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Page Title:
Table 5-4. RF Power Detection and Metering Circuit Performance Test |
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  TM 11-6625-2946-14/TM 08168A-14/1
b. Test Connections and Conditions. Connect equip-
C.
Procedure. Perform the procedures as described in
ment as shown in figure 5-4A. Set power supply voltage
to 24 vdc.
Table 5-4. RF Power Detection and Metering Circuit Performance Test
(with Power Amplifier)
Control setting
Step
Test
Equipment
Test
Performance
no.
equipment
under test
procedure
standard
FUNCTION:
SG 1144(V)1/U
a. Connect output of power amplifier to wattmeter input and adjust out-
a. None
XMT
put of rf signal generator for an indication of 0.5 watt on wattmeter.
Adjusted for 54.05 MHz
b. Disconnect output of power amplifier from wattmeter and connect it
40 mV output.
b. 5.0 *0.5 div.
BOONTON 230A
to ANTENNA receptacle on test set. Observe test set meter reading.
Range Switch: OFF
Band Switch: 35-65
Tuning Controls: 54.06
MHz
Power switch: ON
AN/URM-182
Adjusted for O to 10 watts
Table 5-4A. RF Power Detection and Metering Circuit Performance Test
(without Power Amplifier}
Control settings
Step
Test
Equipment
Test
Performance
no.
equipment
under test
procedure
standard
AN/PRC-168
a. None
Adjust for 54.05 MHz,
0.5W.
AN/URM-182
b. Connect radio output to test set ANTENNA input. Press PUSH TO
b. 5.0 *0.5 div.
Adjusted for O to 10 watts
TALK button on radio set. Observe test set reading.
(5) Signal Generator SG-1144(V)1 /U
5-11. RF Signal Generator Output Fre-
(6) Adapter UG-914/U
quency and Level Performance Test
(7) Detector, Texscan CD-50
a. Test Equipment and Materials.
b. Test Connections and Conditions. Connect equip-
(1) Frequency Counter AN/USM-207
ment as shown in figure 5-6. Disconnect mixer output
(2) RF Voltmeter AN/URM-145
cable attenuator and connect to UG-914/U.
(3) Power Supply PP-3940/G
c. Procedure. Perform the procedures as described in
(4) Oscilloscope AN/USM-281C
Table S-5. RF Signal Generator
Output Frequency and Level Performance Tests
s
Control settings
Equipment
Performance
Step
Test
Test
no.
equipment
under test
procedure
standard
1
PP-3940/G
POWER: EXT a. Adjust power supply COARSE ADJ and FINE ADJ controls for a
a. None
COARSE ADJ: fully ccw
FUNCTION: reading of +24 vdc on its voltmeter.
ON/OFF switch: ON
RCV
REQUENCY
AN/USM-281C
CODE: 1001
Controls set for 10 ms/cm
b. Press and hold test set SENS pushbutton. Observe waveform on oscil-
b. None
horiz and 10mV vertical
loscope and adjust SG - 11 44(V) I/U frequency control until 1 cycle or
deflection.
less/cm sinewave is obtained. Release SENS pushbutton.
5-13
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