Calibration Procedure - Tektronix TYPE CA Instruction Manual

INTRODUCTION
Inf or mation con t ained
provided as an aid to recalibr
the op e ration of the Type CA Plug-In U
add i tion, this section may be used to isolate
troubles occuring w i thin the unit.
A ppar ent troubles in the un
result of improp e r calibration of one or more
circuits. C ons equen t
should be an in t eg r al part of the troublesho
ing procedure. A bnor
during calibration checks w
isolating troubles to a definite circuit or stage.
In the instructions that follow, the steps
are arr a nged in the prope
comp ete recalibra ti on of the instrument. Each
l
numbered step contains the information required
to make one check, one adjus
of related adju s tmen t
are arr a nged so that u
of certain checks is avoided.
In each calibration step only the required
information is given. Detailed instructions per ­
taining to normal operation of the instrument
are not included. If you are in doubt as to
the proper operation of controls, refer to
the Operating Instructions.
Controls not mentioned in a particular cal ­
ibration step are assumed to be in the positions
they were in during the previous step. All
test equipment used in any particular step
should be disconnected at the end of the step
unless you are instructed to the contrary.
If a single control requires adjustment, it
can be adjusted in the applicable step of this
procedure without performing other steps as
well. It will be necessary, however, that you
refer to the calibration steps immediately pre ­
AA
in this section is
ati ng and checking
ni t. In
i t are often the
ly, calibration checks
ot
mal indications occuring
i ll often aid in
r sequence for a
t men t , or a series
s or checks. The steps
nnecess ary repeti ti
Calibration - Type CA
CALIBRATION
PROCEDURE
ceding the adjustment you wish to make to
determine the proper settings for the controls
not mentioned in that step.
If you suspect that the unit is out of cal ­
ibration but you are not aware of which par ­
ticular adjustment will correct the difficulty,
it is usually best to run through the entire

calibration procedure.

be certain that the unit is properly calibrated
without resorting to a method of
experimentation.
­
EQUIP ENT REQUIRED
The following equipment or its equivalent
is required to perform a complete calibration
of the Type CA Plug-In Unit.
1. Tektronix 540- eries convertible oscillo ­
scope or equivalent.
on
2. DC voltmeter with sensitivity of at least
20,000-ohms per volt.
3. Ohmmeter.
4. Type 190 or 190A constant-Amplitude ignal
Generator or equivalent, providing constant
amplitude sine waves from about 50 kc to
30 me with output amplitude constant within
+ or- 2%.
5. Type 105 quare-Wave Generator or equiva ­
lent with frequency range of about 25 cycles
to 1 m c , risetime at least .02 microseconds
and frequency indication accuracy of no
poorer than +or- 3%.
6. Type 107 quare-Wave Generator or equiva ­
lent with frequency range of 400 kc to 1 me,
peak-to-peak output voltage of at least 0.1
to .5 volts, and risetime of 3 nanoseconds
or less.
ECTION
In this way you can
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