Cooper Bussmann VERSION 1.6 BU-945U-E 802.11 DSSS - Manual (Page 29)

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Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual
29 3A1582Rev1.6
Select the “Radio” Menu to change the following configuration parameters. If a change is made, you need to select “Save Changes” to retain the
changes. Changes will not take effect until the unit is reset.
Radio Mode BU-945U-E Only Supports the 802.11 Standard
Transmit Power This allows adjustment of the radio power. Do not set the radio Level power above the allowed setting
for your country You can reduce the power for short range applications, or to allow the use of high gain
transmitter antennas while still complying with the emission requirements of your country.
See Appendix C - for dBm to mW conversion
Channel (AP Only) Select available channel, frequency and bandwidth from drop down list. Different Regions will only
show the channels available for that region.
Channel Width Used when configuring Clients (STA). A Client will scans for available AP’s that it can then connect with.
Selecting a Channel Width will limit the number of channels the Client will scan, i.e., if 5MHz is selected
then the Client will only scan the MHz channels, If Auto is selected then it will scan all channels and all
bands (Default is Auto)
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.Note: Increasing the
Transmit Data rate will decrease the Transmit power level i.e., 36Mbps data rate will reduce the TX
power to 400mW, 48Mbps will reduce the power to 200mW, and 54 Mbps will reduce the power to
125mW.
Basic Rate This is the default data rate that the AP uses when sending beacons 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.
DTIM Period (AP only) DTIM sets which beacon frames incorporate extra information for low power sleeping client devices.
Normally set this to 1.
RTS Threshold “Ready to Send” RTS frames can be used to help avoid radio collisions between two stations that cannot directly hear
each other. Any frame larger than RTS Threshold bytes will be preceded by an RTS message. The
default value of RTS Threshold is 2346, which effectively disables RTS signalling, as this value is larger
than the maximum frame size (Fragmentation Threshold).
Fragmentation Threshold (Client Stations only). The maximum transmission unit (MTU) of data over the radio. If more than this
number of bytes is input into the module, it will be transmitted in more than one message
(or fragmented).
Enable Receive Enables Radio to receive on both antenna ports Diversity
Enable Transmit Diversity Enables Radio to transmit from both antenna ports. Module does not transmit from both ports at the
same time. If needed, i.e., broadcast messages the radio will toggle transmissions between the
antenna ports.
Interference Mitigation Interference Mitigation should only be turn on (Default is Off) if using Demo Omni antennas or if there
is a high level of background interference. By enabling this option the radio will dynamically adjust radio
parameters to help mitigate interference based on any background interference. It will reduce the
receiver sensitivity and so should only be enabled on paths with a high fade Margin and good
signal quality, etc.
Disable SSID broadcast. (AP only) This should be used to prevent unwanted eavesdroppers from detecting the radio network System
Address (SSID) by passively listening to beacon transmissions from the Access point. When disabled,
Access Points will not transmit the System Address openly in Beacon messages. This is particularly useful
in unencrypted radio networks.
Bursting Selecting this option can increase the data throughput by reducing the overheads associated with
wireless transmissions. If communicating with a device that does not support bursting the modem will
drop back to non-bursting mode.
Passive Scanning (STA only) Selecting this item stops a Client device from sending “probe request” messages when it is searching
for an access point to connect to. Instead, the client waits for a beacon transmission from the
access point.