GemTek Technology F901210 Wireless LAN Card User Manual Manual

Gemtek Technology Co., Ltd. Wireless LAN Card Manual

Revised Manual

Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   1        11Mbps Wireless LAN CF Card  WL-379 F  User's Manual                                       Dec. 26, 2001 Gemtek Technology Co., Ltd.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   2  Copyright statement  No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, whether electronic, mechanical, photocopying, recording, or otherwise without the prior writing of the publisher.  Printed in Taiwan, Dec. 2001
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   3Federal Communication Commission Interference Statement  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 instructions, may cause harmful 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 of the following measures: -  Reorient or relocate the receiving antenna. -  Increase the separation between the equipment and 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 radio/TV technician for help.  FCC Caution:To assure continued compliance, (example - use only shielded interface cables when connecting to computer or peripheral devices).  Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment.  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, and (2) this device must accept any interference received, including interference that may cause undesired operation.  This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.                                      IMPORTANT NOTE:Federal Communications Commission (FCC) Radiation Exposure StatementThis equipment complies with FCC radiation exposure limits set forth for anuncontrolled environment. In order to avoid the possibility of exceeding the FCC radio frequencyexposure limits, human proximity to the antenna shall not be less than 20 cm (8 inches) during normaloperation.This transmitter must not be co-located or operating in conjunction with any other antenna ortransmitter.This transmitter should be turned off when next to the body of the user.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   4 R&TTE Compliance Statement This equipment complies with all the requirements of the DIRECTIVE 1999/5/EC OF THE EUROPEAN PARLIAMENT AND THE COUNCIL of 9 March 1999 on radio equipment and telecommunication terminal Equipment and the mutual recognition of their conformity (R&TTE).  The R&TTE Directive repeals and replaces in the directive 98/13/EEC (Telecommunications Terminal Equipment and Satellite Earth Station Equipment) As of April 8, 2000.  Safety This equipment is designed with the utmost care for the safety 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 manual and of the computer manufacturer must therefore be allowed at all times to ensure the safe use of the equipment.  EU Countries intended for use The ETSI version of this device is intended for home and office use in Austria, Belgium, Denmark, Finland, France(with Frequency channel restrictions), Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.  The ETSI version of this device is also authorized for use in EFTA member states Iceland, Liechtenstein, Norway and Switzerland.  EU Countries Not intended for use  None.  Potential restrictive use France: Only channels 10,11,12, and13
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   5.Contents 1. Introduction …………………………………………………………….………..4  2. Wireless LAN Basics..............................................................................................................7 3. Installation for Windows platform .....................................................................................8 3.1. Installation Overview……………………………………………………………………………...9 3.2. Install Procedure for Windows XP………………………………………………………….10 3.3. Install Procedure for Windows 98/ME/2000 ……………………………………12 3.4. CE Install Procedure…………………………………………………………………………….23 4. Configuration Utility…………………………………………………………………………………29 4.1 Link Info ......................................................................................................................................30 4.2 CONFIGURATION……………………………………………………………………………………………………………………………….32 4.3 ENCRYPTION………………………………………………………………………………………………………………………………………..34 4.4 ABOUT……………………………………………………………………………………………………………………………………………………..36  5. Troubleshooting......................................................................................................................37 6. Technical specifications of Wireless LAN...................................................................39
