Video Interface; Video Input Modes; Input Source Selection Modes; Automatic Input Selection - Example - Lightware UMX-HDMI-140 Series User Manual

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4. Device Concept
4.4. Video Interface
4.4.1. Video Input Modes
The device can receive digital video signal on the HDMI, DisplayPort, and DVI-D input ports and analog video
signal on the VGA and the DVI-A input ports.

INFO: Both the DVI-A and DVI-D signals can be received on the same DVI-I input port.
4.4.2. Input Source Selection Modes
Video input source can be selected 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.
The Autoselect Feature
There are three types of Autoselect as follows.
▪ First detect mode: selected input port is kept
connected to the output as long as 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.
Flowchart of Autoselect modes
N
New event?
Y
Current
„First detect" „Last detect"
Autoselect mode
Last connected
Selected
input is selected
„Priority detect"
N
port still has a
valid signal?
Port with
Y Port with priority
priority 0 has a
Y 0 is selected
valid signal?
Remains
N
selected
Port with
Y Port with priority
priority 1 has a
1 is selected
valid signal?
N
Port with
Y Port with priority
priority 2 has a
2 is selected
valid signal?
N
Port with
Port with priority
Y
priority 30 has a
30 is selected
valid signal?
N
Test
„No signal"
Display „Off" No Audio/Video
pattern generator
Test pattern
transmission
setting
Applied firmware package: v1.2.0 | LDC software: v2.4.1b7
UMX-HDMI-140 series– User's Manual
4.4.3. Automatic Input Selection - Example
The Concept
If there is no other source connected to the switcher, but the Laptop, VGA input will be automatically switched
to the HDMI output. If the Laptop and the PC are also connected to the switcher, DVI-D input will be switched
to the HDMI output. If the Blu-ray player is connected on the HDMI input, and later the MacBook is connected
on the DP input of the switcher, it will be switched to the HDMI output – independently of the presence of
other video signals.
Settings
HDMI output: Set the Autoselect to Enabled. Set Autoselect mode to Priority detect. The priorities are the
▪
following (the lowest number means the highest priority):
Source device
MacBook
Blu-ray player
PC
Laptop
Priorities can be set in Lightware Device Controller software, see related settings in the
Input interface Input port
DP IN I3
HDMI IN I2
DVI-D IN I4
VGA IN I1
Video Output
26
Priority
0
1
2
3
section.