User Manual

Advanced WaveLAN Parameters
Transmit Rate
4-6 WaveLAN IEEE 802.11 PC Card User’s Guide
Optionally, you can select to disable the Auto-Transmit Rate Select
mechanism, by “fixing” the Transmit Rate to the selected user-
defined preference. You are advised however to do so only in
special circumstances, typically upon advice of a WaveLAN IEEE
expert or WaveLAN Technical Support representative.
■ Use the default “High” with Auto-Transmit Rate Select rate
(i.e. the Fixed tick box is cleared) to in regular networking
environments. This setting will allow your WaveLAN card to
operate at the maximum data rate as supported by the
hardware:
— Ethernet equivalent speed for WaveLAN IEEE Turbo cards.
— IEEE 802.11 Standard speed for regular WaveLAN IEEE
802.11 cards.
■ Use “High - Fixed” data rate only in networking environments
where:
— You are certain that all wireless devices can communicate
at the highest Transmit Rate, and
— Where performance appears to slow down as a result of
many retransmissions, even though the wireless coverage
provides an “Excellent Radio Connection”.
This situation may occur in exceptional cases where for
example Microwave ovens in the WaveLAN Signal path
interfere with WaveLAN data communication.
■ Use “Standard” in Ad-hoc wireless workgroups, where the
wireless peers in the workgroup have been equipped with
standard WaveLAN IEEE adapters, that do not support the
Medium and High data rates.
■ Use “Low - Fixed” only in networking environments where
range of the wireless connection is more important than speed.
This setting will “instruct” your WaveLAN adapter to conserve
resources by not attempting to (re-)transmit data at higher data
rates.