775 I Shield for J H Shield for G G Blu blu on gy coax Ql Q765 F Brn red blk on wht E Brn red blk on tan It IT v rtFv Q 734L W _ _ V cM RWtiLVroR D Brn blk brn on tan C Red on wht B Blk on wht A Gy on wht Fig 4 13A Calibrator and Regulators circuit board SN 28000 and up ...

Page 89: ...io grn blk on wht K Gy blk blk on tan J Gy coax T Shield for J H Shield for G G Blu blu on gy coax F Brn red blk on wht E Brn red blk on tan D Brn blk brn on tan C Red on wht B Blk on wht A Gy on wht Fig 4 13B Calibrator and Regulators circuit board SN 20000 thru 27999 4 21 ...

Page 90: ...Maintenance Type 422 AC DC 4 22 Si Fig 4 14 High Voltage Rectifier Multiplier circuit board ...

Page 91: ...ldered Yel on wht soldered Brn yel on wht soldered Brn on wht soldered Red on wht soldered Red on wht soldered Blu on wht soldered Orn on wht soldered Orn on wht soldered Wht soldered Red on wht soldered Grn on wht soldered 4 23 Fig 4 15 High Voltage Regulator circuit board ...

Page 92: ...Maintenance Type 422 AC DC 4 24 Fig 4 16 DC Power Converter circuit board ...

Page 93: ...Maintenance Type 422 AC DC E 4 25 Fig 4 17 DC Power Control circuit board ...

Page 94: ...NOTES ...

Page 95: ...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 except as specified in Section 1 A partial calibration is often desirable after replacing components or to touch up the adjustment of a portion of the instrument between major recalibrations To check or adjust...

Page 96: ...ncy two hertz to one megahertz output amplitude variable from 40 millivolts to five volts peak to peak amplitude accuracy output amplitude constant within 3 of reference at one kilohertz as output frequency changes For example General Radio Model 1310 A Oscillator Accessories 11 DC power cord 1 Fits DC portion of AC DC Power Supply power receptacle Tektronix Part No 161 0016 01 supplied accessory ...

Page 97: ...9 volts volts 10 5 volt 10 3 to 10 7 volts volts 81 volt 80 to 82 volts volts Ripple Supply REQUIREMENT maximum PERFORMANCE 1 2 volt 8 millivolts millivolts 12 volt 8 millivolts millivolts 10 5 volt 1 millivolt millivolt 81 volt 8 millivolts millivolts 7 Check Battery Charger Operation Page 5 13 REQUIREMENT CHARGE BATT 115V AC 95 volt line 325 milliamperes minimum 126 5 volt line 450 milliamperes ...

Page 98: ...3 of Channel 1 and 2 VOLTS DIV switch indication PERFORMANCE Correct_____ incorrect list excep tions ___________________________________________ _ 19 Check Channel 2 X I0 Gain Page 5 19 REQUIREMENT Four divisions 0 16 division vertical deflection at 05 VOLTS DIV X10 GAIN AC pulled out with 20 millivolt square wave input PERFORMANCE Four divisions division 20 Check Channel 1 and 2 Variable Page 5 1...

Page 99: ...within 50 millivolts output from the Channel 1 Trigger Pickoff stage PERFORMANCE W ithin____millivolts 34 Adjust Internal Trigger Compensation Page 5 25 C217 C353 REQUIREMENT Optimum square wave response through internal trigger pickoffs for CH 1 2 and CH 1 triggering PERFORMANCE Correct incorrect 35 Adjust External Trigger Compensation Page 5 26 C302 REQUIREMENT Optimum square wave response for e...

Page 100: ...nter eight divisions of total magnified sweep length PERFORMANCE W ithin division worst case over center eight divisions w ithin division worst case over two division interval 45 C he ck A d just Normal Magnified Page 5 31 Registration R535 REQUIREMENT Less than 0 2 division shift of marker at center vertical line when X I0 MAG switch is pushed in PERFORMANCE division shift 46 Check Variable Time ...

Page 101: ...brator Duty Cycle Page 5 37 REQUIREMENT Length of positive segment of square wave between 4 5 and 5 5 divisions with one complete cycle 10 divisions PERFORMANCE Positive segment divisions PERFORMANCE CHECK CALIBRATION PROCEDURE General The following procedure is arranged so the Type 422 can be calibrated with the least interaction of adjustments and reconnection of equipment A picture of the test ...

Page 102: ... the power supply see Section 2 3 Connect the power supply for remote operation see Section 2 4 Connect the AC DC Power Supply to the variable DC supply with the DC power cord supplied accessory 5 Set the controls as given under Preliminary Control Settings except as follows Power Mode OPE RATE 11 5 35V DC 6 Turn the variable DC power supply on and set it for an output voltage of 24 volts Allow at...

Page 103: ...ovided as guides to correct instrument operation and are not instrument specifications Actual values may exceed those listed without loss of measurement accuracy if the instrument meets the specifications given in Section 1 as tested in this procedure d CHECK Meter reading 12 volts 0 12 volt e ADJUST 12 Volts adjustment R1130 see Fig 5 2B fo r 1 2 volts f INTERACTION May affect operation of all ci...

Page 104: ...wn in Fig 5 3C with a minimum amount of jitter h Recheck step 1 If readjustment is necessary recheck this step also i Disconnect the precision DC voltmeter and the test oscilloscope 3 Check DC Regulation a Set the variable DC power supply for 11 5 volts output b CHECK Table 5 1 lists the power supplies in this instrument Check each supply with the precision DC voltmeter for output voltage within t...

Page 105: ... 10 millivolts division AC coupled at a sweep rate of 20 microseconds division IX probe connected to vertical input connector b CHECK Test oscilloscope display for maximum ripple of each supply as listed in Table 5 1 Fig 5 5 shows a typical display of ripple and the levels between which the ripple measurement should be made Power supply test points are shown in Fig 5 2 and 5 4 Change the test osci...

Page 106: ... low voltage indicator adjustment DC Power Control board f Slowly decrease the output voltage of the variable DC power supply g CHECK POWER light begins to blink when power supply output voltage is 22 volts 0 1 volt as indicated by the precision DC voltmeter h ADJUST With the variable DC power supply set to exactly 22 volts set the Low Voltage Indicator adjust ment R1047 see Fig 5 6B clockwise unt...

