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Genotech GWL-2400P User Manual

Made by: Genotech
Type: User Manual
Category: Network Card
Pages: 15
Size: 0.32 MB

 

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GWL-2400P 

( WIRELESS LANCARD ) 
 

 
 

 

 
 
 
 
 
         GENOTECH CO . LTD 

 


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NOTICES 

 

This device complies with Part 15 of the FCC rules.  Operation is subject to the 

following two conditions . 

1. This device may not cause harmful interference. 

2. This device mus t accept any interference received,  including interference that 

may cause undesired operation. 

 

NOTE: This equipment has been tested and found to comply with the limits for a 

Class B digital device, pursuant to Part 15 of the FCC  rules. These limits are 

designed to provide reasonable protection  against harmful interference in a 

residential installation. This  equipment generates, uses and can radiate radio 

frequency energy and, if not installed and used in accordance with the instruction 

manual, may cause ha rmful interference to radio communications.   

However, there is no guarantee that interference will not occur in a  particular 

installation. If this equipment does cause harmful  interference to radio or 

television reception, which can be determined by turning the equipment off and on, 

the user is encouraged to try to  correct the interference by one or more of the 

following measures: 

• Reorient or relocate the receiving antenna 

• Increase the separation between the equipment and the receiver 

• Connect the equipment into an outlet on a circuit different from 

that to which the receiver is connected 

• Consult the dealer or an experienced ratio/TV technician for help 

 

WARNING!  

Any changes or modifications of equipment not expressly approved by Intersil   

could void the user’s authority to operate the equipment.  

 

 

 

 

 

 

 

 


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GWL-2400P Technical Support 

 

Your comments and suggestion help us to improve the quality and usefulness of   

our documentation, you may response to the following contact e-mail.   

If you encounter problems when installing or using this product, or would like 

more information about our other products, you can contact us with the  telephone  

numbers listed below. 

 

 

Useful information 

 

TEL:82-2-3281-2490 

FAX:82-2-3281-2491 

E-Mail: sale @genoi.com 

World Wide Web: http://www.genoi.com 

#308 GUNKOOK BLG, 288-1, DOKSAN-DONG 

GUMCHON-GU, SEOUL, KOREA 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


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Important Safety Information 

 

• Read these simple guidelines. Breaking the rules may be dangerous or illegal. 

GENOTECH will not be responsible for any  damages caused by breaking the 

rules. 

• Wireless LAN Card described in this document is approved for use in a wireless 

local area network. 

• Remember to make backup copies of important data.  

• GENOTECH Wireless PCMCIA LAN card supports 3.3V Notebook computers 

only. 

• When you are transferring data, keep your laptop computer stationary Roaming 

between access points (AP) may break the connection.  

• Only qualified service personnel must repair the equipment. 

• All wireless devices may get interference, which could affect performance. 

• Use only the region settings appropriate for the area where the wireless LAN 

Card is used at the present time. Using the card in any other region or with an 

incorrect region setting is prohibited and may be illegal. 

• Operation of any radio transmitting equipment, including a Wireless LAN Card, 

may cause interference with the functionality of inadequately protected medical 

devices. 

• Do not use the wireless LAN Card on aircraft. 

• Do not use the wireless LAN Card at a refueling point. 

• Do not use the wireless LAN Card near inflammable materials or chemicals. 

• Do not use the wireless LAN Card where blasting is in progress. 

•  Do not use the wireless LAN Card when the use of wireless device may cause 

interference or danger.  

• Do not use the wireless LAN Card where the use of cellular terminals is 

prohibited. 

• Microwave oven degrades the performance of wireless LAN drastically. So do not 

use the wireless LAN Card in the environment where Microwave oven is being  

used.  

 

 

 

 

 


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CONTENT 

 

1.    GENERAL 

1-1  Overview of IEEE 802.11 

1-2  Characteristic 

1-3  Composition 

2.    SPECIFICATION 

2-1 General Specification 

2-2 Network Specification 

2-3 Environmental Specification 

2-4 Physical Characteristics  

3.    INSTALLATION 

3-1 Installation Procedure  

3-2 Uninstallation Method 

3-3 Configuration utility 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


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1. GENERAL 

 

1-1 Overview of IEEE 802.11 

 

The IEEE 802.11 specification is a standard for wireless  connectivity for fixed, 

portable, and moving stations within a local area.   

