Tektronix TYPE Z PLIG-IN Instruction Manual Download

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C A L I B R A T I O N

INTRODUCTION

A complete procedure for checking the operational

standards and calibration of the Type Z Plug-In Unit is

provided  in  this  section  of  the  manual.  The  steps  in  the
procedure  are  arranged  in  correct  sequence  to  avoid  un
necessary  repetition.

The step-by-step instructions also furnish an orderly ap

proach for isolation of malfunctions which may develop.
Consequently, this procedure should be used in conjunction

with any maintenance and troubleshooting system.

If an abnormal indication is obtained at some point in

the procedure, it is not usually necessary to locate its cause

before  continuing  to  the  next  step.  Additional  symptoms
revealed  by  performing  further  steps  will  frequently  simplify
the  task  of  locating  trouble.  Obscure  symptoms,  if  any,
usually  show  up  when  performing  the  first  eleven  steps  of

the procedure.

For this procedure, the Z Unit should be used in con

junction with a properly calibrated Tektronix Type 540-

Series oscilloscope.

Oscilloscope control settings for a

Type  541A  Oscilloscope  are  listed  in  the  procedure;  cor
responding  control  settings  should  be  used  if  a  different
oscilloscope  is  used.

Test equipment used in a particular step should be left

connected  at  the  end  of  that  step  unless  instructions  state
otherwise.  Sim ilarly,  controls  not  mentioned  are  assumed
to  be  in  the  positions  they  were  in  at  the  conclusion  of  the
preceding  step.

If information explaining the normal operation of front-

panel controls is needed before starting the procedure,

consult the Operating Instructions section of this manual.

3. Sine-wave generator, Tektronix Type 190A Constant-
Amplitude Signal Generator or equivalent. Required spec

ifications are: frequency range of 50 kc to 13 mc; output

amplitude  of  0.14  volt  or  more;  output  must  be  adjustable
(manually  or  automatically)  for  constant  amplitude  within
the  above  frequency  range.

4. Precision

dc voltmeter.

Required specifications are:

accuracy of 0.05% or better; resolution of 50 ^.volts or less;

must be of the nulling type with infinite impedance at null.
If a John Fluke Differential Voltmeter is available, use

Model 803 or equivalent.

5. Calibrated volt-ohm meter (VOM). Sensitivity of 20,000
Q/v at full deflection.

24-JuJuf Input Capacitance Standardize^ Tektronix Type

CS24 (Part No. 011-029) or equivalent.

7. Plug-in cable extension, Tektronix Part No. 012-038.

8. Plug-in extension, Type EP54, Tektronix Part No. 013-019.

9. 52-ohm coaxial cable, Tektronix Part No. 012-001.

10. 52-ohm 5-to-l “ L" attenuator, Tektronix Part No. 011-

002

11. 52-ohm cable termination, Tektronix Part No. 011-001.

12. Suggested tools: screwdriver, shank 2 " long x 1/8"

dia.;  0.050"  alien  wrench;  low-capacitance  screwdriver,
Tektronix  Part  No.  003-000;  alignment  tool  consisting  of
a  handle  (Tektronix  Part  No.  003-007),  a  low-capacitance
screwdriver  insert  with  a  metal  bit  (Tektronix  Part  No.
003-334,  and  a  hexagonal  core  insert  (Tektronix  Part  No.

003-310).

EQUIPMENT REQUIRED

The following equipment or its equivalent is required to

perform a complete calibration of the Type Z Plug-In Unit.

1. Square-wave generator, Tektronix Type 105 or equiva
lent. Required specifications are: 13-nsec risetime or less;

output  frequencies  of  approximately  1  kc  and  10  kc;  output
amplitude  variable  from  10  to  100  volts  across  600-ohm
internal  load.

2. Square-wave generator, Tektronix Type 107 or equiva

lent. Required specifications are: 3 nsec risetime or less;

output frequency of approximately 1 me; output amplitude
variable to at least 0.35 volt.

PRELIMINARY PROCEDURE

N O TE— M ake certain the — 150-, + 1 0 0 - , + 2 2 5 - ,
and + 35 0-vo lt pow er supplies in the oscilloscope

are regulating and w iti
ances before attempting