Studio Technologies 76DBA V.3.00 - Manual (Page 5)

Model 76DBA/77B User Guide Issue 1, November 2010
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 76DBA
Central Controller and one or more associ-
ated Model 77B 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 chal-
lenges have arisen. Studio Technologies
has addressed these needs with the Studio-
Comm for Surround Model 76DBA Central
Controller and the Model 77B and Model 71
Control Consoles. With digital audio inputs,
digital and analog monitor outputs, Dolby®
E dialnorm support, 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 flexible input source
selection, configurable input-signal time
delay, multiple digital and analog moni-
tor outputs, downmix and solo functions,
dialnorm display, 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. Its unique feature
set makes it especially well suited to meet
the needs of broadcast master control
applications.
A StudioComm for Surround system
starts with the Model 77B Control Con-
sole. 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 or dialnorm
level in real time. A major strength of the
Model 77B is its ability to configure, under
software control, many important operating
parameters. Intended for secondary moni-
toring locations, the Model 71 Control Con-
sole 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 77B Control Console, up to three
additional Model 77B or Model 71 Control
Consoles can also be connected. This
provides multiple users with full control
over a facility’s monitor system. And to
make installation simple, the Model 76DBA
provides power for all connected Model
77B or Model 71 units.
The core of this StudioComm for
Surround system is the Model 76DBA
Central Controller. The one-rack-space
unit contains digital audio input, digital
and analog monitor output, processing,
and support circuitry. The Model 76DBA
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