L Series - IC Realtime Network Video Recorder User Manual

Port Name
NO1～NO3
C1～C3
A
B
Power button

2.2.2 L Series

The L series rear panel is shown as below. See Figure 2-5.
Please refer to the following sheet for detailed information.
Port Name
Power button
Power input
port
Connection
Alarm input port
ground end
3-ch alarm
output port
RS485
communication
port
Power port
Connection
Function
open)/NC (normal close).
When your alarm input device is using
external power, please make sure the
device and the NVR have the same
ground.
Alarm input ground end.
3 groups of alarm output ports. (Group 1：
port NO1～C1,Group 2:port NO2～
C2,Group 3:port NO3～C3）).Output
alarm signal to the alarm device. Please
make sure there is power to the external
alarm device.
NO：Normal open alarm output port.
C：Alarm output public end.
RS485_A port. It is the cable A. You can
connect to the control devices such as speed
dome PTZ.
RS485_B.It is the cable B. You can connect to
the control devices such as speed dome PTZ.
Input 12V DC.
Power on/off button.
Figure 2-5
Function
Power on/off button.
Input AC 220
19