Cooper Bussmann BU-945U-E 802.11 DSSS user manual Installation tips, Omni-directional Antennas

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

The net gain of the antenna/cable configuration is determined by adding the antenna gain and the cable loss.

For example, an 8dBi antenna (5.8dBd) with 10 meters of Cellfoil (3dBd) has a net gain of 2.8dB (5.8dB – 3dB).

Installation tips

Connections between the antenna and coaxial cable should be carefully taped to prevent ingress of moisture. Moisture ingress in the coaxial cable is a common cause for problems with radio systems, as it greatly increases the radio losses. We recommend that the connection be taped, firstly with a layer of PVC Tape, then with a vulcanizing tape such as “3M 23 tape”, and finally with another layer of PVC UV Stabilized insulating tape. The first layer of tape allows the joint to be easily inspected when trouble shooting as the vulcanizing seal can be easily removed.

Where antennas are mounted on elevated masts, the masts should be effectively earthed to avoid lightning surges. For high lightning risk areas, approved Cooper Bussmann surge suppression devices such as the “BU-CSD-SMA-2500” or “BU-CSD-N-6000” should be fitted between the module and the antenna. If using non Cooper Bussmann surge suppression devices then the devices must have a 'TURN ON' voltage of less than 90V If the antenna is not already shielded from lightning strike by an adjacent earthed structure, a lightning rod may be installed above the antenna to provide shielding.

Omni-directional Antennas

An omni-directional antenna transmits radio power in all directions and is easy to install and use. The Dipole antenna with its integral 15ft (5m) of coax cable and does not require any additional hardware, however a coax cable and mounting kit is required with the Collinear antenna.

All omni-directional antennas should be mounted vertically, preferably 1 wavelength away (see drawing below for distances) from a wall or mast and at least 3ft (1m) from the radio module to obtain maximum range.

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 InstallationAntennas Bench test and Demo System SetupPlant and Factory Installations Line-of-sight installationsOmni-directional Antennas Installation tipsRS232 Serial Port Power SupplySerial Connections Directional AntennasRS485 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 For local addresses Power up the BU-945U-E moduleEnter the username user and default password user Method 1 Set PC to same network as BU-945U-E3A1582Rev1.6 Quick Start Quick Start ConfigurationNetwork Configuration Save Changes and Reset Dhcp Server Configuration, Default is uncheckedWireless ports will have the same IP address Configured Essid of the clientEncryption keys must not be all zeros, i.e Security Menu3A1582Rev1.6 Router Operation Radio ConfigurationNormal Operation Transparent Bridge OperationAccess point Bands Default is AutoSignal quality, etc Drop back to non-bursting modeChannel Selection Dhcp Client ConfigurationRadio Mode BU-945U-E Only Supports the 802.11 Standard Default distance is 20kmSpanning 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 To be the same on all communicating Multicast devices Digital Input/OutputPort on the Client, i.e., Scada, DCS, etc Multicast Group IP AddressModbus 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 RED Continuously Diagnostics ChartBoot Status LED Indication during Start-up LED Indicator Condition MeaningSite Survey Diagnostic Information AvailableConnectivity Connectivity ParametersNetwork Traffic Analysis Statistics5014 STA Only Internal Diagnostic Modbus Registers9999 Both Reset module enter Ffff to reset module Connection InformationStatistic Registers Ping Testing Radio PathsUtilities 3A1582Rev1.6 Arp IpconfigRoute Serial Ports Power SupplyGeneral Radio TransceiverInput / Output status System ParametersAppendix a Firmware Upgrades Web-Based UpgradeDhcp ACKCSMA/CA CSMA/CDISN IeeeIPX-SPX SSL SNRNAT NICWEP VoIPVPN WANDBm to mW Conversion Iperf Applications InstallationMaterials 3A1582Rev1.6 JPerf Application 3A1582Rev1.6 Terms and Conditions Preamble3A1582Rev1.6 No Warranty 3A1582Rev1.6 Customer Assistance