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 TM
11-6625-2609-34
c. Procedure.
Control settings
Step
Test procedure
Performance l tandavd
Equipment under test
Test equipment
No.
None.
a. Set all test panel
1
AN/ARC-134
Apply primary operating
power to test equipment
switches to OFF.
Set meter switch to
b. Set EXT. SQUELCH
LINE V.
and maintenance kit.
CONTROL
fully
AN/USM-44
counterclockwise.
Set output level to zero.
ME-30A/U
Range scale:
30 vat.
Maintenance kit 28.7 VDC
CAUTION
2
Leave controls in positions Leave controls in position
indicator lamp, intercom
Be sure to connect the
last indicated in step 1.
last indicated in step 1.
control panel, and radio
11509A fuseholder be-
control panel lamps
tween the AN/USM-44
must light.
output receptacle and
maintenance kit antenna
connector W1P3 as shown
in figure 3-5. The fuse-
holder must be equipped
with a F01A250V1-16A
fuse (1/16-amp, 250-volt,
normal blow). Do not set
the test panel PTT switch
to ON when the AN/
USM-44 is connected to
W1P3. Set maintenance
kit POWER CB circuit
breaker to ON.
a. Indicator lamps behind
Set maintenance kit VHF
Leave controls in positions Leave controls in position
3
kit
maintenance
COMM OFF-PWR
last indicated in step 2.
last indicated in step 2.
VHF COMM fre-
switch to PWR.
quency counter dials
must light.
b. Meter on AN/ARC-
134 must indicate
27.5 Vdc ( - 20%,
+10%).
c. The I N P U T CUR-
RENT meter must
indicate 2 to 3 amp.
4
An output indication must
Set maintenance kit VHF
Leave controls in positions
AN/ARC-134
be obtained on the ME-
last indicated in step 2.
COMM frequency-selec-
Leave controls in posi-
30A/U.
tor switches to 132.500
tions last indicated in
NOTE
MHz.
step 1.
AN/USM-44
frequency
AN/USM-44
may have to be read-
a. Frequency:
justed.
132.500 MHz.
b. Internal modulation:
30% at 1000 Hz.
c. Output level:
6 uv.
ME-30A/U
Leave controls in posi-
tions last indicated in
step 1.
(4)
Headset-Microphone H-157/AIC.
3-10. Receiver Circuit Test No. 2
(5)
Voltmeter, Electronic ME-30A/U.
a. Test Equipment and Material
(6)
Adapter.
(1) Radio Set AN/ARC-134.
(7)
Fuseholder 11509A (part of MK-1004A/
( 2 ) Generator, Signal AN/USM-44.
ARC).
(3) Power supply.
Change 1
3-11
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