TM 11-6625-847-45
Switch or control
Setting
5-16. Driver, Discriminator, and Antenna
50 Ω DUMMY LOAD-
50 Ω DUMMY LOAD
Coupler Tray A1A3, Preliminary
COUPLER TERMI-
Switch and Control Settings
NATION WHIP-50 Ω
Switch or control
Setting
DOUBLET switch.
POWER switch ............................... Off
DISCRIMINATOR TEST
1
RELAY CONTROL
1
SELECTOR switch.
switch.
DRIVER section:
ANTENNA COUPLER
BAND SEL switch ..............3.25 MC
section:
TEST SELECTOR
1
CODE switch................................... 1
switch.
5-17. Driver, Discriminator, and Antenna Coupler Tray A1A5, Operational Performance Test
Note. The ME-26(*)/U is the only piece of test equipment required for this test.
Step
Control setting and operation of
No.
Operation of test procedure
equipment under test
Performance standard
1
Remove driver, discriminator,
and antenna coupler tray
A1A5 from case 2, and se-
cure 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 listed
is supplied to the
in paragraph 5-6. Set the
POWER connector
switches and controls on
on the test set.
driver, discriminator, and an-
tenna coupler tray A1A5 to the
settings listed in paragraph
3
Set the POWER switch on the
POWER indicator on test is set
test set to ON. Rotate the
illuminated.
SERV SEL switch to STBY on
the test set.
4
Set the POWER switch on driver, POWER, RELAY 1 and DRIVER
discriminator, and antenna cou-
200 VDC indicators on driver,
pler tray A1A5 to ON.
discriminator, and antenna
coupler tray A1A5 are illumi-
nated.
5
Rotate the DRIVER BAND SEL
Indicator 200 VDC is illumi-
switch from 3.25 MC to 15.5
nated when DRIVER BAND
MC and 29.5 MC.
SEL switch is in a detent set-
ting and is extinguished when
switch is rotating.
6
Connect the ac test
Set the DRIVER TEST SELEC-
Voltage measures 7 0.5 volts
leads of the ME-
TOR switch to position 1.
ac.
26(*)/U to DRIVER
test points HI and
LO.
7
Set the DRIVER TEST SELEC-
TOR switch to position 2. Ad-
just the DC VOLTAGE 200
control on the test set for an
indication of +200 volts dc
on the ME-26(*)/U.
8
Set the DRIVER TEST SELEC-
Voltage measures +27 1 volt
TOR switch to position 4.
dc.
9
Press indicators 1 through 7
Each indicator lights when
to test.
pressed.
10
Disconnect the ME-
Reset all switches and, controls
POWER indicators on the test
26(*)/U.
to the positions listed in para-
set and driver discriminator, and
antenna coupler tray A1A5
are extinguished.
5-12
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