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User’s Manual
12
Video Input
A group of BNC connectors are available for video input streams from
installed cameras.
Alarm I/O & RS485
The unit provides an alarm I/O and RS485 port that offers user the flexibility
required to connect the unit to the other device. The definitions of pins are
listed in the below table:
Pin Definition for 4ch-Model:
Pin Definition Pin Definition
1
ALARM OUT O
9
Alarm Out C
2
ALARM OUT COM
10
GND
3
RS485 D/R+
11
-
4
RS485 D/R-
12
-
5
ALARM In 1
13
-
6
ALARM In 2
14
-
7
ALARM In 3
15
-
8
ALARM In 4
Power Jack
The MPEG-4 DVR has a free voltage DC power connection jack. Please
connect the power adapter that ships with the unit.
NOTE: Use of other power adapter may cause overloading.