Studio Technologies 76B 2012 - Manual (Page 33)

Model 76B/77B User Guide Issue 3, August 2012
Studio Technologies, Inc. Page 33
for Surround
Reference Level
The reference level button sets the surround
monitor output level to a preset value. Techni-
cal personnel, using a sound-pressure-level
(SPL) meter and precision signal source,
should have set this level to meet the require-
ments of the specific monitoring environment.
The LED associated with the reference level
button will light whenever the function is
active. Whenever the reference level mode
is active the rotary level control is disabled.
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 reference level LED also serves as a
calibration aid. If the reference level mode
is not active, whenever the monitor output
level is precisely the same as that stored for
the reference value the reference LED will
flash. The monitor output level can reach this
exact level through the use of the rotary level
control by itself or through the setting of the
rotary level control in conjunction with the di-
alnorm data and dim function. Whatever path
the output level 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
six channels associated with the surround
monitor output to mute. The 4-digit display
indicates the mute condition by showing four
horizontal 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. Also,
the mute all function does not impact the
auxiliary monitor output.
Dim
The dim function is provided for user
convenience, allowing the surround moni-
tor output level 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 se-
lected for output level mode, will indicate
the revised monitor output level. If the
requested “dimmed” output level is equal to
or less than the minimum attenuated level,
the monitor output will go into full mute and
the display will show four horizontal dash-
es. When dim is active the monitor output
level reduction will apply no matter whether
the monitor output level is being set by the
rotary level control or by the reference level
button. The LED associated with the dim
button will light whenever dim is active. If
dim mode is enabled via the remote dim
function the dim LED will flash.
It’s worth using a few sentences to discuss
the auto dim off function. Whenever dim
is enabled due to the dim button being
pressed, as well as the rotary level control
being active (reference level mode is not
active), changing the setting of the rotary
level control will automatically turn off
dim. The auto dim off function is a unique
attempt at protecting the aural health of
users. No longer will there be a heart-
stopping blast of audio when the dim but-
ton is pressed, supposedly to enable dim,
but actually turning dim off because it was
already enabled. It’s hard to explain unless
you’ve experienced this in person—trust
us, this situation can and does happen!
Note that the auto dim off function is not
active whenever dim is enabled due to