DGS-3710 Series Layer 2 Managed Gigabit Switch Hardware Installation Guide
18
Figure 2–6 Connecting a Switch to the DC Power source
NOTE
: Use a minimum 18 gauge (AWG) wire. All power connection wiring should conform to the
rules and regulations in the National Electrical Code (NEC), as well as any local codes. A branch
circuit over current protection must be rated below 20A.
Power Failure
The AC power and DC power of the device will backup each other immediately when one of the power sources fail. If
both power sources fail, unplug the Switch. When the power source has been restored, plug the Switch’s power back
in.
Alarm Connector (RJ45)
The Alarm (RJ45) port pin assignment is layed out in the figure below.
Figure 2–7 Alarm (RJ45) Connector
Alarm Connector Port
Contact
Description
1
GND
2
Input (Channel 1)
3
GND
4
Input (Channel 2)
5
GND
6
Input (Channel 3)
7
GND
8
Input (Channel 4)
