4. Installation MMX8x4-HT series – User's Manual 30
Electrical Connections
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.
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
section.
Analog audio connector and plug pin assignments
Compatible Plug Type
Phoenix
®
Microphone IN
DIFFERENCE: MMX8x8-HDMI-4K-A and MMX8x8-HDMI-4K-A-USB20 models have no microphone input.
is available via connector.
Microphone connector and plug pin assignments
INFO:
Compatible Plug Type
Phoenix
®
section and about the connection
in Installation Guide for Connecting a Microphone section.
Pin nr. Signal
1
2
3 Ground
4 Right-
5 Right+
Pin nr. Signal
1 Ground
2 -
3 +
RS-232 Connector
The receiver contains a 3-pole Phoenix connector which is used for RS-232 serial connection.
RS-232 connector pin assignments
RS-232 Output Voltage Levels
▪
▪
Compatible Plug Type
Phoenix
®
Serial Interface section.
The matrix switcher contains a 2-pole Phoenix connector. Depending on the destination port, it
Infra/ TTL serial connector pin assignments
▪
▪
In that case the actual current is:
▪
▪
Compatible Plug Type
Phoenix
®
Serial Interface section and about Infrared in the Infra
Interface section.
Pin nr. Signal
1 Ground
2 TX data
3 RX data
Pin nr. Signal
1 Ground
2 TX data
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