4.2. Video interface
The video crosspoint settings can be controlled by any of the following ways:
▪
Pressing
Video Select
button on the device,
▪
Using Lightware Device Controller (LDC),
▪
Sending LW2 or LW3 protocol commands, or
▪
Using the
Autoselect
function.
Port selection
The transmitter can receive LW2 or LW3 commands from USB, RS-232 or Ethernet
interface, which can be either local or remote. It means that the input selection can also be
controlled remotely from an optical receiver’s RS-232 or Ethernet port.
Only one video and audio can be selected to transmit; below figure shows the port diagram
of input selection.
SW4-OPT-TX240RAK port diagram
INFO
The audio/video signal on the local HDMI output port is always the same as on the optical
output port.
Direct selection on SW4-OPT-TX240RAK
Desired video input can be selected by the
Video select
button, the order is the following:
4.2.1. The Autoselect feature
There are three types of Autoselect as follows.
▪
First detect mode
: selected input port is kept connected to the output while it has an
active signal
▪
Priority detect mode
: always the highest priority active input is selected to transmit.
▪
Last detect mode
: always the last attached input is selected to transmit.
OPT
Ethernet
(Control only)
GPIO
RS-232
HDMI out
4:1 video
switch
DVI-D in
Digital video in
Digital video in
Digital video in
Digital video in
HDMI 1 in
HDMI 2 in
DP in
Audio1 in
Audio2 in
USB Control
Embedder
3:1 audio
switch
HDMI
Splitter
Processor
embedder
De-
A/D
converter
A/D
converter
DP
HDMI1
DVI-D
Autoselect
HDMI2
HDMI-3D-OPT-TX200 series
User’s manual
Optical extender concept
Page 21 / 106