Pelco CM9760-KBR, C540M (6/98) Appendix C. Keyboard Connector Pin-Outs, Pelco Manual C540M 6/98

Appendix C. Keyboard Connector Pin-Outs

	VOLUME
RELAY 12C COM 3 COM 2 COM 1	RESET
	BUTTON

DIP SWITCHES

RS-422 Serial Port

Main port used for power into keyboard, and for comm’s link to Pelco CM9760-CC1 CPU. It is also used to drive Camera Control Receiver/ Drivers in direct mode. These I/O lines are connected to 8 way RJ socket JP1 as shown below. Incoming DC is also brought in via this connector.

JP1 Pin	Function	JP1 Pin	Function
1	RS422 Tx +	5	Gnd (0 VDC in)
2	RS422 Tx -	6	–
3	–	7	RS422 Rx -
4	+12 VDC in	8	RS422 Rx +

RS-422 Serial Port

A second RS422 port that can be used to support other equipment. These I/O lines are connected to 8 way RJ socket as shown below.

JP2 Pin	Function	JP2 Pin	Function
1	RS422 Tx +	5	_
2	RS422 Tx -	6	–
3	–	7	RS422 Rx -
4	_	8	RS422 Rx +

RS-232 Serial Port

An RS-232 port that can be used for such things as keyboard to key- board key definition download/upload. These I/O lines are connected to four-pin RJ socket JP3 as shown below.

JP3 Pin	Function
4	Gnd
3	–

2RS-232 RX In

1RS-232 TX Out

PIN 1

34 Pelco Manual C540M (6/98)