MS300 Advanced Users Guide
3/3/2005
Page 44 of 65
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Control Cable Pin-Outs and Requirements
The MS300 uses a standard null modem cable to connect between its RS-232 COM ports
and external changers and control systems. Cables must be 25 feet or less in length.
MS300 DB-9 Female Component DB-9 Female
Pin Function Pin Function
2 RD 3 TD
3 TD 2 RD
5 GND 5 GND
4 DTR 6 DSR
6 DSR 4 DTR
Note: DR and DSR lines are only required for connection to Kenwood DVD changers.
The MS300 uses the DTR/DSR lines to determine a connection and power state.
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