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Cooper Bussmann VERSION 1.6 BU-945U-E 802.11 DSSS User Manual

802.11 dsss wireless ethernet & device server
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  • Page 1 Cooper Bussmann Read and BU-945U-E 802.11 DSSS Retain Wireless Ethernet & Device Server for Future Reference User Manual Version 1.6 3A1582Rev1.6...

  • Page 2: Fcc Notice

    2) This device must accept any interference received, including interference that may cause undesired operation. This device must be operated as supplied by Cooper Bussmann. Any changes or modifications made to the device without the written consent of Cooper Bussmann may void the user’s authority to operate the device.

  • Page 3: Important Notice

    Like all industrial electronic products, Cooper Bussmann products can fail in a variety of modes due to misuse, age, or malfunction.

  • Page 4: Table Of Contents

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual CHAPTER 1 - INTRODUCTION ......5 1.1 NETWORK TOPOLOGY .

  • Page 5: Chapter 1 - Introduction

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 1 - INTRODUCTION HAPTER The BU-945U-E Industrial 802.11 Wireless Ethernet module provide wireless connections between Ethernet devices and/or Ethernet wired networks (LAN’s) and complies with relevant IEEE 802.11 standard.
  • Page 6 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual The second diagram shows an existing LAN being extended using BU-945U-Es. In this example, the Access Point is configured at the LAN end - although the wireless link will still work if the Client is at the LAN end.
  • Page 7 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Bridge vs. Router Each BU-945U-E is configured with an IP address for the Ethernet side, and another for the wireless side. A Bridge connects devices within the same Ethernet network - for example, extending an existing Ethernet LAN. For a Bridge, the IP address for the wireless side is the same as the Ethernet side.

  • Page 8: Getting Started Quickly

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 1.2 Getting Started Quickly Most applications for the BU-945U-E require little configuration. The BU-945U-E has many sophisticated features, however if you don’t require these features, this section will allow you to configure the units quickly.

  • Page 9: Chapter 2 - Installation

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 2.1 General The BU-945U-E modules are housed in a rugged aluminum case, suitable for DIN-rail mounting. Terminals will accept wires up to 2.5 mm (12 gauge) in size.

  • Page 10: Bench Test And Demo System Setup

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Bench test and Demo System Setup Care must be taken with placement of antenna in relation to the radios and the other antennas. Strong radio signals can saturate the receiver, hindering the overall radio communications.

  • Page 11: Installation Tips

    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).

  • Page 12: Yagi Directional Antennas

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Directional Antennas Directional antennas can be a: • Yagi antenna with a main beam and orthogonal elements • Directional radome, which is cylindrical in shape • Parabolic antenna A directional antenna provides high gain in the forward direction, but lower gain in other directions.

  • Page 13: Db9 Connector Pinouts

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual DB9 Connector Pinouts Name Direction RS485 Serial Port The RS485 port provides for communication between the BU-945U-E unit and its host device using a multi-drop cable. Up to 32 devices may be connected in each multi-drop network.
  • Page 14 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Shorter runs of 485 cables may not require the termination resistors to be enabled. www.cooperbussmann.com/BussmannWirelessResources 3A1582Rev1.6...

  • Page 15: Discrete (Digital) Input/Output

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 2.5 Discrete (Digital) Input/Output The BU-945U-E has one on-board discrete/digital I/O channel. This channel can act as either a discrete input or discrete output. It can be monitored, or set remotely, or alternatively used to output a communications alarm status.

  • Page 16: Chapter 3 - Operation

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 3.1 Start-up “Access Point” Start-up When an Access Point (AP) unit starts up it will immediately begin transmitting periodic messages, called beacons on the configured channel. Beacons include information that a Client may examine in order to identify if the Access Point is suitable for link establishment. Clients will only attempt to establish a link with an Access Point whose beacon indicates a matching SSID.

  • Page 17: Led Indication

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual LED Indication The following table details the status of the indicating LEDs on the front panel under normal operating conditions. LED Indicator Condition GREEN Flashing RED/GREEN Radio RX...
  • Page 18 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual If operating in New Zealand the frequency range is 921-928MHz and the available channels are: • 2 x non overlapping 1.25MHz channels • 1 x 2.5MHz channel • 1 x 5MHz channel If operating in Hong Kong the frequency range is 922-925MHz and the available channels are: •...

