Studio Technologies 76D V.2.02 - Manual (Page 5)

Model 76D/77 User Guide Issue 2, June 2009
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
76D Central Controller and one or more
associated Model 77 or Model 71 Control
Consoles.
Overview
As creating and distributing multi-channel
surround (5.1) and stereo (2-channel) audio
material has become a day-to-day reality,
the ability to simply and effectively monitor
these sources is imperative for recording,
post-production, and broadcast facilities.
And with an “all-digital” world now upon
us, additional monitoring challenges have
arisen. Studio Technologies has addressed
these needs with the StudioComm for Sur-
round Model 76D Central Controller and the
Model 77 and Model 71 Control Consoles.
With the all-digital audio inputs and outputs,
support for multiple user control surfaces,
and extensive set of operating resources
it’s a simple task to integrate a monitoring
system into virtually any facility. The care-
fully selected group of features, including
surround and stereo inputs, multiple pre-
and post-fader outputs, downmix and mute/
solo functions, along with a multi-format
sync input, make the system powerful yet
simple to operate. And by using the best of
contemporary technology, as well as follow-
ing rigorous design practices, the system’s
audio quality is excellent.
An all-digital 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 functions. Numerous LED
indicators provide complete status informa-
tion. 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. In-
tended for secondary monitoring locations,
the Model 71 Control Console is a com-
pact user control surface. It provides three
of the most basic functions: a level control,
dim, and reference level.
While many installations will use only one
Model 77 Control Console, up to a total of
four Model 77 or Model 71 Control Con-
soles can be connected to a Model 76D
Central Controller. This provides multiple
users with full control over a facility’s moni-
tor system. Making installation simple, the
Model 76D provides power for all connect-
ed Model 77 or Model 71 units.
The core of this StudioComm for Surround
system is the Model 76D Central Control-
ler. The one-rack-space unit contains all
the audio input, output, processing, and
support circuitry. The Model 76D provides
two surround (5.1) and three stereo audio
inputs. These unbalanced 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) capabil-
ity, allowing a wide range of digital audio
source to be monitored. Up to 340 milli-
seconds of input delay can be selected to
compensate for processing delays in an
associated video path. For synchronization
with a master timing reference the Model
76D allows direct connection of a word