Studio Technologies 761 - Manual (Page 31)

Model 761/771 User Guide Issue 1, March 2008
Studio Technologies, Inc. Page 31
for Surround
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 fl ash.
It’s worth a using a few sentences to dis-
cuss 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 at-
tempt 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
the remote dim function being active. This
allows remote control equipment, such
as a talkback system, to reliably dim the
monitor outputs.
Mute All
The mute all function is highly complicated
to operate—not! Pressing the mute all but-
ton causes all six monitor output channels
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 mute all 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 fl ash.
Reference Level
The reference level button sets the moni-
tor output level 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 exact monitoring
environment. The LED associated with the
reference level button lights 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 full mute
so “out of the box” the 771 will display four
horizontal lines when reference 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 fl ash. 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 dialnorm data and dim
function. Whatever path the output level
takes to reach the reference level value, it
will cause the reference level LED to fl ash!
Dialnorm Enable
Enabling the dialnorm level function sim-
ply requires pressing the dialnorm enable
button. The button provides a “latching”
function so that the selected state is main-
tained. An associated LED will light when-
ever the function is active. The dialnorm
enable function is only active when the
input source is selected for HD primary.
(This is because dialnorm level data is
available only for that specifi c source.)