19
2.Video and Audio Connection
The DVR can support up to 4 cameras video input at the same time.
There are two steps for camera installation.
1.Connect the Video Signal Line to the DVR channel input.
2.Connect the power adaptor jack to the camera.
The DVR can connect 4 audio input channel's, but you can only select one for recording.
To display the DVR picture, the DVR's video output signal should be transferred to your TV set
or monitor. Any TV set that has a “
Video Inpu
t” terminal is suitable for displaying the picture.
The figure above shows the
default video and audio signal line connection.
Note: You can only record one audio input at a time, so you can only connect one audio
input at a time also. If you connect the audio to
cam1
, you cannot connect audio to any of the
sockets for
cam 2
to
cam 4
. You should disconnect them.
20
3.Alarm Connection
The DVR can support up to 4 alarm inputs and three alarm outputs.
Alarm input:
There are two types of alarm input.
1. Voltage output 5V and 0V
A:
If the sensor outputs high voltage (5V) normally and outputs low voltage when triggered
(0V), then users must set DVR for low voltage alarm.
B:
If the sensor outputs low voltage (0V) normally and outputs high voltage when triggered
(5V), then users must set DVR for high voltage alarm.
2. Open/Close output
A: N.O. Normally open/close when triggered. DVR must be set for low voltage alarm.
B: N.C. Normally closed/open when triggered DVR must be set for high voltage alarm.
This diagram shows an example of an
alarm output connection.
Alarm output
There are three alarm output pins, the status of these pins are illustrated as below
N
.
O
.
COM
N
.
C
.
N
.
O
.
COM
N
.
C
.
Before
alarm
After
alarm
N
.
O
.
COM
N
.
C
.
Alarm
5V
