QDWWN250GC802.11 b/g WLAN USB Stick

Mike Kuo From: [email protected] Sent: June13 2004 Sunday 7:22 PM To: Mike Kuo Cc: Lai, Harris (E-mail); CCS- James Lee (E-mail); CCS-Taiwan, Ting (E-mail) Subject: FW: Airvast Technology Inc., FCC ID: QDWWN250GC, AssessmentNO.: AN04T3937 6/15/2004 Hi Mike, Here are the replies. Question #1: Schematic diagram can not be read. Please provide a clear copy of schematic diagram. Ans #1: The clear copy is attached. Question #2: Please provide FCC ID label format. Two identical FCC ID label location files were submitted. Ans #2: This is a typo. Attached is the revised label format. SAR portion: Question #3: Page 37/41/43/46/48 and 51 of test report, SAR Vs Z plots indicate that the when the probe is removing from the bottom of flat phantom, the SAR value will be increased near the surface of liquid. Please explain. Ans #3: SAR is re-evaluated and its test report is revised as attached. Question #4: Please provide second SAR peak value as demonstrate in page 41 of test report. Ans #4: Please refer to the revised SAR test report attached in Ans. #3. Question #5: Please explain the differences between model no:WN-250gc and WN-251gc. Ans #5: The difference between these two models is the appearance. User manual: Question #6: Page 18,19 and 20 of user manual have information about the ad-hoc channel and regulatory domain selection for user. In one of software windows during the ad-hoc mode, the frequency list is beyond 2462MHz and have selected for 2484MHz which is restricted band in the U.S. In addition, it listed additional frequency range which is not within the frequency range as documented in this application. Ans #6: The user manual is revised as attached. Best Rgds, WK -----Original Message----- From: Compliance Certification Services [mailto:[email protected]] Sent: Thursday, June 03, 2004 4:31 PM Subject: Airvast Technology Inc., FCC ID: QDWWN250GC, Assessment NO.: AN04T3937 Question #1: Schematic diagram can not be read. Please provide a clear copy of schematic diagram. Question #2: Please provide FCC ID label format. Two identical FCC ID label location files were submitted. SAR portion: Question #3: Page 37/41/43/46/48 and 51 of test report, SAR Vs Z plots indicate that the when the probe is removing from the bottom of flat phantom, the SAR value will be increased near the surface of liquid. Please explain. Question #4: Please provide second SAR peak value as demonstrate in page 41 of test report. Question #5: Please explain the differences between model no:WN-250gc and WN-251gc. User manual: Question #6: Page 18,19 and 20 of user manual have information about the ad-hoc channel and regulatory domain selection for user. In one of software windows during the ad-hoc mode, the frequency list is beyond 2462MHz and have selected for 2484MHz which is restricted band in the U.S. In addition, it listed additional frequency range which is not within the frequency range as documented in this application. Regulatory domain can not be selectable by the user due to the user manual may operate and select the regulatory domain which are not within authorized frequency band. Please address this non-compliance issue. Best Regards Mike Kuo The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information within 60 days of the original e-mail date may result in application dismissal and forfeiture of the filing fee. 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 Mike Kuo <[email protected]> 2004/06/04 07:48 AM "CCS- James Lee (E-mail)" <[email protected]>, "CCS-Taiwan, Ting (E-mail)" <[email protected]>, "CCS-Taiwan, Wklo (E-mail)" <[email protected]> "Lai, Harris (E-mail)" <[email protected]> 6/15/2004 the e-mail address listed below the name of the sender. 6/15/2004

Compliance Certification Services Inc. Report No: 40519202 Date of Issue: May 24, 2004 Page 1 EXTERNAL PHOTOGRPHS OF EUT Model Number: WN-250gc, VS10260-XY (X: revision; Y: sale region), UW11G Compliance Certification Services Inc. Report No: 40519202 Date of Issue: May 24, 2004 Page 2 Model Number: WN-251gc

FCC ID:QDWWN250GC Model:WN-250gc Input:5.0V IC:4761A-WN250GC Made in Taiwan MAC: S/N: 802.11g WLAN USB Stick Model:WN-251gc FCC ID:QDWWN250GC IC:4761A-WN-250GC 802.11g WLAN USB Stick 39*19mm IC-ES003 Class B IC-ES003 Class B FCC ID:QDWWN250GC Model:WN-250gc Input:5.0V IC:4761A-WN250GC Made in Taiwan MAC: S/N: 802.11g WLAN USB Stick IC-ES003 Class B Input:5.0V Model:WN-251gc FCC ID:QDWWN250GC IC:4761A-WN-250GC 802.11g WLAN USB Stick IC-ES003 Class B Input:5.0V

