5. Software Control – Lightware Device Controller
MMX8x4-HT series – User's Manual
59
Applied firmware package: v1.2.2b5 | LDC software: v2.2.1
CEC
#cec
The MMX8x4-HT series matrix switchers are 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 matrix switcher and the sink.
Layout of CEC panel in Lightware Device Contoller
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
Send CEC Command in Text Format
section. Both the layout and
functionality are similar to the design of a remote control.
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 bit of the CEC commands contains identification data of the source and destination
address. In this case that is always 40.
ATTENTION!
Make sure that the controlled unit is CEC-capable and this function is enabled.
