Studio Technologies 76DBA V.3.00 - Manual (Page 39)

Model 76DBA/77B User Guide Issue 1, November 2010
Studio Technologies, Inc. Page 39
for Surround
by folding down all channels associated
with the selected surround input.
Monitor Output General
Functions
Four buttons and one rotary control are
associated with the post-fader surround
digital and analog monitor output func-
tions. The buttons control operation of the
reference level, mute all, dim and dialnorm
enable functions. The rotary level control
is used to manually set the post-fader
surround 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.
Reference Level
The reference level button sets the post-
fader surround 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 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 77B will display –60.0 when refer-
ence level mode is enabled.
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
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,
either by itself or through the setting of
the rotary level control in conjunction with
the dim function. Whatever path the post-
fader surround digital and analog monitor
outputs takes 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 digital and analog monitor
outputs to mute. The 4-digit display indi-
cates the mute condition by showing four
dashes (– – – –). The mute all button is
always set to “latch” the function on and
off. The LED associated with the mute
all button will light whenever mute all is
active. Note that if mute all is enabled via
the remote mute all function, the mute all
LED will flash.
Dim
The dim function is provided for user con-
venience, allowing the post-fader surround
digital and analog monitor output levels
to be reduced by a fixed amount. The
Model 77B’s configuration mode allows
the dim level to be selected from among
four choices: –10.0, –15.0, –20.0, or –25.0
dB. Pressing the dim button will enable the
function. The dim button is always set to
“latch” the function on and off. The 4-digit
display, when selected for output level
mode, will indicate the revised post-fader
surround digital and analog monitor output
levels. If the requested “dimmed” output
level is equal to or less than –96.0 dB, the
post-fader surround monitor outputs will go
into full mute and the display will show four
dashes (– – – –). When dim is active the
post-fader monitor output level reduction
will apply no matter whether the level is