TM 11-6625-847-45
5-15. Converter and Control Tray A1A4, Operational Performance Test
Note. The ME-26(*)/U is the only test equipment required for this test.
Step
Control setting and operation of
No.
Operation of test procedure
equipment under test
Performance standard
1
Remove converter and control
tray A1A4 from case 2, and
secure it to the test set.
2
Make sure that +27-
Set the switches and controls on
volt dc primary power
the test set to the settings
is supplied to the
listed in paragraph 5-6. Set
POWER connector
the switches and controls on
on the test set.
converter and control tray
A1A4 to settings listed in
Set the POWER switch on the
POWER indicators on the test
3
test set to ON. Rotate the
set and converter and control
SERV SEL switch to STBY.
tray A1A4 are illuminated.
Set the POWER switch on
Indicator lights B-5
converter and control tray
and C-1 are dimly lit.
A1A4 to ON.
4
Connect the ME-
Adjust the test set DC VOLTAGE
26(*)/U to the test
20 control to obtain an indi-
set DC VOLTAGE
cation of 20 volts dc on the
+20 test point.
ME-26(*)/U.
5
Press indicators A1 through A3,
Each indicator lights when
B1 through B5, and C1 through
pressed.
C5 to test them.
6
Connect the dc leads
Rotate the PA METER TEST
Voltage varies from +3.6 to -4
of the ME-26(*)/U
ANTENNA LOAD/TUNE
volts dc.
across the PA METER
control from fully counter-
TEST ANTENNA
clockwise to fully clockwise.
LOAD/TUNE test
point and ground.
7
Connect the dc test leads
Rotate the PA METER TEST
Voltage varies from 0 to +1.7
of the ME-26(*)/U
ALC METER control from
volts dc.
across the PA METER
fully counterclockwise to fully
TEST ALC METER
clockwise.
test point and ground.
8
Connect the dc test leads
Rotate the PA METER TEST
Voltage varies from 0 to 22 volts
of the ME-26(*)/U
GRID DRIVE control from
dc
across the PA METER
fully counterclockwise to
TEST GRID DRIVE
fully clockwise.
test point and ground.
9
Connect the dc test
Voltage measures +27 1 volt
leads of the ME-
dc.
26(*)/U across the
INPUT CURRENT LO
test point and ground.
10
Press the INPUT CURRENT
Voltage measures 0 volt dc.
test switch.
11
Disconnect the ME-
Reset all switches and controls to
POWER indicators on test set
26(*)/U.
settings listed in paragraphs
A2 and tray A1A4 are extin-
5-6 and 5-14.
guished.
Change 1 5-11
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