Samsung SNB-7000 User Manual page 21

Alarm I/O Wiring Diagram
ALARM IN
1
ALARM OUT
2
ALARM COM 3
GND
4
RXTX+ 5
RXTX-
6
Connecting to the I/O port box
Connect the Alarm I/O signal to the corresponding port of the rear port box.
1 2 3 4 5 6
1 : ALARM IN 4 : GND
2 : ALARM OUT 5 : RS-485+
3 : ALARM COM 6 : RS-485-
• ALARM IN : Used to connect the alarm input signal.
• ALARM OUT : Used to connect the alarm output signal.
• ALARM COM : Common port where the alarm output signal is connected.
• GND : Used for earth-grounding.
• RS-485+ : Communication port for RS-485 receiver (+).
• RS-485- : Communication port for RS-485 receiver (–).
Connecting an external RS-485 device
Connect the camera with an external device using the [RS-485 +, -] ports.
You can control the pan/tilt operations of the camera via RS-485 communications.
(5mA sink)
(30VDC 2A,
125VAC 0.5A MAX)
VIDEO
AUDIO OUT
SD CARD
SD SYSTEM POWER
NETWORK
1 2 3 4 5 6
1 : ALARM IN 4 : GND ACT LINK
2 : ALARM OUT 5 : RS-485+
GND
3 : ALARM COM 6 : RS-485-
AUDIO IN
RESET
AC 24V
DC 12V
English _21