Extron electronics mediaport 200 User Manual page 96

4. In the panel on the
From Far End
USB communications audio.
Figure 60. AEC Ref Only Radio Button on Mix Screen
The DSP processor uses this signal as an AEC reference on each microphone input and
also routes it to the sound reinforcement system.
5. Click the
General Settings
6. Connect the REF output of the MediaPort 200 to a line input on the DSP processor
(DMP 128 input 11, "USB Comm"). The REF output sends the USB communications
signal (far end audio) from the MediaPort to the DSP processor. The DSP processor
uses this signal as an AEC reference on each microphone input, and also routes it to
the sound reinforcement system.
7. Connect a line output on the DSP processor to the Mic/Line input of the MediaPort 200.
(DMP 128 output 3, "To MP Mic In"). This line output sends the MediaPort 200 a mix of
the microphones connected to the DSP processor.
Connecting DSP processor outputs
Connect line outputs on the DSP processor to the local sound reinforcement system
(DMP 128 output 1 "SP Spkr L" and output 2 "SP Spkr R"). This line output contains a
mix of the local program material routed from the MediaPort Line output plus the USB
communications audio that was routed to the DSP processor from the MediaPort REF
output.
Connecting inputs to the DSP processor
Connect up to eight microphones to DMP 128 inputs 1 through 8. After selecting the
microphone types, you can use Extron Building Blocks to configure the mic channels for
gain and processor settings (see the DMP 128 User Guide, available at www.extron.com,
or the DSP Configurator software help file for information on Building Blocks).
screen, select the
Mix
button on the PCS main window.
MediaPort 200 • Audio Application Setup
radio button for
AEC Ref Only
90