User's Manual

Extended Range Amplified WLAN System Guide
Version 07/18/02
4.2.1 Installing and Cabling the Antenna and Amplifier Unit
The steps listed below are applicable for the Fixed Site Extended Range Amplified WLAN System.
• Attach the (installer provided) antenna mast assembly and mounting hardware to a solid structure
on the building (i.e., the roof top, concrete bulkhead, vent pipe, etc.).
• Using the kit-included mounting hardware, secure the fixed site antenna to the top section of the
antenna mast assembly.
• Attach the kit-included Teletronics SmartAmp main (remote) amplifier unit directly beneath the
antenna element assembly using the U-bolts provided. The distance below the antenna should be
approximately 12 – 14 inches based upon maintaining an adequate feed line cable loop between
the devices.
• Connect one end (N-Male connector) of the kit-included PA-to-Antenna RF cable assembly
(minimum length listed in Table 1-1 and Table 1-2 for LMR 600 and LMR 400 type cable) to the
antenna (N-Female) connector and connect the other end of the LMR cable assembly (N-Male) to
the SmartAmp amplifier unit’s (N-Female) connector labeled ANTENNA on the amplifier.
• Connect one end of the kit-included DC-Injector-to-PA (feed line) RF cable assembly (minimum
3 feet LMR 600 or LMR 400) to the SmartAmp main amplifier unit (N-Female) connector
labeled DC-INJECTOR on the amplifier.
• Apply weather sealant tape around all cable connections made at the antenna and the power
amplifier. Wrap the entire connection, overlapping each layer slightly to ensure a weather-tight
seal. This will prevent corrosion of the connections by the weather.
• Connect a suitable grounding cable or grounding kit (installer provided) between the antenna
mast assembly and the building ground, to ground the antenna system.
• Tie down the antenna RF cable assembly to the mast every six to twelve inches using plastic tie
wraps or other cable hanging kit tools and carefully raise the antenna mast. Loosely secure it
with the mounting hardware.
• Using a leveling tool, ensure the antenna mast assembly and most importantly the omni-
directional antenna element are positioned vertically for best omni-directional beam and pattern
performance. For the point-to-point antenna, the antenna should be oriented in such a way as to
provide LOS, in order to achieve the maximum performance.
• Securely tighten the mast mounting bolts/screws.
• Route the amplifier feed line RF cable assembly via appropriate cable access conduit and pre-
installation routing plan to the equipment room or equipment enclosure box that will house the
Cisco Aironet AP radio unit, Main Amplifier unit, and the power amplifier DC-Injector module
(i.e., Telco room, network closet, or outdoor enclosure box).
• Place and mount the kit-included DC Power Injector module and module Power Supply within
the equipment room/enclosure near the Cisco Aironet radio unit. Position the module unit so that
the LED indicators are easily visible to the installer for operational condition indication and/or
visual troubleshooting diagnosis.
• Plug the DC-Injector Power Supply module’s DC-In male connector into the Injector module’s
DC-In female jack and then plug the power supply unit into the building AC power source. It is
recommended that a commercially available surge protector power strip be used for the AC
connections. Check for a green light on the DC-Injector LED for power being applied.