MPS 409 Setup Guide
This guide provides basic instructions for an experienced technician to install, set up, and
operate the Extron® Media Presentation Switcher, MPS 409. Where possible in the following
pages, line drawings are used to clarify steps discussed in the text. Installation and service
must be performed by authorized personnel only.
Installation
Step 1 — Disconnect Power
Remove power from the switcher and all other devices that will be connected.
MIC
PROGRAM AUDIO
VGA/YUV INPUTS
DVI INPUTS
HDMI INPUTS
VIDEO INPUTS
MUTE
MUTE
1
2
1
2
1
2
3
1
2
EXEC
MODE
MODE
SINGLE
SEPARATE
COMBINE DVI/HDMI
CONFIG
MPS 409
DIGITAL MEDIA PRESENTATION SWITCHER
Step 2 — Mount the Switcher
The MPS 409 is housed in a full rack width, 8.5 inch deep, 1U high metal enclosure. Select a
mounting location, then choose an appropriate mounting option and mount the switcher.
b
c
d e
f
g
h
i
100-240V
0.4A MAX
VGA/YUV
HDMI
3
VIDEO
1
1
2
OUTPUT
1
3
1
2
OUTPUT
1
2
OUTPUT
L
L
L
1
2
OUTPUT
1
2
OUTPUT
R
R
R
OUTPUT
1
2
OUTPUT
2
OUTPUT
50/60 Hz
2
DVI-D
l
m
n o
p
q
r
s
Step 3 — Cable the Switcher
Tip (L+)
Ring
(R+)
Make certain the MPS 409, all sources, and displays are powered off. Run all audio, video,
communication and power cables for operation.
a. Attach up to two VGA/YUV ( ), two DVI ( ), three HDMI ( ), and two composite video ( )
h
b
l
f
Sleeve (
)
input devices to the switcher.
3.5 mm Stereo Plug Connector
(unbalanced)
b. Connect the VGA/YUV output ( ), DVI output ( ), HDMI output ( ), and video ( ) output
c
m
p
r
from the switcher to the appropriate display inputs.
c. For stereo input, connect up to nine audio sources to each of the unbalanced stereo audio
input groups; VGA/YUV ( ), DVI ( ), HDMI ( ), and Video ( ). See the 3.5 mm plug
CAUTION
d
n
g
i
For unbalanced audio, connect the
sleeve(s) to the ground contact.
DO NOT connect the sleeve(s) to the
negative (-) contacts.
connector diagram on the right for wiring.
d. For unbalanced stereo output, connect an output device to each of the
output groups; VGA/YUV ( ), DVI ( ), HDMI ( ), and Video ( ).
e
o
q
s
Tip
Ring
Tip
NO Ground Here
Sleeve(s)
See the 3.5 mm plug connector diagram on the right for wiring.
Sleeve(s)
Tip
Tip
e. Connect an audio amplifier to the Program Audio Output connectors.
Ring
NO Ground Here
Balanced Output
Unbalanced Output
See the connector diagram on the right for proper wiring.
f. (Optional) Connect a microphone to the rear Mic/Line connector
(see the figure at right). Refer to the microphone user guide for
proper wiring and phantom power requirements.
Tip
MIC/LINE
Sleeve
Unbalanced Mic Input
RS-232
LEVEL
+48V
PROGRAM
AUDIO
OUT
Set switch 2 of the DIP switch bank down (off) for a microphone. If
phantom power (+48V) is required, set switch 1 up (on).
MIC/LINE
L
R
ON LINE
ON
Tx Rx
Tip
Ring
Sleeve
1
2
g. (Optional) If the switcher is connected to a computer or host
controller for remote control, connect the host RS-232 cable to the
3-pin captive screw connector on the rear of the switcher (see the
figure at right).
OFF MIC
Balanced Mic Input
Tx Rx
(5 mm)
MAX.
RS-232
Device
Bidirectional
Transmit (Tx)
Receive (Rx)
Ground ( _)
Transmit (Tx)
Receive (Rx)
Ground ( _)
Do not tin
the wires!
1
MPS 409 Setup Guide (Continued)
In separate-combine mode, only one input selection is allowed from the
HDMI/DVI groups along with a single input selection from the VGA/YUV group
and another from the Video group. So there will only be three front panel input
LEDs lit in combined mode rather than four when in separate switcher mode.
