(b) LIGHT. Enables monitoring REPLY
indicator for mode 4 operation.
(c) OUT. Deactivates monitor mode.
MODE 3/A code selectors. Select
desired reply codes for mode 3/A operation.
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.
MODE 1 code selectors. Select desired
reply codes for mode 1 operation.
(15) MODE 4 TEST-ON-OUT switch. Selects
test mode of Mode 4 operation.
(a) TEST. Activates built-in-test of mode 4
(b) ON. Activates mode 4 operation.
(c) OUT. Disables mode 4 operation.
MODE 4 code control. Selects preset
mode 4 code.
(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
pressed, activates transponder identification reply.
Transponder - Normal Operation.
(1) Turn-on procedure: MASTER switch -
STBY. Depending on the type of receiver installed, the
TEST/MON NO GO indicator may illuminate. Disregard
(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
Allow set two minutes to warm up.
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.
Lamp indicators - Operate press-to-test feature.
M-1 switch - Hold in TEST. Observe that no
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
MODE 4 AUDIO OUT switch - OUT.
(3) Modes 1, 2, 3/A, and/or 4 operating
If the external security computer is
not installed, a NO GO annunciator
will illuminate any time the Mode 4
switch is moved out of the OFF
MASTER control - NORM.
M-1, M-2, M-3/A, and/or MODE 4 ON-OUT
switches - ON. actuate only those switches
corresponding to the required codes. The
remaining switches should be left in the OUT
MODE 1 code selectors - Set (if applicable).
MODE 3/A code selectors - Set (if applicable).
MODE 4 code control - Set (if required).
determine when transponder set is replying to a SIF
MODE 4 AUDIO OUT switch - Set (as required
to monitor Mode 4 interrogations and replies).
MODE 4 audio and/or indicator - Listen