2-6
Connecting the grounding cable
CAUTION:
•
Correctly connecting the grounding cable is crucial to lightning protection and EMI protection.
Before installing or using the AP, connect a grounding cable to the AP correctly.
•
Connect the grounding cable to the engineering ground in the equipment room. Do not connect
it to a fire main or lightning rod.
•
Lightning arresters are not required for antenna ports if the AP is grounded reliably.
To connect the grounding cable to the AP:
1.
Use a Phillips screwdriver to remove the grounding screw from the grounding hole in the rear
panel of the AP.
2.
Attach the grounding screw to the ring terminal of the grounding cable.
3.
Use a Phillips screwdriver to fasten the grounding screw into the grounding hole.
4.
Connect the other end of the grounding cable to the grounding cable in the train compartment
or the power distribution cabinet.
Figure2-9 Connecting the grounding cable
Connecting RF cables
CAUTION:
•
In areas where thunderstorms frequently occur, purchase and install lightning arresters for the
antenna ports.
•
Install lightning arresters for the antenna ports in sequence from left to right or from right to left.
•
Lightning arresters are not required for the antenna ports if the AP is grounded reliably.
M4
1.4N·m
PH2#