Lightware MMX2-4x3-H20 User Manual page 16

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3. Installation
3.2. Electrical Connections
3.2.1. HDMI Input and Output Ports
The MMX2 series 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.
3.2.2. USB Connectors
USB Type-A
Reserved for future developments.
USB Mini B-Type
The connector is used for service functions.
3.2.3. RS-232 Connector
The switcher contains a 3-pole Phoenix connector, which is used for RS-232 serial connection.
RS-232 connector pin assignments
RS-232 Output Voltage Levels
▪ Logic low level: 3V .. 15V
▪ Logic high level: -15V .. -3V
Compatible Plug Type
Combicon series (3.5mm pitch, 3-pole), type: MC 1.5/3-ST-3.5.
Phoenix ®
You can find more information about RS-232 in the
Serial Interface section.
Applied firmware package: v2.9.0b6 | LDC software: v2.7.6b4
MMX2 series – User's Manual
3.2.4. Analog Stereo Audio
5-pole Phoenix connector is used for balanced analog audio output. Unbalanced audio device can be
connected as well. See more details about the balanced and unbalanced output port wiring in the
Cable Wiring Guide
section.
Analog audio connector and plug pin assignments
Compatible Plug Type
Combicon series (3.5mm pitch, 5-pole), type: MC 1.5/5-ST-3.5.
Phoenix ®
3.2.5. Secure Control LAN, Utility AV LAN, Configurable Ethernet Port
The switcher contains an RJ-45 connector for 100Mbit Ethernet/LAN connection for local control functions.
The Ethernet ports can be connected to a LAN hub, switch or router by a CATx cable. Even though both cable
types (straight or cross) are supported and handled by the device, the pin assignment below is recommended.
Wiring of LAN Cables
Lightware recommends the termination of LAN cables on the basis of TIA/EIA T 568 A or TIA/EIA T 568 B
standards.
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