Studio Technologies 76DA V.4.12 - Manual (Page 41)

Model 76DA/77 User Guide Issue 9, May 2014
Studio Technologies, Inc. Page 41
for Surround
Monitor Output General
Functions
Four buttons and one rotary control are
associated with the post-fader digital and
analog surround and stereo monitor output
functions. The buttons control operation of
the surround and stereo outputs, reference
level, mute all, and dim functions. The rotary
level control is used to manually set the
post-fader surround and stereo digital and
analog monitor output levels. These buttons
and the rotary control do not impact the
pre-fader surround and stereo input C direct
digital monitor outputs.
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
stereo 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
analog monitor output levels to a preset
value. Technical personnel, using a sound-
pressure-level (SPL) meter and precision
signal source, should have set this level
to meet the requirements of the specific
monitoring environment. The LED associ-
ated 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 refer-
ence level is –60.0 dB so “out of the box”
the Model 77 will display –60.0 when refer-
ence level mode is enabled.
How the rotary level control functions when-
ever 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 function; it will
remain active. If the auto reference level
off function has been enabled turning the
rotary level control will cause the reference
level function to automatically turn off.
The LED associated with the reference
level button can also serve as a calibration
aid. If the reference level mode is not active,
whenever the post-fader surround or stereo
digital and analog monitor output levels are
precisely the same as that stored for the
reference value the reference level LED
will flash. This exact level can be reached
through the use of the rotary level control,