Extron electronic MLS 103 V - Manual (Page 13)

MediaLink VersaTools Switchers • Operation MediaLink VersaTools Switchers • Operation
Operation
audio does not change when you switch between the four
selectable audio inputs.
The last selected input (including audio/video breakaway
selections) will be the active input when the MLS is powered
on.
2 Aux/Mix Level control — This potentiometer controls the
auxiliary/mix audio volume. This channel’s audio is always
output, no matter which, if any, other audio input (0, 1, 2, 3, 4) is
selected. Use a small screwdriver to turn this control while you
listen to the audio output. When the control is turned to its
counterclockwise limit (-43dB), the Aux/Mix signal will be
inaudible. You will hear the maximum Aux/Mix volume when
the control is turned to the clockwise limit (+24dB).
Once this level is set, the Aux/Mix level remains the
same no matter which input (1 through 4) is selected,
and the Aux/Mix audio can be heard at that level even if
the selectable audio inputs are muted or if audio input 0
is selected via RS-232 control.
The gain and attenuation for audio inputs 1 through 4
is adjustable only via RS-232 control (using a third
party controller, a MediaLink Controller, or the
MediaLink Control Software.)
The gain and attenuation for the Aux/Mix input is
adjustable only via the Aux/Mix Level control.
Executive mode — enabling and disabling front
panel buttons
1. To disable front panel input selection (turn executive mode
on), simultaneously press input selection buttons 1 and 4
and hold them down for three seconds. All LEDs will
light for about one second.
2. While executive mode is on, input selection can be
performed via RS-232 control or from an optional
MediaLink Controller.
3. To enable front panel input selection (turn executive mode
off), repeat step 1 (pressing and holding buttons 1 and 4).
3-3 3-2
Front Panel Features and Operation
MLS 100 Series
MediaLink Switcher
AUX/MIX
LEVEL
INPUT SELECT
1 2 3 4
MLS 100 Series Front Panel
(all models)
2 1
All the MLS 100 Series switchers share the same front panel
design, shown above.
1 Input selection buttons and indicator LEDs — Press one of
these buttons to select the desired audio and video input. The
corresponding LED lights and remains lit while an audio-video
input is selected. During audio breakaway (selectable only via
RS-232 control, described in chapter four), audio is switched
separately from video; the selected video input’s LED lights
steadily, and the audio input’s LED blinks.
• The MLS 100 A accepts only audio inputs, so pressing one
of these buttons selects an audio-only input.
• The MLS 103 V and MLS 103 SV offer three video inputs
and four selectable audio inputs. Pressing button 1, 2, or 3
selects audio-video input 1, 2, or 3; pressing button 4
selects audio-only input 4.
• The MLS 102 VGA offers two computer-video inputs and
four selectable audio inputs. Pressing button 1 or button 2
selects audio-video input 1 or 2; pressing button 3 or
button 4 selects an audio-only input (3 or 4) .
If you select an audio-only input (input 3 or 4 for MLS 102 VGA,
input 4 for MLS 103 SV and MLS 103 V) via front panel buttons,
the video signal is muted, and the selected audio input’s LED
blinks.
Input 0 can be selected via RS-232 control only by using an SIS
command or by selecting Mute (shown here)
from the User Mode section of the control
program (if the MLS is used without an MLC).
Selecting input 0 mutes the audio from inputs 1
through 4.
For all models the Aux/Mix audio input is always enabled and
cannot be turned on or off from the front panel. The Aux/Mix