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   6     1. Introduction  Thank you for purchasing your 11Mbps Wireless LAN CF Card. This manual will assist you with the installation procedure.   The package you have received should contain the following items:  •=11Mbps Wireless LAN CF Card  •=User's manual •= CD containing Wireless LAN Management utility and drivers  Note: if anything is missing, please contact your vendor   The CD contains drivers and Configuration Utility program that is used for managing the Wireless LAN CF Card and establishing the wireless connection with your Local Area Network.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   72. Wireless LAN Basics Wireless LAN (Local Area Networks) systems offer a great number of advantages over a traditional, wired system. Wireless LANs (WLANs) are more flexible, easier to setup and manage and often more cost effective than their wired equivalence.  Using radio frequency (RF) technology, WLANs transmit and receive data over the air, minimizing the need for wired connections. Thus, WLANs combine data connectivity with user mobility, and, through simplified configuration, enable movable LANs.  With wireless LANs, users can access shared information without looking for a place to plug in and network managers can set up or augment networks without installing or moving wires. Wireless LANs offer the following productivity, convenience and cost advantages over traditional wired networks:     •=Mobility - Wireless LAN systems can provide LAN users with access to real-time information anywhere in their organization. This mobility supports productivity and service opportunities not possible with wired networks.  •=Installation Speed and Simplicity - Installing a wireless LAN system can be fast and easy and can eliminate the need to pull cable through walls and ceilings.   •=Installation Flexibility - Wireless technology allows the network to go where wires cannot go.  •=Reduced Cost-of-Ownership - While the initial investment required for wireless LAN hardware might be higher than the cost of wired LAN hardware, overall installation expenses and life-cycle costs will be significantly lower. Long-term cost benefits are greatest in dynamic environments requiring frequent moves, adds, and changes.   •=Scalability - Wireless LAN systems can be configured in a variety of topologies to meet the needs of specific applications and installations. Configurations are easily changed and range from peer-to-peer to full infrastructure networks, also allow roaming over a broad area.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   83. Installation for Windows platform The following section will assist you to in installing wireless LAN CF Adapter successfully. You will first install software (Utility) and then insert the Wireless LAN CF Adapter, and finally set the network properties to accommodate resource sharing and select the type of wireless network that you wish to install. The Wireless LAN CF card can easily be installed and used, without bothering to connect cables for keeping your computer to use network resources.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   93.1. Installation Overview Here are some steps you will perform in establishing your wireless network connection:  Install the Access Point at first. AP is needed in case of Infrastructure network mode.  Install the software using the Install CD.  Install the Wireless LAN CF Card (WIRELESS LAN 11Mbps CF Adapter). Install the network protocol(s) required to communicate on your network. Most likely you will need the TCP/IP protocol.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   103.2. Install Procedure for Windows XP  1.  Insert your CF card into PCMCIA slot of your system, and then system will detect new hardware.                               Select “Install from a list or specific location (Advanced) “, then click Next to continue.                                Give the directory where you have stored the Win XP driver.  Click Next to continue.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   11 Once your system detected the driver, Microsoft will show a warning message as below.                            Click “ Continue Anyway ” for next step.                             After copy the file to your system, then the setup is finish.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   123.3. Install Procedure for Windows 98/ME/2000    Please follow the following steps one by one in order to install the WLAN CF Adapter successfully.  Note: Install WLAN CF card on your laptop PC must add additional PCMCIA adapter.   1. Power on your computer and allow Windows 98/ME/2000 to load fully. 2. Be sure that there is no Wireless LAN 11Mbps CF Adapter inserted yet.  3. Insert the given Installation CD in the CD-ROM and then click on the Setup.                                          At the “ Welcome” window, Click Next.         Note: Do not insert the WLAN CF Adapter until you are asked to do so, failure of which may result in unsuccessfulinstallation of your  WLAN device.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   13  4. Accept the license agreement.                                       Accept the license agreement. Click Yes to accept.                                              Setup is complete. Click Finish.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   14  5. Insert  Wireless LAN  11 Mbps CF Adapter into slot  Windows will recognize the WLAN adapter and auto detect the driver, if the system did not find the driver automatically, please install the driver manually.   .                                                          Click Next .