Page 107: ...ave the instrument on in this condition for extended periods of time as the high current through the external resistor may cause it to overheat If the resistor becomes overheated turn off the power and allow it to cool before continuing f Set the autotransformer output voltage to 126 5 or 253 volts g CHECK Ammeter reading 450 milliamperes maxi mum h Turn off the AC power to the instrument i Replac...

Page 108: ...e parallel to the center vertical line within 0 1 division f ADJUST Y Axis Align adjustment R856 see Fig 5 10 so the markers are parallel to the center vertical line NOTE This tolerance is provided as a guide to correct instrument operation and is not an instrument specification d ADJUST Trace rotation adjustment R851 see Fig 5 9 so the trace is parallel to the center horizontal line NOTE If the T...

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Page 110: ...1 division vertically PERFORMANCE CHECK ONLY Front panel adjustment can be adjusted as part of performance check d ADJUST Channel 1 STEP ATT BAL adjustment R21 see Fig 5 12A for minimum trace shift as the Channel 1 VOLTS DIV switch is changed from 05 to 01 e Set the Channel 1 VOLTS DIV switch to 05 f CHECK Rotate the Channel 1 VARIABLE VOLTS DIV control throughout its range Trace should not move m...

Page 111: ...le to a performance check Change the following control settings and proceed with step 1f CH 1 and 2 VOLTS DIV 05 CH 1 Input Coupling DC vertical Mode CH 1 TIME DIV 5 ms a Change the following control settings CH 1 and 2 VOLTS DIV 05 Vertical Mode ALT TIME DIV 5 ms b Position both traces to the center horizontal line with the Channel 1 and 2 POSITION controls c Connect the 10X probe to the test osc...

Page 112: ...put Coupling GND TIME DIV 5 ms 16 Check Adjust Channel 1 and 2 Gain a Test equipment required for steps 16 through 32 is shown in Fig 5 14 b Connect the standard amplitude calibrator 067 0502 00 output connector to the INPUT 1 and INPUT 2 connectors through a 42 inch BNC cable and the dual input coupler c Set the standard amplitude calibrator for a 0 2 volt square wave output d Position the displa...

Page 113: ...ings given in Table 5 2 check vertical deflection within 3 at each position of the Channel 2 VOLTS DIV switch 19 Check Channel 2 X10 Gain a Change the following control settings CH 1 and 2 VOLTS DIV 05 X10 GAIN AC Pulled out b Set the standard amplitude calibrator for a 20 millivolt square wave output c CHECK CRT display for four divisions 0 16 divi sion of deflection within 4 d Push in the X10 GA...

Page 114: ...e n CHECK Compression or expansion not to exceed 0 15 division see Fig 5 16 22 Check Channel 1 and 2 Input Coupling Switch Operation a Return both VARIABLE VOLTS DIV controls to CAL b Position display with the Channel 2 POSITION control so the bottom of the square wave is at the center horizontal line c Set the Channel 2 Input Coupling switch to AC d CHECK CRT display centered about center horizon...

Page 115: ...rtical deflection in the 20 position e ADJUST Channel 1 VOLTS DIV switch compensa tion as given in Table 5 3 use low capacitance screwdriver First adjust for optimum square corner and then for opti mum flat top Remove the 10X attenuator and 50 ohm termination as given in Table 5 3 and readjust the generator output amplitude at each setting to maintain a four division display or to provide maximum ...

Page 116: ... 4 use low capacitance screwdriver First adjust for optimum square corner and then for opti mum flat top Remove the 10X attenuator and 50 ohm termination as given in Table 5 4 and readjust the generator output amplitude at each setting to maintain a four division display or to provide maximum deflection in the 20 posi tion Fig 5 17B shows the location of the variable capa citors f Disconnect all t...

Page 117: ...quare wave response use low capacitance screwdriver for C237 and tuning tool for L245 L255 Fig 5 18B shows the location of these adjust ments L245 and L255 can be adjusted through the access holes in the rear panel of the indicator Since these adjust ments interact readjust until optimum square wave response is obtained f Set the vertical Mode switch to CH 2 g Connect the square wave generator fas...

Page 118: ...T 1 and 2 connectors through the GR to BNC adapter 18 inch 50 ohm BNC cable 50 ohm BNC termina tion and the dual input coupler b Push in the X10 GAIN AC switch c Set the sine wave generator for an eight division dis play at 50 kilohertz d Change the following control settings Vertical Mode A LG ADD INVERT Pulled out e CHECK CRT display for 0 1 division deflection or less common mode rejection rati...

Page 119: ...5 19 b Change the following control settings CH 1 Input Coupling GND TRIGGERING Coupling DC c Connect the 10X probe to the vertical input con nector of the test oscilloscope d Set the test oscilloscope for a vertical deflection fac tor of 0 01 volt division 0 1 volts division at 10X probe tip at a sweep rate of 20 microseconds division with the input coupling switch set to the ground position e Po...

Page 120: ...rd does not indicate optimum response but is provided for reference only Notice that the lower corner of the square wave is the area of interest f ADJUST C353 see Fig 5 21A for optimum square corner at the lower corner of the waveform use low capacitance screwdriver g Set the TRIGGERING Source switch to CH 1 2 h CHECK Test oscilloscope for optimum square wave response similar to Fig 5 21B i ADJUST...

Page 121: ...tch set to AC AC LF REJ and DC and the TRIGGERING Source switch set to CH 1 and CH 1 2 LEVEL control may be adjusted as necessary to obtain a stable display g Set the constant amplitude generator for a one division display at 15 megahertz h Pull the X I0 MAG switch i CHECK Stable CRT display can be obtained with the TRIGGERING Coupling switch set to AC AC LF REJ and DC and the TRIGGERING Source sw...

Page 122: ...e c Set the low frequency generator for a 2 5 division dis play 0 125 volt at one kilohertz d Without changing the output amplitude set the constant amplitude generator output frequency to 50 hertz e CHECK Stable CRT display can be obtained with TRIGGERING Coupling switch set to AC and DC LEVEL control may be adjusted as necessary to obtain a stable display f Set the TRIGGERING Mode switch to NORM...

Page 123: ...e and the 50 ohm BNC termination c Set the time mark generator for 50 millisecond mar kers d CHECK Stable display can be obtained with the LEVEL control e Set the time mark generator for 0 1 second markers b Set the low frequency sine wave generator for a four division display at one kilohertz c CHECK CRT display starts on the positive slope of the waveform see Fig 5 22A d Set the SLOPE switch to ...

