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2.2.2.2 SVR-1680C, SVR-1660C, SVR-1645
No. Input/Output
terminal name
Function
1 POWER IN Socket for AC 100V ~ AC 240V power cord.
2 CH1~16 Connection terminal for camera BNC input.
3 LOOP OUT Connection terminal for camera BNC output (loop).
4 MONITOR 1 ~ 2 Connection terminal for monitor BNC output.
5 AUDIO IN(RCA) RCA audio jack for RCA input.
6 AUDIO OUT Audio jack for speaker output.
7 GROUND Ground terminal between DVR and external device.
8 ETHERNET Ethernet port for network connections (RJ-45).
9 STORAGE External storage connection port (Function not supported in
the current version)
10 eSATA Connection terminal for external eSATA HDD or HDD for
backups.
11 VGA OUTPUT Output port for PC monitor.
12 Serial Port (Terminal
Block) RS-232C/485/422
Connection terminal for expanded controller, speed dome
camera, etc.
13 Serial Port (D-Sub) RS-232C D-SUB connector.
14 RELAY OUT Connection terminal for relay output.
15 SENSOR IN Connection terminal for sensor input.
16 AUDIO IN(D-SUB) Connection terminal for audio output D-SUB.
17 D-I/O Connection terminal for DIGITAL IN/OUT.