Studio Technologies 780-03 V.4.15 - Manual (Page 18)

Issue 1, April 2015 Model 780-03/790 User Guide
Page 18 Studio Technologies, Inc.
for Surround
To leave the configuration mode and return
the system to normal operation requires
a final action to be made. On the Model
790 unit that’s in its configuration mode
press and hold its configure button for two
seconds. At this time any configuration
changes will be stored in nonvolatile mem-
ory and normal operation, using the stored
configuration settings, will resume.
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 accidental activa-
tion unlikely. We didn’t want normal opera-
tion to cease because someone pushed a
Model 790 into a “rats nest” of schedules,
memos from management, and empty cof-
fee 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 StudioComm system’s operating
parameters to achieve the desired perfor-
mance. The configuration data is stored
in nonvolatile memory, which is rated for
many thousands of read and write cycles
and a retention time in tens of years. Note
that memory integrated circuits are located
in the Model 780-03 Central Controller as
well as the Model 790 and Model 71 Con-
trol Consoles. Only the individual device
addresses are stored in each Model 790
and Model 71. All other configuration pa-
rameters are stored in the Model 780-03.
Model 790 Device Address
A unique device address must be assigned
to each Model 790 Control Console that is
connected to a Model 780-03. The address
choices are A1, A2, A3, or A4, with the
default address being A1. As most installa-
tions will utilize only one Model 790 its
default setting is appropriate. For installa-
tions that use two, three, or four Model 790
units it’s important that each be configured
with a unique device address. Problems
will occur if more than one unit has the
same address. It’s important to highlight
the fact that the device address is the only
setting that must be done on each individu-
al Model 790 unit. All other settings can be
made on any one of the connected Model
790 units. Be sure that any selected ad-
dress does not conflict with addresses that
are, or will be, assigned to Model 71 units.
Stereo Input Sample Rate
Converter
Circuitry associated with the stereo input
can provide sample rate conversion (SRC)
for digital audio signals connected to
that input. The acceptable input range for
sample rate conversion is very wide, but
is dependent upon the output sample rate.
With an output sample rate of 48 kHz any
signal with a sample rate over a range of 8
to 216 kHz can be properly monitored by
the system. This capability can be espe-
cially useful with signals that are not syn-
chronized with respect to the other signals
that are connected to the Model 780-03,
even if their sample rates are identical. The
only compromise is that the SRC process
adds a fixed input-to-output (group) delay
of approximately 1 millisecond, a value
that shouldn’t impact most applications.
By default SRC is enabled and it’s recom-
mended that it remains that way. However
there might be cases where this resource
isn’t desired and it can be disabled.
Bass Management
The Model 780-03 incorporates flexible
and sonically excellent bass management
capabilities which can impact both the