The IEEE 802.11 standard describes the services required by a compliant device to 

operate within an “ad hoc” or  “infrastructure” network, as well as dealing with 

the issues   related to mobility within those networks. Spread spectrum  techniques 

are used to tolerate mobility and multipath effects. They are also a requirement for 

compliance with  FCC, ETSI and those of other regulatory authorities when 

operating within the Industrial, Scientific, and Medical (ISM) frequency band.    

An ad hoc communications network is created quickly and  informally for a 

temporary time period. An infrastructure  network usually requires more planning 

so that wireless stations can communicate over longer distances through  access 

points, and may also communicate with existing  wired LANs using portals. 

The IEEE 802.11 standard describes Media Access Control  (MAC) procedures. 

The principal method of communication is the Carrier Sense Multiple Access with 

Collision Avoidance (CSMA-CA) protocol. Using this protocol, each station senses 

the communications medium ( RF channel), and does not transmit until the channel 

is clear.    This avoids collisions and minimizes the re -transmission of subsequent 

packets.   

The standard also supports the operation of a station within  a wireless LAN that 

may coexist with several overl apping wireless LANs. To accomplish this, a scheme 

of channelization and spread spectrum techniques is used.  Direct Sequence (DSSS) 

and Frequency Hopping (FHSS) spread spectrum techniques are supported by the 

standard and both operate in the 2.4 to 2.4835GHz frequency band (the unlicensed 

ISM band). An infrared technique is also  supported for indoor applications. The 

standard supports a 1  and 2Mbps data rate for both DSSS and FHSS and has  

recently introduced a high data rate standard supporting 5.5  and 11Mbps DSSS 

using Complementary Code Keying  (CCK) modulation. 

The standard has also specified the requirements and services that enable private 

and secure communications to occur.   

 

 

 


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1-2 CHARACTERISTIC   

 

• The GWL-2400P is wireless LAN adapter cards that prov ide wireless connection 

between computers. 

• The GWL-2400P is designed to operate with IEEE 802.11 (wireless LAN 

International Standard) wireless compliant radio cards and uses a CSMA/CA 

(Collision Sense Multiple Access with Collision Avoidance) algorithm  as the 

media access scheme, which makes high speed communication (with minimal 

collision probability) possible. 

• The GWL-2400P supports DSSS (Direct Sequence Spread Spectrum) physical 

layer. This is a radio technique, which scrambles the data prior to transmission 

and uses a correlation technique on receiver to improve the signal to noise ratio 

and makes it possible to communicate  in the office having a wall and a 

compartment. 

• The GWL-2400P for Notebook PC is small and portable as a roaming function is 

provided for users who need network services while maintaining mobility.   

• The GWL -2400P  has an LED (Light Emitting Diode ) on the part of the card.   

• The yellow LED will illuminate when the power is supplied and the card is 

inserted properly. 

• The GWL-2400P support various network software. The network driver is 

provided to support network software such as Windows 95(OSR2)/98, and 

Windows NT 4.0. 

 

 

1-3   COMPOSITION 

 

• Link -i LAN CARD (PC Card Type II, PCMCIA V 2.1, JEIDA 4.1) 

• Installation CD 

• Manual   

 
 
 
 
 

 


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2. SPECIFICATION

 

 

2-1 GENERAL SPECIFICATIONS 

 

*type : PC Card Type II 

*Coverage Area   

Open Space : Up to 350m at 2Mbps / Up to 200m at 11Mbps      

Office Environment : Up to 70m at 2Mbps / Up to 50m at 11Mbps  

*Operating voltage : 3.3V 

±±5% 

*Current co nsumption : Tx - Max. 350mA / Rx – Max. 220mA 

*Security : WEP 64/128bits encryption 

 

 

2-2 NETWORK SPECIFICATIONS 

 

*Network architecture : Ad-hoc, infrastructure  

*Wireless standatd : IEEE 802.11b 

*Operating system : Win 95 OSR2 / 98, Win NT, Win  2000 

*Roaming : IEEE 802.11 compliant with enhanced roaming features 

 

 

2-3 RADIO SPECIFICATIONS 

 

*Center Frequency range  : 

  ISM Band 

   2400 ~ 2483.5MHz ( for US, Canada ) 

   2400 ~ 2497MHz ( for Japan and ETSI ) 

 

  *Channel Capacity : 

11 channels ( US, Canada ) 

13 channels ( ETSI ) 

14 channels ( Japan ) 

 

*Frequency Stability : 