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   15                                      Click Next .                                                   Click Next.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   16                                                               Click Yes to finish the setup & restart the computer.             6.  Click the right button of mouse on My Computer  Properties  Device Manager.   Check whether it has WLAN adapter in one of the sockets or not.  If you find Wireless LAN 11Mbps Adapter in one of the sockets, it means the card is detected properly.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   17   7.   Click right button of mouse on the Network Neighborhood .  8. Select Properties from the pop up menu. The network box appears and you see three main tables: Configuration, Identification, and Access Control.                                     9.  Click on the Configuration tab and then click on the Add button. Select Network Component Type box appears. Click on the Protocol the click the Add button.   10. 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.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   18                                     11. The  NetBEUI protocol is now installed. After clicking on OK return back to Network Component Type box. 12. Repeat the step 15 and 16 to add IPX/SPX protocol. 13. Repeat the step 15 and 16 to add TCP/IP protocol. 14. Click on the TCP/IP option for setting the IP address for your computer. You can select either Static or  DHCP setting. 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 Sharing options as well as the Access to your computer like other users connected to that network by setting the computer sharing options. Click on OK.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   19                                          15. Screen message do want to restart your Computer will pop up. Select Yes. It will shut down your computer and restart.       Important: Restart your computer to make the changes effective before you reinstall thedriver.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   20 Uninstall Procedure   If you want to uninstall the WLAN adapter, please follow the steps as below,  Step 1:    From right bottom corner of system bar, click right button of mouse on     , then will show a window as below                              Click Yes.   Step 2:   From Start menu  Settings  Control Pannel  Add / Remove Programs Remove “  Wireless LAN 11Mbps for Windows.”                                 Click Change /Remove
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   21 Step 3:   From System Properties  Hardware  Device Manager  Network adapters Click right button of mouse on Wireless LAN 11Mbps Adapter  Uninstall…                              then will show a message                                                 Click OK.   The Uninstallation is complete.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   22      Step 4:    Restart your Computer.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   233.4. CE Install Procedure    Please be note that the current version of driver only supports Strong ARM processor.   Note: Be sure that your PC or Notebook has installed software such as Active Sync for transmit data to your PDA / handhold PC.    We assume that you have installed Windows CE Services on your desktop PC and that you have connected the PC to PDA or handheld PC with a serial connection.  Note: The CF card shall not be plugged into PDA/handheld PC if not stated.   1) Run the Gemtek 1718_for WinCE300 PPC.exe from the CD. This will bring up installation screen:                                              If you would continue go through the process by pressing “Next” button, otherwise select “Cancel” if you wish to stop the installation process.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   24    Accept license agreement by click “Yes” button. If you disagree with terms of stated, then press “No” & exit the installation. When software license agreement is accepted, system will bring you user info dialog.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   25               Click Finish to complete the installation.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   26  2)  Plug-in the Wireless LAN CF/PC card into the card slot of your PDA/handhold PC  . 3)  Go to the Start menu, select Settings subfolder. Then select Connections tab from the bottom of the page.   4) In the Setting page, tap on Network icon. This step will open Network Connections dialog       On the Network Configuration dialog select Gemtek Wireless LAN PC/CF Card Driver and double tap on it, this will bring you to IP Settings dialog.          5) If your network supports DHCP server, select the first button. Otherwise enter static IP in the field. If you are not sure about the values of these fields, ask your Internet Service Provider for detail.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   27    6) Select “Name Servers” page for DNS settings.        Enter Domain Name Server  (DNS) address & WINS (sometimes it is assigned through DHCP services automatically) in appropriate tab.      NOTE: If Domain Name Server address is not set, networking using Explorer will not work EVEN if the user enters IP addresses. This is due to internal Windows CE architecture.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   28  CE uninstall procedure    Tap on the Start Menu, select Settings tab. Tap on System tab from the bottom of the page, Tap on the on the Remove Programs. Select Gemtek WL-379F and tap on the Remove button will uninstall the program.