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Cooper Bussmann BU-245U-E Wireless Ethernet & Device Server User Manual
TX Antenna Select which antenna port the module will transmit from. Selections are Main Port Only,Both (Diversity)
or Auxiliary Port Only.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.
RX Antenna Same as for TX antenna above but for the Receiver
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 signaling, 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).
Interference Mitigation (AP only) Interference Mitigation should only be turn ON (Default is OFF) if using Demo Whip 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.
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.
Background Scanning (STA only) Enabling this option will allow a modem to periodically rescan for Access Points so keep the connectivity
page up to date with current system information. Default is off.
Enable Iperf Server Enable Iperf Server function in the modem. Iperf is used for performing Radio surveys or radio path
testing. See section 3.24 “TCP Throughput Test”
Fixed Noise Floor Allows the Radio Receiver sensitivity Noise Floor to be moved above any interference. What this will
do is essentially stop the radio communicating with devices with lower signal strength. For use in
areas where there is a greater amount of interference
3.9 DHCP Client Configuration
DHCP (Dynamic Host Configuration Protocol) allows DHCP Clients to automatically obtain their IP Address at start-up.This simplifies network
administration, as there is no need to manually configure each device with a separate IP Address.The BU-245U-E is able to act as a DHCP client.
To set the BU-245U-E to acquire its IP address from a DHCP Server,check the box “Obtain IP Address Automatically” on the Network
Configuration page.
When configured as a DHCP Client the “Device Name”on the Module Information page will be the module identifier (as the IP address will be
unknown) and so should be given a unique name.
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