RELAY UNIT CONNECTIONS
You can connect up to four relay units to each viewstation. The CM9760-REL should be used with third-party matrix switchers for hard-wired alarm integration.
To connect a CM9760-REL to a DX9100 viewstation using RS-232 communication:
1.Connect a null modem cable from the relay unit’s RS-232 port to the viewstation’s RS-232 port.
2.Set the DIP Switches on the relay unit for RS-232 communication. Refer to the CM9760-REL Installation/Operation manual.
If using RS-422 communication:
1.Connect a cable from the relay unit’s RJ-45 COM IN port to the viewstation’s COM 1 or COM 2 port via an RS-232 to RS-422 converter.
2.Set the DIP Switches on the relay unit for RS-422 communication. Refer to the CM9760-REL Installation/Operation manual.
VIEWSTATION
| RS-232 TO RS-422 |
| CONVERTER |
| | CM9760-REL |
| PWR | 100-240 VAC |
OUT | IN | |
| RS232 | 50/6 Hz |
| |
OR
VIEWSTATION
| | NULL | |
| | MODEM |
| | CABLE | |
| | | CM9760-REL |
| 56 | PWR | 100-240 VAC |
| | |
| OUT | IN | |
57 | 64 | RS232 | 50/6 Hz |
| | |
Figure 97. Connecting a CM9760-REL for DVR Management