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Page Title:
Table 5-3. Radio Receiver-Transmitter RT-980/GRC-171 Performance Tests (Sheet 15 of 17) |
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|  TO 31R2-2GRC171-2
TM 11-5820-815-14
NAVELEX 0967-LP-544-5010
Table 5-3. Radio Receiver-Transmitter RT-980/GRC-171 Performance Tests (Sheet 15 of 17)
CONTROL SETTINGS
OPERATION OF TEST
AND OPERATION
PERFORMANCE
STEP
EQUIPMENT
POINT OF TEST
OF EQUIPMENT
STANDARD
TRANSMITTER KEYING (Cont)
66
a. Adjust power supply
TEST meter
a. Observe the
a. Power indication
for 6-V dc output and
(A10A1M1)
transmitter
on TEST meter.
and connect power
is keyed.
supply to RT-980/
GRC-171 VOLTAGE
LOOP input
(A10A2J22-X/Y).
b. Adjust power supply
b. Observe the
b. Power indication
for 26-V dc output
transmitter is
on TEST meter.
and connect power
keyed.
supply to RT-980/
GRC-171 VOLTAGE
LOOP input
(A10A2J22-X/Y).
c.
Adjust power supply
c.
Observe the
c.
Power indication
for 48-V dc output
transmitter is
on TEST meter.
and connect power
keyed.
supply to RT-980/
GRC-171 VOLTAGE
LOOP input
(A10A2J22-X/Y).
d. Adjust power supply
d. Observe the
d. Power indication
for 100-V dc output
transmitter is
on TEST meter.
and connect power
keyed.
supply to RT-980/
GRC-171 VOLTAGE
LOOP input
(A10A2J22-X/Y).
67
Adjust power supply to
TEST meter
Observe the
Power indication on
current limit at 20 mA
(A10A1M1)
transmitter
TEST meter.
and connect power sup-
is keyed.
ply to RT-980/
GRC-171 CURRENT
LOOP input
(A10A2J22-V/W).
68
Disconnect power supply
from RT-980/GRC-171.
69
Connect audio oscillator
TEST meter
Observe the
Power indication on
to RT-980/GRC-171
(A10A1M1)
transmitter is
TEST meter.
AUDIO LOOP input
keyed.
(A10A2J22-T/U) and
adjust audio oscilla-
tor for 1000-Hz tone
at 0.245-V rms
output.
5-21
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