Page 124: ...drange c CHECK CRT display for one marker each division between the second and tenth vertical lines Marker at tenth vertical line must be within 0 4 division within 5 of that graticule line when the marker at the second vertical line is positioned exactly d Position the first 10 division portion of the total mag nified sweep onto the viewing area with the horizontal POSITION control f CHECK Fourth...

Page 125: ...u ment operation and is not an instrument specifica tion e ADJUST Mag Register adjustment R535 see Fig 5 25C to position the first marker to the center vertical line f Pull the X I0 MAG switch g Position the middle marker three markers on sweep to the center vertical line h Push the X10 MAG switch in i CHECK Middle marker within 0 2 division of the center vertical line j ADJUST If middle marker is...

Page 126: ... of the graticule Tenth marker must be within 0 24 division within 3 of the tenth vertical line with the second marker positioned exactly to the second vertical line Fig 5 27 Location of high speed timing adjustments Horizontal Amplifier board d ADJUST C537 see Fig 5 27 for one marker each division use low capacitance screwdriver e Set the TIME DIV switch to 1 us f CHECK CRT display for two marker...

Page 127: ...1 ms 1 millisecond 1 2 ms 1 millisecond 2 5 ms 5 millisecond 1 10 ms 10 millisecond 1 20 ms 10 millisecond 2 50 ms 50 millisecond 1 1 s 0 1 second 1 2 s 0 1 second 2 5 s 0 5 second 1 52 Check Gate Output Signal a Change the following control settings TRIGGERING Source CH 1 2 TIME DIV 1 ms X I0 MAG Pushed in b Connect the GATE OUT connector to the input of the test oscilloscope with a 42 inch BNC c...

Page 128: ...f each cycle be tween 5 6 and 8 4 divisions 150 kilohertz 20 see Fig 5 29 d CHECK CRT display for total length of each chan nel segment between 2 0 and 4 7 divisions 2 0 to 4 7 microseconds Fig 5 29 Typical CRT display when checking chopped repetition rate and blanking e CHECK CRT display for complete blanking of switching transients between chopped segments see Fig 5 29 Control Setup When perform...

Page 129: ...ockwise TIME DIV EXT HORIZ c Connect the standard amplitude calibrator output connector to the HORIZ IN TRIG IN connector with the 42 inch BNC cable d Set the standard amplitude calibrator for a 50 volt square wave output e Center the display two dots on the graticule with the horizontal POSITION control f CHECK CRT display for horizontal deflection be tween 4 0 and 6 7 divisions 10 volts division...

Page 130: ...ive peak at 50 kilohertz d Adjust the LEVEL control for a stable display e Connect the output of the BNC T connector the EXT BLAN KING connector with an 18 inch BNC cable f CHECK The positive peaks of the displayed signal should be blanked with a normal INTENSITY control set ting see Fig 5 31 g Disconnect all test equipment 57 Check Adjust Calibrator Amplitude PERFORMANCE CHECK ONLY Parts a throug...

Page 131: ...curacy within 1 5 CALI BRATE 4 DIVISIONS position of Channel 2 VOLTS DIV switch operating correctly 58 Check Calibrator Repetition Rate a Set the TIME DIV switch to 0 2 ms b Position the start of the display to the farthest left vertical line c CHECK CRT display for length of one complete cycle between 4 2 and 6 3 divisions repetition rate one kilohertz 20 59 Check Calibrator Duty Cycle a Set the ...

Page 132: ...NOTES ...

Page 133: ...nal HHB hex head brass HHS hex head steel HSB hex socket brass HSS hex socket steel ID inside diameter inc incandescent int internal ig length or long met metal mtg hdw mounting hardware OD outside diameter OHB oval head brass OHS oval head steel P O part of PHB pan head brass PHS pan head steel piste plastic PMC paper metal cased poly polystyrene prec precision PT paper tubular PTM paper or plast...

Page 134: ...wing 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 your local Tektronix Inc Field Office or representative will contact you concerning any change in part number SPECIAL NOTES A N D SYMBOLS X000 Part first added at this serial number 00X Part remove...

Page 135: ... 00 C5B 281 0102 00 C5C 281 0099 00 C5E 281 0509 00 C6A 281 0504 00 C6B 281 0102 00 C6C 281 0099 00 C6E 283 0606 00 CIO1 281 0529 00 X20079 Cll 283 0068 00 Cl 2 281 0099 00 C14 283 0119 00 Cl 5 283 0058 00 20000 27999 Cl 5 283 0059 00 28000 C22 283 0081 00 20000 24999 C22 283 0059 00 25000 27999 C22 283 0111 00 28000 C28 283 0068 00 C40 281 0611 00 C41 283 0081 00 C54 283 0113 00 C60 290 0267 00 C...

Page 136: ... 14 283 0119 00 2200 pF Cer 200 V 5 Cl 22 283 0081 00 20000 24999 0 1 fiF Cer 25 V 80 20 Cl 22 283 0059 00 25000 27999 1 F Cer 25 V 80 20 Cl 22 283 0111 00 28000 0 1 pF Cer 50 V Cl 25 283 0068 00 0 01 ixF Cer 500 V Cl 26 290 0134 00 LL CN CN Elect 15V Cl 36 283 0081 00 0 1 ixF Cer 25 V 80 20 Cl 40 281 0611 00 2 7 pF Cer 200 V 0 25 pF Cl 41 283 0081 00 0 1 fxF Cer 25 V 80 20 Cl 43 281 0508 00 12 pF...

Page 137: ...32 00 35 pF Cer 500 V 1 C333 281 0632 00 35 pF Cer 500 V 1 C342 283 0068 00 o o f Cer 500 V C343 283 0081 00 0 1 xF Cer 25 V 80 20 C353 281 0064 00 0 25 1 5 pF Var Tub C356 283 0068 00 0 01 xF Cer 500 V C364 283 0068 00 0 01 xF Cer 500 V C365 283 0068 00 0 01 xF Cer 500 V C377 281 0523 00 100 pF Cer 350 V C382 290 0267 00 1 xF Elect 35 V C384 290 0267 00 1 iiF Elect 35 V C386 290 0267 00 1 F Elect...

Page 138: ...Cer 500 V C736 283 0068 00 0 01 xF Cer 500 V C737 283 0068 00 20000 27999X 0 01 ixF Cer 500 V C739 290 0188 00 20000 27999X 0 1 xF Elect 35 V 10 C741 283 0068 00 0 01 xF Cer 500 V C743 283 0068 00 0 01 ixF Cer 500 V C760 285 0622 00 0 1 ixF PTM 100 V C780 283 0129 00 0 56 xF Cer 100 V C810 283 0105 00 0 01 ixF Cer 2000 V C811 283 0105 00 0 01 ixF Cer 2000 V C812 283 0105 00 0 01 fxF Cer 2000 V C81...

