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MPX 423 A • Operation

PRELIMINARY
3. Press the Single button or the Separate button to select the desired mode.
When you make a mode selection, the Single and Separate LEDs go out, and
the Mode LED begins flashing.
If a selection is not made within 30 seconds, the currently active mode
remains active, the Single and Separate LEDs go out, and the Mode LED
begins flashing.
1
1
OUTPUTS/
AUDIO
MODE SINGLE SEPARATE
INPUTS
COMPUTER
2
2 3 4
Separate buttonSingle button
4. Press the Mode button. The Mode LED goes out, and all other front panel
LEDs return to their input indications.
N The switcher mode selection affects only the selected output port. It is possible
to have one output port in single switcher mode, and the other output port in
separate switcher mode.
Muting and unmuting video and/or audio
Individual outputs can be muted or unmuted as follows:
N Regardless of switching modes, you can still mute individual outputs.
1. Select a video, audio, or both to mute or unmute by pressing the I/O button.
2. One at a time, press and hold the output button for the desired output group
for approximately 2 seconds. The output LEDs for the selected output blinks
to indicate the mute or return to their previous state to indicate the unmute.
• Press and hold the VGA output button for 2 seconds to mute the selected
VGA outputs.
• Press and hold the Composite Video output for 2 seconds to mute the
selected Composite Video output.
• Press and hold the S-video output button for 2 seconds to mute the
selected S-video output.
N Since the video groups share the audio outputs, audio outputs can be muted in
any video group. To avoid unwanted audio mute, select video only or audio only
by pressing the I/O button before muting the selected output.
N Mutes are saved to nonvolatile memory. When power is removed and restored,
the mute settings are retained.
N To view the mute status, it is recommended to select video only or audio only
(I/O button) and toggle output buttons on any video group. The muted output
LED will blink.
N Selecting video & audio (I/O button) to view muted outputs is not
recommended. Blinking output LEDs could also mean an audio or follow-all tie.