User's Manual

Detailed Radio Configuration / Diagnostics RLX2 Series ♦ 802.11a, b, g, n
User Manual Industrial Hotspot
Field
Description
current operating conditions. The system attempts to use a 400
microsecond Guard Interval, but will fall back to an 800 microsecond
Guard Interval if excessive data corruption is detected. The radio will
periodically attempt to resume using a 400 microsecond Guard Interval
as conditions improve. A 400 microsecond Guard Interval results in
about 11% more throughput than using a 800 microsecond guard
interval. The user has no control of the Guard Interval.
As seen in the table above, absolutely best throughput requires
802.11n wide mode, more than one antenna, and a RF environment
capable of supporting a 400 microsecond Guard Interval.
Max Basic Rate
In addition to the Data Rate setting which controls generic data traffic,
the Basic Rate setting adjusts the rate at which control packets such
as Beacons and ACKs are sent at as well as packets that need to go
to the whole network such as Broadcasts. Because these packets are
intended for the whole network, the Max Basic Rate setting of the
Master is advertised to each of the radios in the network through
Beacons. Each radio, other than the Master, then inherits the Max
Basic Rate setting of the Master. Therefore the setting only needs to
be made in the Master radio. The setting in each of the other radios is
disregarded.
Immediate Broadcasting
Forward multicast traffic immediately, rather than waiting for specific
time intervals.
Block General Probe
Requests
Do not respond to general probe requests that are not specific to the
radio's SSID.
Range
Allows the radios to account for round trip delays. The Range settings
should be the same in all radios in the network and should be at least
large enough to account for the length of any links. However,
increasing the Range beyond what is necessary can cause a slight
decrease in throughput. The default Long range is 25km, which is valid
for all operating modes of all radios.
TX Power Attenuation
Allows reduction of the radio’s output power.. The range of attenuation
is from 0 to 18 dB. Radios are shipped from ProSoft configured for
maximum output power. This is either the maximum output power of
the radio itself, or the maximum power allowed by country for which
the radio is configured. However, it is possible to attach an antenna
with so much gain that the maximum legal allowed radiated power is
exceeded. This control allows the reduction of power when using such
antennas so that output power is still within legal limits. See section
8.4 for information on output power regulations by the FCC for the
USA.
Note that higher gain antennas provide better performance in both
receive and transmit functions, while output power only increases
transmit performance.
Page 74 of 161 ProSoft Technology, Inc.
November 29, 2012