Studio Technologies 76B 2012 - Manual (Page 6)

Issue 3, August 2012 Model 76B/77B User Guide
Page 6 Studio Technologies, Inc.
for Surround
are made using one 25-pin D-subminiature
connector. An advanced flash-based
microcontroller integrated circuit provides
the logic “horsepower” for the unit. AC
mains power is connected directly to the
Model 76B, which is factory selected for
100, 120, or 220/240 V operation. The
internal power supply utilizes two toroidal
mains transformers for quiet audio opera-
tion. One 9-pin D-subminiature connector
is used to connect the Model 76B with up
to four Model 77B Control Consoles. A
second 9-pin “D-sub” connector is used to
interface the Dolby E dialnorm data and
remote control signals with the Model 76B.
The Model 77B Control Console is the
“command center” and is designed to
reside at an operator’s location. It allows
fingertip selection of all monitoring func-
tions. Numerous LED indicators provide
complete status information. A 4-digit
numeric display indicates the monitor out-
put 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.
While most installations will use only one
Model 77B Control Console, up to four
can be connected to a Model 76B Central
Controller. This provides multiple users
with full control over a facilities’ monitor
system. The Model 76B can provide power
for the first two Model 77B units while an
external 12 volt DC source is required for
a third and fourth unit. The interconnecting
cables use 9-pin D-subminiature connec-
tors to carry RS-485 data and DC power.
Additional Details
The Model 77B provides four buttons and
associated LEDs for selecting the input
source to be monitored. The buttons are
designed such that up to six unique input
choices are available. Using the Model
77B’s configuration mode, each of the six
input choices can be configured from the
Figure 1. Model 76B Central Controller Front Panel
Figure 2. Model 76B Central Controller Back Panel
Power
present
LED
Control console
to/from data
active LED
Stereo Input C
connection
Analog monitor
output connections
To/from
Model 77B
Control
Console
AC mains
input connection
RS-485 and
remote control
inputs
Surround Input B
connections
Surround Input A
connections
Stereo Input A and
Stereo Input B
connections
Metadata
active
LED