  • Page 19: Radio Throughput

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Radio Throughput Below is a table showing the maximum TCP/IP throughput based on channel selection and receiver signal level. There are five channel bandwidths (20, 10, 5, 2.5, & 1.25MHz). These throughput estimations are based on perfect radio conditions, i.e., little to...

  • Page 20: Configuring The Unit For The First Time

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 3.3 Configuring the Unit for the First Time The BU-945U-E has a built-in web server, containing web pages for analyzing and modifying the module’s configuration. The configuration can be accessed using Microsoft®...

  • Page 21: Method 1 - Set Pc To Same Network As Bu-945U-E

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Method 1 - Set PC to same network as BU-945U-E Connect the Ethernet cable between unit and the PC configuring the module. • Set the Factory Default Switch to the SETUP position. This will always start the BU-945U-E with Ethernet IP address 192.168.0.1XX, subnet mask 255.255.255.0, gateway IP 192.168.0.1 and the radio disabled.

  • Page 22: Method 2 - Set Bu-945U-E Network Address To Match The Local Network

    Cooper Bussmann and matches the IP address 192.168.0.100. When you first connect to the BU-945U-E, your web browser will issue a warning that Cooper Bussmann is not a trusted authority. Ignore this warning and proceed to the configuration web page.

  • Page 23: Quick Start

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual • Enter the IP address for the BU-945U-E into the Internet Explorer Address bar e.g. http://10.10.0.6 which is the IP address you temporarily configured with the ifconfig command.

  • Page 24: Network Configuration

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 3.5 Network Configuration You can view or modify Ethernet network parameters by selecting the “Network” menu. When prompted for username and password, enter “user” as the username, and “user” as the password in the password field (This is the factory default – See section 3.17 “Module Information Configuration”...

  • Page 25: Network Settings Webpage Fields

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Network Settings Webpage Fields Operating Mode Used to select Access Point (Infrastructure), Client (Infrastructure). By default this is set to Client. Device Mode Used to select Bridge or Router mode. By default this is set to Bridge.

  • Page 26: Security Menu

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Security Menu Select the Radio Encryption level from the drop down menu on the Main index page and then press the “Save Changes” button. The default setting is “None.”...
  • Page 27 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual For optimal security a passphrase consisting of a combination of letters and numbers (i.e., not just a simple word or phrase) as well as upper and lower case. E.g., “WiReLeSs TeChNoLoGy 2010”...

  • Page 28: Normal Operation

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 3.6 Normal Operation After addresses are configured, the units are ready for operation. Refer to section 1 for an explanation on the operation of a Bridge and Router.
  • Page 29 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.

  • Page 30: Channel Selection

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Radio Mode BU-945U-E Only Supports the 802.11 Standard Background Scanning (STA only) Enabling this option will allow a modem to periodically rescan for Access Points keeping the connectivity page up to date with current system information.

  • Page 31: Dhcp Server Configuration

    (See section 3.8 “DHCP Server Configuration”). DNS is the system which translates internet names (such as www.cooperbussmann.com) to IP Addresses. The Cooper Bussmann BU-945U-E can act as a DNS Server for a local network. Name to IP address mapping are automatically updated by the built in DHCP server when it issues an IP address to a client unit.

  • Page 32: Multiple Ap Repeater Mesh Network

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual The Spanning Tree Protocol implemented is IEEE 802.1d compatible. The algorithm forms a loop-free network by blocking traffic between redundant links in the network. These blocked links are placed in a standby condition, and may be automatically enabled to repair the network if another link is lost.
  • Page 33 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual A WDS bridge interface allows traffic to be bridged to another Access Point on the same IP network. WDS bridge interfaces do not require additional IP Address configuration, as they are bridged with the standard wireless interface that is used for connections to associated clients.

  • Page 34: Example - Extending Range Using Wds

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Example – Extending range using WDS One of the most common uses for WDS is to extend the range of the wireless network using repeaters. The diagram above illustrates a simple example where the four Access Points are all at fixed locations (each of the Access Points could, of course, have one or more client/stations connected).

