Owner`s manual

page 5 – 2
RD-12 / March 99
C O N T R O L R OOM M OD U L E
Control Room Module
(CRD-5)
Module Overview
The CRD-5 module is the RD-12 console operator’s monitor
module. It allows him to listen to the console’s three stereo outputs
(PGM, AUD & UTL) as well as two external stereo line level inputs
brought directly into the module. Source SELECT switching for these
signals is at the top of the module.
The CRD-5 also houses console HEADPHONE and CONTROL
ROOM circuits, which follow the source selection switches.
There are two types of headphone output: the +4dBu balanced output at
the module’s AMP A connector (pre-level control), and two headphone
jacks mounted left and right on the front of the lower mainframe pan, which
are actually outputs from a built-in headphone amplifier. It is this built-in
amp that is controlled by the module’s front panel HEADPHONE level
control.
The CUE master level control is right in the center of the module;
this sets the level of the console’s cue signal.
Whenever CUE is activated elsewhere on the console (stereo line
inputs, the superphone module or for studio talkback) its signal will appear
at the console’s built-in cue speaker mounted in the meter-bridge. Depend-
ing on how the CRD-5 modules has been programmed, cue can also inter-
rupt the control room monitor speakers and/or the console operator’s
headphone. The way Cue interrupts the module’s headphone and CR
outputs is determined by an internal PCB-mounted dipswitch. See “Cue
Interrupt” on next page.
All user wiring to and from the CRD-5 module takes place at
12-pin AMP type connectors mounted directly beneath the module on
the console mainframe’s bottom pan. There are four connectors: A and
B (towards the console meterbridge) handles audio outputs and the
console on-air tally control signals; D (near the console armrest)
accepts the two external source inputs. All audio connections are stereo
line level analog signals (+4dBu balanced).
RD / July 99