Section III. SPECIAL TEST FIXTURES

TM 11-5820-509-35

(23) Repeat step (4) and adjust the output

(12) Repeat step (6). The mixer output shall

frequency of signal generator no. 2 to 8.55 MHz at an

be 1.5 0.4 volts peak-to-peak.

output level of 3.6 volts peak-to-peak on the

(13) Repeat step (2) and adjust the output

oscilloscope.

frequency of signal generator no. 1 to 8.0 MHz at an

(24) Repeat step (6) The mixer output shall be

output level of 1.5 volts peak-to-peak on the

1.5 0.4 volts peak-to-peak.

oscilloscope.

(25) Repeat step (2) and adjust the output

(14) Repeat step (4) and adjust the output

frequency of signal generator no. 1 to 12.0 MHz at an

frequency of signal generator no. 2 to 5.55 MHz at an

output level of 1.2 volts peak-to-pea_ on the

output level of 6.8 volts peak-to-peak on the

oscilloscope.

(26) Repeat step (4) and adjust the output

(15) Repeat step (6). The mixer output shall

frequency of signal generator no. 2 to 9.55 MHz at an

be 1.5 0.4 volts peak-to-peak.

output level of 3.7 volts peak-to-peak on the

(16) Repeat step (2) and adjust the output

oscilloscope.

frequency of signal generator no. 1 to 9.0 MHz at an

(27) Repeat step (6). The mixer output shall

output level of 1.4 volts peak-to-peak on the

be 1.5 0.4 volts peak-to-peak.

oscilloscope.

(28) Repeat step (2) and adjust the output

(17) Repeat step (4) and adjust the output

frequency of signal generator no. 1 to 13.0 MHz at an

frequency of signal generator no. 2 to 6.55 MHz at an

output level of 1.2 volts peak-to-peak on the

output level of 8.0 volts peak-to-peak on the

oscilloscope.

(29) Repeat step (4) and adjust the output

(18) Repeat step (6). The mixer output shall

frequency of signal generator no. 2 to 10.56 MHz at an

be 1.5 0.4 volts peak-to-peak.

output level of 3.4 volts peak-to-peak on the

(19) Repeat step (2) and adjust the output

oscilloscope.

frequency of signal generator no. 1 to 10.0 MHz at an

(30) Repeat step (6). The mixer output shall

output level of 1.3 volts peak-to-peak on the

be 1.5 0.4 volts peak-to-peak.

oscilloscope.

(31) Repeat step (2) and adjust the output

(20) Repeat step (4) and adjust the output

frequency of signal generator no. 1 to 14.0 MHz at an

frequency of signal generator no. 2 to 7.55 MHz at an

output level of 1.1 volts peak-to-peak on the

output level of 4.3 volts peak-to-peak on the

oscilloscope.

(32) Repeat step (4) and adjust the output

(21) Repeat step (6). The mixer output shall

frequency of signal generator no. 2 to 11.55 MHz at an

be 1.5 + 0.4 volts peak-to-peak.

output level of 3.3 volts peak-to-peak on the

(22) Repeat step (2) and adjust the output

oscilloscope.

frequency of signal generator no. 1 to 11.0 MHz at an

(33) Repeat step (6). The mixer output shall

output level of 1.3 volts peak-to-peak on the

be 1 5 0 4 volts peak-to-peak

oscilloscope.

Section III. SPECIAL TEST FIXTURES

6-16. General

Amplifier AM-3506/PRC-47 contains all switches, jacks,

This section describes the special test fixtures required

lamps and meters necessary to electrically test and

for performance of the reference standards tests

adjust the module without providing a complete

described in the preceding sections of this chapter.

AN/PRC-47 Radio Set. Power for the test fixture and

Information is included that permits fabrication of the

the module under test is provided externally and

individual test fixtures from readily available parts, and

connected to the test fixture by a specially fabricated

includes parts lists, schematic diagrams and parts

cable attached to power connector J2 at the rear of the

location photographs.

test fixture.

6-17. Test Fixture for Audio Frequency Amplifier

b. The operating controls on the front panel of the

AM-3506JPRC-47.

test fixture (fig. 6-4) perform the following functions:

(fig. 7-15)

(1) POWER ON-OFF switch. This toggle

a. The test fixture for Audio Frequency

switch controls the +24 volts dc and -7 volts dc

6-37