  • Page 35: Example - Roaming With Wds Access Points

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Example - Roaming with WDS Access Points Another common use for WDS is extending the range across a large wireless network but allowing roaming connections between access points or being able to switch to the next Access Point when out of range of the previous Access Point.
  • Page 36 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual The configuration for Site A and B are shown below. In this example, Site B uses its primary access point to act as an access point for Virtual Stations on Site A and D, and uses a Virtual Station to act as a client to Site C.

  • Page 37: Example - Wds Routed Network

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Example – WDS Routed Network An example of using WDS router interfaces to achieve a similar physical topology to the WDS bridge example discussed earlier is illustrated below.
  • Page 38 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual • The second WDS entry above specifies a WDS link from Site B as a virtual Access Point interface and like the WDS link to Site A, we use a different Router IP address (169.254.5.X) than the default interface.

  • Page 39: Wds Connections

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual WDS Connections: Connection Mode Specify the connection mode for this link. AP (Downlink) configures the connection as a virtual access point. Sta (Uplink) configures the connection as a virtual client. Point-to-point configures the connection as a fixed link.

  • Page 40: Wireless Message Filtering

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual An alternative to adding routing rules to the BU-945U-E in this example would be for each device on LAN A that needs to communicate with LANs B and C to have independent routing rules specifying the BU-945U-E clients at B and C as gateways to those networks.
  • Page 41 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual The BU-945U-E may be configured to reject or accept messages to and from certain Addresses. To accept wireless messages from particular devices a “Whitelist” of Addresses must be made. Alternatively to reject messages from particular devices, a “Blacklist” of Addresses must be made.

  • Page 42: Mac Address Filter Configuration

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual MAC Address Filter Configuration: MAC addresses are uniquely assigned to each device and so can be used to permit or deny network access to specific devices through the use of Blacklists and Whitelists.

  • Page 43: Arp Filter Configuration

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Select “Blacklist” or “Whitelist” Blacklist will prevent all listed devices from accessing the module and using the radio link. Whitelist will allow devices with the IP addresses listed to communicate with the module and utilize the radio link.

  • Page 44: Serial Port Configuration

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 3.15 Serial Port Configuration The BU-945U-E has an RS-232, and an RS-485 port for serial communications. These ports may be used for different purposes. The BU-945U-E offers three different serial functions, which are PPP server; Serial Gateway; and Modbus TCP to RTU Gateway.

  • Page 45: Serial Gateway (Server/Client/Multicast)

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Serial Gateway (Server/Client/Multicast) Serial Gateway functionality is available for both RS-232 and RS-485 ports independently, and enables serial data to be routed via the wired or wireless network connection. Serial Gateway functionality is similar to radio modem functionality, allowing point-to-point and multipoint serial data transfer.

  • Page 46: Modbus Tcp To Rtu Gateway

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Modbus TCP to RTU Gateway The Modbus TCP to RTU Gateway allows an Ethernet Modbus/TCP Client (Master) to communicate with a serial Modbus RTU Slave. The BU-945U-E makes this possible by internally performing the necessary protocol conversion. The conversion is always performed by the BU-945U-E which is directly connected to the Modbus serial device (i.e., only this module needs to have Modbus TCP to RTU Gateway enabled).

  • Page 47: Multicast Pipe Manager

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual RS232 / RS485 Serial Gateway Serial Gateway Mode Server Client Multicast Modbus Allows a serial Modbus RTU Client (Master) to connect with a single Ethernet Modbus TCP Server (Slave) Character Timeout Enter the maximum delay (in msec) between received serial characters before packet is sent via network.

  • Page 48: Digital Input/Output

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Multicast Pipe Manager Enabled Enables or disables the Multicast Pipe manager. Server Port Server port used by the Multicast Pipe Manager. Will need to be configured the same as the Port on the Client, i.e., Scada, DCS, etc..