Compliance Certification Services Inc. Report No: 40519202 Date of Issue: May 24, 2004 Page 3 INTERNAL PHOTOGRPHS OF EUT Compliance Certification Services Inc. Report No: 40519202 Date of Issue: May 24, 2004 Page 4

1 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc WN-250gc WN-251gc ANTENNA TEST REPORT 2 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc TABLE OF CONTENTS 1. DESCRIBE OF ANTENNA 2 2. MEASURED SETUP 3 3. ANTENNA MEASURED RESULT 4 3-1. PATTERN 5~14 3 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc 1. DESCRIBE OF ANTENNA: 4 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc 2. MEASURED SETUP: X Mode Y Mode Z Mode Horn Antenna Horn Antenna Horn Antenna S.G S.G S.G 5 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc 3. ANTENNA MEASURED RESULT: 3-1. PATTERN: Unit:dBi POLARIZATION2400MHz 2450MHz 2500MHz E(Peak Gain) -8.721 -8.368 -9.308 X Mode H(Peak Gain) -4.636 -2.894 -4.110 E(Peak Gain) -2.200 -2.805 -3.316 Y Mode H(Peak Gain) -5.395 -4.394 -5.317 E(Peak Gain) -2.407 -2.992 -4.499 Z Mode H(Peak Gain) -3.387 -4.765 -6.092 6 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc H-X-2.4 PEAK-4.636 AVER-5.335 H-X-2.45 PEAK-2.894 AVER-6.313 7 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc H-X-2.5 PEAK-4.11 AVER-7.608 E-X-2.4 PEAK-8.721 AVER-14.856 8 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc E-X-2.45 PEAK-8.368 AVER-14.788 E-X-2.5 PELK-9.308 AVER-17.257 9 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc H-Y-2.4 PEAK-5.395 AVER-10.643 H-Y-2.45 PEAK-4.394 AVER-10.985 10 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc H-Y-2.5 PEAK-5.317 AVER-11.642 E-Y-2.4 PEAK-2.2 AVER-10.046 11 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc E-Y-2.45 PEAK-2.805 AVER-11.433 E-Y-2.5 PEAK-3.316 AVER-12.151 12 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc H-Z-2.4 PEAK-3.837 AVER-12.751 H-Z-2.45 PEAK-4.765 AVER-13.350 13 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc H-Z-2.5 PEAK-6092 AVER-14.437 E-Z-2.4 PEAK-2.407 AVER-8.021 14 Copyright by AirVast Technology Inc. 802.11g WLAN USB Stick WN-250gc, WN-251gc E-Z-2.45 PEAK-2.992 AVER-8.306 E-Z-2.5 PEAK-4.499 AVER-9.71

