Dahua SD6C230U-HNI Installation Manual page 19

Figure 2-16
2.5.2.2 Cable Connection
Buckle the safety hook of speed dome on the quick mount connector; connect the integrated
cable reserved by wall-mounted bracket to the corresponding power cable, video cable, audio
cable, RS485 control cable, alarm cable, network cable, high-frequency cable and optical fiber
cable etc. of the multi-functional combination cable of the speed dome (according to requirement),
and then use insulated rubber tape to twine the cable connection well to make it waterproof,
which is shown in Figure 2-16.
Note
During actual installation, make sure the wire diameter of the cable which is to connect to RS485
control cable can't be too big; otherwise it will affect the control effect. Please refer to appendix 3
RS485 bus for relevant introduction.
2.5.2.3 Alarm Cable Connection
The alarm cable connection mode and config steps are shown as follows:
Step 1
Connect alarm input device to the ALARM IN and ALARM GND of the user cable.
Step 2
Connect alarm output device to the ALARM OUT and ALARM COM of the user cable, alarm
output is the relay switch output.
Step 3
Open the device WEB interface, make corresponding settings to the alarm input and output
device in "Setup > Event > Alarm Setup". The alarm input of WEB is corresponding to the alarm
input of the user cable. It is to set the corresponding NO and NC output according to the high and
low level signal generated by alarm input device when alarm triggers.
Step 4
Set the alarm output situation of user cable on the WEB.
2.5.2.4 Connect Speed Dome GND Cable
Connect the power line YELLOW & GREEN of the combination cable to the lightning protection
device, and make sure the lightning protection device is well grounded.
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