Test Fixture for Radio Frequency Oscillator 0-1032/PRC-47

TM 11-5820-509-35

circuit and the +20V ON-OFF switch is in the ON

6-21. Test Fixture for Radio Frequency

position.

Oscillator 0-1032/PRC-47

(fig. 7-19)

(3) +20V 1/4 AMP fuse. This protective

device is connected to the +20 volts dc primary power

circuit to protect it from overload.

a. The test fixture for Radio Frequency Oscillator

(4) +20 V CURRENT meter. This 0 - 60

0-1032JPRC-47 contains all switches, jacks, meter and

milliammeter indicates the amount of current being

lamps necessary to electrically test and adjust the

drawn by the module under test.

module without providing a complete AN/PRC-47 Radio

Set. Power for the test fixture and the module under

(5) PUSH TO READ button. This shunting

test is provided externally and is connected to the test

switch is opened when pressed to permit the +20 V

fixture by a specially fabricated cable attached to power

CURRENT meter to indicate the module current drain.

connector J2 at the rear of the test fixture.

(6) Coaxial connectors are provided for the

b. The operating controls on the front panel of the

connection of signal leads and test equipment and these

test fixture (fig. 6-9) perform the following functions:

are self-explanatory.

(1) +20V ON-OFF switch. This toggle switch

c. The piece parts required for fabrication of the

controls the +20 volts dc primary power circuit to the

test fixture are listed in the following chart and

module under test.

suggested parts placement is shown in figure 6-26.

Schematic diagram {fig. 7-19) illustrates the internal

(2) +20V lamp. This indicator is lit when

circuit of the test fixture.

power is connected to the +20 volts dc primary power

6-54