Page 139: ... 00 Silicon Replaceable by 1N4152 D211 152 0185 00 Silicon Replaceable by 1N4152 D213 152 0185 00 Silicon Replaceable by 1N4152 D214 152 0185 00 Silicon Replaceable by 1N4152 D264 152 0185 00 Silicon Replaceable by 1N4152 D274 152 0185 00 Silicon Replaceable by 1N4152 D281 152 0185 00 Silicon Replaceable by 1N4152 D282 152 0185 00 Silicon Replaceable by 1N4152 D320 152 0323 00 Silicon Tek Spec D32...

Page 140: ...152 0461 00 X28000 Zener 1N821 6 2 V 5 152 0185 00 X28000 Silicon Reeplaceable by 1N4152 152 0333 00 20000 27999X Silicon High speed and conductance 152 0285 00 X28000 Zener 1N980B 400 mW 6 2 V 5 152 0166 00 20000 27999X Zener 1N753A 400 mW 6 2 V 5 152 0185 00 Silicon Replaceable by 1N4152 152 0185 00 Silicon Replaceable by 1N4152 152 0185 00 Silicon Replaceable by 1N4152 152 0185 00 Silicon Repla...

Page 141: ... Trace Rotation Transistors Q UA 151 io n 00 Silicon Q14B 151 1011 00 Silicon Q23 151 0220 00 Silicon Q34 151 0223 00 Silicon Q44 151 0220 00 Silicon Q53 151 0223 00 Silicon Q64 151 0224 00 Silicon Q74 151 0224 00 Silicon Q84 151 0223 00 Silicon Q94 151 0223 00 Silicon Q114A 151 1011 00 Silicon Q114B 151 1011 00 Silicon Q123 151 0220 00 Silicon Q134 151 0232 00 Silicon Q144 151 0220 00 Silicon Q15...

Page 142: ...N4122 Q513 151 0223 00 Silicon 2N4275 Q524 151 0220 00 Silicon 2N4122 Q543 151 0220 00 Silicon 2N4122 Q544 151 0124 00 Silicon Selected from 2N3119 Q554 151 0124 00 Silicon Selected from 2N3119 Q560 151 0224 00 Silicon 2N3692 Q714 151 0224 00 Silicon 2N3692 Q717 151 0103 00 Silicon Replaceable by 2N2219 Q734 151 0136 00 20000 27999 Silicon Replaceable by 2N3053 Q734 151 0220 00 28000 Silicon 2N412...

Page 143: ...1 0148 01 340 a A W Prec A R34 321 0182 00 768 a A W Prec 1 R35 311 0827 00 20000 27999 250 a Var R35 311 0827 01 28000 30639 250 a Var R35 311 0827 00 30640 250 a Var R39 321 0165 01 511 a A W Prec A R 41 315 0102 00 l ka A W 5 R44 322 0170 00 576 Q A W Prec 1 R45 315 0151 00 150 a A W 5 R51 315 0221 00 220 a A W 5 R53 315 0182 00 1 8 ka A W 5 R54 321 0273 00 6 81 ka A W Prec 1 R56 321 0300 00 13...

Page 144: ...rec 2 R109 315 0820 00 82 0 A W 5 R110 322 0481 01 1 MO A W Prec 2 Rill 315 0364 00 360 kO A W 5 R112 315 0101 00 100 kO A W 5 R113 315 0101 00 100 kO A W 5 R114 321 0164 00 499 0 w Prec 1 R120 321 0304 00 14 3 kO 8W Prec 1 R121 311 0328 00 1 kO Var R122 321 0178 00 698 0 A W Prec 1 R123 315 0474 00 20000 24999 470 kO A W 5 R123 315 0103 00 25000 27999 10 kO A W 5 R123 315 0474 00 28000 470 kO A W...

Page 145: ...a A W 5 R180 311 0169 00 100 a Var R181 315 0101 00 20000 25129 ioo a A W 5 R181 315 0221 00 25130 220 a AW 5 R183 321 0085 00 75 a VsW Prec 1 R184 315 0271 00 270 a A W 5 R185 315 0470 00 47 a A W 5 R1904 311 0385 01 20000 25129 250 a Var R1904 311 0385 02 25130 250 a Var R191 315 0102 00 20000 25129X l ka AW 5 R194 315 0271 00 270 a AW 5 R195 315 0470 00 47 a AW 5 R199 307 0104 00 3 3 a A W 5 R2...

Page 146: ... 0208 00 1 43 kO VsW Prec 1 321 0194 00 1 02 kO y w Prec 1 321 0097 00 20000 24999 100 O VsW Prec 1 321 0091 00 25000 86 6 0 VsW Prec 1 323 0186 00 845 0 y2w Prec 1 323 0186 00 845 0 y2w Prec 1 301 0361 00 360 0 y2w 5 315 0102 00 1 kO V i w 5 315 0222 00 2 2 kO V W 5 301 0431 00 430 0 y2w 5 315 0681 00 680 0 y4 w 5 315 0272 00 2 7 kO y4 w 5 315 0472 00 4 7 kO y4 w 5 315 0222 00 2 2 kO h w 5 301 04...

Page 147: ...a A W 5 R374 321 0194 00 1 02 ka A W Prec 1 R378 315 0431 00 430 a A W 5 R382 307 0104 00 3 3 a A W 5 R384 307 0106 00 4 7 a A W 5 R386 307 0104 00 3 3 a A W 5 R400 315 0470 00 47 a A W 5 R401 315 0151 00 isoa A W 5 R402 321 0309 00 16 2 ka w Prec 1 R403 315 0302 00 3ka A W 5 R404 315 0104 00 ioo ka AW 5 R405 315 0271 00 270 a A W 5 R406 321 1249 00 3 88 ka y w Prec 1 R407 321 0351 00 44 2 ka W Pr...

Page 148: ...Prec i R440P 323 0497 00 1 47 MO y2w Prec i R440R 323 0497 00 1 47 MO y2w Prec i R440T 315 0151 00 150 0 A W 5 R442 315 0100 00 100 A W 5 R443 315 0822 00 8 2 kO A W 5 R444 315 0101 00 100 O A W 5 R447 303 0752 00 7 5 kO 1w 5 R451 321 0337 00 31 6 kO y8w Prec 1 R452 321 0322 00 22 1 kO 8W Prec 1 R454 321 0271 00 6 49 kO A W Prec 1 R456 315 0821 00 820 0 A W 5 R457 321 0326 00 24 3 kO W Prec 1 R464...

