Wheatstone D-8000, Техническое руководство

Страница: 51 / 169

page 6 – 2
D-8000 / Jan 2003
S T U D I O C O N T R O L M O D U L E
Studio Control Module
(SCD-8)
Module Overview
The SCD-8 module is similar to the CRD-8 control room
module, only it controls monitor audio and talkback to two
additional (“non-control room”) studios. The monitor signal be-
ing sent to these two studios following the source select switching
at the top of the module (this switching is identical to the control
room module’s and includes the console’s four stereo outputs
(PGM, AUD, AUX & UTL) as well as two external stereo line
level inputs brought directly into the module.
There can be two modules per console to control a total of four
studios.
Each studio has its own level control and talkback switch.
When a talkback switch is pressed (they are momentary action) the
console operator’s microphone signal will interrupt the regular
monitor signals being sent to the studio in question. The
TALKBACK master level control in the center of the module sets
the talkback output and the level of the talkback interrupt signal.
All user wiring to and from the SCD-8 module takes place at
DB-25 multi-pin connectors mounted directly beneath the module
on the console mainframe’s bottom pan. There are two connec-
tors: the upper one (towards the console meterbridge) handles
external talkback out and regular studio monitor outputs, plus the
console’s Tally 2 and Tally 3 control signals; the lower connector
(near the console armrest) accepts the module’s two external
source inputs. It also outputs two additional pre-level control
studio outputs. All audio connections are (+4dBu balanced) ana-
log signals. A pinout drawing on page 6-6 shows all wiring
connections at a glance.
STANDARD
OPTIONAL