page 5 – 2
D-75 / Sep 2004
CONTROL ROOM MODULE
Control Room Module
(CR-75)
Module Overview
The CR-75 module is the D-75 console operator’s monitor module. It
allows the operator to listen to the console’s four stereo outputs (PGM,
AUD, AUX, & UTIL) and two external stereo line level inputs brought
directly into the module.
The CUE master level control sets the level of the console’s cue signal.
Whenever CUE is activated elsewhere on the console (stereo line inputs or the
superphone module) its signal will appear at the console’s built-in cue speaker
mounted in the meterbridge. Depending on how the CR-75 module has been
programmed, cue can also interrupt the control room monitor speakers and the
headphones. The way Cue interrupts the control room and headphone outputs is
determined by PCB-mounted dipswitch. See “Cue Interrupt” on page 5-3.
The CR-75 module also houses control room and headphone monitor
circuits, which follow the source selection switches:
CONTROL ROOM (CR)—a dedicated output designed to drive a
separate, user provided power amp/speaker system in the main control
room;
HEADPHONE (HDPN)—an additional output (w/built-in power amp)
that drives the console operator’s headphones. There are two types of
headphone output: the +4dBu balanced output at the module’s right
DB-25 connector (A), and the headphone jack mounted in the right-hand
corner of the console, which is actually the output from a built-in
headphone amplifier.
All user wiring to and from the CR-75 module takes place at the
DB-25 multi-pin connectors mounted at the top of the module and located
underneath the hinged meterbridge. There are two connectors: the left one
accepts the two stereo analog external inputs; the right one handles the
control room, headphone pre, and stereo cue pre outputs, and the air tally
relay. All audio connections are stereo line level analog signals. A pinout
drawing on page 5-5 shows all wiring connections at a glance.
To Next Page
Loading...
