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10
Port Name
Connection Function
1-16
Alarm input
port.
I/O port
There are four groups. The first group is
from port 1 to port 4, the second group is
from port 5 to port 8, the third group is
from 9 to 12, and the fourth group is from
13 to 16. They are to receive the signal
from the external alarm source. There are
two types; NO (normal open)/NC (normal
close).
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.
NO1 to NO3
3-ch 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.
C1 to C3
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.
VIDEO OUT
Video input
port
/
CVBS output
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.