Compliance Certification Services Inc. Report No: 40519202-SF FCC ID: QDWWN250GC Date of Issue: May 25, 2004 Note: This report shall not be reproduced except in full, without the written approval of Compliance Certification Services Inc. This document may be altered or revised by Compliance Certification Services Inc. personnel only, and shall be noted in the revision section of the document. Page1 of 27 ANSI/IEEE Std. C95.1-1992 in accordance with the requirements of FCC Report and Order: ET Docket 93-62, and OET Bulletin 65 Supplement C FCC TEST REPORT For AirVast Technology Inc. 802.11g WLAN USB Stick Trade Name: AirVast Model: WN-250gc, WN-251gc Wireless 802.11g USB Adapter Trade Name: ViewSonic Model: VS10260-XY (X: revision; Y: sale region) 802.11G USB STICK Trade Name: Ultira Model: UW11G Prepared for AirVast Technology Inc. 4F. Ln. 21, Hain Hua Rd., Kueishan Industrial Park, Taoyuan 330, Taiwan, R.O.C. Prepared by Compliance Certification Services Inc. No. 81-1, Lane 210, Bade Rd. 2, Luchu Hsiang, Taoyuan Hsien, (338) Taiwan, R.O.C. TEL: 886-3-324-0332 FAX: 886-3-324-5235 Compliance Certification Services Inc. Report No: 40519202-SF Date of Issue: May 25, 2004 Page 3 TABLE OF CONTENTS 1. EUT DESCRIPTION ..................................................................................................... 4 2. REQUIREMENTS FOR COMPLIANCE TESTING DEFINED BY THE FCC .... 5 3. DOSIMETRIC ASSESSMENT SYSTEM ................................................................... 5 3.1 MEASUREMENT SYSTEM DIAGRAM .........................................................................6 3.2 SYSTEM COMPONENTS.................................................................................................7 4. EVALUATION PROCEDURES................................................................................... 9 5. MEASUREMENT UNCERTAINTY ......................................................................... 12 6. EXPOSURE LIMIT ..................................................................................................... 13 7. MEASUREMENT RESULTS ..................................................................................... 14 7.1 SYSTEM PERFORMANCE CHECK..............................................................................14 7.2 TEST LIQUID CONFIRMATION ..................................................................................15 7.3 EUT TUNE-UP PROCEDURES......................................................................................16 7.4 SAR MEASUREMENTS RESULTS...............................................................................17 8. EUT PHOTOS .............................................................................................................. 24 9. EQUIPMENT LIST & CALIBRATION STATUS ................................................... 25 10. FACILITIES ................................................................................................................. 26 11. REFERENCES ............................................................................................................. 26 12. ATTACHMENTS ......................................................................................................... 27 Compliance Certification Services Inc. Report No: 40519202-SF Date of Issue: May 25, 2004 Page 4 1. EUT DESCRIPTION Applicant: AirVast Technology Inc. 4F.Ln. 21, Hain Hua Rd., Kueishan Industrial Park, Taoyuan 330, Taiwan, R.O.C. Model Number / Trade Name: WN-250gc, WN-251gc / AirVast VS10260-XY (X: revision; Y: sale region) / ViewSonic UW11G / Ultira Device Category: PORTABLE DEVICES Exposure Category: GENERAL POPULATION/UNCONTROLLED EXPOSUR Test Sample is a: Production unit Modulation type: 802.11b Direct Sequence Spread Spectrum 802.11g Orthogonal Frequency Division Multiplexing (OFDM) Tx Frequency: 2412 ~ 2462 MHz Max. O/P Power: (Conducted/Peak) 17.92dBm Max. SAR (1g): 0.453W/kg Application Type: Certification FCC Rule Part(s): 15C Antennas: Chip Ant. Test Host: IBM P/N: 2672 S/N: 9985H9M (WN-250gc, VS10260-XY, UW11G) (WN-251gc) Compliance Certification Services Inc. Report No: 40519202-SF Date of Issue: May 25, 2004 Page 5 2. REQUIREMENTS FOR COMPLIANCE TESTING DEFINED BY THE FCC The US Federal Communications Commission has released the report and order “Guidelines for Evaluating the Environmental Effects of RF Radiation", ET Docket No. 93-62 in August 1996 [1]. The order requires routine SAR evaluation prior to equipment authorization of portable transmitter devices, including portable telephones. For consumer products, the applicable limit is 1.6 mW/g for an uncontrolled environment and 8.0 mW/g for an occupational/controlled environment as recommended by the ANSI/IEEE standard C95.1-1992 [6]. According to the Supplement C of OET Bulletin 65 “Evaluating Compliance with FCC Guide-lines for Human Exposure to Radio frequency Electromagnetic Fields", released on Jun 29, 2001 by the FCC, the device should be evaluated at maximum output power (radiated from the antenna) under “worst-case” conditions for normal or intended use, incorporating normal antenna operating positions, device peak performance frequencies and positions for maximum RF energy coupling. 3. DOSIMETRIC ASSESSMENT SYSTEM These measurements were performed with the automated near-field scanning system DASY4 from Schmid & Partner Engineering AG (SPEAG). The system is based on a high precision robot (working range greater than 0.9 m) which positions the probes with a positional repeatability of better than ± 0.02 mm. Special E- and H-field probes have been developed for measurements close to material discontinuity, the sensors of which are directly loaded with a Schottky diode and connected via highly resistive lines to the data acquisition unit. The SAR measurements were conducted with the dosimetric probe ES3DV2-SN: 3023 (manufactured by SPEAG), designed in the classical triangular configuration and optimized for dosimetric evaluation. The probe has be…

