Cooper Bussmann BU-945U-E 802.11 DSSS See Appendix C for dBm to mW conversion, Channel AP Only

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Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual

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.

3A1582Rev1.6

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Contents Read Retain Phone 800 a.m 500 p.m. Central, M-F 636 Fax 636 Cooper Bussmann Application EngineeringFCC Notice Cooper Bussmann Important NoticeGNU Free Documentation License Contents Network Topology BU-945U-E 802.11 630mW max powerAccess Point vs Client 3A1582Rev1.6 Bridge vs. Router Getting Started Quickly General Antenna InstallationPlant and Factory Installations Bench test and Demo System SetupLine-of-sight installations AntennasOmni-directional Antennas Installation tipsSerial Connections Power SupplyDirectional Antennas RS232 Serial PortRS485 Serial Port DB9 Connector Pinouts3A1582Rev1.6 Discrete Digital Input/Output Start-up 802.11 900 MHz Channels Selecting a ChannelLED Indication 3A1582Rev1.6 Data Throughput Based on Repeater Hops Radio ThroughputAccessing Configuration for the First Time Configuring the Unit for the First TimeDefault Configuration Enter the username user and default password user Power up the BU-945U-E moduleMethod 1 Set PC to same network as BU-945U-E For local addresses3A1582Rev1.6 Quick Start Quick Start ConfigurationNetwork Configuration Wireless ports will have the same IP address Dhcp Server Configuration, Default is uncheckedConfigured Essid of the client Save Changes and Reset Encryption keys must not be all zeros, i.e Security Menu3A1582Rev1.6 Normal Operation Radio ConfigurationTransparent Bridge Operation Router OperationSignal quality, etc Bands Default is AutoDrop back to non-bursting mode Access pointRadio Mode BU-945U-E Only Supports the 802.11 Standard Dhcp Client ConfigurationDefault distance is 20km Channel SelectionSpanning Tree Algorithm / Redundancy Dhcp Server ConfigurationDNS Server Configuration Multiple AP Repeater Mesh Network 3A1582Rev1.6 Site B WDS Configuration Example Extending range using WDSExample Adding Redundancy Example Roaming with WDS Access Points3A1582Rev1.6 Example WDS Routed Network Mouse, to highlight the entire row STP Routing RulesWDS Connections Information at a later time Wireless Message FilteringSpecifies a destination host 3A1582Rev1.6 Utilize the radio link. All other devices are blocked MAC Address Filter ConfigurationIP Address Filter Configuration ARP Filter Configuration RS-232 PPP Server Serial Port ConfigurationSerial Gateway Modbus Modbus RTU to TCP Serial Gateway Server/Client/MulticastSerial Menu Modbus TCP to RTU GatewayMulticast Pipe Manager Port on the Client, i.e., Scada, DCS, etc Digital Input/OutputMulticast Group IP Address To be the same on all communicating Multicast devicesModbus I/O Transfer 3A1582Rev1.6 Modbus TCP Configuration on I/O Transfer Menu Module Information Webpage Fields Module Information ConfigurationModbus TCP Client Mappings on I/O Transfer Menu System Tools Remote ConfigurationExtending a Wired Network Configuration ExamplesSetting a BU-945U-E to Factory Default Settings LAN B Configuration Client 1 ConfigurationClient 2 Configuration Extending Range of a Network with a Repeater Hop Access Point ConfigurationClient Configuration Boot Status LED Indication during Start-up Diagnostics ChartLED Indicator Condition Meaning RED ContinuouslyConnectivity Diagnostic Information AvailableConnectivity Parameters Site SurveyNetwork Traffic Analysis Statistics9999 Both Reset module enter Ffff to reset module Internal Diagnostic Modbus RegistersConnection Information 5014 STA OnlyStatistic Registers Ping Testing Radio PathsUtilities 3A1582Rev1.6 Arp IpconfigRoute General Power SupplyRadio Transceiver Serial PortsInput / Output status System ParametersAppendix a Firmware Upgrades Web-Based UpgradeCSMA/CA ACKCSMA/CD DhcpISN IeeeIPX-SPX NAT SNRNIC SSLVPN VoIPWAN WEPDBm to mW Conversion Iperf Applications InstallationMaterials 3A1582Rev1.6 JPerf Application 3A1582Rev1.6 Terms and Conditions Preamble3A1582Rev1.6 No Warranty 3A1582Rev1.6 Customer Assistance