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Page Title:
Sectionalization Tests Using AN/UPM-137A-CONT. |
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 I
Control settings
Normal Indication
Procedure
Equipment under test
Test equipment
Step
5
b. None.
b. Adjust AN/APM-270(V) REPLY
(Cont)
MODULATIONSPACING
PULSE 2 control ccw until test
set just indicates REJECT.
c. None.
c. Connect AN/UPM-187A oscillo-
VERTICALCHAN
scope
AVIDEO IN jack to
A N / U P M - 1 3 7 A rf generator
VIDEO OUT jack.
d. REJECT indicator lights.
d. Adjust AN/APM-270V REPLY
MODULATION
SPACING
PULSE 2 control ccw until delay
between leading edges of first
and second pulses displayed on
A N / U P M - 1 3 7 A oscilloscope
CHAN A is 1.45 sec.
e. ACCEPT indicator lights.
e. Adjust AN/APM-270V REPLY
MODULATION
SPACING
PULSE 2 control cw until delay
between leading edges of first
and second pulses displayed on
A N / U P M - 1 3 7 A oscilloscope
CHAN A is 1.65 sec.
f. ACCEPT indicator lights.
f. Adjust AN/APM-270V REPLY
MODULATIONSPACING
PULSE 2 control cw until delay
between leading edges of first
and second pulses displayed on
A N / U P M - 1 3 7 A oscilloscope
CHAN, A is 1.95 sec.
g. REJECT indcator lights.
g. Adjust AN/APM-270V REPLY
MODULATION-SPACING-
PULSE 2 control cw until delay
between leading edges of first
and second pulses displayed on
A N / U P M - 1 3 7 A oscilloscope
CHAN A is 2.16 sec.
h. None.
h. Set AN/APM-270(V) REPLY
MODULATIONSPACING
PULSE 2 control to 0.
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