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   294. Configuration Utility 11Mbps Wireless LAN CF Card uses its own management software. All functions controlled by user are provided by this application. Usually this application starts automatically,  or click    icon from control pannel to start the Manager application. A new icon -   should appear in your Icon tray. If the icon is in red, it means that 11Mbps Wireless LAN CF Card NIC configuration is invalid or incomplete. Sometimes icon can be colored in red. This may happen when driver is in Pseudo BSS mode or communication is defined poor connection or incorrectly.  Figure 1 Icon tray with a new icon                                 User can navigate through “sheets”, by clicking tabs.  “OK” button will minimize window, and    “Cancel” (or X button) will close application. Here we explain the use and meanings of the various screen messages.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   304.1 Link Info  -  State  This field is used to display the current state of the driver.  When the state is “Associated “ means normal flow of operation in Infrastructure mode. The PC is connected to access point. BSSID is shown in the form of hex digits. Networking is available.    A state of “Scanning ” means that the node is searching for available access point and unable   detects the SSID for an available access point within range.  This field will also display an error message if for some reason the driver failed to initialize.  -  Rescan      Pressing the rescan button causes the driver to restart and begin its Connection Procedure.  The        connection procedure differs depending on the Mode of the driver.    Infrastructure Mode   - The driver will scan all available channels continuously until it finds one or more Access Points that matches its SS ID.  At that point it will try and authenticate and associate with the Access Point.       802.11Ad Hoc Mode   - The driver will scan for 5 seconds looking for an existing Ad Hoc network      using the same SS ID.    -  Current Channel and Tx Rate     Shows the channel of the radio and transmit rate are being currently used for an active connection.         This value has no meaning when the radio is “Scanning”  -  Throughput     These two fields display the instantaneous wireless Receive and Transmit throughput displayed in         bytes per second.  These values are updated every two seconds.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   31 -  Link Quality The Link Quality bar graph is only active when the node is in Infrastructure Mode.  The bar graph displays the quality of the link between the node and its Access Point.  A label summarizes the quality of the link over the bar graph, which can take on one of the following values:   “Poor”      “Weak”  “Fair”  “Good”  “Excellent”    -  Signal Strength       The Signal Strength bar graph is only active when the node is in Infrastructure Mode. The bar           graph displays normalized signal strength as reported by the radio, averaged over all frames over      100 bytes long that are received from the Access Point.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   32  4.2 CONFIGURATION  The Configuration Tab contains several fields where operating parameters of the driver can be viewed or changed.  Changes to any of the parameters in this panel can be applied to the driver without the need to reboot the PC.                                              Restore Defaults: Pressing this button restores each field in the panel to its default value.  The Apply Changes button or OK must be pressed before the default values are saved to the driver and registry.  Undo Changes: Pressing this button reverts all fields in the panel back to their original values that                                were present when the Configuration Utility was opened from the Task Bar.   Apply Changes: This button becomes active only when one of the fields has been modified.  Pressing                              this button applies the changed values to the driver and saves them to the registry.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   33 -  Mode       This field allows you to select from a list of supported Network “Modes”.  The modes displayed will have two values:  “802.11Ad Hoc” and “Infrastructure”.    802.11 Ad Hoc   - This is the 802.11 peer-to-peer mode of operation.  In 802.11Ad Hoc only one wireless “cell” is supported for each different SSID.  All communication is done from Client to Client without the use of an Access Point. 802.11 Ad Hoc networking uses the same SSID for establishing the wireless connection.        Infrastructure  - This mode of operation requires the presence of an 802.11 Access Point.  All communication is done via the Access Point, which relays packets to other wireless Clients in the BSS as well as to nodes on a wired network such as Ethernet.       TX Rate – The transmission rate at which client of AP transmits the data packets. You may set this to fixed 1Mbps, fixed 2 Mbps, fixed 5.5 Mbps or 11 Mbps.        PS Mode -  Power saving mode.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   344.3 ENCRYPTION                                                               You may desire an additional measure of security on your wireless network, which can be achieved by using WEP (Wired Equivalent Privacy) encryption.  WEP encrypts each frame transmitted from the radio using one of the Keys entered from this panel.  When an encrypted frame is received it will only be accepted if it decrypts correctly.  