Manuel d'utilisation / d'entretien du produit BU-945U-E 802.11 DSSS du fabricant Cooper Bussmann
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Cooper Bussmann BU-945U-E 802.11 DSSS Wireless Ethernet & Device Ser ver User Manual Version 1.6 3A1582Rev1.6 Read and Retain for Future Reference.
2 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual Cooper Bussmann Application Engineering • Phone 8:00 a.m - 5:00 p.m. Central, M-F (636) 527-1270 • Fax: (636) 527-1607 • E-mail: FuseT ech@cooperindustries.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual Important Notice Cooper Bussmann products are designed to be used in industrial environments, by experienced industrial engineering personnel wit h adequate knowledge of safety design considerations.
4 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 CONTENTS CHAPTER 1 - INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . .5 1.1 NETWORK TOPOLOGY .
C HAPTER 1 - INTRODUCTION 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.
6 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 7 3A1582Rev1.6 Bridge vs. Router Each BU-945U-E is configured with an IP address for the Ethernet side, and another for the wireless side.
8 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 9 3A1582Rev1.6 C HAPTER 2 - INST ALLA TION 2.1 General The BU-945U-E modules are housed in a rugged aluminum case, suitable for DIN-rail mounting.
10 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 Bench test and Demo System Setup Care must be taken with placement of antenna in relation to the radios and the other antennas.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 11 3A1582Rev1.6 The net gain of the antenna/cable configuration is determined by adding the antenna gain and the cable loss.
12 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 13 3A1582Rev1.
14 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 15 3A1582Rev1.6 2.5 Discrete (Digital) Input/Output The BU-945U-E has one on-board discrete/digital I/O channel.
16 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 17 3A1582Rev1.6 LED Indication The following table details the status of the indica ting LEDs on the front panel under normal operating conditions.
18 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 If operating in New Zealand the frequency range is 921-928MHz and the available channels are: • 2 x non overlapping 1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 19 3A1582Rev1.6 Radio Throughput Below is a table showing the maximum TCP/IP throughput based on channel selection and receiver signal level.
20 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 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.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 21 3A1582Rev1.6 Method 1 - Set PC to same network as BU-945U-E Connect the Ethernet cable between unit and the PC configuring the module.
22 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 T o resume normal configured operation when Configuration is complete, switch Factor y Default dip-switch on the BU-945U-E to RUN and cycle power .
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 23 3A1582Rev1.6 • Enter the IP address for the BU-945U-E into the Internet Explorer Address bar e.g. http://10.
24 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 3.5 Network Configuration Y ou can view or modify Ethernet network parameters by selecting the “Network” menu.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 25 3A1582Rev1.6 Network Settings Webpage Fields Operating Mode Used to select Access Point (Infrastructure), Client (Infrastructure).
26 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 Security Menu Select the Radio Encryption level from the drop down menu on the Main index page and then press the “Save Changes” button.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 27 3A1582Rev1.6 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.
28 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 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 .
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver 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.
30 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 31 3A1582Rev1.6 3.9 DHCP Server Configuration The BU-945U-E is able to act as a DHCP server , supplying IP addresses automatically to other DHCP Client devices.
32 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 The Spanning T ree Protocol implemented is IEEE 802.1d compatible. The algorithm forms a loop-free network by blocking traffic be tween redundant links in the network.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 33 3A1582Rev1.6 A WDS bridge interface allows traffic to be bridged to another Access Point on the same IP network.
34 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 Example – Extending range using WDS One of the most common uses for WDS is to extend the range of the wireless network using repeaters.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 35 3A1582Rev1.
36 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 37 3A1582Rev1.6 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 .
38 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 • The second WDS entr y 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.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 39 3A1582Rev1.6 WDS Connections: Connection Mode Specify the connection mode for this link. AP (Downlink) configures the connection as a virtual access point.
40 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 41 3A1582Rev1.6 The BU-945U-E may be configured to reject or accept messages to and from certain Addresses. T o accept wireless messages from par ticular devices a “Whitelist” of Addresses must be made.
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 thro ugh the use of Blacklists and Whitelists.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 43 3A1582Rev1.6 Select “Blacklist” or “Whitelist” Blacklist will prevent all listed devices from accessing the module and using the radio link.
44 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 3.15 Serial Port Configuration The BU-945U-E has an RS-232, and an RS-485 port for serial communications.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 45 3A1582Rev1.
46 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 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.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 47 3A1582Rev1.6 RS232 / RS485 Serial Gatew ay Serial Gateway Mode Ser ver Module will wait for a connection to be initiated by a remote Client.