<< fc ±±25ppm 

*Oscillation Method : PLL SYNTHESIZER 

*Wireless medium : Direct Sequence Spread Spectrum 

 


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  *Modulation Techniques : 1Mbps/BPSK, 2Mbps/QPSK, 5.5Mbps/CCK, 

                         11Mbps/CCK 

    *If frequency : 374MHz 

    *If bandwidth : 17MHz 

  *RX/TX Switching speed : 2us (Typ) 

*Transmit spectral mask : -30dBc at First Side Lobes 

*Sensitivity : Min. –80dBm at 2Mbps / Min. – 76dBm at 11Mbps 

  *Output power : Max. 100mW (Typ. 13dBm) 

*Antenna Interface : Dual Diversity Printed Antenna 

 

 

2-4 ENVIRONMENTAL SPECIFICATIONS 

 

*Temperature : 0

°°C to 40°°C in operation / -20°°C to 70°°C in storage 

*Humidity : 95% non-condensing 

 

 

2-5 PHYSICAL CHARACTERISTICS 

 

*Dimension  : 115(H) X 54(W) X 5.5(D) mm   

*Weight : 40g 

 

 

USA CHANNEL LIST 

 

CHANNEL NUMBER 

CHANNEL FREQUENCY 

2412MHz 

2417MHz 

2422MHz 

2427MHz 

2432MHz 

2437MHz 

2442MHz 

2447MHz 

2452MHz 

 


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10 

2457MHz 

11 

2462MHz 

 

 

3. INSTALLATION

   for  Windows 95(OSR2) / 98 

 

* Install the Access Point at first. AP is need in case of Infrastructure network 

mode. 

* Install the network protocol required to communicate on your network. Most 

likely you will need the TCP/IP protocol. 

 

3-1 Installation Procedure  

 

Do not insert the PCMCIA card until you are asked to do so, failure of which 

may result in unsuccessful installation of your PCMCIA WLAN card. 

 

  Please follow the following step one by one in order to install the PCMCIA card 

successfully.    

1)  Power in your computer and allow Windows 95 (OSR2)/98 to load fully. 

2)  Be sure that there is no PCMCIA adapter inserted yet. 

3)  Insert the given Installation CD in the CD-ROM. Select the Setup directory 

   and then click on the SETUP. 

4)  Accept the license agreement. 

5)  Select the ESSID. Default ESSID is WIRELESS.  You can change this 

later also using the configuration utility or network configuration. Click on 

Next. 

6)  Select network type and click on Next. Default is Infrastructure. 

7)  Give the path of the destination folder. To set the path of your choice click 

on Browse and  then click Next. 

8)  It takes a few seconds for copying the utility files. Select the “No, I will 

restart my computer later.” and then click on Finish. 

9)  Insert the PCMCIA card. Illuminating LED and SOUND confirms the 

detection of your PC card. Also you will see the PCMCIA Card icon on the 

right bottom of your screen.  

10) Check for the GENOTECH 11Mbps Wireless PCMCIA LAN Card by 

right clicking on My Computer using the mouse. Select the Device manager 

 


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and then Network Adapters. If you find the Yellow (?) sign on the adapter, 

it shows the installation is not successful. Select the adapter and click on 

Remove. Restart your computer after uninstalling the driver to make the 

changes effective.   

11) Right click on the Network Neighborhood using the mouse. 

12) Select Properties from  the pop up menu. The network box appears and you 

see three main tabs : Configuration, Identification and Access Control. 

13) Click on the Configuration tab and then click on the Add button. Select 

Network Component Type box appears. Click on the Protocol then click 

Add button.  

14) Select Network Protocols box appears. From the list of manufactures, click 

on Microsoft. From the list of network protocols list, select NetBEUI, then 

click OK. 

15) The NetBEUI protocol is now installed. After clicking on OK return back 

to Network Component Type box. 

16) Repeat the step 13 and 14 to add IPX/SPX protocol. 

17) Repeat the step 13 and 14 to add TCP/IP protocol. 

18) Click on the TCP/IP option for setting the IP address for your computer. 

You can select either Static or DHCP settings. If you use the static IP setup 

then enter the IP value, Subnet masking, DNS, Domain/Workgroup name, 

and Gateway Address values. After setting these parameters appropriately, 

click OK to return to Network Component Type and you can select the File 

and Printer Shari ng options as well as the Access to your computer by 

other users connected to that network by setting the computer sharing 

options. Click OK. 

