I.R.I.S. 808 Digital Video Recorder - Manual (Page 17)

2.3 Back Panel (Outer Chamber)
1. Video In/Out & I/R Remote Connector
Connect to Video In/Out & I/R Remote Cable.
(See Diagram Below for DVR08 Video Connections)
2. Audio In/Out & Y/C Out Connector
Connect to Audio In/Out & Y/C Out Cable.
3. Main Monitor Output VGA Connector (VGA, optional)
Connect VGA monitor to the optional D-SUB 15-pin female connector for
main monitor display.
4. RS-232 Connector (RS-232 #1, RS-232 #2 (optional))
Connect this connector to PTZ camera(s) or GPS sensor.
5. Alarm Output Connectors (ALARM OUT 1-2)
Connect these connectors to 1 Normally Closed (NC) alarm outputs (1)
and 1 Normally Open (NO) alarm outputs (2).
6. RS-485 Connector
Connect this connector to RS-485 compatible PTZ camera(s). Please
refer to the manuals come with the RS-485 compatible devices for the
correct settings.
7. Alarm Input Connectors (ALARM IN 1-4)
Connect these connectors to external devices such as sensors or door
switches.
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