Ir Interface - Lightware MMX4x2-HDMI User Manual

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4. Device Concept
4.10. 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
INFO:
The modulation of output IR signal can be turned off or on by LW3 command, see the
Disable Output Signal Modulation section.
Control by IR Signal - Example
MMX4x2 series – User's Manual
Infra section.
Enable/
Applied firmware package: v1.5.0b8 | LDC software: v2.3.0b1
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 is also connected to the analog audio output port of the Matrix.
The volume can be controlled via the Matrix by using the remote controller with the following way:
▪ Set an action in Event Manager that if the volume control buttons are pressed on the Remote controller,
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
Manager 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
MMX4x2 series can send Little-endian pronto hex IR codes on its IR output port.
It is possible in the following ways:
▪ With Event Manager (see more details in the
The code can be saved into the action in the event manager with the following parameters:
Category: Infra; Expression: Send pronto hex; Port: D1 or ; Pronto hex:
of the code can be 184 characters (184 bytes).
▪ With LW3 protocol command (for more information see
length of the code can be 765 characters (765 bytes).
Sending Bigger-endian pronto hex code is also available, see
Format via IR Port.
section.
Event Manager section)
<custom_code> .The maximum length
Infrared Message Sending). The maximum
Sending Pronto Hex Codes in Big-endian
30
Event