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RM Nimbus AUX Serial Port to PC 25 Way D-Sub RS232 Cable - 2 Metres
RS232 connector pin assignment
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Serial Direct Cable Connection, DB9, DB25, COM Ports and Pinouts
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Appendix C. Serial Port Interface
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RS232 Pinouts and connections. RS232 Pinout data lines explained in detail.
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RS232 connector pin assignment
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