Pelco C662M-E DVR User Manual


 
C662M-E (5/03) 59
Connecting an Alarm Unit
To connect a CM9760-ALM to a DX9000 recorder using RS-232 communication:
1. Connect a null modem cable from the alarm unit’s RS-232 port to the COM 1 or COM 2 port on the recorder.
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 COM 1 or COM 2 port on the recorder 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 63. Connecting a CM9760-ALM
NOTE: You can also connect a CM9760-ALM to an IDE-compatible recorder.
DX9008F-C
USE EITHER
COM 1 OR COM 2
RS-232 TO RS-422
CONVERTER
CM9760-ALM
NULL
MODEM
CABLE