3-11
Step3
Use a flat-blade screwdriver to fix the two screws on the DC plug clockwise to secure the plug to the DC
receptacle (see callout 2 in
Figure 3-17
).
Step4
Connect the other end of the DC power cord to the external –48 VDC equipment-room power supply
system.
Figure 3-17
Connect a DC power cord
Pay attention to the positive (+) and negative (-) marks on the power cord to avoid connection mistakes.
Verifying the Installation
Before powering on the switch, check that:
z
There is enough space for heat dissipation around the switch, and the rack or workbench is stable.
z
The ground wire is connected.
z
The selected power module matches that required by the switch.
z
The power cables are properly connected.
z
All the interface cables are cabled indoors. If there is any cable wired outdoors, verify that socket
strip with lightning protection and lightning arresters for network ports have been properly
connected.