IC Realtime 1/2/4 Channel H.264 Network Video Server - Manual (Page 18)

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Port Name Connector Function
1～4 Alarm Input Port
1～4 I/O Port  Alarm input channel amount is 4
 When your alarm input device is using
external power, please make sure the
device and the NVS have the same
ground.
Ground end Alarm input ground end.
NO Alarm Output
Port1  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.
C
A RS485 Port RS485_A port. It is the cable A. You can
connect to the control devices such as speed
dome PTZ.
B RS485_B.It is the cable B. You can connect
to the control devices such as speed dome
PTZ.
ANT Antenna Port To connect wireless antenna in order to
receive 3G wireless signal
Power input port Input 12V DC
Power Button Power on/off button.
When connect the Ethernet port, please use crossover cable to connect the PC and use the
straight cable to connect to the switcher or router.
2.3 Connection Sample
The connection sample is shown as below..
The following figure is based on the 4-channel series product of SD backup series and HDD
backup series respectively.
2.3.1 Network system
Figure 2-6