  • Page 49: Modbus I/O Transfer

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 3.17 Modbus I/O Transfer The BU-945U-E provides Modbus TCP Client and Modbus TCP Server functionality for I/O transfer. 5000 x 16bit general purpose registers are provided for Modbus (including the onboard Digital Input/Output) and are shared for both Client and Server. Modbus TCP Client (Master) and Modbus TCP Server (Slave) are both supported simultaneously, and when combined with the built in Modbus TCP to RTU Gateway the BU-945U-E can transfer I/O to/from almost any combination of Modbus TCP or RTU devices.
  • Page 50 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Modbus RTU (serial) Master functionality is achieved by combining the Modbus TCP Client (Master) and Modbus TCP to RTU Gateway. Simply specify a Modbus TCP Client (Master) connection to a Modbus TCP Server where the server is the address of any BU-945U-E with Modbus TCP to RTU Gateway enabled.
  • Page 51 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Three “Modbus TCP Client Mappings” are also configured at B in order to perform the required I/O transfer. The first mapping transfers the status of the onboard digital input at C to the onboard digital output at B. Local Register 4320 specifies the register for the onboard digital output at B (since B is the local unit at which the mapping is configured).

  • Page 52: Module Information Configuration

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Modbus TCP Client Mappings on I/O Transfer Menu: Local Register I/O Count Function Code Destination Register Device ID Server IP Address Response Timeout Comm Fail Register 3.18 Module Information Configuration Module Information Webpage Fields This configuration page is primarily for information purposes.

  • Page 53: System Tools

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 3.19 System Tools The System Tools Page has a number of tools that help maintain the module firmware and configuration. Configuration Summary This option is used to save all the different configuration pages onto one page, for easy viewing.

  • Page 54: Configuration Examples

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 3.21 Configuration Examples Setting a BU-945U-E to Factory Default Settings Access configuration webpage on the BU-945U-E. Refer section”3.3.” • Click on “System Tools” Menu Item • Click on Factory Default Configuration Reset, and wait for unit to reset. While the module executes the reset sequence the OK LED will flash.

  • Page 55: Connecting Two Separate Networks Together

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Client 1 Configuration • Perform the same configuration steps as the Access Point configuration with the following differences: • Set the Ethernet and Wireless IP addresses of BU-945U-E to 192.168.0.201 •...

  • Page 56: Access Point Configuration

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Access Point Configuration • Connect straight through Ethernet cable between PC and BU-945U-E • Ensure configuration PC and BU-945U-E are setup to communicate on the same network • Set DIP switch to SETUP •...

  • Page 57: Chapter 4 - Diagnostics

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 4.1 Diagnostics Chart LED Indicator Condition GREEN RED Continuously RED At Power On Fast Flash RED / GREEN Slow Flash RED / GREEN Radio RX GREEN flash Radio RX...

  • Page 58: Diagnostic Information Available

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 4.2 Diagnostic Information Available Connectivity The Connectivity webpage displays connections and available networks. The “Connected Devices” section displays the radio channel, received signal strength, and radio data rate for each Client or Access Point by their MAC Address. The readings shown are based upon the last received data message from the Access Point or Client.

  • Page 59: Statistics

    The Statistics webpage is used for advanced debugging of BU-945U-E. This webpage details the state of the BU-945U-E and performance information. This page is typically useful to Cooper Bussmann technical support personnel in diagnosing problems with the module. Note that when updating the Statistics webpage, it is necessary to hold down the <ctrl> key while pressing the refresh button. Otherwise, the information will not be updated.

  • Page 60: Internal Diagnostic Modbus Registers

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 4.4 Internal Diagnostic Modbus Registers There are a number of internal diagnostic registers that can be accessed via Modbus TCP/RTU that will help with analyzing and diagnosing the radio network.

  • Page 61: Statistic Registers

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Statistic Registers Register Module Description 4500 Both Total data packets received on the interface 4502 Both Received frames with antenna 1 (TX/RX) 4504 Both Received frames with antenna 2 (RX)

  • Page 62: Testing Radio Paths

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 4.5 Testing Radio Paths The general procedure for radio range testing a link is fairly simple. Configure two units to form a link using automatic radio rates. Install the Access Point at a fixed location.
  • Page 63 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual This – t command is used to repeatedly ping the specified node in the network, to cancel use “Ctrl – C” A good test for the network once it is first set up is to use “ping” repeatedly from one PC’s IP address to the other PC’s IP address. This gives a good indication of the network’s reliability and how responsive it is from point to point.

