Studio Technologies 78 2004 - Manual (Page 15)

Model 78/79 User Guide Issue 5, January 2004
Studio Technologies, Inc. Page 15
for Surround
routed to their respective monitor outputs.
Will the unused input channels pick up
significant noise or hum? Unlikely, but why
take a chance at having a problem. Simply
use the input channels active configuration
to disable the two unused channels. Now
when Surround B is selected, only the rel-
evant channels are selected for monitoring.
Note that when a channel associated
with an input is disabled, the input routing
circuitry, under software control, no longer
selects it, but the corresponding monitor
output channel does not mute. With our
example, when selecting Surround B, our
mythical 5.1 source, all monitor output
channels will remain active, but the input
routing circuitry won’t select the BL and
BR inputs. While to some people this might
seem confusing and possibly a design
fault, it was implemented this way because
the StudioComm system allows both
inputs to be simultaneously selected for
monitoring; a 7.1 source might be selected
at the same time as a 5.1 source. Muting
the outputs simply would not do!
A special mode has been included to
allow an input to be disabled from being
accessed by the operator. This might be
useful, for example, when Surround B is
not connected to a source, and has no
valid reason to be selected. This might
also be useful when connecting a special
source, such as a house “tie line” or router
output, that shouldn’t normally be acces-
sible. To disable an input is simple, just
disable all eight channels associated with
it. To confirm that an input has been dis-
abled, all LEDs associated with that input
will flash on and off. Once the Model 79 is
returned to the normal operating mode, the
disabled input cannot be selected.
Solo Mode
Solo operation can be configured to sat-
isfy operator preference. The additive solo
mode matches the functionality found in
many recording consoles. In this mode,
multiple channels can be simultaneously
“soloed,” allowing those channels to be
monitored at the same time. Other opera-
tors may prefer the exclusive solo mode.
When this mode is selected, only one
channel can be selected for solo at a
time. The additive solo mode is the default
setting.
Power-up Mute All
By default, upon application of AC mains
power the monitor outputs remain muted
after the system’s power-up sequence
has been performed. Then an operator
must manually press the mute all button
to enable the monitor outputs. There may
be cases where it’s desirable to have the
monitor output channels return to their
respective states as left at the time of the
previous loss of AC mains power. This
would allow normal operation to automati-
cally resume.
Level Control Response
As expected, the level control on the Model
79 Control Console is used to adjust the
output level of the monitor output channels.
The amount of rotation required to reach a
specific level can be selected. This can be
described as allowing the “curve” or “taper”
of the level control to be configured. Two
choices are available: true logarithmic and
modified logarithmic. In the true logarithmic
mode the level control provides a precise
logarithmic performance over its entire
rotation, e.g., the output level is half of its
maximum when the control is set at its
midpoint, i.e., 50% of its “travel.” In the