Studio Technologies 76DBA V.3.00 - Manual (Page 37)

Model 76DBA/77B User Guide Issue 1, November 2010
Studio Technologies, Inc. Page 37
for Surround
Operation
Now that you’ve installed and configured
the system, you’re ready to go. You should
find operation very easy. However, taking
time to study this section of the guide may
prove valuable.
Upon power up the system will return to
the last operating condition, including the
selected source, downmix modes, etc.
As a precaution, however, the post-fader
surround digital and analog monitor output
levels will always return to their minimum
value. The rotary level control or the refer-
ence level button must then be used to
return the system to the desired monitor
output level.
Model 76DBA Central
Controller
The Model 76DBA’s front panel contains
three LEDs. The control console status
LED will light whenever the Model 76DBA
is communicating with the one or more
connected Model 77B or Model 71 units.
A flashing control console status LED will
indicate that the DC power output support-
ing the control consoles is in a short-circuit
or over-current condition. The control con-
sole status LED will not light when a Model
77B is in the configuration mode or when
the Model 77B is going through its power-
up sequence.
The metadata status LED will light when-
ever an active metadata signal has been
connected and valid metadata sync word
information is being received.
The sync status LED will light whenever
a valid timing reference signal is being
received by the Model 76DBA. A flashing
sync status LED indicates that a valid sync
signal is not being received.
Control Consoles
StudioComm for Surround operation is
controlled using the up to four Model 77B
or Model 71 Control Consoles that have
been connected. Two system functions can
also be controlled by means of the remote
control inputs.
Model 77B Control Console
To make things easy to describe, the
Model 77B’s operator functions are di-
vided into seven main groups: input source
selection, downmix, monitor output general
functions, channel solo, auxiliary stereo
monitor outputs, display and display mode,
and remote control inputs.
Any change made to any one Model 77B
unit will be reflected in the LEDs and dis-
plays on all the connected units. Note that
all control consoles function simultane-
ously—there is no priority of one unit over
the others.
Input Source Selection
Four input select buttons work together
to allow pre- and post-fader monitoring of
up to six input source configurations. One
button serves as a group select while the
other three select the specific input. The
group select button is used to select the
active group, alternating between groups
1-3 or 4-6. Two LEDs are associated with
this button and indicate which group is
active. The other three buttons are used to
select the specific input source to be moni-
tored. The choices are 1/4, 2/5, and 3/6,
with the active input following the status of
the group select function. LEDs are associ-
ated with the input select buttons and in-
dicate which is active. Note that the Model
77B “remembers” which specific input was
last selected for each group, so changing