Studio Technologies 76DA V.3.01 - Manual (Page 5)

Model 76DA/77 User Guide Issue 2, April 2011
Studio Technologies, Inc. Page 5
for Surround
Introduction
What This User Guide Covers
This User Guide is designed to assist you
when installing and using the Model 76DA
Central Controller and one or more associ-
ated Model 77 or Model 71 Control
Consoles.
Overview
As creating and distributing multi-channel
surround (5.1) and stereo audio material
has become a day-to-day reality, the abil-
ity to simply and effectively monitor these
sources is imperative for recording, post-
production, and broadcast facilities. And
with audio-with-picture applications becom-
ing so prevalent, additional monitoring
challenges have arisen. Studio Technolo-
gies has addressed these needs with the
StudioComm for Surround Model 76DA
Central Controller and the Model 77 and
Model 71 Control Consoles. With digital
audio inputs, digital and analog monitor
outputs, support for multiple user control
surfaces, and an extensive set of operating
resources it’s a simple task to integrate a
monitoring system into virtually any facility.
The carefully selected group of features,
including surround and stereo inputs, con-
figurable input-signal time delay, multiple
pre- and post-fader outputs, downmix and
mute/solo functions, along with a multi-
format sync input, make the system power-
ful yet simple to operate. And by using the
best of contemporary technology, as well
as following rigorous design practices, the
system’s audio quality is excellent.
A StudioComm for Surround system starts
with the Model 77 Control Console. It’s the
system’s “command center” and is designed
to reside at an operator’s location, allowing
fingertip selection of all monitoring func-
tions. Numerous LED indicators provide
complete status information. A 4-digit
numeric display indicates the post-fader
monitor output level in real time. A major
strength of the Model 77 is its ability to
configure, under software control, many
important operating parameters. Intended
for secondary monitoring locations, the
Model 71 Control Console is a compact
user control surface. It provides three of
the most basic functions: a rotary level
control, dim on/off button, and reference
level on/off button.
While many installations will use only one
Model 77 Control Console, up to three
additional Model 77 or Model 71 Control
Consoles can also be connected. This pro-
vides multiple users with full control over a
facility’s monitor system. And to make in-
stallation simple, the Model 76DA provides
power for all connected Model 77 or Model
71 units.
The core of this StudioComm for
Surround system is the Model 76DA
Central Controller. The one-rack-space
unit contains digital audio input, digital
and analog monitor output, processing,
and support circuitry. The Model 76DA
provides two surround (5.1) and three
stereo digital audio inputs. These unbal-
anced digital inputs are AES3id/SMPTE
276M-compliant; sources of this type are
ubiquitous in most post-production and
broadcast environments. The inputs allow
a sample rate of up to 192 kHz and a bit
depth of up to 24 to be directly supported.
Circuitry associated with one of the stereo
inputs provides sample rate conversion
(SRC) capability, allowing a wide range of
digital audio sources to be monitored. Up
to 340 milliseconds of input delay can be
selected to compensate for processing