MONO MIC INPUT
page 2 – 6
RD-12 / March 99
Control Connections (AMP C, D)
These include remote on and off, cough, talkback and tally functions.
Note that each function is available twice, once for each source port A and
B, allowing it to follow the module's A/B mic selector switch.
Pin 4 – +5V Digital
Pin 5 – Digital Ground
Pin 6 – Digital Ground
Pin 7 – Remote On B
Pin 8 – Remote Off B AMP C connector
Pin 9 – On Tally B
Pin 10 - Off Tally B
Pin 11 - TB to CR B
Pin 12 - Cough B
Pin 4 – +5V Digital
Pin 5 – Digital Ground
Pin 6 – Digital Ground
Pin 7 – Remote On A
Pin 8 – Remote Off A AMP D connector
Pin 9 – On Tally A
Pin 10 - Off Tally A
Pin 11 - TB to CR A
Pin 12 - Cough A
To Turn the Module ON & OFF from a Remote Location
REMOTE ON — Activates the module’s channel ON switch. Provide
a momentary closure between Pin 7(D) (Remote On A) or Pin 7(C)
(Remote On B) and Digital Ground (Pins 5, 6 of C and D). This will latch
the module ON. (User-supplied momentary contact switch required.)
REMOTE OFF — Activates the module’s channel OFF switch.
Provide a momentary closure between Pin 8(D) (Remote Off A) or Pin
8(C) (Remote Off B) and Digital Ground (Pins 5, 6 of C and D). This will
latch the module OFF. (User-supplied momentary contact switch re-
quired.)
COUGH — Temporarily Mutes the module. Provide a closure be-
tween Pin 12(D) (Cough A) or Pin 12(C) (Cough B) and Digital Ground
(Pins 5, 6 of C and D). This will turn the module OFF. Note this is a non-
latching mode; the module will turn ON again as soon as the closure stops.
(User-supplied momentary contact switch required.)
Key diagram showing
back of typical 12-pin I/O
connector plug, with pin
numbers oriented as they
would be seen while wir-
ing. Beveled corners cor-
respond to PCB mounted
mating sockets.
5 46
8 79
11 1012
2 13
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