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  *TM-11-5821-284-34
Test equipment
Performance
Step
control settings
Figure ref.
Test procedure
standard
2
Readjust AN/USM-44A
Fig 5-6 1
Same as step 1
Same as step 1
and Power Amplifier for
50MHz output, maxi-
mum power
3
Readjust AN/USM-44A
Fig 5-6 1
Same as step 1
Same as step 1
and Power Amplifier for
76-MHz output, maxi-
mum power
b. Test Connections and Conditions. Connect
5-5.
Servo Loop Test
the equipment as shown in figure 5-2. Turn on the
a. Test Equipment
equip-ment and allow 5-minute warmup before
(1) Test Set, Antenna AN/ARM-1 15.
proceeding.
(2) Generator, RF Signal AN/USM-44A.
c. Procedure.
(3) Oscilloscope, AN/USM-281.
(4) Amplifier, Power Boonton 230A
(5) Power Supply.
Test equipment
Performance
Step
control settings
Figure ref.
Test procedure
standard
1
AN/ARM-115
Observe waveform at
Waveform is same as that
METER FUNCTION OFF
(TP 17)
J2-K
shown in figure 6-4X
MV ADJUST. OFF
Unit runs contuiually,
MANUAL TUNE. OFF
positioning vacuum
AN/USM-44A Adjust
variable capacitor C1
for 30MHz output,
from maximum to minm-
maximum power
mum
Power Amplifier Adjust
for 30-MHz output,
maximum power.
AN/USM-160 Adjust to
observe waveform
shown in figure 6-4X
Power Supply Adjust for
+27. 5 Vdc
2
Readjust AN/USM 44A
Same as step 1
Same as step 1.
and Power Amplifier
(TP-17)
for 50MHz output,
maximum power
3
Readjust AN/USM44A
Same as step 1
Same as step 1.
and Power Amplifier
for 76-MHz output,
maximum power
lead of 0-500 MV OUTPUT to FLI and negative lead to
5-6.
Fine Tune Mode Test
FLS. Turn on the equipment and allow 5-minute warm-
a. Test Equipment.
up before proceeding.
(1) Test Set, Antenna AN/ARM-115.
c. Procedure.
(2) Oscilloscope, AN/USM-281.
(3) Power Supply.
b. Test Connections and Conditions. Connect
the equipment as shown in figure 3-2. Connect positive
Test equipment
Performance
Step
control settings
Figure ref.
Test procedure
standard
1
AN/ARM-115.
Fig. 5-6 1
Ground FLA and observe
Waveform Is the same as
METER FUNCTION +0
(TP-16)
waveform at FL6
that shown in figure
to 500 mV
6-4U.
MV ADJUST.
Adjust for + 100 mV.
5-2
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