4. Device Concept
MMX4x2 series – User's Manual
35
Applied firmware package: v1.6.0b19 | LDC software: v2.5.13b5
4.14.
IR Interface
ATTENTION!
The device has no built-in Infrared receiver and transmitter. For the complete usage attach
the supplied IR emitter unit to the IR OUT and the IR detector unit to the IR IN connectors.
Technical Background
ATTENTION!
Only MMX4x2-HT200 model has TPS LAN port.
The Infrared signal transmission is similar to the serial data communication. The MMX4x2 series matrix
contains dedicated IR I/O connection and the MMX4x2-HT200 model can also transmit/receive IR signal via
the TPS interface. The signal is in pronto HEX format in both cases.
Block diagram of the IR interface
With the help of the device's IR recognizer functionality you can assign actions in Event manager. The second
option is the command injection mode (like at serial interface in the previous section) where you can send IR
commands over LAN. Command injection mode can be turned on and off by input/output ports.
INFO:
All settings are available in the LDC software, see settings in the
section.
INFO:
The modulation of output IR signal can be turned off or on by LW3 command, see the
Disabling Output Signal Modulation
Control by IR Signal - Example
The Concept
An IR detector is attached to the Infrared input port of the Matrix and IR signals are sent by the Remote
controller. A pair of active speakers are also connected to the analog audio output port of the Matrix.
The volume can be controlled via the Matrix by using the remote controller in the following way:
▪
Set an action in
Event Manager
as follows: if the volume control buttons are pressed on the
Remote
controller
, it shall increase or decrease the volume of the analog audio port of the
Matrix
. In this case
you can control the audio device via the Matrix remotely. See the details about the Event Manager
settings in the
section.
TIPS AND TRICKS:
You can increase or decrease the levels of analog audio output ports in steps by LW3
protocol commands, see the details in the
Analog Audio Output Level Settings by Steps
Advanced IR functionality
DIFFERENCE:
The features mentioned below are available from firmware v1.3.1.
MMX4x2 series can send Little-endian pronto hex IR codes on its IR output port as follows:
With Event Manager
(see more details in the
section)
The code can be saved into an action in the Event manager with the following parameters:
▪
Category:
Infra
▪
Expression:
Send pronto hex
▪
Port:
D1
▪
Pronto hex:
<custom_code>
.The maximum length of the code can be 184 characters (184 bytes).
With LW3 protocol command
(for more information, see the
The maximum length of the code can be 765 characters (765 bytes).
Sending Bigger-endian pronto hex code is also available, see the
Sending Pronto Hex Codes in Big-endian
.