Page 149: ... kQ 4 w Prec 1 R545 315 0151 00 150 Q 74 w 5 R554 310 0668 00 20000 21939 12 4 kQ 4 w Prec 1 R554 310 0689 00 21940 10 kQ 4 w Prec 1 R 556 321 0181 00 20000 21939 750 Q Vs w Prec 1 R 556 310 0168 00 21940 549 Q Vs w Prec 1 R561 321 0208 00 20000 21939X 1 43 kQ Vs w Prec 1 R562 321 0148 00 20000 21939 340 Q Vs w Prec 1 R562 321 0154 00 21940 392 Q Vs W Prec 1 R564 321 0277 00 7 5 kQ Vs W Prec 1 R 5...

Page 150: ...786 321 0641 01 1 8 kO AW Prec A R787 321 0126 01 200 0 AW Prec A R810 303 0105 00 1 MO 1w 5 R825 305 0564 00 560 kO 2 W 5 R829 315 0363 00 36 kO AW 5 R831 303 0225 00 2 2 MO 1w 5 R832 303 0225 00 2 2 MO 1w 5 R833 311 0469 00 1 MO Var R834 303 0185 00 1 8 MO 1w 5 R837 311 0498 00 500 kO Var R838 315 0203 00 20 kO y4 w 5 R839 321 0418 00 221 kO y8w Prec 1 R841 315 0752 00 7 5 kO A w 5 R843 315 0433...

Page 151: ...0 Lever SLOPE SW440 Wired 262 0722 01 20000 21939 Rotary TIME DIV SW440 Wired 262 0722 02 21940 Rotary TIME DIV SW440 260 0659 01 Rotary TIME DIV SW535 260 0583 01 Slide XI0 MAG SW7418 311 0385 01 20000 25129 CAL CH 1 VAR VOLTS DIV SW7418 311 0385 02 25130 CAL CH 1 VAR VOLTS DIV SW7439 311 0385 01 20000 25129 CAL CH 2 VAR VOLTS DIV SW7439 311 0385 02 25130 CAL CH 2 VAR VOLTS DIV SW74510 311 0468 0...

Page 152: ...4 00 22 j u l F Elect 15V Cl 121 285 0686 00 0 068 j u l F PTM 100 V 10 Cl 133 290 0272 00 47 j u l F Elect 50 V Cl 170 283 0111 00 0 1 j u l F Cer 50 V Cl 171 290 0274 00 80 j u l F Elect 50 V 75 10 Cl 172 290 0274 00 80 jxF Elect 50 V 75 10 Cl 173 283 0008 00 0 1 jjlF Cer 500 V Cl 177 283 0013 00 0 01 jxF Cer 1000 V Cl 181 283 0008 00 0 1 JxF Cer 500 V Cl 183 283 0008 00 0 1 jjlF Cer 500 V Cll 8...

Page 153: ... ll 76 152 0180 00 D ll 77 152 0061 00 D ll 84 152 0101 00 D ll 86 152 0180 00 Capacitors cont 0 01 fiF 0 1 j l l F 4 7 j u l F 4 7 ixF 0 1 fxF 270 fiF 270 fiF Semiconductor Device Diodes Silicon Silicon Silicon Silicon Silicon Silicon Silicon Zener Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Zener Tunnel Zener Silicon Silicon Zen...

Page 154: ...0179 00 Silicon Fast switching UTR 02 152 0061 00 Silicon Tek Spec 152 0061 00 Silicon Tek Spec 152 0179 00 Silicon Fast switching UTR 02 152 0179 00 Silicon Fast switching UTR 02 152 0061 00 Silicon Tek Spec 152 0224 00 Silicon URT 166 152 0061 00 Silicon Tek Spec 152 0061 00 Silicon Tek Spec 152 0061 00 Silicon Tek Spec 152 0061 00 Silicon Tek Spec 152 0061 00 Silicon Tek Spec 152 0061 00 Silico...

Page 155: ...34 151 0220 00 Silicon 2N4122 Q1144 151 0220 00 Silicon 2N4122 Q1154 151 0224 00 Silicon 2N3692 Q1163 151 0208 00 Silicon 2N4036 Q1164 151 0224 00 Silicon 2N3692 Q1174 151 0163 00 Silicon Selected from 2N1899 Q1184 151 0163 00 Silicon Selected from 2N1899 Q1193 151 0103 00 Silicon Replaceable by 2N2219 Q1194 151 0208 00 Silicon 2N4036 Resistors Resistors are fixed composition 10 unless otherwise i...

Page 156: ...9 00 274 0 y w Prec 1 Rll 36 315 0390 00 39 0 A W 5 Rll 43 315 0471 00 470 0 A W 5 Rll 44 315 0103 00 10 kO A W 5 Rll 53 315 0470 00 47 0 AW 5 Rll 54 315 0272 00 2 7 kO A W 5 Rll 61 315 0822 00 8 2 kO A W 5 Rll 62 315 0471 00 470 0 A W 5 Rll 63 315 0123 00 12 kO AW 5 Rll 64 315 0223 00 22 kO AW 5 Rll 65 307 0103 00 2 7 0 A W 5 Rll 72 315 0470 00 47 0 A W 5 Rll 77 315 0471 00 470 Q A W 5 Rll 82 315...

Page 157: ..._Part No Eff_____________ Disc_______________________ Description Transformers n ooo 120 0397 00 Toroid 10 turns bifilar T1001 120 0392 00 Power T1010 120 0397 00 Toroid 10 turns bifilar T il 20 120 0396 00 Toroid 6 turns trifilar T il 71 120 0393 00 Driver T1201 120 0394 00 Toroid Pre Regulator 6 23 ...

Page 158: ......

Page 159: ... must be purchased separately unless otherwise specified PARTS ORDERING IN FO R M A TIO N Replacement parts are available from or through your local Tektronix Inc Field Office or representative Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements developed in our engineering de...

Page 160: ...Mechanical Parts List Type 422 AC DC INDEX OF MECHANICAL PARTS LIST ILLUSTRATIONS Located behind diagrams FIG 1 FRONT FIG 2 CHASSIS FIG 3 AC DC POWER SUPPLY FIG 4 ACCESSORIES ...

