H3C Technologies H3C S12500 Series Switches - Manual (Page 145)

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Installation procedure
To install a lightning protector:
1. Use a double-faced adhesive tape to stick the lightning protector onto the switch chassis, and make
sure it is as close to the grounding screw of the switch as possible.
2. Measure the distance between the protector and the grounding screw of the switch, cut the ground
wire of the protector as appropriate, and securely tighten the ground wire to the grounding screw
of the switch.
3. Use the multimeter to measure whether the ground wire of the protector contacts correctly with the
grounding screw of chassis.
4. Insert the outdoor network cable into the protector's IN end, and the cable connected to the switch
into the OUT end, and look at the indicators on the lightning protector to verify that the connection
is correct.
5. Use nylon ties to bundle the cables neatly.
Installation precautions
The performance of the port lightning protector might be affected in the following cases:
• The port lightning protector is installed in reverse direction. Connect the IN end to the outdoor
network cable and the OUT end to the network port on the switch.
• The port lightning protector is not correctly grounded. After the connection, use the multimeter to
confirm that the ground wire for the protector is as short as possible to ensure its good contact with
the grounding screw of the switch.
• The installed port lighting protectors are not sufficient. If the switch has more than one network port
connected with other devices through cables outdoor, install a lightning protector for each network
port.