User's Manual

DRAFT - CISCO CONFIDENTIAL
1-3
Cisco Aironet 1400 Series Wireless Bridge Hardware Installation Guide
OL-4072-01
Chapter 1 Overview
Key Features
The power injector uses an external 48 VDC power module and after detecting the presence of the
bridge, injects the DC voltage into the dual coax cables to power the bridge.
Note The power injector and the power module should not be placed in an outdoor unprotected environment.
External Antenna
The bridge is available with an N-type RF connector on the front of the unit (see Figure 1-1) for an
external 5.8-GHz antenna. The supported external antennas connect to the bridge antenna connector
using the antenna’s 4.9 ft (1.5 m) long coax cable.
– 9 dBi omnidirectional external antenna with vertical polarization
– 9.5 dBi sector external antenna
– 28 dBi dish external antenna
Note To meet regulatory restrictions, the external antenna bridge configuration and the external antenna must
be professional installed.
Integrated Antenna
The bridge is available with an integrated 22.5 dBi patch array antenna. The antenna is covered with a
special radome cover to protect the antenna from environmental elements. When configured with the
integrated antenna, the antenna polarization is controlled by the mounting orientation of the bridge. The
bridge must be physically rotated 90 degrees to obtain either horizontal or vertical polarization. A special
polarization mark is designed into the bridge housing to indicate the polarization direction.
Dual-Coax Ethernet Ports
The bridge’s dual Ethernet ports accepts a pair of 75 ohm F-type connectors, linking the bridge to your
100BASE-T Ethernet LAN through the power injector. The dual coax cables are used to send and receive
Ethernet data, plus the cables supply inline 48 VDC power from the power injector. For the location of
the ports, refer to Figure 1-2.
Tip You can connect the dual coax cable connectors to either of the bridge’s Ethernet ports. The bridge
senses the Ethernet signals and automatically switches internal circuitry to match the cable connections.
Metal Enclosure
The bridge uses a metal enclosure that supports outdoor operating environments and supports an
industrial temperature operating range (refer to Bridge Specifications, page 1-6).