Page 161: ... hardware not included w chassis LOCKWASHER 2 split NUT hex 2 56 x 3 1 6 inch BRACKET attenuator preamplifier mounting hardware not included w bracket SCREW thread forming 2 32 x 3 1 4 inch PHS SCREW 4 40 x V4 inch PHS RESISTOR variable mounting hardware for each not included w resistor WASHER flat y4 ID x inch OD NUT hex V4 32 x s 6 inch COUPLING rod coupling includes SCREW set 4 40 x 3 32 inch H...

Page 162: ...322 00 1 KNOB large charcoal CH 1 VOLTS DIV knob includes 213 0004 00 1 SCREW set 6 32 x 3 6 inch HSS 24 366 0140 00 1 KNOB small red VARIABLE CAL knob includes 213 0004 00 1 SCREW set 6 32 x 3 16 inch HSS 25 366 0153 00 1 KNOB small charcoal SCALE ILLUM knob includes 213 0004 00 1 SCREW set 6 32 x 3 16 inch HSS 26 366 0153 00 1 KNOB small charcoal ASTIGMATISM knob includes 213 0004 00 1 SCREW set...

Page 163: ...sembly includes ASSEMBLY solder spool assembly includes SPOOL solder mounting hardware not included w assembly SPACER plastic 0 188 inch long CUSHION accessory cover lid PIN actuator CAP actuator black plastic BODY latch STEM latch KNOB small red VARIABLE CAL knob includes SCREW set 6 32 x 3 u inch HSS KNOB large charcoal CH 2 VOLTS DIV knob includes SCREW set 6 32 x 3 6 inch HSS SWITCH wired CH 2...

Page 164: ...64 131 0344 00 1 CONNECTOR feed thru mounting hardware not included w connector 358 0241 00 1 BUSHING plastic 65 351 0147 00 4 GUIDE switch actuator 66 214 1044 00 2 ACTUATOR switch 67 260 0583 01 2 SWITCH slide mounting hardware for each not included w switch 213 0191 00 2 SCREW thread forming 5 32 x 5 8 inch PHS mounting hardware not included w assembly 68 211 0116 00 3 SCREW sems 4 40 x 5 i6 in...

Page 165: ... 01 1 ROD Power switch w knob 84 366 0153 00 1 KNOB small charcoal LEVEL knob includes 213 0004 00 1 SCREW set 6 32 x 3 1 6 inch HSS 85 1 RESISTOR variable mounting hardware not included w resistor 210 0840 00 1 WASHER flat 0 390 ID x 6 inch OD 210 0413 00 1 NUT hex 3 8 32 x y2 inch 86 210 0207 00 1 LUG solder 3 8 ID x inch OD SE 87 407 0462 00 1 BRACKET mounting hardware not included w bracket 88...

Page 166: ...1 CAP ground stem 100 214 0996 00 1 SPRING filter 101 260 0662 00 1 SWITCH lever Triggering SOURCE mounting hardware not included w switch 220 0413 00 1 NUT hex rod 4 40 x 3 u x 0 500 inch long 102 260 0663 00 1 SWITCH lever Triggering COUPLING mounting hardware not included w switch 220 0413 00 2 NUT hex rod 4 40 x 3 u x 0 500 inch long 103 260 0664 00 1 SWITCH lever Trigger SLOPE mounting hardwa...

Page 167: ...ch not included w foot SCREW 6 32 x V s inch PHS mounting hardware not included w assembly SCREW 4 40 x 5 u inch PHS SHIELD CRT rear mounting hardware not included w shield SCREW 4 40 x V4 inch PHS LOCKWASHER 4 split COVER CRT socket ASSEMBLY CRT socket assembly includes SOCKET CRT socket includes SOCKET CRT CONTACT CRT socket SHIELD CRT TUBE cathode ray tube includes RING light reflector not show...

Page 168: ...or 210 0223 00 210 0940 00 210 0583 00 1 LUG solder y4 ID x 7 u inch OD SE 1 WASHER flat y4 ID x inch OD 1 NUT hex V4 32 x 5 u inch 130 358 0252 00 131 366 0215 01 132 136 0187 00 1 BUSHING ball swivel 5 KNOB charcoal lever 1 SOCKET 1 pin mounting hardware not included w socket 210 0940 00 133 210 0471 00 1 WASHER flat ID x 3 8 inch OD 1 NUT hex V4 32 x 5 u x 9 3 2 inch 134 366 0225 00 1 KNOB char...

Page 169: ...t board includes PIN connector 45 male SHIELD horizontal amplifier POST tie off mounting hardware for each not included w post SPACER plastic 0 281 inch long CLIP electrical SOCKET transistor 3 pin mounting hardware not included w assembly SCREW sems 4 40 x 5 1 6 inch PHB WASHER flat 0 125 ID x 0 250 inch OD NUT hex 4 40 x 3 u inch BRACKET vertical board WIRE CRT lead 0 458 foot striped brown w co...

Page 170: ...0 0409 02 1 ASSEMBLY circuit board TRIGGER SWEEP GENERATOR assembly includes 388 0618 02 1 BOARD circuit board includes 27 214 0507 00 22 PIN connector 45 male 28 214 0506 00 10 PIN connector straight male 29 214 0565 00 2 FASTENER pin press 30 136 0220 00 20000 24999 11 SOCKET transistor 3 pin 136 0220 00 25000 10 SOCKET transistor 3 pin 136 0331 00 X25000 1 SOCKET transistor 3 pin 31 131 0633 00...

Page 171: ... C mounting hardware not included w assembly 43 211 0116 00 3 SCREW sems 4 40 x s 6 inch PHB 44 407 0100 00 1 BRACKET calibrator mounting mounting hardware not included w bracket 211 0008 00 3 SCREW 4 40 x y4 inch PHS 45 179 0942 00 1 CABLE HARNESS calibrator cable harness includes 46 131 0371 00 1 CONNECTOR single contact female 47 119 0037 01 1 ASSEMBLY delay line assembly includes 48 352 0083 0...

Page 172: ...SS horizontal cable harness includes CONNECTOR single contact female CLAMP loop 0 125 inch ID mounting hardware not included w clamp SCREW 4 40 x y2 inch PHS WASHER flat 0 119 ID x 3 8 inch OD NUT hex 4 40 x 3 16 inch 210 0940 00 210 0583 00 3 RESISTOR variable mounting hardware for each not included w resistor 1 WASHER flat y4 ID x 3 0 inch OD 1 NUT hex V4 3 2 x s u inch 124 0147 00 355 0046 00 3...

