Studio Technologies 591 - Manual (Page 4)

Model 58/591 User Guide Issue 1, September 1999
Studio Technologies, Inc. Page 7
Introduction
What This User Guide Covers
This User Guide is designed to assist you
when installing and using the Model 58
Central Controller and the Model 591
Control Console.
StudioComm
This StudioComm system starts with a
Model 591 Control Console, a compact
but comfortable “command center,” that is
designed to reside at the operator’s loca-
tion. Using a single 9-pin cable, a Model
591 connects to a Model 58 Central Con-
troller, which is mounted in a single rack
space.
The Models 58 and 591 were developed
in conjunction with experts in the broad-
cast audio field. The overall goal turned
out to be very straightforward: Provide the
necessary technical performance and
features, while keeping it simple to oper-
ate! Be certain that users won’t have to go
through a long “learning curve” before they
become efficient. Allow the StudioComm
system to be flexible, but not so much as
to hinder the “big picture.” The end result
achieves these goals, providing extensive
capability in a simple-to-operate format.
Model 58 Central Controller
The Model 58 Central Controller is a
single rack-space unit that supports two
output channels. It provides eight main
inputs, of which four are supported by
the Model 591 Control Console. Two
2-channel insert sections allow connection
to external processing equipment. The
2-channel monitor output section is
switched, using electromechanical relays,
to allow connection to two separate loud-
speaker systems. Protection circuitry
provides power-up and power-down pro-
tection for the loudspeakers. A 2-channel
meter output provides a “reference” signal,
and is not affected by the monitor output’s
level-control circuitry.
The main inputs, insert sends and returns,
and monitor outputs are electronically
balanced, while the meter outputs are
unbalanced. Fifteen-turn trim potentiom-
eters are used to precisely calibrate the
main input, insert return, and monitor
output signals. Audio signal connections
are made using three 25-pin D-subminia-
ture connectors. The connectors follow
an industry-standard multi-channel wiring
scheme. A 9-pin D-subminiature connector
is used to connect the Model 58 to the
Model 591 Control Console.
The bypass function allows a line-level
audio source to be passively routed to
the monitor output channels. The bypass
function, along with remote control input 2,
makes it simple for an existing facility to
add monitoring capability, while maintain-
ing its existing resources.
An 8-bit micro-controller provides the
logic “horsepower” for the Model 58. DIP
switches are used to select the Model 58’s
unit ID and operating mode. AC mains
power is connected directly to the Model
58, which is factory selected for 100, 120,
220/240V operation. The internal power
supply utilizes a toroidal mains transformer
for quiet audio operation.
Model 591 Control Console
The Model 591 Control Console is a
compact, self-contained unit designed
to be located at the operator’s position.
It allows fingertip control of all monitoring