Turning channels on/off – Extron Electronics MVC 121 User Manual
Page 25
MVC 121 • Installation and Operation
The gain level is indicated by the Gain/Volume level LEDs (see
1
).
3
Mic 2 input volume control and on/off status LED
— Turning
the knob clockwise increases the gain setting, and turning the
knob counterclockwise decreases the volume setting. The
on/off LED indicator lights whenever Mic 2 is on or not muted,
but the LED goes off after the minimum volume setting has
been reached.
The gain level is indicated by the Gain/Volume level LEDs (see
1
).
4
Main 3 line level input volume control and on/off status LED
— Turning the knob clockwise increases the gain setting, and
turning the knob counterclockwise decreases the volume
setting. The on/off LED indicator lights whenever Main 3 is on
or not muted, but the LED goes off after the minimum volume
setting has been reached.
The gain level is indicated by the Gain/Volume level LEDs (see
1
).
5
Master output volume control and on/off status LED
—
Turning the knob clockwise increases the volume setting, and
turning the knob counterclockwise decreases the volume
setting. The on/off LED indicator lights whenever master
output is on or not muted, but the LED goes off after the
minimum volume setting has been reached.
The output volume level is indicated by the Gain/Volume level
LEDs (see
1
).
CAUTION
To prevent possible damage to audio equipment, the
output volume range may be specified by setting
the upper and lower limits via the Windows-based
Extron Audio Products Control Program or the SIS
commands.
See the chapter 3 sections, “Setting output
volume range limits” and “Using the
command/response table”.
Turning channels on/off
To turn a channel off, turn the knob counterclockwise until the
status LED goes off. To turn a channel on, turn the knob slightly
clockwise until the status LED goes on. Whenever an
input/output is being adjusted from the front panel, its
on/off status LED indicator goes on and all other on/off status
LED indicators and the Gain/Volume level LEDs go off for 5
seconds.
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