  • Page 64: Ipconfig

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual ”Ipconfig” “ipconfig” can be used to show your current TCP/IP information, including your address, DNS server addresses, adapter type and so on. In the above example ipconfig was entered in the command prompt. The reply back shows the PC’s IP address, Subnet mask and the gateway it is connected to.

  • Page 65: Route

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual ”Route” Route is used where you are joining two or more different networks together via the BU-945U-E. Refer to Section 1.1 for more details. If more than one routing rule is needed then a Routing Table is required, e.g. Multiple networks each with a different IP range.

  • Page 66: Chapter 5 - Specifications

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual General EMC Specification EN 300 683, FCC Part 90 Radio Specification EN 300 328, FCC Part 15.247, RSS 210 Housing BU-945U-E-A&G: 114 x 185 x 30mm, 4.5 x 7.2 x 1.2 inch Powder-coated, extruded aluminum...

  • Page 67: System Parameters

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual System Parameters System Address (ESSID) 1 to 31 Character text string Wireless Data Encryption WEP (64bit and 128bit), WPA PSK (TKIP), WPA PSK (AES), WPA2-PSK(AES), WPA PSK/WPA2-PSK, WPA Enterprise User Configuration •...

  • Page 68: Appendixa - Firmware Upgrades

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual A - F PPENDIX IRMWARE PGRADES Determine which firmware version is present in the module to be upgraded by viewing the index webpage of the module. Firmware versions 1.0.3 and later may be upgraded via the configuration web pages. This upgrade can be done locally with a PC connected directly to the module, or remotely over a working radio link.

  • Page 69: Appendixb - Glossary

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Acknowledgment. Access Point An access point connects wireless network Stations (or Clients) to other Stations within the wireless network and also can serve as the point of interconnection between the wireless network and a wired network.
  • Page 70 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Encryption Key An alphanumeric (letters and/or numbers) series that enables data to be encrypted and then decrypted so it can be safely shared among members of a network. WEP uses an encryption key that automatically encrypts outgoing wireless data.
  • Page 71 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Signal to Noise Ratio. The number of decibels difference between the signal strength and background noise. Transmit Power The power usually expressed in mW or dBm that the wireless device transmits at.
  • Page 72 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual VoIP Voice Over Internet Protocol. Voice transmission using Internet Protocol to create digital packets distributed over the Internet. VoIP can be less expensive than voice transmission using standard analog packets over POTS (Plain Old Telephone Service).

  • Page 73: Appendix C - Power Conversion

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual dBm to mW Conversion Watts 10 mW 10 dB 13 mW 11 dB 16 mW 12 dB 20 mW 13 dB 25 mW 14 dB 32 mW 15 dB...

  • Page 74: Appendixd - Iperf Throughput Test - Ext

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual D - I PPENDIX PERF HROUGHPUT This Appendix shows how to set up and use the Iperf application to test the throughput of Ethernet Modems. Iperf is a tool used to measure the throughput and quality of a network link. Another Application called Jperf can also be used which gives a graphical interface for all results.
  • Page 75 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Figure 2 Note: If you get a security pop up on PC select Unblock for the application to run. Iperf server application is now running and waiting for a Client connection.

  • Page 76: Jperf Application

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Figure 4 Using the Theoretical throughput calculations in Table 1 you can compare the results with the measured to give an indication of the difference between expected and measured. Remembering that the theoretical calculations are best case possible results...
  • Page 77 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Figure 7 When Jperf screen appears select Client Mode, enter in IP address of the Server PC; leave Port as default and press Run Iperf button. The test will run again and the Bandwidth (Throughput) display will show results of the test.

  • Page 78: Appendixe - Gnu Free Doc License

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual E - GNU F PPENDIX ICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
  • Page 79 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions: a) You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change.

  • Page 80: No Warranty

    Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual 6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein.
  • Page 81 Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual Notes: www.cooperbussmann.com/BussmannWirelessResources 3A1582Rev1.6...

  • Page 82: Customer Assistance

    8 5 5 . 2 8 7 . 7 6 2 6 ( 8 5 5 - B U S S M A N N w w w. c o o p e r b u s s m a n n . c o m Your Authorized Cooper Bussmann Distributor is: ©2011 Cooper Bussmann www.cooperbussmann.com www.cooperbussmann.com/BussmannWirelessResources...

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