5. Software Control - Lightware Device Controller
UMX-HDMI-140 series– User's Manual
37
Applied firmware package: v1.2.0 | LDC software: v2.4.1b7
5.5.3.
CEC (on HDMI Ports)
DIFFERENCE:
This feature is available only in
UMX-HDMI-140-Plus
model.
UMX-HDMI-140-Plus model is able to send and receive Consumer Electronic Control (CEC) commands. This
feature is for remote control of the source or sink device. CEC is a bi-directional communication via HDMI cable,
in this case between the output port of the switcher and the sink.
#cec
Layout of CEC panel in Lightware Device Contoller
ATTENTION!
It can occur that the third-party device can receive, but not execute the command because
it is not supported by the product. Check the accepted commands in the documentation of the device.
INFO:
The first 2x2 bytes of the CEC commands contains identification data of the source and destination
address. When the port is input, it is always 04 (from TV to Playback device 1.)., when the port is output,
it is always 40 (from Playback device 1. to TV).
4
5
6
1
2
3
1
Drop-down
command list
This list contains the basic CEC commands, most of them are displayed on the
graphical interface, too (on the left side). Click on the
Send
button to execute
sending the command.
2
Custom
command
textbox
The text field is for sending hexadecimal commands to the source. The maximum
length of the message could be 30 characters (15 bytes). Click on the
Send
button
to execute sending the command.
3
OSD string
textbox
A max. 14 character-long text can be shown on the sink device. The send OSD (On-
screen display) command textbox is the input field of the string. Alphanumeric
characters, glyphs and space are accepted. Click on the
Send
button to execute
the command.
4
Received
Command box
Displays all the sent (in red) CEC commands and the received answers (in blue)
with a timestamp.
Legend of the received message:
< [10:33:17] ACK
Answer for the acknowledged command.
< [10:35:01] NACK
Answer for the not acknowledged command.
< [10:33:17] IN PROGRESS
The command is in progress at the moment.
< [10:33:17] FAILED
Answer for other failure.
< [10:35:40] feature_abort_<*>
This is the most common answer from the third-party devices when the
command is delivered, but the execution is refused. The cause of the refuse
stands after 'feature_abort' expression.
5
Clear button
Click on the
Clear
button to erase the content of the terminal window.
6
CEC command
button panel
This panel provides the quick and easy management of CEC commands. These
buttons are pre-programmed with basic functions and sends commands towards
the sink. The communication is displayed in the Received Command box. For the
list of the commands see
Sending CEC Commands
section. Both the layout and
functionality are similar to the design of a remote control.
ATTENTION!
Make sure that the controlled unit is CEC-capable and this function is enabled.
