Q-See QSNDVR16R Manual de servicio descargar pdf (Pagina 8)

8/16 Channel Digital Video Recorder

7

2. Open/Close output

A: N.O. Normal Open; closes when triggered. DVR must be set as low voltage alarm.

B: N.C. Normal Close; opens when triggered. DVR must set as high voltage alarm.

Please refer to the diagram below, channel 2 to channel 16 are similar to channel 1.

Alarm output

There are three alarm output pins, the status of these pins are illustrated below:

N O

. .

COM

N C

. .

N O

. .

COM

N C

.

.

Before alarm

After alarm

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