TM 11-6625-828-45
CHAPTER 5
DEPOT OVERHAUL STANDARDS
5-1.
General
5-2.
Test Facilities Required
The tests outlined herein are designed to measure the
The following equipment and test equipment will be
performance capability of a repaired equipment.
employed in determining compliance with these tests.
Equipment that meets the minimum standards stated in
the tests will furnish satisfactory operation, equivalent to
a. Equipment.
that of new equipment.
NOTE
The following equipment must meet
established
new
equipment
specifications.
Equipment
Technical Manual
Common name
Radio Set, Receiving AN/ARN-30E
TM 11-5826-215-12
Radio Set
b.
Test Equipment.
Technical Manual
Common Name
Test equipment
Ac voltmeter
------------------------------
Ac Voltmeter ME-93/U
Audio signal generator
------------------------------
Audio Signal Generator, (Collins Radio Model 479S-3)
Course checker
TM 11-6625-609-14
Test Set, Signal Generator AN/GSM-21
Electronic counter
TM 11-6625-700-10
Digital Readout Electronic Counter AN/USM-207
Vacuum tube voltmeter
TM 11-6625-320-12
Voltmeter Electronic ME-30E/U
Filter unit
------------------------------
Filter Unit, Type F-12 (Aircraft Radio Corp)
------------------------------
attenuator
TM 11-6625-366-15
Multimeter TS-352B/U*
Multimeter
TM 11-6625-535-15-1
Oscilloscope AN/USM-140C or AN/USM-281A
------------------------------
Resistance Bridge ZM-4/U*
Decade resistance box
TM 11-6625-508-10
RF Signal Generator AN/USM-44
RF signal generator
TM 11-6625-524-14
Electronic Voltmeter AN/URM-145
Electronic voltmeter
and
TM 11-6625-524-15-1
------------------------------
Variac
Variable Power Transformer CN-16A/U
TM 11-6625-654-14
Multimeter
* Or Multimeter AN/USM-223
c. Preliminary Inspection. Prior to performing
5-3.
Test Procedure
inspection procedures, make the following preliminary
a. Meter Zero Set.
With the test set
check with the test set removed from the center section
connected to a variac-controlled 115-volt, 60-cycle power
of the case:
source, set the test set MOSULATION switch to 30~ and
(1) Set the test set POWER-STANDBY
adjust the %M meter ZERO SET knob until the meter
switch to STANDBY and connect the test set to the
pointer indicates at the zero set line.
Set the
variac-controlled 115-volt, 60-cycle power source.
MODULATION switch to EXT position and adjust the RF
(2) Check that space heater resistors
meter ZERO SET knob until the meter pointer indicates
R193, R194, and R195 warm up.
at the zero set line.
(3) Set the test set POWER STANDBY
switch to POWER and check that the red indicator lamp
b. RF Unit Test. Check the test set RF unit
on the front panel lights and that the tone generator runs
operation as follows:
in clockwise direction as viewed from the front panel
and
(1) Install a 108-me test crystal in crystal
socket "A" and a 182-mc crystal in socket "B."
Change 1 5-1
