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 TM 11-6625-2609-34
on the test panel, Place the C1611D/AIC trans-
(8) 1/16-amp, 250-volt fuse F01A250V1-16A
mit-interphone selector switch in position 3, the
( p a r t of MK-1004A/ARC).
R E C E I V E R S 3 switch ON, all other RECEIV-
b. Test Connection and Conditions. Connect the
ERS switches off, and position the VOL control
equipment as shown in figure 3-5. Connect the
as required, These settings must be maintained
during the test.
M E - 3 0 A / U to the DATA LINK OUTPUT jacks
c. Procedure.
Control settings
Steps
Performance standard
Equipment under test
Test procedure
No.
Test equiptment
a. None.
a. Apply primary operat-
AN/ARC-134
1
Set all test panel switches
ing power to test
Set meter switch to
to OFF and set EXT.
equipment and main-
LINE V
SQUELCH CONTROL
tenance kit.
AN/USM-44
fully clockwise.
CAUTION
a. Frequency:
Be sure to connect the
192.500 MHz
11509A fuseholder be-
b. Internal Modula-
tween AN/USM-44
tion:
30% at 1000
output receptacle and
maintenance kit an-
Hz
tenna connector W1P3
c. Output level:
as shown in figure
6 uv
3-5, The fuseholder
ME-30A/U
must be equipped with
Range scale:
a type F01A250V1-
3 vac
(1/16-
16A
fuse
amp, 250-volt, normal
blow). Do not set the
test panel PTT switch
to ON when the AN/
USM-44 is connected
to W1P3.
b. An output indication
b. Set the maintenance
must be obtained on
kit POWER CB cir-
the ME-30A/U.
cuit breaker to ON,
VHF COMM OFF-
NOTE
PWR switch to
frequency
AN/USM-44
PWR, and VHF
may have to be readjusted
COMM frequency-
slightly.
selector switches to
132.500 MHz.
2
Leave control in position
a. A signal should be
Leave controls in positions
a. Set maintenance kit
last indicated in step 1.
last indicated in step 1.
heard in the head-
AUDIO switch to
ON.
set.
b. Set EXTERNAL
should
b. The
signal
SQUELCH switch to
again be heard, in-
ON and adjust EXT.
dicating that the
AN/ARC-134
SQUELCH CON-
TROL until signal
squelch circuit is
just disappears.
disabled.
Press maintenance
kit COMM TEST
switch.
c. Release COMM TEST
c. Same as b above.
switch and set
SQUELCH DIS-
ABLE switch to
ON.
a. AN/USM-44 output
AN/ARC-134
3
a. Set the maintenance
Leave controls in position
level should not be
kit AUDIO switch to
Leave control in posi-
Iast indicated in step 1.
greater than 1 v.
tion last indicated in
ON, SQUELCH
step 1.
DISABLE switch
Change 1
3-12
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