Combined Switcher Mode
VGA/YUV INPUTS
DVI INPUTS
To enable combined switcher mode:
1
2
1
2
1
Press and hold the Mode button (VGA/YUV Input #1) for three seconds, then
press and release the Combine DVI/HDMI button (DVI input #2). The Combine
DVI/HDMI button LED indicates if combined switcher mode is on (when lit)
or off. The Single and Separate button LEDs indicates whether it is in single
switcher mode or separate switcher mode. When the Mode button is released,
the LED resumes input indication.
MODE
SINGLE
SEPARATE
COMBINE DVI/HDMI
Press and Hold
for three seconds
Press and release
Combine DVI/HDME
Setup and Operation — Optimizing the Audio
For optimal audio quality, the audio input levels can be adjusted individually. In addition, the microphone
and program output levels can be adjusted separately using the front panel controls. Program output and
microphone levels are independent from each other. Muting program audio does not mute the microphone
input.
Setting the Input Audio Level
1. Simultaneously press and hold the Program Audio Mute and MIC Mute
a Press and hold
for 3 seconds
buttons until the two mute LEDs flash three times, then release both
buttons.
MIC
PROGRAM AUDIO
VIDEO INPUTS
MUTE
MUTE
3
1
2
2. Press a Video Input button for the audio to be adjusted (video input #1
is shown). If an input button is not pressed, the switcher times out and
exits audio level adjustment mode.
MPS 409
DIGITAL MEDIA PRTATION SWITCHER
3. In audio adjustment mode, when an input button is pressed, the front
panel input LEDs indicate the current gain/attenuation setting. Factory
default is 0 dB (all LEDs off). Rotate the Program Audio volume knob
clockwise to increase and counterclockwise to decrease the audio level. The
front panel LEDs display the level setting as the knob is adjusted (see
Audio Gain/Attenuation Adjustments in the MPS 409 User Guide).
b Press input to
select
c Adjust input
level
4. Once the desired level is achieved, to adjust another input, select it within
three seconds. If audio adjustments are complete, to exit the gain/attenuation
mode:
a. Do not press any front panel buttons for at least three seconds, or
b. Press the Program Audio Mute and MIC Mute buttons.
At any time during the adjustments, if the front panel buttons are not pressed or
the program knob is not rotated within three seconds, the switcher times out and
the gain/attenuation mode is exited.
Setting the Program Output Audio Level
1. Turn on all equipment and select an input with an audio signal present.
PROGRAM AUDIO
2. Turn on program audio by pressing the Program Audio Mute button (the LED
goes out).
MUTE
3. Using the Program Audio volume control (right), adjust the volume of the
audio amplifier connected to the Program Audio Out connector to achieve
the desired sound level.
MPS 409
DIGITAL MEDIA PRESENTATION SWITCHER
Setting the Microphone Level
1. Turn on all equipment and select an input with an audio signal present.
2. If the program audio output level has not been adjusted, do so before setting
MIC
the microphone level.
MUTE
3. If phantom power is required for the microphone, be certain it is on.
4. Turn on the microphone by pressing the MIC Mute button (the LED goes out).
5. Talk into the microphone in a normal voice and adjust the Mic volume knob
(right) to the desired sound level.
3
MPS 409 Setup Guide (Continued)
Setting the Microphone Talk-Over Threshold
Microphone threshold (the volume where vocal audio is detected) and the program audio level during talkover are adjustable via SIS
commands. See Audio Adjustments in the MPS 409 User Guide for additional SIS commands.
1. Speak into the microphone in a normal voice. The main program audio level should drop moderately. If not, adjust the microphone
threshold level.
2. Stop speaking into the microphone. Main program audio should recover to its previous level after approximately four seconds. If
not, adjust the microphone threshold level.
3. If the program audio during talkover is too loud, or too soft, adjust the program audio level.
Mic talk-over threshold
Display talk-over threshold
Shows the mic threshold
number. X*= 0 through 15,
default = 8.
X** 2 #
Thr X* ]
Decrement threshold
Increment threshold
View mic talk threshold
– * 2#
+ * 2#
2 #
Decrements mic threshold one
step.
Thr X* ]
Thr X* ]
X* ]
Increments mic threshold one
step.
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