B-1
Appendix B Installation of Lightning Arrester for
Network Interfaces
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You can install a lightning arrester only for the 10M/100M electrical Ethernet interfaces supporting
RJ-45 connectors.
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No lightning arrester for network interface is supplied with the switch.
If an outdoor network cable should be directly led to the switch, please serially connect the lightning
arrester for the network interface before you plug this cable into the switch, thus to prevent possible
damages to the switch due to lightning strike.
Tools
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Philips or flat-blade screwdrivers
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Multimeter
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Diagonal cutting plier
Installation Procedure
1) Remove the protective paper on one side of the double-faced adhesive tape and stick it on the shell
of the arrester, remove the protective paper on the other side and stick the arrester on the chassis
of the switch. Keep the arrester as close to the grounding screw of the switch as possible.
2) Cut the ground cable of the arrester of a suitable length according to the distance between the
arrester and the grounding screw and then fasten the cable on the grounding screw tightly.
3) Use the multimeter to verify whether the ground cable of the arrester has a close touch with the
grounding screw and chassis of the switch.
4) Follow the instruction of the arrester to connect the arrester for network interface with a transit
cable. Pay attention to the direction: IN end of the cable is connected to the arrester while OUT end
of the cable is connected to the switch. After the connection, check whether the LEDs of the
interface modules are normal.
Technical parameters, installation and maintenance methods of an arrester have been given in the
arrester instruction. Read the instruction carefully before installing the lightning arrester for the network
interface.
5) Tie the cables together with nylon clips.
