page 2 – 5
D-5000 / May 2000
MONO MIC INPUT
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 16 (Remote On A) or Pin 22 (Remote
On B) and Digital Ground (Pins 4, 10, 17 or 23). 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 3 (Remote Off A) or Pin 9
(Remote Off B) and Digital Ground (Pins 4, 10, 17 or 23). This will latch
the module OFF. (User-supplied momentary contact switch required.)
COUGH — Temporarily Mutes the module. Provide a closure be-
tween Pin 1 (Cough A) or Pin 7 (Cough B) and Digital Ground (Pins 4, 10,
17 or 23). 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.)
Talkback to Control Room
If an MMD-600 module is being used for a studio microphone, these
ports allow talkback from that studio to the console operator. Provide a
closure between Pin 14 (TB to CR A) or Pin 20 (TB to CR B) and Digital
Ground (Pins 4, 10, 17 or 23). This will cause two things to happen: (1) the
module’s pre fader signal is sent to the console’s Cue bus, where it may be
heard by the console operator, and (2) the module’s Cough function is
activated, muting the module’s post fader signal and preventing the TB
signal from going out over other assigned busses (i.e., “live”). This non-
latching condition continues until the closure is released. (Requires user-
supplied momentary action TALKBACK switch at the studio microphone
location.)
On Tally
Lets the module’s channel ON switch control an on-air light or other
“microphone on” indicator at a remote location. This control function
provides a continuous closure (open collector) between Pin 15 (On Tally
A) or Pin 21 (On Tally B) and Digital Ground (Pins 4, 10, 17 or 23)
whenever the module is ON.
This closure can be used to control an externally powered tally light
that requires a continuous closure to function. Or an external tally light
(i.e., LED) can be powered from the input module by connecting the
external LED to +5V Digital (Pins 5 or 11) and the A or B On Tally ports.
In either case, current should not exceed 30 milliamps.
Off Tally
Identical to “On Tally” (preceding), only this tally is active when the
module is OFF. Off Tally A is Pin 2; Off Tally B is Pin 8.
We recommend a series
resistor between the LED
and +5V digital when you
are powering the external
tally from the console; a
value of 220Ω (1/4W 5%)
is suggested.
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