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Compliance Certification Services Inc. Report No: 40519202-RP FCC ID: QDWWN250GC Date of Issue: May 25, 2004 Note: This report shall not be reproduced except in full, without the written approval of Compliance Certification Services Inc. This document may be altered or revised by Compliance Certification Services Inc. personnel only, and shall be noted in the revision section of the document. Page 1 of 74 FCC 47 CFR PART 15 Subpart B & Subpart C TEST REPORT For AirVast Technology Inc. 802.11g WLAN USB Stick Trade Name: AirVast Model: WN-250gc, WN-251gc Wireless 802.11g USB Adapter Trade Name: ViewSonic Model: VS10260-XY (X: revision; Y: sale region) 802.11G USB STICK Trade Name: Ultira Model: UW11G Prepared for AirVast Technology Inc. 4F, Ln. 21, Hsin Hua Rd., Kueishan Industrial Park, Taoyuan 330, Taiwan, R.O.C. Prepared by Compliance Certification Services Inc. No. 81-1, Lane 210, Bade Rd. 2, Luchu Hsiang, Taoyuan Hsien, (338) Taiwan, R.O.C. TEL: 886-3-324-0332 FAX: 886-3-324-5235 Compliance Certification Services Inc. Report No: 40519202-RP FCC ID: QDWWN250GC Date of Issue: May 25, 2004 Page 2 TABLE OF CONTENTS 1. TEST RESULT CERTIFICATION....................................................................................................3 2. EUT DESCRIPTION ...........................................................................................................................4 3. TEST METHODOLOGY ....................................................................................................................5 3.1 EUT CONFIGURATION........................................................................................................................5 3.2 EUT EXERCISE....................................................................................................................................5 3.3 GENERAL TEST PROCEDURES.............................................................................................................5 3.4 FCC PART 15.205 RESTRICTED BANDS OF OPERATIONS........................................................6 3.5 DESCRIPTION OF TEST MODES...........................................................................................................6 4. INSTRUMENT CALIBRATION........................................................................................................7 5. FACILITIES AND ACCREDITATIONS ..........................................................................................8 5.1 FACILITIES....................................................................................................................................... 8 5.2 EQUIPMENT........................................................................................................................................8 5.3 LABORATORY ACCREDITATIONS AND LISTING..................................................................................8 5.4 TABLE OF ACCREDITATIONS AND LISTINGS.......................................................................................9 6. SETUP OF EQUIPMENT UNDER TEST .......................................................................................10 6.1 SUPPORT EQUIPMENT......................................................................................................................10 6.2 SUPPORT EQUIPMENT ...............................................................................................................10 7. FCC PART 15.247 REQUIREMENTS.............................................................................................11 7.1 6 DB BANDWIDTH.............................................................................................................................11 7.2 PEAK POWER....................................................................................................................................16 7.3 BAND EDGES MEASUREMENT ................................................................................................21 7.4 PEAK POWER SPECTRAL DENSITY....................................................................................................30 7.5 RADIO FREQUENCY EXPOSURE........................................................................................................35 7.6 SPURIOUS EMISSIONS ................................................................................................................36 7.7 POWERLINE CONDUCTED EMISSIONS...............................................................................................70 APPENDIX 1 PHOTOGRPHS OF TEST SETUP .................................................................................73 Compliance Certification Services Inc. Report No: 40519202-RP FCC ID: QDWWN250GC Date of Issue: May 25, 2004 Page 4 2. EUT DESCRIPTION Product 802.11g WLAN USB Stick Trade Name AirVast Model Number WN-250gc, WN-251gc Product Wireless 802.11g USB Adapter Trade Name ViewSonic Model Number VS10260-XY (X: revision; Y: sale region) Product 802.11G USB STICK Trade Name Ultira Model Number UW11G Model Discrepancy All the above models are identical except the model designation Power Supply Powered form the host device Frequency Range IEEE 802.11b,g: 2412 ~ 2462 MHz Transmit Power IEEE 802.11b: 17.86 dBm IEEE 802.11g: 17.69 dBm Modulation Technique IEEE 802.11b: DSSS (CCK; DQPSK; DBPSK) IEEE 802.11g: OFDM Antenna Specification Chip Antenna Gain: -2.2 dBi (max) Note: This submittal(s) (test report) is intended for FCC ID: QDWWN250GC filing to comply with Section 15.107 & 15.109 (FCC Part 15, Subpart B) and Section 15.207, 15.209, 15.247 (FCC Part 15, Subpart C Rules.) Compliance Certification Services Inc. Report No: 40519202-RP FCC ID: QDWWN250GC Date of Issue: May 25, 2004 Page 5 3. TEST METHODOLOGY The tests documented in this report were performed in accordance with ANSI C63.4 and FCC CFR 47 2.1046, 2.1047, 2.1049, 2.1051, 2.1053, 2.1055, 2.1057, 15.107, 15.109 and 15.207, 15.209,15.247. 3.1 EUT CONFIGURATION The EUT configuration for testing …

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Compliance Certification Services Inc. Report No: 40519202-RP FCC ID: QDWWN250GC Date of Issue: May 25, 2004 Page 73 APPENDIX 1 PHOTOGRPHS OF TEST SETUP Radiated Emission Set up Photos Compliance Certification Services Inc. Report No: 40519202-RP FCC ID: QDWWN250GC Date of Issue: May 25, 2004 Page 74 Conducted Emission Set Up Photos