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.. Multicast Group IP Address Broadcast Address used when communicating to all other Multicast devices.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 49 3A1582Rev1.6 3.17 Modbus I/O T ransfer The BU-945U-E provides Modbus TCP Client and Modbus TCP Server functionality for I/O transfer .
50 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 Modbus RTU (serial) Master functionality is achieved by combining the Modbus TCP Client (Master) and Modbus TCP to RTU Gateway .
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 51 3A1582Rev1.6 Three “Modbus TCP Client Mappings” are also configured at B in order to perform the required I/O transfer .
52 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 Modbus TCP Client Mappings on I/O T ransfer Menu: Local Register Enter the starting onboard I/O register number that the specified Modbus Master transaction will transfer I/O to/from.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 53 3A1582Rev1.6 3.19 System T ools The System T ools Page has a number of tools that help maintain the module firmware and configuration.
54 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 3.21 Configuration Examples Setting a BU-945U-E to Factory Default Settings Access configuration webpage on the BU-945U-E.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 55 3A1582Rev1.
56 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 57 3A1582Rev1.6 C HAPTER 4 - DIAGNOSTICS 4.1 Diagnostics Chart LED Indicator Condition Meaning OK GREEN Normal Operation OK RED Continuously Supply voltage too low .
58 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 4.2 Diagnostic Information Available Connectivity The Connectivity webpage displays connections and available networks.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 59 3A1582Rev1.6 4.3 Statistics The Statistics webpage is used for advanced debugging of BU-945U-E. This webpage details the state of the BU-945U-E and performa nce information.
60 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 61 3A1582Rev1.
62 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 4.5 T esting 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.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 63 3A1582Rev1.
64 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 ”Ipconfig” “ipconfig” can be used to show your current TCP/IP information, including your address, DNS server addresses, adapter type and so on.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 65 3A1582Rev1.6 ”Route” Route is used where you are joining two or more different networks together via the BU-945U-E.
66 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 C HAPTER 5 - SPECIFICA TIONS General EMC Specification EN 300 683, FCC Part 90 Radio Specification EN 300 328, FCC Part 15.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 67 3A1582Rev1.
68 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 A PPENDIX A - F IRMW ARE U PGRADES Determine which firmware version is present in the module to be upgraded by viewing the index webpage of the module.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 69 3A1582Rev1.
70 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 Encryption Key An alphanumeric (letters and/or numbers) series that enables data to be encrypted and then decr ypted so it can be safely shared among members of a network.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 71 3A1582Rev1.6 SNR Signal to Noise Ratio. The number of decibels difference between the signal strength and background noise.
72 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 VoIP Voice Over Internet Protocol. Voice transmission using Internet Protocol to create digital packets distributed over the Internet.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 73 3A1582Rev1.
74 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 A PPENDIX D - I PERF T HROUGHPUT T EST - E XT This Appendix shows how to set up and use the Iperf application to test the throughput of Ethernet Modems.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 75 3A1582Rev1.6 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.
76 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 Figure 4 Using the Theoretical throughput calculations in T able 1 you can compare the results with the measured to give an indication of the difference between expected and measured.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 77 3A1582Rev1.6 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 bu tton.
78 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.6 A PPENDIX E - GNU F REE D OC L ICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 79 3A1582Rev1.
80 www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 3A1582Rev1.
www .cooperbussmann.com/BussmannWirelessResources Cooper Bussmann Wireless Ethernet & Device Ser ver BU-945U-E 802.11 DSSS User Manual 81 3A1582Rev1.
PDF Only Customer Satisfaction T eam Available to answer questions r egarding Cooper Bussmann products & services Monday-Friday , 8:00 a.m. – 4:30 p.m. for all US time zones. s Toll-free phone: 855-287-7626 (855-BUSSMANN) s T oll-free fax: 800-544-2570 s E-mail: busscustsat@cooperindustries.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Cooper Bussmann BU-945U-E 802.11 DSSS c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Cooper Bussmann BU-945U-E 802.11 DSSS - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Cooper Bussmann BU-945U-E 802.11 DSSS, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Cooper Bussmann BU-945U-E 802.11 DSSS va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Cooper Bussmann BU-945U-E 802.11 DSSS, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Cooper Bussmann BU-945U-E 802.11 DSSS.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Cooper Bussmann BU-945U-E 802.11 DSSS. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Cooper Bussmann BU-945U-E 802.11 DSSS ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
