Tektronix 323, Инструкция по эксплуатации

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Calibration— Type 3 2 3
f. Change the following control settings:
VOLTS/DIV 5
TRIGGER + AUTO
EXT TRIG OR 10X
HORIZ ATTEN
g. Set the low-frequency generator for a 3.2-division dis­
play (16 volts peak to peak) at one kilohertz.
h. CHECK— Rotate the TRIGGER control throughout the
positive-slope area and check that the display can be trig­
gered at any point along the positive slope of the waveform.
Display is not triggered at either extreme of the positive-
slope area except in + AUTO detent.
i. CHECK— Rotate the TRIGGER control throughout the
negative-slope area and check that the display can be trig­
gered at any point along the negative slope of the wave­
form. Display is not triggered at either extreme of the neg­
ative-slope area except in — AUTO detent.
j. Disconnect all test equipment.
52. Check Calibrator Risetime
a. Change the following control settings:
VOLTS/DIV
INPUT
TRIGGER
Trig/Horiz Coupling
TIME/DIV
X10 HORIZ MAG
5 DIV CAL
GND
- AUTO
INT TRIG AC
.1 ms
Pulled out
53. Check Calibrator Repetition Rate
a. Change the following control settings:
TRIGGER + AUTO
TIME/DIV .2 ms
X 1 0 HORIZ MAG Pushed in
b. Position the start of the trace to the left (first) ver­
tical line of the graticule.
c. CHECK— CRT display for duration of one cycle be­
tween 5 and 10 divisions (repetition rate 750 hertz, ± 2 5 0
hertz).
54. Check Calibrator Duty Cycle
a. Set the TIME/DIV switch to .1 ms.
b. Set the VARIABLE TIME/DIV control for one complete
cycle in 10 divisions.
c. CHECK— CRT display for length of positive segment
of the square wave between four and six divisions (duty
cycle 40% to 60%).
d. Return the VARIABLE TIME/DIV control to CAL.
NOTE
Accuracy of the Calibrator output voltage was set
in step 4 of this procedure.
b. Position the rising portion of the waveform onto the
viewing area with the horizontal POSITION control and cen­
ter the display with' the vertical POSITION control.
c. CHECK— CRT display for 0.2 division or less horizontal
distance between the 10% and 90% points on the leading
edge of the calibrator waveform (two microseconds or less
risetime).
This completes the calibration procedure for the Type
323. Disconnect all test equipment and replace the cabinet.
If the instrument has been completely checked and calibrated
to the tolerances given in this procedure, it will meet the
electrical characteristics listed in the Performance Require­
ment column of the Type 323 Specification section of this
manual.