Pelco DX9100 installation manual Connecting An Alarm Unit

CONNECTING AN ALARM UNIT

You can connect a maximum of four alarm units to a recorder.

To connect a CM9760-ALM to a DX9100 recorder using RS-232 communication:

1.Connect a null modem cable from the alarm unitÕs RS-232 port to the recorderÕs RS-232 port.

2.Set the DIP switches on the alarm unit for RS-232 communication. Refer to the CM9760-ALM Installation/Operation manual.

If using RS-422 communication:

1.Connect a cable from the alarm unitÕs RJ-45 COM IN port to the recorderÕs RS-232 port via an RS-232 to RS-422 converter.

2.Set the DIP switches on the alarm unit for RS-422 communication. Refer to the CM9760-ALM Installation/Operation manual.

RECORDER

	1	4	9	12	5	8	13	16
Term		75	Term	75	Te rm	75	Te rm	75
Loop		HI-Z	Loop	HI-Z	Loop	HI-Z	Loop	HI-Z
								Re l	Alarm Input s	Re l		Alarm Input s
In
Out	1	2	3	4	5	6	7	8
								1	1 2 3 4 5 6 7 8	Co m 2	9 10 11 12 13 14 15 16 Com
In
Out	9	10	11	12	13	14	15	16		AUDIO INPUTS
									1	5	9	13
									2	6	10	14
									3	7	11	15
				OR					4	8	12	16

RS-232 TO RS-422

CONVERTER

NULL MODEM CABLE

CM9760-ALM

Figure 69. Connecting a CM9760-ALM

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