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12
Port Name
Connection Function
VGA
VGA video
output port
VGA
VGA video output port. Output analog video
signal. It can connect to the monitor to view
analog video.
1-3
Alarm input
port 1-3.
I/O port
Alarm input port.
When your alarm input device is using
external power, please make sure the
device and the NVS have the same
ground point.
Alarm input
port ground
end
Alarm input ground end.
NO
Alarm output
port
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.
C
A
RS485
(RS-485)
communication
port
RS485_A port. It is cable A. You can connect
to the control devices such as speed dome
PTZ.
B
RS485_B.It is cable B. You can connect to
the control devices such as speed dome
PTZ.
Power input
port
/
Input 12V DC.
Power button
/
/
Power on/off button.
PoE PORTS
/
/
Built-in Switch supports PoE function.
Power input
port
/
Switch power port. Input DC 48V.
MIC IN
Audio input
port
/
Bidirectional talk input port. It is to receive the
analog audio signal output from the devices
such as a mike phone or pickup.
MIC OUT
Audio output
port
/
Audio output port. It is to output the analog
audio signal to the devices such as the sound
box.
Bidirectional talk output.
Audio output on 1-window video monitor.
Audio output on 1-window video
playback.
eSATA
eSATA port
/
External SATA port. It can connect to a
device with a corresponding SATA port.
Please jump the HDD when there is a
peripherally connected HDD.