This will only happen if the receiver has the WEP Key used by the transmitter.  This panel allows the entry of four keys for 64/128-bit encryption according to WEP function select. To be written to the driver and registry, each key must consist of hex digits, which means that only digit 0-9 and letters A-F are valid entries. If entered incorrectly program will not write keys to a driver. Alternatively a Pass-phrase can be entered which is used as a “seed” to randomly generate the four keys.  This saves considerable time since the same keys must be entered into each node on the wireless network.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   35  -  Key 1 – Key 4 These four fields can be used to manually enter the keys. This may be necessary if you wish this node to match keys in a different vendor’s product. These fields also display the keys when they are generated using a Pass-phrase.  -  Default Tx Key This button updates the driver with the four keys displayed in Key1 through Key4.  The keys are also written to the registry for permanent storage.   Apply This button updates the driver with the four keys displayed in Key field. The keys are also written to the registry for permanent storage. This button clears all the bytes in the four keys, useful when manually entering and you wish to start over.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   36 4.4 ABOUT      About tab shows the product version including the detail of Driver, Configuration Utility, and NIC firmware version. Users must use this version number when reporting their problems to technical support.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   375. Troubleshooting             If you encounter any problems during the installation, or to confirm that the WLAN 11Mbps device is installed properly, please read the following troubleshooting section.    In Windows 98:      To check that the WLAN 11Mbps device is installed properly, please do the following: 1.  Go to START>SETTINGS>CONTROL PANEL>NETWORK.  Choose the Configuration Tab.  If you find the WLAN 11Mbps Adapter, it means the card is installed properly. If you see the Yellow Question-mark (?) means the resources are conflicting. (Please read further in this section for solutions.) -or- 2.  Right click on My Computer and select Properties.  Select the Device Manager  and click on the Network Adapter. You will find the WLAN 11Mbps Adapter if it is installed successfully.  If you see the Yellow sign, the resources are conflicting.  Click on the PCMCIA Card and then on the PCMCIA Card Service, you can see the status of the PC card.  If there is a yellow sign either on the adapter or the PC card, please check the following.  1.  Check to see if your computer supports 3.3V Card. 2.  Check to see if your computer has a free IRQ.  If not, make an IRQ free by assigning the same IRQ to some devices, for example COM 1, COM 2 can be assigned the same IRQ values. 3.  Check that you have inserted the right card and have installed the proper driver.
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   38Troubleshooting  (Continued)    In Windows 2000:     1. Check the Windows 2000 Diagnostics.  See if there is any conflict in the resource  allocation or the I/O Address, IRQ allocations.  If you find that the IRQ or I/O Addresses are already assigned to some other devices, you must change that value.  I/O Address needs 40h byte length.  2.  Go to the Control panel.  Double click on the PCMCIA Card and you will see WLAN Adapter.  Double clicking on that will show you the Card Information, driver name and the driver file.  You must confirm the name of the driver and the driver file as "prismnic.inf"  and "prismnds.sys".  If you do not find the names listed above, there are some problems and the driver is not installed properly.  Reinstall the driver.  Note: Check the PnP BIOS setup menu and select no in case of the WLAN Adapter installation.
Wireless LAN                                                                                                                                                                                                  User's manual                                                                 11Mbps Wireless LAN CF Card   396. Technical specifications of Wireless LAN   Hardware compatibility −=Compact Flash Type II  Driver support   -   Windows XP −=Windows 98 −=Windows 2000 −=Windows ME -    WinCE ( Strong ARM platform) Standards supported −=IEEE 802.11 standard for Wireless LAN −=All major networking standards (including TCP/IP, IPX) Environmental Operating temperature (ambient): −=-10°C to 50°C (Operating),-20 to 70°C (Storing) −=Max . Humidity: 95% Non-condensing Power specifications Operating voltage: −=+3.3V DC ±5% −=Nominal Temp Range:     15 dBm −=Extended Temp Range:    14 dBm min. −=Transmit Power, 2.7v to 3v:   14 dBm min. Radio specifications Range:  −=per cell indoors approx. 35-100 meters or more  −=per cell outdoors up to 100-300 meters Frequency range:  −=2.4-2.4835 GHz, direct sequence spread spectrum Number of Channels: −=Europe: 13 (1-13 ) −=US: 11 (1-11 ) −=France: 4 (10-13 ) −=Japan: 14 (1-14 )
Wireless LAN  User's manual                                                                 11Mbps Wireless LAN CF Card   40  Antenna system:  −=Internal patch antenna supporting diversity.  Mobility:  −=Seamless roaming across cell boundaries with handover Specific features Supported bit rates: −=11 Mbps −=5.5 Mbps  −=2 Mbps  −=1 Mbps  Data encryption:  −=64 /128 bit WEP Encryption Utility Software:  −=Management utility software  Physical Dimensions   58x42.8x7.15mm

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