(b.) MIC. Enables either control
wheel POS IDENT switch to activate transmission
of ident signal from transponder.
(c.) OUT. Disallows outgoing signal.
MODE 4 reply indicator light. Illumi-
nates to indicate a reply has been made to a valid
Mode 4 interrogation.
MODE 4 AUDIO OUT switch. Selects
monitor mode for mode 4 operation.
AUDIO. Enables sound and sight
monitoring of mode 4 operation.
(b.) LIGHT. Enables monitoring
REPLY indicator for mode 4 operation.
(12.) MODE 3/A code selectors. Select
desired reply codes for mode 3/A operation.
MODE 1 code selectors. Select desired
reply codes for mode 1 operation.
(14.) MODE 4 TEST-ON-OUT switch.
Selects test mode of Mode 4 operation.
(a.) TEST. Activates built-in-test of
mode 4 operation.
ON. Activates mode 4 operation.
(c.) OUT. Disables mode 4 opera-
(15.) MODE 4 code control. Selects preset
mode 4 code.
(16.) 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
MODE 2 code selectors. Select desired
reply codes for Mode 2 operation. The cover over
mode select switches must be slid forward to display
the selected mode 2 code.
(18.) POS IDENT pushbutton (control
wheels, jig. 2-17). When pressed, activates transpon-
der identification reply.
Transponder - Normal Operation.
Turn-on procedure: MASTER switch -
STBY. Depending on the type of receiver installed,
the TEST/MON NO GO indicator may illuminate.
Disregard this signal.
(2.) Test procedure:
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).
Allow set two minutes to warm
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
Lamp indicators - Operate press-
M-1 switch -
Hold in TEST.
Observe that no indicator lights
M-1 switch - Return to ON.
Repeat steps 4 and 5 for the M-2,
M-3/A and M-C mode switches.
MASTER control - NORM.
MODE 4 code control - A. Set a
code in the external computer.
MODE 4 AUDIO OUT switch -
(3.) Modes 1, 2, 3/A, and/or 4 operating
If the external security computer is not
installed, a NO GO light will illuminate
any time the Mode 4 switch is moved out
of the OFF position.
MASTER control - NORM.
2. M-1, M-2, M-3/A, and/or MODE
4 ON-OUT switches - ON. Actu-
ate only those switches corre-
sponding to the required codes.
The remaining switches should be
left in the OUT position.