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|  TM 11-5820-509-35
6-7. Tests to be Performed
(a) Input current.
a. Audio Amplifier AM-3506/PRC47. The following
(b) Power amplifier plate voltage.
tests must be performed using the test fixture for the
(c) Power amplifier screen voltage.
AM-3506/PRC-47 (fig. 64). A schematic diagram, parts
(d) Driver plate voltage.
layout photographs and parts lists for this test fixture are
(e) Relay voltage.
included in section III.
(I) Filtered low voltage.
(1) Initial settings and adjustments.
(g) Regulated voltage.
(2) Maximum output levels, receive mode.
(h) Filament voltage.
(3) Frequency response and distortion,
(i) Power amplifier bias voltage.
receive mode.
(j) Driver bias voltage.
(4) AVC signal gate operation, receive mode.
(k) Voltage regulator operation.
(3) Performance tests, 110-volts, 400-Hz
response, transmit mode.
primary power source.
(6) Frequency response at nominal output,
(a) Input current.
transmit mode.
(b) Relay voltage.
(7) CW oscillator operation test.6-7.
(c) Filtered low voltage.
b. Amplifier-Modulator AM-3507/PRC-47.
The
following tests must be performed using the test fixture
(d) Regulated voltage.
for AM-3507/PRC-47 (fig. 6-5). A schematic diagram,
(e) Filament voltage.
parts layout photographs, and parts lists for this test
e. Radio Frequency Oscillator O-1032/PRC-47.
fixture are included in section III.
The following tests must be performed using the test
(1) Initial settings and adjustments.
fixture for 0-1032/PRC-47 (fig. 6-9). A schematic
(2) Output, receive mode.
diagram, parts layout photographs, and parts lists for
this test fixture are included in section III.
(3) Distortion.
(1) Initial settings and adjustments.
(4) Selectivity.
(2) Locked oscillator, divider, and output
(5) Response, receive mode.
amplifier performance.
c. Signal Data Translator CV-1377A/PRC-47. The
(3) Locked oscillator Q4 and 500-kHz
following tests are to be performed using the test fixture
amplifier adjustments.
for CV-1377A/PRC-47 (fig. 6-6) together with the
indexing fixture (fig. 6-7). Configuration drawings, parts
(4) Locked oscillator Q8 and 100-kHz
layout photographs, parts lists and schematic diagrams
amplifier adjustments.
for these test fixtures are included in section III.
(5) Final frequency calibration.
(1) Mechanical alignment.
f. Oscillator Control C-4311/PRC-47.
The
(2) 5- to 14-MHz ringer circuit alignment.
following tests must be performed using the test fixture
for the C-4311/PRC-47 (fig. 6-10). A schematic
(3) Oscillator output adjustment.
diagram, parts layout photographs, and parts lists for
(4) Oscillator alignment and tracking ad"
this test fixture are included in section III.
justment
(1) Pulse generator output.
(5) Rf alignment, receive mode.
(2) 1.8- to 0.9-MHz ringer circuit alignment.
(6) Rf alignment, transmit mode.
(3) Crystal oscillator alignment.
(7) Oscillator control isolation amplifier test.
(4) 601- to 600-kHz filter test.
d. Power Supply PP-3518/PRC-47. The following
(5) 550- to 750-kHz filter test.
tests must be performed using the test fixture for PP-
3518/PRC-47 (fig. 6-8). A schematic diagram, parts
(6) Frequency discriminator test.
layout photographs, and parts lists for this test fixture
(7) Error voltage balance adjustment.
are included in section III.
(8) Anti-lock test.
(1) Initial settings and adjustments.
(9) SMO mixers test.
(2) Performance tests, 26.5-volts dc
6-8. Reference Standards
primary power source.
The following chart lists the reference standards
procedures and the expected result or standard value.
6-9
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