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Page Title:
Table 5-4. Radio Set Control C-7999/GRC-171 Performance Test |
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|  TO 31R2-2GRC171-2
TM 11-5820-815-14
NAVELEX 0967-LP-544-5010
Table 5-4. Radio Set Control C-7999/GRC-171 Performance Test
CONTROL SETTINGS
OPERATION OF TEST
AND OPERATION
PERFORMANCE
STEP
EQUIPMENT
POINT OF TEST
OF EQUIPMENT
STANDARD
1
Connect equipment as shown
Set RT-980/GRC-171
in figure 5-8. Set variable
REMOTE/LOCAL
attenuator to 60 dB.
switch to REMOTE
and POWER ON/
OFF switch to ON.
2
C-7999/GRC-171
On C-7999/GRC-
C-7999/GRC-171 is
panel lights and
-171 set PWR
lit and READY
READY lamp
switch to ON.
lamp is on.
3
Reduce variable attenuator
XCVR
Set 100-MHz digit of
Frequency set on
setting until frequency
(A10W3J2)
remote frequency
frequency select
counter stabilizes (20 to
select switches to
switches + 1.125
10 dB).
position 3 and turn
kHz. If error ex-
each of the remain-
ceeds 1.125 kHz,
ing switches through
compute actual
its range. Key the
allowable error
transmitter from the
(selected frequency
remote station at
+ 0.0005%).
each selected fre-
quency and observe
the frequency
counter.
4
RT-980/GRC-171
On C-7999/GRC-171
RT-980/GRC-171
front panel and
set PWR switch to
POWER lamp and
C-7999/GRC-171
OFF
C-7999/GRC-171
front panel
READY lamp are
OFF.
5
On C-7999/GRC-171
RT-980/GRC-171
set PWR switch to
POWER lamp and
ON.
C-7999/GRC-171
READY lamp are
ON.
6
Set C-7999/GRC-
171 PWR switch to
OFF and RT-980/
GRC-171 REMOTE/
LOCAL switch to
LOCAL.
7
Turn off and disconnect
Place Radio Set
all test equipment from
AN/GRC-171 in
Radio Set AN/GRC-171.
operational status
required.
5-24
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