Extron electronics MediaPort 300 User Manual page 19

Mix controls for far end audio (USB output)
The USB audio output can be configured in two unique configurations:
•
•
The Include Line In 2 checkbox can optionally be used to include audio from the analog
Line In 2 into the USB mix to the USB host or PC (see
GAIN
HDMI IN L FLT
HDMI IN R GAIN FLT
{
GAIN FLT
USB IN L
From
PC
(from
far end)
GAIN
FLT
USB IN R
Phantom
GAIN
MC/LINE IN 1 FLT COMP
GAIN
LINE IN 2 FLT
Figure 6.
MediaPort 300 matrix routing table
The matrix routing table , below, is an audio table that displays MediaPort 300 audio
routing. Viewing the mix matrix routing from the perspective of the outputs:
USB In (from PC)
HDMI In
Mic/Line 1 In
Line 2 In
* When Line Outputs are configured for stereo or mono.
When Line Outputs are configured for Line Out 1 = Program and Line Out 2 = PC (USB)
†
Stereo (default) (see figure 6, green) — the USB output passes true left and right
stereo audio to the USB host / PC.
Dual Mono (red) — Program audio sources are summed to mono; the USB audio
output left and right channels offer identically mixed mono outputs.
Mute = 0
Mute = 1
D
GAIN
TGT
D
GAIN
TGT
D
GAIN
TGT
D
GAIN
TGT
D
GAIN
DUCK
TGT
D
GAIN
TGT
Far End Mix Option
Matrix Routing Table
USB Out Line Out 1*
No
Yes
Yes
Optional
MediaPort 300 HDMI and Audio to USB Scaling Bridge • Theory of Operation
figure 5
TRIM DLY
TRIM DLY
TRIM
FLT LIM
TRIM
FLT LIM
Line Out 2*
USB L or USB R or
USB mono USB mono
HDMI L or HDMI R or
HDMI mono HDMI mono
No No
Optional Optional
on page 10).
USB
ATT
}
OUT L
To PC
(to far
USB
ATT end)
OUT R
ATT
LINE OUT 1
ATT
LINE OUT 2
Line Out 1 Line Out 2
†
No USB mono
HDMI mono No
No No
Optional No
†
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