Kramer Electronics VS-4228 - Manual (Page 8)

VS-4228 - Overview 5
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Figure 2: VS-4228 8-Port RS-422 Matrix Switcher Rear Panel
# Feature Function
10 RS-422 9-pin D-sub Connectors RS-422 bi-directional ports (1-8)
11 CONTROL RS-485 Terminal Block Connector Connector for external RS-485 control (PINOUT: G, -, +)
12 CONTROL RS-232 IN 9-pin D-sub Connector Connect to the PC serial port
13 CONTROL RS-232 OUT 9-pin D-sub Connector Connect to the RS-232 IN port of the next unit
14 Power Connector with Fuse AC connector enabling power supply to the unit