Electrical Connections; Hdmi Input And Output Ports; Analog Stereo Audio; Microphone In - Lightware MMX8x4-HT420M User Manual

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4. Installation
4.2. Electrical Connections
4.2.1. HDMI Input and Output Ports
The matrix switchers are assembled with standard 19-pole HDMI connectors with screw lock for inputs and
outputs. Always use high quality HDMI cable for connecting sources and displays.
4.2.2. Analog Stereo Audio
5-pole Phoenix connector is used for balanced analog audio input or output. Unbalanced
audio signals can be connected as well. See more details about the balanced and
unbalanced I/O port wiring in the
Analog audio connector and plug pin assignments
Compatible Plug Type
Phoenix Combicon series (3.5mm pitch, 5-pole), type: MC 1.5/5-ST-3.5.
®
4.2.3. Microphone IN

DIFFERENCE: MMX8x8-HDMI-4K-A and MMX8x8-HDMI-4K-A-USB20 models have no microphone input.
The 3-pole Phoenix connector is used for the analog microphone input. 48V phantom powering
is available via connector.
Microphone connector and plug pin assignments
INFO:
The maximum rating of Microphone input is 48V and 7mA.
Compatible Plug Type
Phoenix Combicon series (3.5mm pitch, 3-pole), type: MC 1.5/3-ST-3.5.
®
You can find more information about the wiring in the
in Installation Guide for Connecting a Microphone
Cable Wiring Guide section.
Pin nr. Signal
1 Left+
2 Left-
3 Ground
4 Right-
5 Right+
Pin nr. Signal
1 Ground
2 -
3 +
Cable Wiring Guide section and about the connection
section.
MMX8x4-HT series – User's Manual
4.2.4. RS-232 Connector
The receiver contains a 3-pole Phoenix connector which is used for RS-232 serial connection.
RS-232 Output Voltage Levels
▪ Logic low level: 3V .. 15V
▪ Logic high level: -15V .. -3V
Compatible Plug Type
Phoenix
You can find more information about RS-232 in
4.2.5. Infra/ Serial TTL Connector
The matrix switcher contains a 2-pole Phoenix connector. Depending on the destination port, it
can be used for TTL serial data output or Infra emitter.
TTL digital signal levels can be set to high or low level (Push-Pull).
Using a receiver with at least 1k impedance to any voltage between 0V and 5V, the output voltages are:
Logic low level: 0 .. 0.25V
▪
▪ Logic high level: 4.75 .. 5.0V
In that case the actual current is:
▪ Logic low level: -5mA < current < 0mA (sink)
Logic high level: 0mA < current < 5mA (source)
▪
Compatible Plug Type
Phoenix
You can find more information about TTL in the
Interface
Applied firmware package: v1.3.0 | LDC software: v2.4.2
Pin nr.
1 Ground
2 TX data
3 RX data
RS-232 connector pin assignments
Combicon series (3.5mm pitch, 3-pole), type: MC 1.5/3-ST-3.5.
®
Serial Interface
Pin nr.
1 Ground
2 TX data
Infra/ TTL serial connector pin assignments
Combicon series (3.5mm pitch, 2-pole), type: MC 1.5/2-ST-3.5.
®
Serial Interface
section.
30
Signal
section.
Signal
section and about Infrared in the Infra