Page 173: ...0 x y2 inch PHS WASHER flat 0 119 Dx inch OD RESISTOR variable mounting hardware not included w resistor LUG solder ID x inch OD SE LOCKWASHER internal 3 x 2 inch WASHER flat 0 390 ID x 9 u inch OD NUT hex 3 8 32xy2 inch ASSEMBLY connector cable assembly includes BRACKET power connector CLAMP cable plastic 5 1 6 inch mounting hardware not included w clamp WASHER D shape 0 191 ID x 3 3 64 w 3 3 64 ...

Page 174: ...9 01 i BOARD circuit 87 129 0075 00 i POST tie off mounting hardware not included w post 361 0007 00 l SPACER plastic 0 188 inch long 88 179 0961 01 i CABLE HARNESS high voltage mounting hardware not included w assembly 89 211 0594 00 2 SCREW 6 32 x 2V2 inches THS 210 0803 00 2 WASHER flat 0 150 ID x 3 8 inch OD 90 343 0003 00 1 CLAMP cable plastic V4 inch mounting hardware not included w clamp 21...

Page 175: ...40 x 5 1 6 inch PHB 7 179 0979 00 1 CABLE HARNESS transfer 8 384 0519 00 2 ROD spacing mounting hardware for each not included w rod 213 0049 00 1 SCREW 6 32 x 5 u inch HHS 210 0055 00 1 LOCKWASHER 6 split 210 0802 00 1 WASHER flat 0 150 ID x 5 1 6 inch OD 9 354 0253 00 2 RING capacitor mounting 10 2 TRANSISTOR mounting hardware for each not included w transistor 210 0996 00 1 WASHER shouldered 5 ...

Page 176: ... u inch 100 csk FHS SWITCH toggle POWER mounting hardware not included w switch NUT hex 1 5 32 32 x 9 1 6 inch RING locking switch NUT switch 1 5 32 32 x 5 6 4 inch 12 sided GUIDE corner power supply mounting hardware for each not included w guide SCREW thread cutting 4 40 x 5 6 inch PHS HEAT SINK transistor mounting hardware not included w heat sink WASHER mica 0 196 ID x 0 625 inch OD LOCKWASHER...

Page 177: ...dered 6 LOCKWASHER 6 split NUT hex 6 32 x y4 inch CABLE HARNESS chassis THERMAL CUTOUT mounting hardware not included w thermal cutout LOCKWASHER 4 split NUT hex 4 40 x 3 1 6 inch CONNECTOR AC DC mounting hardware not included w connector LOCKWASHER 4 split NUT hex 4 40 x 3 1 6 inch BRACKET support SWITCH unwired POWER MODE mounting hardware not included w switch WASHER flat 0 390 ID x y1 6 inch O...

Page 178: ...FOOT rear mounting hardware for each not included w foot 213 0034 00 20000 30909 1 SCREW thread cutting 4 40 x s 16 inch RHS 213 0119 00 1 SCREW thread forming 4 24 x inch PHS 44 212 0572 00 4 SCREW 10 32 x 5V2 inches RHS 45 211 0542 00 4 SCREW 6 32 x 5 16 inch THS 210 0803 00 4 WASHER flat 0 150 ID x 3 8 inch OD 210 0457 00 4 NUT keps 6 32 x 5 1 6 inch 46 334 0959 00 1 TAG information mounting ha...

Page 179: ... I Front side or rear panel control or connector w Clockwise control rotation in direction of arrow 5 Refer to indicated diagram Connection to circuit board made with pin connector at indicated pin Connection soldered to circuit board Blue line encloses components located on circuit board ...

Page 180: ...B U D C K D A G A N s N e o o o o u p T Y P E 4 Z 2 A C D C 0 2 foe ...

Page 181: ...ground 1 5 It None Internal calibrator signal No connections except as given above Centered As follows except as noted otherwise on individual dia grams Midrange FOCUS Adjust for well defined display ASTIGMATISM Adjust for well defined display SCALE ILLUM As desired Vertical Controls both channels where applicable VOLTS CM VARIABLE Input Coupling POSITION Mode INVERT X10 GAIN AC Triggering Control...

Page 182: ... N D I T I O N S C A L IB R A T O R S IG N A L F R O M R 7 8 2 3 ADDED AS REQUIRED S E E P A R T S L IS T F O R S E M IC O N D U C T O R T Y P E S R E F E R E N C E D IA G R A M S A T T E N U A T O R S V E R T IC A L S W IT C H IN G i O U T P U T A M P L IF IE R S W E E P T R IG G E R 9 C A L IB R A T O R 4 R E G U L A T O R 0 5V D1V C W I I TRIGGER SIGNAL I T Y P E 4 2 2 A C D C 0 C H A N N E L 1...

Page 183: ... H 0 5 V 0 1 N 3 z 0 C H 0 m 30 8 T Y P E 4 2 2 A C D C 0 C H A N N E L 2 S N 2 0 0 0 0 UP N P U T A M P L I F I E R 0271 ...

Page 184: ...5 4 1 R3C s o o k t C3C _ 1 7 II C3D R3E 1 R 3 E I M C4 B 7 11 A r R4C 750K A 7 C4 C 1 7 n R 4 E 333K 4 IO 4 100 C5A 4 7 C 5 B I 7 I I R5C 900K A r C5C S 3 5 4 A 7 R5E_ 111x 4 C 5 E IS C M A K S M E L 1 T 7 P t 4 E E A C D C ...

Page 185: ... 1 C I 0 3 D 8 ______________ r z CIOAB 1 7 M _ RI04C 7 750K r C104C 1 7 1 I i RI04E 3 3 3 K T 10 T 1 0 0 C106A_L 1 0 ciofca 1 7 11 RI06C 990K _ RI06E 10 1 Kj 7 7 CIO C 1 3 5 4 __ CIO Z E 2 5 0 A T T E N U A T O R S 5 N 2 0 0 0 0 U P 8 C H A N N E L 2 ATTENUATORS ...

Page 186: ...zv div 0 V E R T I C A L S W I T C H I N G O U T P U T A M P L I F I E R s N e q o o o up T Y P t 2 a AC DG ...

Page 187: ...T Y P E 4 1 2 A C D C l S W E E P T R I G G E R 3 s M 2 0 0 0 0 U P 1268 SWEEP TRIGGER ...

