O6M-WM250WLAN Module

11Mbps Wireless LAN Module Quick Guide Rev 0.9 Regulatory Compliance FCC 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 resi- dential 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 interfer- ence 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 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. You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment. Statements Needed to be Shown on End Product Since this module is installed inside the end product, the end product should be affixed a label on visible area show- ing that this product contain a RF module, and also its FCC ID. FCC Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. Wireless LAN module quick guide ii Table of contents CHAPTER 1 Introduction Features What is Wireless LAN? LAN Modes Notes on wireless LAN configuration CHAPTER 2 Hardware installation Hardware description Status LEDs CHAPTER 3 Using the Wireless Utility Installation & description APPENDIX A Troubleshooting Q&A APPENDIX B Specifications 1 Chapter 1 Chapter 1Chapter 1 Chapter 1 Introduction Thank you for using the Wireless LAN module. This high-speed Wireless LAN module provides you with an inno- vative wireless networking solution. The module is easy to set up and use. With this innovative wireless technology, you can share files and printers on the network—without inconvenient wires! Now you can carry the LAN in your pocket! Features • Wire-free access to networked resources from anywhere beyond the desktop • Low interference & high susceptibility guarantee reliable performance • Delivers data rate up to 11 Mbps • Dynamically shifts between 11, 5.5, 2, and 1 Mbps network speed, based on signal strength, for maximum avail- ability and reliability of connection • Support two external antennas with LEDs indicating Power and Link • Uses 2.4GHz frequency band, which complies with worldwide requirement • Used on embedded operating systems • Ensures great security by providing the Wired Equivalent Privacy (WEP) defined in the IEEE 802.11 standard Wireless LAN module quick guide 2 What is Wireless LAN? Wireless Local Area Network (WLAN) systems offer a great number of advantages over traditional wired sys- tems. WLANs are flexible and easy to setup and manage. They are also more economical than wired LAN systems. Using radio frequency (RF) technology, WLANs transmit and receive data through the air. WLANs combine data connectivity with user mobility. For example, users can roam from a conference room to their office without being disconnected from the LAN. Using WLANs, users can conveniently access shared information, and network administrators can configure and augment networks without installing or moving network cables. WLAN technology provides users with many convenient and cost saving features: • Mobility: WLANs provide LAN users with access to real-time information anywhere in their organiza- tion, providing service opportunities that are impossible with wired networks. • Ease of Installation: Installing is easy for novice and expert users alike, eliminating the need to install network cables in walls and ceilings. • Scalability: WLANs can be configured in a variety of topologies to adapt to specific applications and installations. Configurations are easily changed and range from peer-to-peer networks suitable for a small number of users to full infrastructure networks of thousands of users roaming over a broad area. LAN Modes Wireless LANs can be configured in one of two ways: Ad-hoc Networking Also known as a peer-to-peer network, an ad-hoc net- work is one that allows all workstations and computers in the network to act as servers to all other users on the network. Users on the network can share files, print to a shared printer, and access the Internet with a shared modem. However, with ad-hoc networking, users can only communicate with other wireless LAN computers that are in the wireless LAN workgroup, and are within range. Infrastructure Networking Infrastructure networking differs from ad-hoc network- ing in that it includes an access point. Unlike the ad- hoc structure where users on the LAN contend the shared bandwidth, on an infrastructure network the access point can manage the bandwidth to maximize bandwidth utilization. Additionally, the access point enables users on a wireless LAN to access an existing wired network, al- lowing wireless users to take advantage of the wired networks resources, such as Internet, email, file transfer, and printer sharing. Infrastructure networking has the following advantages over ad-hoc networking: • Extended range: each wireless LAN computer within the range of the access point can commu- nicate with other wireless LAN computers within range of the access point. • Roaming: the access point enables a wireless LAN computer to move through a building and still be connected …

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American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 October 24, 2001 RE: Bromax Communications FCC ID: O6M-WM250 There are a couple of items which need clarification on this Application. 1.) Form 731 lists RF Power Output as 68mW. Measured Power Output lists 27mW. Specifications in manual list 31.6mW (typical). Which is correct? 2.) Please provide greater detail on the antennas used during testing. Identify by type, gain; and, if possible, manufacturer and part number. Please upload this information as a separate document to the RF Exposure Exhibit. Thanks, William H. Graff Examining Engineer President and Director of Engineering mailto:[email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

