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220 / March 2000
I N P U T M O D U L E
Pin 14 – TB to CR A
Pin 15 – On Tally A
Pin 16 – Remote On A
Pin 17 – Digital Ground
Pin 18 – +5V Digital
Pin 19 – Digital Ground
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) and
Digital Ground (Pins 4, 17 or 19). 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) and
Digital Ground (Pins 4, 17 or 19). This will latch the module OFF.
(User-supplied momentary contact switch required.)
COUGH — Temporarily Mutes the module. Provide a closure
between Pin 1 (Cough A) and Digital Ground (Pins 4, 17 or 19). 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 IND-220 module is being used for a studio microphone, this
connection allows talkback from that studio to the console operator.
Provide a closure between Pin 14 (TB to CR A) and Digital Ground
(Pins 4, 17 or 19). 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. (Re-
quires 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) and Digital Ground (Pins 4, 17 or 19) 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 (Pin 5 or Pin 18) and the A On Tally port.
In either case, current should not exceed 30 milliamps.
We recommend a series
resistor between the LED
and +5V digital when you
are powering the external
tally from the console; a
value of 220
Ω
(1/4W 5%)
is suggested.
Typical DB-25
connector
9
10
11
12
13
22
23
24
25
6
7
8
19
20
21
4
5
16
17
18
1
2
3
14
15
Содержание 220 Digital Audio Console
Страница 1: ...220 Digital Audio Console TECHNICAL MANUAL March 2000 ...
Страница 62: ...page 6 6 220 March 2000 V I R T U A L D I P S W I T C H Figure 4 Figure 5 220 May 2001 ...
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