
page 5 – 3
220 / March 2000
S T U D I O C O N T R O L M O D U L E
Internal Programming Options
There are three user-programmable jumpers (J2, J3, J4) on the SCD-220
that are located at the center of the module’s PCB.
For the purposes of this manual, we will assume you are holding the removed
module upright, component side towards you, with gold-plated card fingers to the
left and the module faceplate to the right. This will enable you to read the control
legends silkscreened next to the programming jumpers.
External Talkback Mute/Dim
There is an independent talkback output from the SCD-220 module (see
upper DB-25 connector page 5-5). By installing jumper J2, you can make
this external talkback output MUTE whenever a studio is muted. You also
have the option of making the output DIM (drop -20dB in level) instead of
MUTE by installing jumper J3.
Jumper 2 mutes external TB whenever Studio is muted*
Jumper 3 makes external TB DIM instead of MUTE
Studio Dim
Input modules controlling studio microphones can be programmed to
MUTE a studio whenever the module is turned on (i.e., it’s microphone is
live). If you wish, you can have a studio DIM (drop -20dB in level) instead
of MUTE:
Jumper 4 causes Studio to DIM instead of MUTE
Note the DIM functions do not affect talkback interrupts, which always
completely replace the studio’s regular monitor feed with the console operator’s
TB signal. Note also if a studio is muted, talkback cannot be heard. However, if a
studio is programmed to DIM instead of MUTE, talkback audio could presumably
make it from the studio monitor speakers to the open studio mic.
Hook-Ups
As stated before, all user wiring to and from the SCD-220 module takes
place at two DB-25 multi-pin connectors mounted at the top of the module.
Upper DB-25 “A” Connector — Audio
Includes studio, studio pre-level, and (mono) talkback outputs. All audio
signals are analog, +4dBu balanced.
Pin 25 – TB Out SH
Pin 24 – TB Out HI
Pin 12 – TB Out LO
Pin 22 – Lt Studio Pre Out SH
Pin 21 – Lt Studio Pre Out HI
Pin 9 – Lt Studio Pre Out LO
Pin 8 – Rt Studio Pre Out SH
Pin 7 – Rt Studio Pre Out HI
Pin 20 – Rt Studio Pre Out LO
*factory default settings
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 ...
Страница 92: ......
Страница 94: ......