41Installation procedureTo install an FMT, follow these steps, as shown in Figure 48.Step1 Align the FMT and the installation holes on the rack post.Step2 Use a Phillips screwdriver to fix each FMT with two M5×10 self-tapping screws.Figure 48 Install FMTsInstalling a port lightning arrestorNOTE:Only 10/100 Mbps RJ-45 copper Ethernet ports need to be equipped with port lightning arresters.Before connecting an outdoor Ethernet cable to an Ethernet port, install a port lightning arrester to protectthe router against lightning strokes.The following port lightning arrester can be installed on the SR6604 or SR6608. The specifications forthe port lightning arrester are as follows:• Port protective unit: Single port• Maximum discharge current (8/20μs waveform): 5 kA• Output voltage (10/700μs waveform): Core-core < 40 V, core-ground < 600 V.Installation tools• Phillips or flat-blade screwdriver• Multimeter• Diagonal pliersInstallation proceduresFollow these steps to install a port lightning arrestor:Step1 Use a double-faced adhesive tape to stick the port lightning arrester to the router. The port lightningarrester should be as close to the grounding screw as possible.
