Studio Technologies 76DA V.4.02 - Manual (Page 40)

Issue 4, March 2013 Model 76DA/77 User Guide
Page 40 Studio Technologies, Inc.
for Surround
Surround and Stereo Digital and Analog
Outputs
The surround/stereo function allows
selection between two different loudspeaker
systems. When the surround output is se-
lected the six post-fader surround channels
associated with both the digital and analog
monitor outputs are active. The channels
associated with the post-fader digital and
analog stereo monitor outputs are muted.
When the stereo output is selected the left
(L) and right (R) channels associated with
both the post-fader digital and analog ste-
reo monitor outputs become active; the six
channels associated with the post-fader
surround digital and analog monitor outputs
mute.
Remember that the Model 77 Control Con-
sole can be configured to disable the sur-
round/stereo button. If the button is pressed
and the post-fader stereo monitor outputs
are not selected, this must be the case!
Display Current Sample Rate
The surround/stereo monitor output select
button is also used to display the system’s
current sample rate value. Pressing and
holding the surround/stereo button will
cause the current sample rate value to
be displayed: 32.0, 44.1, 48.0, 88.2, 96.0,
176.4, or 192.0. This can be useful during
troubleshooting or just for general interest.
Once the button is released normal display
operation will resume.
Reference Level
The reference level button sets the post-
fader surround and stereo digital and ana-
log monitor output levels to a preset value.
Technical personnel, using a sound-pres-
sure-level (SPL) meter and precision signal
source, should have set this level to meet
the requirements of the specific monitoring
environment. The LED associated with the
reference level button will light whenever
the function is active. The 4-digit display
will indicate the reference output level.
Note that the system’s default reference
level is –60.0 dB so “out of the box” the
Model 77 will display –60.0 when reference
level mode is enabled.
How the rotary level control functions
whenever the reference level mode is
active depends on a configuration setting.
If the auto reference level off function is
disabled turning the rotary level control will
have no impact on the reference level func-
tion; it will remain active. If the auto refer-
ence level off function has been enabled
turning the rotary level control will cause
the reference level function to automati-
cally turn off.
The LED associated with the reference
level button can also serve as a calibra-
tion aid. If the reference level mode is not
active, whenever the post-fader surround
or stereo digital and analog monitor out-
put levels are precisely the same as that
stored for the reference value the refer-
ence level LED will flash. This exact level
can be reached through the use of the
rotary level control, either by itself or
through the setting of the rotary level con-
trol in conjunction with the dim function.
Whatever path the post-fader surround
and stereo monitor outputs take to reach
the reference level value, it will cause the
reference level LED to flash!
Mute All
Pressing the mute all button causes the
output channels associated with the post-
fader surround and stereo monitor outputs
to mute. The 4-digit display indicates the
mute condition by showing four dashes
(– – – –). The mute all button is always set