Swann DVR4-NET Manuel d'utilisateur télécharger pdf (Page 20)

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 Input” 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.

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

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Swann DVR4-NET Manuel d'utilisateur Page 20