Alarm Connection; Alarm Port; Alarm Input Port; Alarm Input And Output Port - Panasonic K-NL408KT/G User Manual

2.3 Alarm Connection

2.3.1

Alarm Port

The alarm port is shown as below. See Figure 2-3.
Icon
1～4
N1,N2,C1,C2
A/B
2.3.2

Alarm input port

Connect the positive end (+) of the alarm input device to the alarm input port (ALARM IN 1～4) of the
NVR. Connect the negative end (-) of the alarm input device to the ground end ( ) of the NVR.
Note
When connect the ground port of the alarm device to the NVR, you can use any of the GND ports

( ).
Connect the C port of the alarm device to the alarm input port (ALARM) of the NVR.

When there is peripheral power supplying for the alarm device, please make sure it is earthed with

the NVR.
2.3.3

Alarm input and output port

There is peripheral power supplying for the external alarm device.

In case overload may result in NVR damage, please refer to the following relay specifications for

detailed information.
A/B cable of the RS485 is for the A/B cable connection of the speed PTZ.

Figure 2-3
Function
ALARM1～ALARM4. The alarm becomes activated in the
low level.
Two N activation output groups. (On-off button)
GND
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.
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