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FCC ID: O6M-WM250 ADT No.900717R01 Operational Description The transmitter of the EUT (WLAN Module) is powered by host equipment via a modified PCMCIA interface. The antenna is Omni dipole antenna, and the antenna connector type is MCX. Under normal use condition, the user has to keep at least 20cm separation distance between radiator and the body of the user. The other instruction, please have a look at the users manual. The antenna spec please refer as following data: Antenna Gain 3dBi1dBi Model No. IW-151RB-117IH-242A2-171 DSSS Information This device is Direct Sequence Spread Spectrum, the data is mixed by pseudorandom code which is an orthogonal code. The mixed data is digital modulated by BPSK and QPSK technique depends on the data rates. The CCK coding is applied for increasing the data rate, and also the processing gain will be increased. The bit rates are 1,2,5.5,11Mbps, the symbol rates are 1,1,1.375,1.375Mbps, the chip rates are always 11Mbps. So, the Chip/symbol is 11,11,8 and 8 respectively. Although is higher bit rate, the processing gain is lower than 10, but the CCK coding used in higher bit rate will provide 2.2dB coding gain.

FCC ID: O6M-WM250 ADT No.: 900717R01 FCC TEST REPORT REPORT NO.: RF900717R01 MODEL NO.: WM250-IF ACCORDING: FCC Guidelines for Human Exposure IEEE C95.1 APPLICANT:BROMAX COMMUNICATIONS, INC. ADDRESS: No.20, Kuang Fu Road, Hsinchu Industrial Park Hukou, Hsinchu, Taiwan, R.O.C. ISSUED BY:Advance Data Technology Corporation LAB LOCATION:47 14th Lin, Chiapau Tsun, Linko, Taipei, Taiwan, R.O.C. 0528 Lab Code: 200102-0 FCC ID: O6M-WM250 ADT No.: 900717R01 RF Exposure Measurement (Mobile Device) 1. Introduction 2.4 GHz frequency band is regarded specially as a dangerous band for its heating harmfulness to the human body. That’s why microwave oven is operating in this frequency band. The manufacturer whose product is working in this frequency band is obligatory to prove the harmfulness of his product. In this document, we try to prove the safety of radiation harmfulness to the human body for our product. The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. The Gain of the antenna used in this product is measured in a Fully Anechoic Chamber (FAC), and the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. 2. Classification The antenna of the product, as the warning statement on users manual, is at least 20 cm away from the body of the user. Warning statement for keeping 20 cm separation distance and the prohibition of operating next to a person has been printed on the users manual. So, this product is classified as the Mobile Device. 3. RF Exposure Limit According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environmental impact of human exposure to radio-frequency (RF) radiation as specified in 1.1307(b). FCC ID: O6M-WM250 ADT No.: 900717R01 LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Average Time (minutes) (A)Limits For Occupational / Control Exposures 30-30061.40.1631.06 300-1500......F/3006 1500-100,000......56 (B)Limits For General Population / Uncontrolled Exposure 30-30027.50.0730.230 300-1500......F/150030 1500-100,000......1.030 F = Frequency in MHz 4. Friis Formula Friis transmission formula : Pd = (Pout*G) / (4*pi*r 2 ) where Pd = power density in mW/cm 2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm Pd is the limit of MPE, 1 mW/cm 2 . If we know the maximum Gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Ref. : David K. Cheng, Field and Wave Electromagnetics, Second Edition, Page 640, Eq. (11-133). 5. EUT Operating condition The software provided by Manufacturer enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. FCC ID: O6M-WM250 ADT No.: 900717R01 6. Test Results 6.1 Antenna Gain (A) The maximum Gain measured in Fully Anechoic Chamber is 1 dBi or 1.26 (numeric). Antenna Gain (B) The maximum Gain measured in Fully Anechoic Chamber is 3 dBi or 2.0 (numeric). 6.2 Output Power Into Antenna & RF Exposure Distance : For (A) antenna gain 1dBi CHANNEL CHANNEL FREQUENCY (MHz) OUTPUT POWER TO ANTENNA (mW) MINIMUM ALLOWABLE DISTANCE ( r ) FROM SKIN (Centi-Meter) 1241227.041.65 6243726.671.64 11246234.491.86 For (B) antenna gain 3dBi CHANNEL CHANNEL FREQUENCY (MHz) OUTPUT POWER TO ANTENNA (mW) MINIMUM ALLOWABLE DISTANCE ( r ) FROM SKIN (Centi-Meter) 1241227.042.07 6243726.672.06 11246234.491.97 The minimum allowable distance is very close to the enclosure of the antenna and is very far away from the human being under normal use condition.

