13
3
(A OUT)Audio output
connect audio output device, standard BNC interface
4
(V OUT) Video output
connect monitor, local video signal output
5
Alarm input and output.,RS485
and RS232
connect alarm input, alarm output device and PTZ
6
VGA interface
connect VGA display device, such as PC VGA display
7
RJ45 interface(UTP)
connect network
8
USB interface
connect USB device. Up-side link is USB2.0 which adapt to USB
storage device. Down-side link is USB1.1 which adapt to USB mouse.
9
intercom output
audio output when connecting with DVR_WEB, this port will occupy
the signal from
“
A OUT
”
, only one of them can be took.
10
intercom input
audio input when connecting with DVR_WEB, this port will occupy
the signal from
“
V OUT
”
, only one of them can be took.
11
power supply(DC 12V)
12V volts D.C. input
Section 4
External alarm in/out connection
Alarm in
The alarm input is NO/NC input, and this DVR has 4 ports for alarm input.
While sensor signal output is connected to DVR input, the signal port is connected to
“
1-4
”
port of ALARM IN,
GND port connect to GND port. Default alarm input mode is
“
NO
”
. So ALARM IN port connect to GND will be
considered as an alarm input; ALARM IN port disconnect with GND or has a high voltage (5V) input will be
considered as no alarm input by default;
Fig. 3
Note: external input voltage can not be higher than 5V.
Alarm out
Alarm output is NO/NC output, and this DVR has 1 port for alarm output.
When
“
NO1
”
and
“
COM1
”
was off, the alarm output disables, otherwise
“
NO1
”
and
“
COM1
”
was connected,
