Shamsan N6 CIF Series Manual do Utilizador descarregar pdf (Página 15)

485 A/B 485 communication port. They are used to control devices such as

PTZ. Please parallel connect 120TΩ between A/B cables if there are

too many PTZ decoders.

1.8.2 Alarm Input Port

Please refer to the following sheet for more information.

z Normal open or Normal close type.

z Please parallel connect COM end and GND end of the alarm detector (Provide external

power to the alarm detector).

z Please parallel connect the Ground of the DVR and the ground of the alarm detector.

z Please connect the NC port of the alarm sensor to the DVR alarm input(ALARM)

z Use the same ground with that of DVR if you use external power to the alarm device.

Figure 1-10

1.8.3 Alarm Output Port

z Provide external power to external alarm device.

z To avoid overloading, please read relay parameters sheet in the User’s Manual carefully.

z RS485 A/B cable is for the A/B cable of the PTZ decoder.

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