11Chapter 2: InstallationairFiber A F-11FX U ser G u ideUbiquiti Networks, Inc.Connecting PowerFollow the instructions for the source of power that youare using: Power over Ethernet or DC Power.Power Over Ethernet1. Connect the Ethernet cable from the DATA port of theAF‑11FX to the POE of the adapter.WARNING: Use only the included adapter, modelGP-C500-120G. Failure to do so can damagethe unit and void the product warranty.2. Connect an Ethernet cable from your LAN to theadapter’s LAN port.3. Connect the Power Cord to the adapter’s power port.Connect the other end of the Power Cord to a poweroutlet.DC Power1. Connect a DC power cable to the Terminal Block. (The+VDC and GND can be connected to either terminal.)2. Connect the other end of the DC power cable to a DCpower supply that supplies +50VDC.WARNING: Applying a negative voltage such as‑48VDC will damage the radio.3. Connect the DC power supply to its source.Surge ProtectionFor added protection, install two surge suppressors, suchas the Ubiquiti Ethernet Surge Protector, model ETH‑SP,at the end of each link. Install the first surge protectorwithin one meter of the airFiber DATA port, and install thesecond surge protector at the ingress point of the locationhousing the wired network equipment.Ground to Pole, Tower,or Grounding Block:Max. 1 m from AF-11FXMax. 1 mairFiber PoE AdapterEdgeRouter™Power SourceETH-SPETH-SPAF-11FXMounted onAF-11G35