Studio Technologies 76D V.2.02 - Manual (Page 16)

Issue 2, June 2009 Model 76D/77 User Guide
Page 16 Studio Technologies, Inc.
for Surround
• Remote Inputs
• Input Delay
• LFE Downmix Mode
• Pre-Fader Surround Monitor Output
Mode
• Channel Pop Solo Mode Offset Levels
The configuration diagrams, located later
in this section, give details on setting each
parameter. An overview of each configu-
rable parameter is provided in the following
paragraphs.
Entering and Exiting the
Configuration Mode
A small button is located on the back of
each Model 77 Control Console, adjacent
to the 9-pin D-sub connector. On any con-
nected Model 77 pressing and holding
this button for two seconds places both
this specific unit and the Model 76D into
their configuration modes. Other con-
nected Model 77 and Model 71 units will
enter a standby mode. When the Model
76D enters its configuration mode it will
immediately mute the monitor outputs as
a speaker protection measure. When a
Model 77 enters the configuration mode
its array of buttons and LEDs no longer
perform their normal functions, instead
they are used to display the operating
parameters and reflect configuration
changes as they are made.
As a user aid, a Model 77 that has entered
the configuration mode will have its mute
and solo LEDs (associated with the chan-
nel mute/solo section) light in an alternat-
ing manner. Other connected Model 77
units will indicate that they have entered
the standby mode by simultaneously flash-
ing their mute and solo LEDs.
To leave the configuration mode and return
the system to normal operation requires
one last action on the Model 77 unit that’s
in its configuration mode. Again press and
hold configure button for two seconds.
Note that configuration changes are stored
in nonvolatile memory only after the con-
figuration mode has been exited.
Our apologies to those of you who find
the configure button a pain to use, but it’s
supposed to be that way! Seriously, the top
of the button is slightly recessed from the
back panel, making it harder to acciden-
tally activate. We didn’t want normal opera-
tion to cease because someone pushed a
Model 77 into a “rats nest” of schedules,
memos from management, and empty
coffee cups! But a firm press with the
fleshy part of an index finger should do
the trick.
There is no problem frequently “tweak-
ing” the system’s operating parameters
to achieve the desired performance. The
configuration data is stored in nonvolatile
memory, which is rated for thousands of
read and write cycles and a retention time
in tens of years. Note that memory inte-
grated circuits are located in the Model
76D Central Controller as well as the
Model 77 and Model 71 Control Consoles.
Only the individual device address is
stored in each Model 77 and Model 71.
All other configuration parameters are
stored in the Model 76D.
Model 77 Device Address
A unique device address must be assigned
to each Model 77 that is connected to a
Model 76D. The choices are A1, A2, A3, or
A4, with the default address being A1. As
most installations will find only one Model
77 utilized, its default setting is appropri-
ate. For installations that use a second,