6NOTE:Use electromagnetic shielding when necessary.Lightning protectionTo protect the router from lightning better, do as follows:• Make sure the grounding cable of the chassis is well grounded.• Make sure the grounding terminal of the AC power receptacle is well grounded.• Install a lightning arrester at the input end of the power supply to enhance the lightning protectioncapability of the power supply.• Install a special lightning arrester at the input end of outdoor signal lines (for example, E1/T1 line)to which interface modules of the router are connected to enhance the lightning protectioncapability.Rack-mountingBefore mounting the router in a standard 19-inch rack, adhere to the following requirements:• The rack has a good ventilation system.• The rack is sturdy enough to support the router and installation accessories.• Make sure that the size of the rack is appropriate for the router, and that there is enough clearancearound the left and right sides of the router for heat dissipation.• For heat dissipation and device maintenance, make sure the front and rear of the rack should be atleast 0.8 m (2.62 ft) away from walls or other devices, and that the headroom in the equipmentroom should be no less than 3 m (9.84 ft).Installation toolsThe tools in the table may be used for installing the routers.Flat-bladescrewdriver Phillips screwdriver Needle-nose pliers Wire-strippingpliers Diagonal pliersRJ45 crimping pliers Mark pen Multimeter Network cabletester
