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 TM 11-6625-542-14-1
TM 11-6625-700-10 prior to using.
7-9. 1 MC Oscillator Test
(2) Connect probe to marker out of AN/USM-
a. Test Equipment and Materials Required.
108A to input of AN/USM-207.
Electronic Counter AN/USM-207.
b.
Test Connections and Conditions.
(1) Calibrate the AN/USM-207 as indicated in
Table 7-6. 1 MC Oscillator Test
Control Settings
Step No.
Test equipment
Equipment under test
Test procedure
Performance standard
As required to
POWER: ON 1
Observe frequency counter
Counter should read 1 mc ' 10
cycles.
measure 1 mc.
MICROSECONDS:
depressed. All other
push buttons ejected
b.
7-10.
Waveforms Check
a. Test Equipment and
Materials
Required.
Oscilloscope AN/USM-281A.
Table 7-7. Waueforms Check
Control Settings
Step No.
Test equipment
Equipment under test
Test procedure
Performance standard
Trigger slope: +
POWER: ON. All
Connect input A of
Waveshapes should appear
Sweep mode:
pushbuttons ejected.
oscilloscope to test point
as shown in table 7-8.
normal. Trigger
locations as indicated in table
source: internal.
7-8.
Refer to table 7-8
for variable
control settings.
7-4
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