TM 11-6625-847-45
Step
Control setting and operation of
No.
Operation of test procedure
equipment under test
Performance standard
3
Refer to figure 5-1 for
Rotate the SERV SEL switch to
test equipment; ener-
OVEN ON. Adjust the
gize and allow 30
DC VOLTAGE 20 control
minutes for warmup.
for an indication of + 20 volts
Connect the dc test
dc on the ME-26(*)/U.
leads of the ME-
26(*)/U to DC
VOLTAGE test points
+20 and ground.
4
Use the AN/USM-207
Adjust the IF OSCILLATOR
Indication if 1.75000 mc 100
to measure the fre-
1.1750 MC output control
cps.
quency at IF OSCIL-
for an indication on the AN/
LATOR 1 1.750
USM-207.
MC OUT connector.
5
Disconnect the
Rotate the IF OSCIL-
Output rf level varies
AN/USM-207 from
LATOR 1.175 MC
from 0 to not less
the IF OSCILLATOR 1
output control from
than 300 mv rms.
1.75 MC OUT connector,
fully counter clock-
and connect the
wise to fully clock-
AN/URM-145 (terminated)
wise.
in 50 ohms).
6
Use the AN/USM-207
Adjust the IF OSCILLATOR
Indication is 1.752500 mc 100
to measure the fre-
2 1.7515. MC output control
cps.
quency at IF OSCIL-
for an indication on the AN/
LATOR 2 1.7515
USM-207.
MC OUT connector.
7
Disconnect the
Rotate the IF OSCILLATOR 2
Output rf level varies
AN/USM-207 from
1.7515 MC output control
from 0 to not less
the IF OSCILLATOR
from fully counter-clock-
than 300 mv rms.
2 1.7515 MC OUT
wise, to fully clockwise.
connector, and connect the
AN/USM-145 (terminated in
50 ohms).
8
Use the AN/USM-207
Adjust the IF OSCILLATOR
Indication is 1.752500 mc
to measure the fre-
3 1.7525 MC output control
100 cps.
quency at the IF
for an indication of the AN/
OSCILLATOR 3
USM-207.
1.7525 MC OUT
CONNECTOR.
9
Disconnect the
Rotate the IF OSCILLATOR 3
Output rf level varies
AN/USM-207 from
1.7525 MC output control
from 0 to not less
the IF OSCILLATOR
from fully counter-clock-
than 300 mv rms.
3 1.7525 MC OUT
wise to fully clockwise.
connector, and
connect the AN/USM-145
(terminated in 50 ohms).
5-2
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