Page 188: ...SIC NAL FROM D 4 2v DW AUTO C ATt FROM RAO 4 OUTPUT AMPLIFIER S SWEEP TRIGGER TIMING SWITCH HORIZONTAL AMPLIFIER C R T CIRCUIT T Y P E 2 A C D C S E E PA R TS L IS T F O R S E M IC O N D U C T O R TY P E S 0 S W E E P G E N E R A T O R 6 S N 2 0 0 0 0 U P V SWEEP GENERATOR ...

Page 189: ... E P GENERATOR H O R IZ O N T A L A M P L IF IE R Sill PARTS LIST FOi EARLIER VALUES k m SERIAL NUMBER RANGES O f PACTS MARKED W ITH BLUE OUTLINE 8 s e T Y P E 4 Z Z A C D C jg T IM IN G S W IT C H S N 2 0 0 0 0 U P TIM ING SWITCH ...

Page 190: ... IZ A T T E N 1 GAUGED W IT H T R IG G E R IN G LEVEL 1 j r f I I 3 r I R 5 0 4 392 R E F E R E N C E DIA GR AM S S W E E P T R IG G E R f S W E E P G E N E R A T O R T IM IN G S W IT C H C R T C IR C U IT SEE PARTS LIST FOR SEMICONDUCTOR TVPES H T Y P E 4 2 2 A C D C ...

Page 191: ... H O R I Z O N T A L A M P L I F s N z o o o o u p H O R I Z O N T A L AMPLIFIER ...

Page 192: ... ...

Page 193: ...II CAL R EG 0670 C A L I B R A T O R R E G U L A T O R S S N Z fOOO U P T Y P t 4 2 2 AC D C a CALIBRATOR REGULATOR ...

Page 194: ... 0 6 7 0 C A L I B R A T O R R E G U L A T O R S J S N 20 000 ll 9 9 9 TYPfe 2 AC DC CALIBRATOR REGULATOR ...

Page 195: ...CRT CIRCUIT 10 3 f 8 OS M hS q u a gs u 0 z 3 U js o 0 1 j C V J C J u l Q ...

Page 196: ... J T Y P t 4 Z 2 A C D C 0 A C D C P O W t R Ed L CTO R 11 s N e o o o o u p v AC DC POWER SELECTOR ...

Page 197: ...OWER SELECTOR O 2 0 T O C x A T C U _ E L C V T S 1 T O T B O 4 19 2 Z E R O REFRRLHC E VOLTACL O T O PO N A E NEON 3 POWER I INTERLOCK 2 4 j T Y P L 4 2 2 A C D C H AC DC R G AA _A TO R 2 5 N 2 0 0 0 0 U P AC DC REGULATOR ...

Page 198: ...FIG 1 FRONT TYPE 422 AC DC ...

Page 199: ...FIG 2 CHASSIS ...

Page 200: ...4 I TYPE 422 AC DC FIG 2 ...

Page 201: ...FIG 3 AC DC POWER SUPPLY s TYPE 422 AC DC FIG 3 ...

Page 202: ...post 3 354 0248 00 1 RING ornamental 4 378 0571 00 1 FILTER mesh installed 5 386 0118 00 1 PLATE protector CRT clear 6 378 0549 00 1 FILTER light 7 103 0013 001 1 ADAPTER power cord 3 to 2 wire 8 161 0015 011 1 CORD power 18 ga 8 ft 3 wire AC 9 161 0016 011 1 CORD power 18 ga 8 ft 3 wire DC 070 0895 00 2 MANUAL instruction not shown 1 All furnished with power supply when purchased separately i TYP...

Page 203: ...hanges immediately 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 times so some of the information on the change pages may already be in your manual Since the change information sheets are carried in the manual until ALL changes are permanently entered som...

Page 204: ...TYPE 422 AC DC TENT SN 25200 STANDARD ACCESSORIES CORRECTION FIG 4 ACCESSORIES CHANGE Fig Index No 4 4 to read 4 378 0648 00 1 FILTER mesh installed M15 369 470 ...

Page 205: ......

Page 206: ... DC i Copyright 1966 by Tektronix Inc Beaverton Oregon Printed in the United States of America All rights reserved Contents of this publication may not be reproduced in any form without permis sion of the copyright owner ...

Page 207: ...en and remove the four power supply securing screws located in the rear feet of the instrument b Separate the power supply and battery box from the indicator unit by sliding them to the rear and off the sup port rods c Loosen and remove the screw located just below the fuse holders 5 1 d Detach the battery box from the power supply ...

Page 208: ...from the Battery Pack securing screw holes b Loosen and remove from the Battery Pack the four long screws which go through it near its corners Battery Pack 41 c Set the Battery Pack on a non conducting flat sur face so it is resting on its interconnecting banana jacks and spring bracket 5 2 ...

Page 209: ...he battery box e Start each of the four long screws removed from the Battery Pack in step 2b into the four holes indicated then tighten the four screws securely f Install the battery box Battery Pack onto the power supply guiding the interconnecting banana jacks onto the banana plugs of the power supply g Re install and securely tighten the screw removed in step lc 5 3 ...

Page 210: ...ndicator unit b Start the four screws removed in step la into the holes located in the four rear feet of the power supply then tighten all four screws securely This completes the Battery Pack installation procedure For more information on the Battery Pack refer to the instruc tion manual for the Type 422 AC DC Power Supply 5 4 ...

Page 211: ...ct the battery pack from overheating during charge time The battery pack normally becomes warmer as it reaches full charge potential If the temperature surrounding the battery pack exceeds the safe operating level a thermal cutout switches the charge rate from the 400 milliampere full charge to the 30 millampere trickle charge rate When the temperature returns to a safe operating level the ther ma...

Page 212: ...r may be at fault If the battery pack is found to be defective the entire bat tery pack should be returned to Tektronix Inc for mainte nance Contact your local Tektronix Field Office or repre sentative for assistance The battery pack should be regarded as a single power storage unit rather than as a set of indi vidual cells It is not designed to be disassembled for in spection or repair Refer all ...

Page 213: ...594 00 12 146 0010 00 2 2 1 1 9 5 4 9 3 2 7 20 STUD interconnecting HOLDER battery molded BRACKET spring SPRING 4 125 inches long WASHER flat 0 150 ID x 5 16 inch OP LOCKWASHER internal split 6 TUBE spacer 1 453 inches long NUT hex 6 32 x 1 4 inch inch long TUBE spacer 1 CUSHION foam SCREW 6 32 x 2 BATTERY D size 1 2 inches THS w solder tab D A T A S H E E T NO 0 6 2 0 6 7 2 0 0 d a t e A UG 1 9 6...

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