AB Amps 980A Operations Instructions download pdf (Page 119)

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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AB Amps 980A Operations Instructions Page 119

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