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Procedure. (cont) - TM-11-6625-564-450092
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TM-11-6625-564-45 Maintenance Kits Electronic Equipment MK-731/ARC-51X Manual
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RADIO SET SIMULATOR TESTS
C2, TM 11-6625-564-45
Control setting
Step
Tat procedure
NO.
Test Equipment
Equipment under test
13
Controls remain as at end
TS-421/U
a. None.
a. Connect 600-ohm input
of 600-ohm/5-ohm
a. OUTPUT AT-
of step 11.
TENUATOR:
matching pad (C, fig.
4-2) to output of
63 dbm.
TS-421/U. Connect
5-ohm output of pad
600 ohms.
to terminals 1 and 3
of HEADSET H-
1,000 cps.
101A/U jack J4 on
d. OUTPUT LEV-
radio set simulator.
EL meter:
Connect a ground bus
+26.8 dbm
between case of audio
(maintain
this level).
b. ME-30(*)/U must read
b. Connect ME-30(*)/U to
ME-30(*)/U
Set to measure
red MAIN AUDIO
3.6 vac minimum.
minimum of
test jack and ground
on test unit.
3.8 vac.
Test unit
Note: Ensure 150-ohm
Controls remain
resistor is connected be-
as at end of
step 12.
tween J7 and J8 on test
unit.
14
a. None.
TS-421/U
Controls remain as at end
a. Disconnect 600-ohm/
a. OUTPUT AT-
of step 11.
5-ohm matching pad.
TENUATOR:
Connect 600-ohm
input of 600-ohm/
0 dbm.
b. All other con-
150-ohm matching
trols remain
pad (D, fig. 4-2) to
as at end of
output of TS-421/
13.
U. Connect 150-
ohm output of pad
to DUM MIC test
ME-30(*)U
jacks on test unit.
Set to measure
minimum of 2
Connect ground bus
between case of pad
vac.
and case of audio
Test unit
MIC SELECT:
Note: Ensure 9.5-ohm
DUM MIC.
resistor is connected be-
tween terminals 2 and 4 of
J4 on radio set simulator.
b. Connect ME-30(*)/U
b. ME-30(*)/U must
between 2 and 4 of
read 1.75 vac minimum.
HEADSET H-101A/
U jack J4 on radio
set simulator.
1. TEST UNIT TESTS
4-7. Test Data Summary
Note: The references in the Step No. column below
Personnel may find it convenient to arrange
are references to the steps in the Step No. column in
the checklists in a manner similar to that be-
low. The data included in the checklists may
then be used as a check against the test results
Tut Indication
the next time the tests are performed.
1b
T/R indicators: On.
2a
Meter: Green hand of scale A
80

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