19) Screen message do you want to restart your Computer will pop up. Select 

Yes. It will shut down your computer and will restart. 

 

 

3-2 Uninstallation Method 

 

If you want to unistall the PCMCIA card under Win 95 (OSR2)/98, click on the 

Start at the left bottom of your screen. Select the Programs. Click on the 

GENOTECH and click on Uninstall. Confirm message about removing the 

“ GENOTECH uninstall” and all of its components appear. Click on Yes. 

UnistallShield removes the software  “ GENOTECH uninstall” successfully. Click 

 


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on OK to finish the uninstall procedure. 

 

 

 

3-3 Configuration utility 

during the installation of your GE NOTECH Wireless LAN Card, configuration 

utility is also installed. You can see the icon at the right bottom of your screen. 

Double clicking on that icon will show you the screen as shown below. 

 

 

 

State : State explains whether the client is connected to  ESS or not. It also shows 

the identification MAC address of the BSS to which this is connected currently. 

Current Channel : Channel number is the channel available for the Communicat 

ions between the clients and AP or between the clients only. In case of the 

Infrastructure Network Mode, the channel number is scanned automatically (Need 

not to worry about setting the channel number), while in case of the Ad-hoc 

Network Mode; the channel number is set by the client and can be changed by the 

client later. 

Link Quality : This is the measure of the radio link.   

Signal Strength : This is the measure of the signal Strength. The measured signal 

Strength gives the overall Link Quality and Connection Status. 

 


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You can change the configuration by clicking on the Configuration Change. When 

you click on the Configuration Change, you see the screen given below.  

 

 

 

Configuration Change screen allows you to set the parameters as explained below.  

Mode : You can set the Network Mode to Infrastructure or Ad-hoc. 

SSID : The SSID can be changed to any value. But that should be the same that of 

AP. In case of Ad-hoc Mode, the SSID should be same for all clients. 

Ethernet :   

TX Rate : The transmission rate at which the data packets are transmitted by the 

client or AP. You can set th is to Auto select 1 or 2 Mbps, Fixed 1 Mbps, Fixed 2 

Mbps, Fixed 5.5 Mbps, Fixed 11Mbps or Full Auto (1 to 11Mbps). 

 

Important : You must know the TX Rate that your AP can support. Failure to 

which may cause the undesired results. 

 

WEP Required : WEP stands for Wired Equivalent Privacy. WEP is an encryption 

scheme that provides the secure wireless data communications to the users. WEP 

uses a 40-bit key to control the network access. In order to decode the data 

transmission, each wireless client on the netwo rk must use the identical 40-bit key.   

PS Mode : PS stands for Power Saving Mode. 

Channel : You can change the channel number. In case of the Ad-hoc Network 

Mode, the change in the channel number is effective. In case of the Infrastructure   

 


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Network Mode,  changing the channel number is of no concern as the channel is 

scanned automatically. Please see the table for the requirements of different 

countries and the channel frequency. 

 

After changing the settings in the Configuration Change Dialog box, click on 

Apply Changes. It takes a few seconds to set the changes that you made. Then you 

can visualize the Connection State, Link Quality, Signal Strength respectively. 

 

 

 

WEP Security : To provide the secure communication over the wireless medium, 

we have provided the WEP key. There are two ways of generating this key. This 

key is an important in protecting the illegal access to the wireless networks. 

 

You have to set the key at the Access Point also. And all the users who want to 

contact/share the resources must type the same key.  The WEP key works in the 

infrastucture mode only. There are two option in case of the WEP. You can select 

either of Disable, and Mandatory. If you select Disabled, the communications 

between clients and clients and AP is not secure. If you select mandatory, you need 

to setup the AP also and enter the same Key for communicating other clients 

associated with the AP or with AP itself. 

 

WEP Key Generation : There are two ways of generating the WEP key. The first is 

 


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by entering any text in the Passphrase. And click on Generate. It will generate four 

WEP keys Key 1, Key 2, Key 3, and Key 4. you can select any key for the security. 

If you do not select any Key, Key 1 is selected, as it is default key. Then click on 

Write and it will update the registry and driver. 

 

Another WEP key generation method is by inserting the Key values directly from 

the keyboard. And click on the Write to update driver and registry. Select the Key 

number and use that Key for accessing the Access Point. If the Key is not entered 

correctly, a client cannot access the resources. This Key value protects the illegal 

access to the wireless network resources. As the wireless channel is more prone to 

the illegal access, WEP provides the users safe access.