Instruction Manual
13 
2.6 Connections  
• Connecting to the RS-485  
The dome camera can be controlled remotely by an external device or control system, such as a 
control keyboard, using RS-485 half-duplex serial communications signals. 
• Connecting HD-TVI Output connector  
Connect the HD-TVI output (BNC) connector to the monitor or video input. 
• Connecting CVBS Output connector  
Connect the CVBS output (BNC) connector to the monitor or video input. 
• Connecting Alarms  
- A1,A2,A3,A4 (Alarm Input 1,2,3,4)  
You can use external devices to signal the dome camera to react on events. Mechanical or 
electrical  switches  can  be  wired  to  the  A1,A2,A3,A4  (Alarm  Input  1,2,3,4)  and  G  (Ground) 
connectors.  
See Chapter 3 — Program and Operation for configuring alarm input. 
- G (Ground)  
NOTE: All the connectors marked G or GND are common. 
Connect the ground side of the alarm input and/or alarm output to the G (Ground) connector. 
- AO1,AO2 (5VTTL Alarm Output 1,2)  
The dome camera can activate external devices such as buzzers or lights. Connect the device 
to the AO1,AO2 (Alarm Output 1,2) and G (Ground) connectors. 
See Chapter 3 — Program and Operation for configuring alarm output.  
• Connecting the Power  
Connect power of 12VDC or 24VAC for the dome camera. 
When using a 12VDC adapter, connect the positive (+) pole to the ‘+’ position and  
the negative (-) pole to the ‘-’ position.  
Use satisfy clause 2.5 of IEC60950-1/UL60950-1 or Certified/Listed Class 2 power source only. 










