Tektronix 453 User Manual

Performance Check/Calibration-Type 453/R453
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(8)
Fig. 5-23. (A) Typical CRT display when checking external 10 mega-
hertz triggering, (8) typical CRT display when checking external
50 megahertz triggering.
. g. Disconnect the constant-amplitude generator signal
from the A EXT TRIG INPUT connector and reconnect it
to the 8 EXT TRIG INPUT connector.
h. Change the following control settings:
A
SOURCE
A LEVEL
HORIZ DISPLAY
INT
Set for stable A display
DELAYED SWEEP (8)
i. CHECK-Stable CRT display (see Fig. 5-238) can be
obtained
with the 8 COUPLING switch set to AC, LF REJ
and DC (8 LEVEL control may be adjusted as necessary to
obtain stable display).
j. Set the MAG switch to OFF.
k. Set the constant-amplitude generator for a one-division
display
at l 0 megahertz.
I. CHECK-Stable CRT display (see Fig. 5-23A) can be
obtained
with the 8 COUPLING switch set to AC, LF REJ
and DC (8 LEVEL control may be adjusted as necessary to
obtain stable display).
m. Disconnect all test equipment.
34. Check A and B Low-Frequency Triggering
Operation
. a. Connect the low-frequency constant-amplitude genera-
tor to the A
EXT TRIG INPUT connector through a 50-ohm
5-26
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v
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(8)
Fig. 5-24. (Al Typical CRT display when checking internal low-
frequency
triggering at 60 hertz, !Bl typical CRT display when ,....,
checking external low-frequency triggering at 60 hertz .
8NC cable and the 8NC T connector. Connect the output
of the 8NC T connector to the Channel l INPUT connector
through an
18-inch 50-ohm 8NC cable and a 50-ohm 8NC
termination.
b. Change the following control settings:
A and 8
TIME/DIV
HORIZ DISPLAY
5 ms
A
c. Set the low-frequency generator for a 0.2-division dis-
play at 60 hertz.
d. CHECK-Stable CRT display (see Fig. 5-24A) can be
obtained
with the A COUPLING switch set to AC, HF REJ
and DC (A LEVEL control may be adjusted as necessary to
obtain
stable display).
e. Set the A and 8 SOURCE switches to EXT.
f. Set the low-frequency generator for a one-division
display
at 60-hertz (50 millivolts).
g. CHECK-Stable CRT display (see Fig. 5-248) can be
obtained
with the A COUPLING switch set to AC, HF REJ
and DC (A LEVEL control may be adjusted as necessary to
obtain stable display .
h. Change the following control settings:
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Tektronix 453 Specifications

General

Brand	Tektronix
Model	453
Category	Test Equipment
Language	English