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Program Audio
The selected audio input is routed to the program audio output according to the switcher
mode. The input LED selected for program audio output blinks.
Program Audio Selection
Single switcher mode
In single switcher mode, audio from the selected input is routed to the program audio
output. If combine mode is active, when a DVI input is selected, DVI audio is available on the
HDMI audio output and the program audio output.
Separate switcher mode
In separate switcher mode, the selected audio input from only one of the four input groups
is routed to the program audio output. The selected input is indicated by a flashing input
LED and is always the last input selected. The selected input LEDs of the other three groups
are steadily lit.
If combine mode is active, when a DVI input is selected, DVI audio is available on the HDMI
audio output and the program audio output.
1
MODE
2
SINGLE
1
SEPARATE
2
COMBINE DVI/HDMI
1
2
1
2
3
MUTE
MPS 409
DIGITAL MEDIA PRESENTATION SWITCHER
MUTE
VIDEO INPUTSHDMI INPUTS
MIC PROGRAM AUDIO
DVI INPUTSVGA/YUV INPUTS
CONFIG
EXEC
MODE
LED
Lit
LED
Blinking
LED
Lit
LED
Lit
Figure 16. Program Audio Selection (HDMI Program Audio Selection Shown)
Program Audio Breakaway
Both separate and single switcher modes provide audio breakaway which allows routing of
the audio signal from any input to the program audio output independently from the video
signal. It is available via software control only. See Program Audio Breakaway on page 23
Program Audio Volume Control
Using the front panel volume control knob, the user can increase or
decrease program volume. The adjustment of program volume has
no effect on the Mic volume so program audio can be muted while
the Mic input is still active. The program audio volume has a range
from 0-100 allowing the product to be controlled with a MediaLink
controller. The associated LEDs light from bottom to top with
increasing volume.
Program Audio Mute
The Program Audio mute button toggles the audio on and off. The indicator LED to the
right of the button lights red when program audio is muted. Press the mute button again to
unmute the output.
Changing the audio input selection does not unmute the program audio output.
Changing the program audio control knob unmutes the program audio output.
NOTE: Program audio mute does not mute the microphone input.
1
MODE
2
SINGLE
1
SEPARATE
2
COMBINE DVI/HDMI
1 21 2 3
MUTE
MPS 409
DIGITAL MEDIA PRESENTATION SWITCHER
MUTE
VIDEO INPUTSHDMI INPUTS
MIC
PROGRAM AUDIO
DVI INPUTSVGA/YUV INPUTS
CONFIG
EXEC
MODE
MPS 409 • Operation 15