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245U-E Wireless Ethernet Modem User Manual
Rev Version 2.24
Channel (AP Only)
The 245U-E-G radio channels 1 to 13 (depending on country) may be
configured at the access point. See “3.1 Selecting a Channel.”
The 245U-E -A radio channels can be individually set (access point only; client
ignores the selection), or left on Auto (default). Select the appropriate U-NII
groups (1, 2, 3, or 4), each having its own group of channels, maximum power,
and DFS selection.
The default radio channel for both A and G models is Auto. When set to Auto,
on startup the module will scan all available and selected channel groups
(country dependent) and pick the quietest channel.
Channel Width (STA
and Auto Channel Only)
245U-E-G stations only. When configured as a station, the module will
periodically scan the channels looking for an access point. This option is used
to speed up the access point scanning process of the client radio by only
scanning certain channel bands (5 MHz, 10 MHz, and 20 MHz) or automatically
scanning all channels. Default is 20 MHz.
Turbo Mode
(Only for fixed channels, No Auto). Selecting Turbo Mode doubles the transmit
data rate offered on a single channel. Maximum data rate up to 108 Mbps.
Only usable with other ELPRO 245U-E-A and G modules configured with the
same turbo channel. If using the Turbo mode feature, all modems in the
system will need to be configured with Turbo mode and the correct channel in
order to communicate.
Transmit Data Rate
The radio baud rate in Mega (million) bits per second (Mbps) for point-to-point
radio transmissions. The default value is Auto. Select a fixed rate to force the
radio to use the selected rate.
Fixing the TX Rate is not recommended except for advanced users.
NOTE Increasing the transmit data rate will decrease the transmit
power level. For example, selecting a 54-Mbps fixed data rate will
reduce the transmit power from 400 mW down to 125 mW. This is to
comply with 802.11 regulations.
Beacon Interval
(AP only)
This interval is the period between beacon transmissions sent by an access
point. The default value is 100 milliseconds, and it may be adjusted from 50 to
4095 milliseconds.
Max Distance
Configure the maximum distance the radio signal is expected to travel. This
allows the modem to compensate for the flight time of messages as they pass
from the transmitter to the receiver, and as the acknowledgment messages are
returned. Setting this value larger will cause a small reduction in throughput.
Setting this value too small will cause communications problems over longer
distances. Default distance is 5 km.