Samsung SNP-3120 User Manual page 19

Power, Video & Communication Signal Connection
No. Name
1 VIDEO
2 GND
3 485+
4 485-
5 FG
6 AC
7 AC

M
The provided BNC cable's blue line is Video Output, while the black line is the Ground.

Power supply adaptor (AC) has no polarities.

J
The maximum power capacity of the built-in relay is 30V DC/2A, 125V AC/0.5A, and 250V
AC/0.25A.

Connecting the power connector and GND incorrectly to the NC/NO and COM ports may cause a
short circuit and fi re, damaging the camera.

When connecting the camera to an external over-rated product, use a separate relay device to
ensure proper operation.

To prevent possible inflow of lightning while in test monitoring, perform the test with the FG
terminal grounded.
Video Output
Ground
Controller Data Line
Controller Data Line
Field Ground
AC 24V
AC 24V
Usage
English _19