QSC Audio DSP-30 manual Use RS-232 Pinout

Use: RS-232 Pinout

RS-232 Pinout:

The diagram below shows the pin assignments for the female RS-232 connector on the DSP.

Pin	Signal Description
1	DCD
2	TD
3	RD
4	DTR
5	GND
6	DSR
7	RTS
8	CTS
9	Contact Closure

*Note! Pin 9 is used for contact closure input. This pin is not normally used by RS- 232 devices. Some laptop and desktop computer COM ports have been observed to “pull” pin 9 to ground; this will cause unexpected behavior of the contact closure function if pin 9 is not disconnected on the PC end of the cable. If this behavior is observed, make sure that pin 9 is disconnected on the PC end of the cable.

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