TM 1-1510-223-10
Figure 3-34.
Transponder Control Panel
(17) M-C, M-3A, M-2, and M-1 switches.
Select test or reply mode of respective codes.
(a)
TEST. Activates self-test of
selected code. Transponder can also reply.
(b)
ON. Activates normal operation.
(c)
OUT. Deactivates operation of
selected code.
(18) POS
IDENT
pushbutton
(control
wheels, fig. 2-22). When pressed, activates
transponder identification reply.
c.
Transponder - Normal Operation.
(1)
Turn-on procedure: MASTER switch -
STBY. Depending on type of receiver installed,
TEST/MON NO GO indicator may illuminate. Disregard
this signal.
(2)
Test procedure:
NOTE
Make no checks with the master switch in
EMER, or with M-3/A codes 7600 or 7700
without first obtaining authorization from the
interrogating station(s).
1.
Allow set two minutes to warm up.
2.
Select codes assigned for use in modes
1 and 3/A by depressing and releasing
the pushbutton for each switch until the
desired number appears in the proper
window.
3.
Lamp indicators - Operate press-to-test
feature.
4.
M-1 switch - Hold in TEST. Observe no
annunciators illuminate.
5.
M-1 switch - Return to ON.
6.
Repeat steps 4 and 5 for the M-2, M-3/A
and M-C mode switches.
7.
MASTER control - NORM.
8.
MODE 4 code control - A Set a code in
external computer.
9.
MODE 4 AUDIO OUT switch - OUT.
3-87
