58 C636M-E (4/05)
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 unit’s RS-232 port to the recorder’s 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 unit’s RJ-45 COM IN port to the recorder’s 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.

Figure 69. Connecting a CM9760-ALM

RECORDER

RS-232 TO RS-422
CONVERTER
CM9760-ALM
NULL
MODEM
CABLE
In
Out
12
In
Out
34567891011 12 13 14 15 16
Term
Loop
14
75
HI-Z Term
Loop
912
75
HI-Z Term
Loop
58
75
HI-Z Term
Loop
13 16
75
HI-Z
AUDIOINPUTS15913261014371115481216
Rel AlarmInputs Re l AlarmInputs
112345678Com2910111213141516Com
OR