User's Manual

1
Installation and Operation Manual
CA2458 Converter/Amplifier System
1.0 Description
The CA2458 Converter/Amplifier system is a bi-directional wireless data link operating
in the 5.8 GHz band. It makes use of existing 802.11b wireless technology up-converted
to the 5.8 GHz unlicensed band. The system consists of an 802.11b wireless LAN card,
a 5.8 GHz frequency block converter (the outdoor unit or ODU), antennas and
accessories.
The CA2458 Converter/Amplifier (Converter or CA2458) outdoor unit provides bi-
directional linear frequency block conversion (translation) from the 2.4 GHz band to the
5.8 GHz band. As a system, it allows the use of existing 2.4 GHz WLAN equipment on
the 5.8 GHz band. The Local Oscillator (LO) operates at 3.328 GHz. This means a
2.412 GHz signal will go out over the air at 5.740 GHz. Currently, the 5.8 GHz band
provides relief from interference that is present on 2.4 GHz in many geographic areas
and also allows the use of this band for backbone or backhaul use.
All functions of the CA2458 ODU are transparent to the user. No adjustments of any
kind are required. Channel assignment and network set-up are both performed at the
radio card (or access point).
Installation of the CA2458 requires outdoor mounting of the Converter (at the antenna)
and indoor installation of the WLAN card, DC Injector and power supply. Coaxial cable
carries both DC power and the RF signal from the DC Injector to the Converter. All
signals passing between the DC injector and Converter are at a frequency of 2.4 GHz to
minimize cable attenuation.