Intermec WA21 System Manual page 110

Chapter 4 — Configuring the Radios
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3 Click Submit Changes to save your changes. To activate your changes,
from the menu bar click Save/Discard Changes, and then click Save
Changes and Reboot. For help, see "Saving Configuration Changes"
on page 33.
802.11a Radio Advanced Parameter Descriptions
Parameter Description
Power Output Level Set the transmitted power level:
Maximum: Sets the output power to the highest level supported
by the radio.
Medium: Sets the output power to a lower level than the highest
level supported by the radio.
Low: Sets the output power to a level higher than the lowest
level supported by the radio.
Minimum: Sets the output power to the lowest level supported
by the radio.
Lowering the power output level reduces the radio coverage for
this area and reduces the range for this radio.
Data Rate Choose the rate at which the access point transmits data. In
general, higher speeds mean shorter range and lower speeds mean
longer range.
If you choose the Speed Mode to be 802.11 compliant, you can
set this rate to 54, 48, 36, 24, 12, or 6 Mbps.
Allow Data Rate Determines if you want the radio to drop to a slower data rate
Fallback when it has trouble communicating with another radio.
Intermec recommends that you leave this check box checked or
you may affect radio network performance. Clearing this check
box is only used when performing site surveys.
Basic Rate Appears only if the Allow Data Rate Fallback parameter is
enabled.
Choose the rate at which the access point transmits multicast
and beacon frames. In general, higher speeds mean shorter range
and lower speeds mean longer range. Do not set this rate higher
than the maximum rate at which your end devices can receive
multicast frames. You can set this rate to 24, 12, or 6 Mbps.
This parameter should usually be left at the default of 6 Mbps.
Reservation You may need to set a threshold value, which is the largest data
Threshold frame that can be transmitted without reserving airtime. Airtime
is normally reserved to help prevent collisions with other
transmitters.
If you set this threshold to 2347, this parameter is disabled.
Fragmentation Specifies the largest data frame that can be transmitted without
Threshold fragmentation. On certain radios, the fragmentation does not
occur unless the radio detects interference. Larger frame sizes can
improve throughput on a reliable connection. Smaller frame sizes
can improve throughput on a poor connection.
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