User's Manual

Ground Based Access P oint (GAP) Hardw are Installation Product Description
Product Description
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The Motorola Ground – based Access P oint (GAP) hardware is made up of three main component
assemblies; the Base Transceiver (sub) System (BTS) and the Battery Backup Unit (BBU). T wo
configurations are available; an indoor GAP , and an outdoor GAP . The indoor configuration is
mounted in a standard 19–inch rack. The outdoor configuration is housed in two (typical)
weather resistant cabinets. The outdoor cabinets may be mounted side -by -side, or stacked
on top of each other .
The GAP BTS includes the Base Control Unit (B CU) cage and Transceiver modules (TRX) cage.
The B CU contains signal processing and interface hardware. The TRX module contains an
interface for the B CU , the TX (transmit) and RX (receive) components, and RF interface for the
RF antenna(s). The RF interface is an external connection between the TRX module(s) and the
RF antenna(s).
The GAP BBU (battery cabinet) is typically used in an outdoor configuration. The BBU contains
batteries and/or additional TRX module cages for multi sector configurations. F or indoor
configurations, the battery supply would come from the battery room at the customer site.
68P09286A73 -1 1 -3
PRELIMINARY - UNDER DEVELOPMENT JUL 2007