8
2.2 Rear View
RS-232
ALARM DC12V
RS-485
hi-z
75
AUDIO
IN
IN
OUT
OUT
MONITOR
CH1 CH2 CH3 CH4
ETHERNET
I/O
2531 32 3326 2829 30 34 35 36 37
VIDEO IN Connector: These 4 BNC connectors are used to connect the video output from a camera
Hi-Z/75 Ω Individual termination: T hese 4 switches are used to set the impedance of each loop
between 75 and Hi-Z.
RS-232 Port: The RS-232 communication port functions as a connector to an external control device.
Please refer to RS-232 & RS-485 Protocol for more details.
MONITOR Connector: The connector provides the unit’s composite video to a display device.
AUDIO OUT: This connector is used to connect the device’s audio input.
AUDIO IN Connector: This connector is used to co nnect the audio output from a camera or other
devices to the DVR.
ETHERNET 10/100 Connector: This is one standard RJ- 45 connector for 10/100 Mbps Ethernet
networks.
RS-485 Port: The RS-485 com munication ports function as connectors when two or more units are
serially connected to an external control device.
ALARM I/O : This is a 9-PIN D-SUB connector including SWITCH OUT, GROUND, ALARM OUT, DISK
FULL, RECORD IN, ALARM RESET, and ALARM IN for connectin g with external devices. Please
refer to the next section for details.
Wire Catch: The wire catch secures the power cord and keeps it in place (so that it does not droop or
hang loosely).
Ground Screw’s: The ground screw is for chassis terminal.
DC Power Jack: The inlet connects to the external power supp ly. 12 VDC, 5A UL Listed Class 2
Power Supply.