FCC ID: O6M-WM250 Report No.: RF900717R01 1 Issued: September 26, 2001 FCC TEST REPORT REPORT NO.: RF900717R01 MODEL NO.: WM250-IF RECEIVED: July 17, 2001 TESTED: July 17 ~ October 16, 2001 APPLICANT: BROMAX COMMUNICATIONS, INC. ADDRESS: No.20, Kuang Fu Road, Hsinchu Industrial Park Hukou, Hsinchu, Taiwan, R.O.C. ISSUED BY: Advance Data Technology Corporation LAB LOCATION: 47 14th Lin, Chiapau Tsun, Linko, Taipei, Taiwan, R.O.C. This test report consists of 35 pages in total. It may be duplicated completely for legal use with the approval of the applicant. It should not be reproduced except in full, without the written approval of our laboratory. The client should not use it to claim product endorsement by CNLA, NVLAP or any government agencies. The test results in the report only apply to the tested sample. 0528 Lab Code: 200102-0 FCC ID: O6M-WM250 Report No.: RF900717R01 2 Issued: September 26, 2001 Table of Contents 1CERTIFICATION ........................................................................................... 4 2SUMMARY OF TEST RESULTS ................................................................... 5 3GENERAL INFORMATION............................................................................ 6 3.1GENERAL DESCRIPTION OF EUT.............................................................. 6 3.2DESCRIPTION OF TEST MODES ................................................................ 7 3.3GENERAL DESCRIPTION OF APPLIED STANDARDS ............................... 7 3.4DESCRIPTION OF SUPPORT UNITS .......................................................... 8 4TEST TYPES AND RESULTS ....................................................................... 9 4.1CONDUCTED EMISSION MEASUREMENT ................................................ 9 4.1.1LIMITS OF CONDUCTED EMISSION MEASUREMENT .............................. 9 4.1.2TEST INSTRUMENTS (A)............................................................................. 9 4.1.3TEST INSTRUMENTS (B)........................................................................... 10 4.1.4TEST PROCEDURES ................................................................................. 11 4.1.5TEST SETUP .............................................................................................. 11 4.1.6EUT OPERATING CONDITIONS ................................................................ 12 4.1.7TEST RESULTS (A) .................................................................................... 13 4.1.8TEST RESULTS (B) .................................................................................... 19 4.2RADIATED EMISSION MEASUREMENT ................................................... 25 4.2.1LIMITS OF RADIATED EMISSION MEASUREMENT ................................. 25 4.2.2TEST INSTRUMENTS................................................................................. 26 4.2.3TEST PROCEDURES ................................................................................. 27 4.2.4TEST SETUP .............................................................................................. 28 4.2.5EUT OPERATING CONDITIONS ................................................................ 28 4.2.6TEST RESULTS (A) .................................................................................... 29 4.2.7TEST RESULTS (B) .................................................................................... 33 4.3.6DB BANDWIDTH MEASUREMENT .......................................................... 37 4.3.1.LIMITS OF 6dB BANDWIDTH MEASUREMENT ........................................ 37 4.3.2.TEST INSTRUMENTS................................................................................. 37 4.3.3.TEST PROCEDURE.................................................................................... 38 4.3.4.TEST SETUP .............................................................................................. 38 4.3.5.EUT OPERATING CONDITIONS ................................................................ 38 4.3.6.TEST RESULTS .......................................................................................... 39 4.4.MAXIMUM PEAK OUTPUT POWER .......................................................... 43 4.4.1.LIMITS OF MAXIMUM PEAK OUTPUT POWER MEASUREMENT ........... 43 4.4.2.TEST INSTRUMENTS................................................................................. 43 FCC ID: O6M-WM250 Report No.: RF900717R01 3 Issued: September 26, 2001 4.4.3.TEST PROCEDURES ................................................................................. 44 4.4.4.TEST SETUP .............................................................................................. 44 4.4.5.EUT OPERATING CONDITIONS ................................................................ 44 4.4.6.TEST RESULTS .......................................................................................... 45 4.5.POWER SPECTRAL DENSITY MEASUREMENT ...................................... 46 4.5.1.LIMITS OF POWER SPECTRAL DENSITY MEASUREMENT ................... 46 4.5.2.TEST INSTRUMENTS................................................................................. 46 4.5.3.TEST PROCEDURE.................................................................................... 47 4.5.4.TEST SETUP .............................................................................................. 47 4.5.5.EUT OPERATING CONDITIONS ................................................................ 47 4.5.6.TEST RESULTS .......................................................................................... 48 4.6.BAND EDGES MEASUREMENT ................................................................ 52 4.6.1.LIMITS OF BAND EDGES MEASUREMENT .............................................. 52 4.6.2.TEST INSTRUMENTS................................................................................. 52 4.6.3.TEST PROCEDURE...............................................................................…

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FCC ID: O6M-WM250 Report No.: RF900717R01 59 Issued: September 26, 2001 5 PHOTOGRAPHS OF THE TEST CONFIGURATION CONDUCTED EMISSION TEST FCC ID: O6M-WM250 Report No.: RF900717R01 60 Issued: September 26, 2001 RADIATED EMISSION TEST