Video Crosspoint; Audio Crosspoint - Lightware MODEX-OPTS-TX User Manual

7.4.1. Video crosspoint

The number of the inputs and the outputs are depending on the number and the direction
of the video modules. As MODEX supports only one video transmission over the link, the
link appears as an input or as an output depending on the direction of the extender.
At the transmitter side the link appears as an output. At the receiver side the link appears
as an input.
Example
Above figure shows one input and one output. HDMI is the input port and the output port is
the fiber optical connector – towards to the receiver. In this case there is no real crosspoint
switching, the signal of the input port is always switched to the output port (except if the
output is muted).

7.4.2. Audio crosspoint

MODEX extenders support two audio groups: the Main audio group and the S/PDIF audio
group. These groups are independent from each other. In this case there are forbidden
crosspoint connections. The link can support four audio layers:
Main audio group:
S/PDIF audio group:
At the transmitter side the Embedded audio and the Forward Audio appears as an output,
the Return Audio and the Return AUX appears as an input. At the receiver side the direction
is the opposite.
The four audio layers, between the transmitter and the receiver are defined and fixed,
always extended. The other audio inputs and outputs are optional and depend on the
installed interface modules; the available crosspoint settings depend on the application
mode set in the properties of the audio module.
Section 7. Web control – Using the built-in website
Figure 7-1. Video crosspoint (Transmitter)

Embedded audio (from transmitter to receiver)

Return AUX (from receiver to transmitter)

Forward Audio (from transmitter to receiver)

Return Audio (from receiver to transmitter)
S/PDIF input
Analog input Transmitter
HDMI input
fixed
optional
Embedded audio
Forward audio
Return AUX
Return audio
Analog output
S/PDIF output
Figure 7-2. Audio layers
MODEX-OPTS, MODEX-OPTM
User's Manual
Analog input
Receiver
S/PDIF input
HDMI output
Analog output
S/PDIF output
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