Extron Electronics MPS 112 Series Setup Guide - Manual (Page 2)

Setup Guide — MPS 112 Series, cont’d
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68-706-50
Rev. A
04 09
Step 9 — Connect Power
Power up the input and output devices, then connect power to the rear AC connector of the MPS 112.
Optimizing the audio
1. Finish the installation and wiring as described, turn on all equipment, and provide an input signal to the switcher.
2. Reset the program audio volume by pressing and holding the Mode button, then pressing and releasing the
Prog Vol Reset button. Release the Mode button to return to normal operating mode.
3. Select an input with a signal present, and adjust the volume of the audio amplifier connected to the Prog Out audio con-
nectors to achieve the desired sound level.
4. Toggle microphone power (15V for MPS 112 or 48V phantom power for MPS 112CS) on or off as required:
a. Press and hold the Mode button for more than 2 seconds.
b. Press and release the Mic Power On/Off button. The associated LED lights when mic power is on.
5. Turn on the microphone by pressing the Mix button (the associated LED lights).
6. Reset the microphone volume by pressing and holding the Mode button, then pressing and releasing the Mic Vol Reset
button. Release the Mode button to return to normal operating mode.
7. Talk into the microphone in a normal voice and adjust the Mic Volume knob to the desired sound level.
8. Use the Program Volume and Mic Volume knobs on the MPS switcher to adjust the volume.
Setting the microphone talk-over threshold
1. Set the program audio and microphone levels as described in "Optimizing the audio".
2. Turn on the microphone by pressing the Mix button (the associated LED lights).
3. Speak into the microphone in a normal voice. The main program audio level should drop moderately. If not, lower the
threshold by pressing and holding the Mix button and turning the Mic Volume knob counter‑clockwise. Release the Mix
button to return to normal operating mode.
4. Stop speaking into the microphone; the main program audio should recover to the previous level after approximately 4
seconds. If not, increase the threshold by pressing and holding the Mix button and turning the Mic Volume knob clock-
wise. Release the Mix button to return to normal operating mode.
Single/Separate Switcher Operation
The MPS 112 can be configured for operation in two modes: Single or Separate. Single mode emulates one switcher with 12
inputs. Separate mode emulates three separate switchers. Single or Separate mode is selected by pressing and holding the
Mode button for more than 2 seconds, then pressing and releasing the Single or Separate button depending upon the desired
operating mode.
Single Switcher Operation
In Single switcher mode, when an input is selected the input audio and video is routed to the output for that group, and the
audio is also sent to the program audio output. All other outputs are muted. When selected, the green LED indicator to the
right of the input button lights steadily. All other input LEDs are off. To select another input, press a different input button.
Separate Switcher Operation
In Separate switcher mode, the switcher acts as three independent switchers within the three input groups: VGA/Audio,
S‑video/Audio, and Video/Audio. Each group has a video and audio output for its group that are always active. Program
audio comes from the last input selected and is indicated by a flashing input LED. For additonal information, see the
"Program Audio" section in chapter 3 of the MPS 112 User’s Manual.