8
2.2 Rear View
SD Card
RS-232
ALARM
DC12V
RS-485
hi-z
75
AUDIO
IN
IN
OUT
OUT
MONITOR
ETHERNET
I/O
25
31 32
33
27
26
28
29 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:
These 4 switches are used to set the impedance of each loop
between
75
Ω
and Hi-Z.
SD
CARD
Slot
:
This is used for system software updating and archiving/accessing critical images.
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 links the unit’s composite video to a display device.
AUDIO OUT:
This connector is used to link the device’s audio input.
AUDIO IN
Connector
:
This connector is used to connect 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 communication 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 the
SWITCH OUT, GROUND, ALARM OUT,
DISK FULL, RECORD IN, ALARM RESET,
and
ALARM IN
items
for connecting 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 the chassis terminal.
Plug Inlet:
The inlet connects to an external power supply. Connect the 12 V DC UL-listed Class 2
Power Supply.
