background image

 

12 

4  Troubleshooting 

 
This chapter provides solutions to problems usually encountered during the installation and 
operation of the  adapter.  

 

1.  What is the IEEE 802.11b standard

 

The IEEE 802.11b Wireless LAN standard subcommittee which formulat es the 

standard for the industry. The objective is to enable wireless LAN hardware from 

different manufactures to communicate.  
 

2.  What does  IEEE  802.11 feature  support

 

The product supports the following IEEE 802.11 functions: 

l

 

CSMA/CA plus Acknowledge  Protocol 

l

 

Multi-Channel Roaming  

l

 

Automatic Rate Selection 

l

 

RTS/CTS  Feature 

l

 

Fragmentation 

l

 

Power Management  

 

3.  What is Ad- hoc

 

An Ad-hoc integrated wireless LAN is a group of c omputers, each has a Wireless LAN 

adapter, Connected as an independent wireless LAN. Ad hoc wireless LAN is 
applicable at a departmental scale for a branch or SOHO operation.  
 

4.  What is Infrastructure

 

An integrated wireless and wireless and wired LAN is called an Infrastructure 

configuration. Infrastructure is applicable to enterprise scale for wireless access to 
central database, or wireless application for mobile workers. 
 

5.  What is BSS ID

 

A specific Ad hoc LAN is called a Basic Service Set (BSS). Computers in a BSS must 
be configured with the same BSS ID.  

 

6.  What is WEP

 

WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 40 bit shared 
key algorithm, as described in the IEEE 802 .11 standard.  
 

7.  Can Wireless products support printer sharing

  

Wireless products perform the same function as LAN products. Therefore, Wireless 
products can work with Netware, Windows 2000, or other LAN operating systems to 
support printer or file sharing.  

 

8.  Would the information be intercepted while transmitting on air

 

WLAN features two-fold protection in security. On the hardware side, as with Direct 

Sequence Spread Spectrum technology, it has the inherent security feature of 

scrambling. On the software side, WLAN series offer the encryption function (WEP) to 
enhance  security and Access Control. Users can set it up depending upon their needs. 
 

Summary of Contents for EW-7117U

Page 1: ...W Wi ir re el le es ss s L LA AN N M Mi in ni i U US SB B A Ad da ap pt te er r User Manual Version 1 0 Apr 2003...

Page 2: ...arranties merchantability or fitness for any particular purpose Any software described in this manual is sold or licensed as is Should the programs prove defective following their purchase the buyer a...

Page 3: ...an outlet on a circuit different from that to which the receiver is connected 4 Consult the dealer or an experienced radio technician for help FCC Caution This equipment must be installed and operated...

Page 4: ...of those who install and use it However special attention must be paid to the dangers of electric shock and static electricity when working with electrical equipment All guidelines of this and of the...

Page 5: ...S 2 2 INSTALLATION PROCEDURE 3 2 1 WINDOWS 98SE ME 2000 3 2 1 1 Install the Driver 3 2 1 2 Install the Utility 3 2 2 WINDOWS XP 4 3 CONFIGURATION UTILITY 6 3 1 WIRELESS CONNECTION 6 3 2 GENERAL CONNEC...

Page 6: ...eer communication among any wireless users no Access Point required Automatic fallback increases data security and reliability Supports the most popular operating system Windows 98SE Me 2000 XP Portab...

Page 7: ...please check the items of your package The package should include the following items One USB Adapter One USB Extension Cable 100Cm One Quick Guide One CD Driver Utility Manual If any of the above it...

Page 8: ...device and search for its driver 2 Please select the Driver Win2000 folder select the folder based on your computer s OS system and the system will complete the driver installation 2 1 2 Install the...

Page 9: ...you may decide to use the system s utility or the one provided by this USB adapter It is strongly recommended to using the utility of this adapter A Using the Windows XP s Utility Click the icon mark...

Page 10: ...te ZDConfig program click Start button and select ZyDAS Wireless LAN USB Note If you don t disable the XP s Utility you can only see the link status during communication process from the USB Adapter s...

Page 11: ...Network Adapter Display the product information of the USB Adapter Available Network Display all the SSID and Signal Strength of wireless devices nearby To re survey the available wireless devices ple...

Page 12: ...the proper position of the wireless device for quality network operation Link Quality This bar indicates the quality of the link The higher the percentage the better the quality TX Frame It shows the...

Page 13: ...ure This mode requires the presence of an AP or Router to create a wireless network All the communication is processed through the AP or Router Ad Hoc This mode enables wireless network adapters inter...

Page 14: ...ting please refer to Section 3 4 Information button To view the version of the driver firmware and the MAC Address of the adapter press the button 3 3 WEP Encryption WEP is an authentication algorithm...

Page 15: ...ing on the wireless stations which the adapter is connecting to Key Length You may select the 64 bit or 128 bit to encrypt transmitted data Larger key length will provide higher level of security but...

Page 16: ...he transmission rate of the adapter Fragementation Threshold The value defines the maximum size of packets any packet size larger than the value will be fragmented If you have decreased this value and...

Page 17: ...and wired LAN is called an Infrastructure configuration Infrastructure is applicable to enterprise scale for wireless access to central database or wireless application for mobile workers 5 What is BS...

Page 18: ...the original data without the need for retransmission To an unintended receiver DSSS appears as low power wideband noise and is rejected ignored by most narrowband receivers 10 What is Spread Spectru...

Reviews: