O9C-SL1020BWireless USB Transceiver

3Com Corporation February 24, 2003 3930 W. Parkway Blvd. West Valley City, UT 84120 FEDERAL COMMUNICATIONS COMMISSION 7435 Oakland Mills Road Columbia, MD 21046 Subject: Request for Confidentiality Regarding FCC ID: O9C-SL1020B To Whom It May Concern: In accordance with § 0.459 of CFR 47, 3Com Corporation requests confidentiality for the following items: 1. Block Diagram (Exhibit 4) 2. Schematic Diagrams (Exhibit 5) 3. Operational Description (Exhibit 12) These items contain detailed system and equipment description and related information about the product which 3Com Corporation considers to be proprietary, confidential and a custom design which otherwise would not be released to the general public. Since this design is a basis from which future technological products will evolve, 3Com Corporation also feels that this information would be of benefit to its competitors, and that the disclosure of the information in these exhibits would give our competitors an unfair advantage in the market. Any information for which 3Com has requested confidentiality, but which the FCC may not grant, should be returned to 3Com. Sincerely, Greg Hansen Regulatory Engineer 3930 West Parkway Blvd. West Valley City, UT 84120 (801) 320-7585

Top View of the SL-1020B Bottom View of the SL-1020B

EXHIBIT 1: Labeling and Placement THIS AREA RESERVED FOR BAR CODE Page 1 of 1

Side A of the SL-1020B PCB Side B of the SL-1020B PCB

EXHIBIT 11 Section15.247 (b) (4) Requirement: Spread spectrum devices shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the Commission’s guidelines. See § 1.1307(b) and 2.1093 of this chapter. All equipment shall be considered to operate in a “general population/uncontrolled” environment. Applications for equipment authorization of devices operating under this section must contain a statement confirming compliance with these requirements for both fundamental emissions and unwanted emissions. Technical information showing the basis for this statement must be submitted to the Commission upon request. Demonstration of Compliance: The SL-1020B is classified as a portable device, which is installed so that a minimum separation distance of 2.5 centimeters is maintained between the transmitter’s radiating structure and the body of the user or nearby persons, and the ERP of the SL-1020B is less than 50 mWatts. Therefore, the SL-1020B is categorically excluded from routine environmental evaluation for RF exposure as per § 2.1093. The installation/user manual contains a warning statement that instructs the installer/user that the 2.5 centimeter separation distance must be maintained in order to comply with the RF exposure requirement. Sample of the RF Exposure Statement - CAUTION: FCC RADIO-FREQUENCY EXPOSURE NOTICE This device generates and radiates radio-frequency (RF) energy. In order to comply with FCC RF radiation exposure guidelines for an uncontrolled environment, this equipment has to be installed and operated while maintaining a minimum body to antenna distance of 2.5 cm (1.0 inch).

TEST REPORT FROM: COMMUNICATION CERTIFICATION LABORATORY 1940 W. Alexander Street Salt Lake City, Utah 84119-2039 Type of Report: Certification TEST OF: SL-1020B FCC ID: O9C-SL1020B To FCC PART 15.247, Subpart C Test Report Serial No: 73-7844 Applicant: 3Com Corporation 3930 West Parkway Blvd. West Valley City, UT 84120 Date of Test: January 28, 2003 Issue Date: February 24, 2003 Equipment Receipt Date: January 28, 2003 COMMUNICATION CERTIFICATION LABORATORY TEST REPORT: 73-7844 FCC ID: O9C-SL1020B Page 1 of 60 CERTIFICATION OF ENGINEERING REPORT This report has been prepared by Communication Certification Laboratory to determine compliance of the device described below with the requirements of FCC PART 15.247, Subpart C. This report may be reproduced in full, partial reproduction may only be made with the written consent of the laboratory. The results in this report apply only to the sample tested. - Applicant: 3Com Corporation - Manufacturer’s: 3Com Corporation - Brand Name: 3Com - Model Number: SL-1020B - FCC ID: O9C-SL1020B On this 24 th day of February 2003, I, individually, and for Communication Certification Laboratory, certify that the statements made in this engineering report are true, complete, and correct to the best of my knowledge, and are made in good faith. COMMUNICATION CERTIFICATION LABORATORY Tested by: Jeffrey L. Draney EMC Technician COMMUNICATION CERTIFICATION LABORATORY TEST REPORT: 73-7844 FCC ID: O9C-SL1020B Page 2 of 60 TABLE OF CONTENTS PAGE SECTION 1. CLIENT INFORMATION AND MANUFACTURER:............3 SECTION 2. EQUIPMENT UNDER TEST (EUT)......................4 SECTION 3. TEST SPECIFICATION, METHODS & PROCEDURES........7 SECTION 4. OPERATION OF EUT DURING TESTING................13 SECTION 5. SUMMARY OF TEST RESULTS:.......................14 SECTION 6. MEASUREMENTS, EXAMINATIONS AND DERIVED RESULTS:...............................................15 APPENDIX 1 TEST PROCEDURES AND TEST EQUIPMENT..............47 APPENDIX 2 Photographs.....................................55 COMMUNICATION CERTIFICATION LABORATORY TEST REPORT: 73-7844 FCC ID: O9C-SL1020B Page 3 of 60 SECTION 1. CLIENT INFORMATION AND MANUFACTURER: 1.1 Client Information: Company Name: 3Com Corporation 3930 West Parkway Blvd. West Valley City, UT 84120 Contact Name: Greg Hansen Title: Regulatory Engineer 1.2 Manufacturer: Company Name: 3Com Corporation 3930 West Parkway Blvd. West Valley City, UT 84120 Contact Name: Greg Hansen Title: Regulatory Engineer COMMUNICATION CERTIFICATION LABORATORY TEST REPORT: 73-7844 FCC ID: O9C-SL1020B Page 4 of 60 SECTION 2. EQUIPMENT UNDER TEST (EUT) 2.1 Identification of EUT: Trade Name: 3Com Corporation Model Name or Number: SL-1020B Serial Number: N/A Options Fitted: None Country of Manufacture: U.S.A. 2.2 Description of EUT: The SL-1020B is a wireless FHSS transceiver which connects via an USB interface to a pc or laptop computer. This provides the user data and voice exchange capabilities with other standard protocol enabled devices. The SL-1020B enables wireless communications with Palms, Palm-PC's, Mobile Phones, LAN Access Points, PSTN Access Points, Cordless Headsets, and other Standard protocol -enabled PC's. The SL-1020B transmitter was connected to the PC through a direct connect USB adapter. This report covers the transmitter only. The receiver and class B computer peripheral are covered under a separate declaration of conformity report. 2.3 Modification Incorporated/Special Accessories on EUT: There were no modifications or special accessories required to comply with the specification. 2.4 EUT and Support Equipment: The FCC ID numbers for all the EUT and support equipment used during the test (including inserted cards) are listed below: COMMUNICATION CERTIFICATION LABORATORY TEST REPORT: 73-7844 FCC ID: O9C-SL1020B Page 5 of 60 Brand Name Model Number FCC ID Number Description Name of Interface Ports / Interface Cables BN: 3Com (1) MN: SL-1020B O9C- SL1020B USB wireless transceiver See Section 2.5. BN: Dell MN: Inspiron 4000 SN: TW-07914H-12800- 11B-0882 DoC Laptop Computer USB / USB to Mini USB Note: (1) EUT. (2) Interface port connected to EUT (See Section 2.5) (3) Mouse cable permanently attached. The support equipment listed above was not modified in order to achieve compliance with this standard. 2.5 Interface Ports on EUT: Name of Ports No. of Ports Fitted to EUT. Cable Descriptions/Length USB 1 Direct connect Antenna 1 N/A COMMUNICATION CERTIFICATION LABORATORY TEST REPORT: 73-7844 FCC ID: O9C-SL1020B Page 6 of 60 2.6 List of Channels: Channel Number Channel Frequency (MHz) Channel Number Channel Frequency (MHz) 1 2402.0 41 2442.0 2 2403.0 42 2443.0 3 2404.0 43 2444.0 4 2405.0 44 2445.0 5 2406.0 45 2446.0 6 2407.0 46 2447.0 7 2408.0 47 2448.0 8 2409.0 48 2449.0 9 2410.0 49 2450.0 10 2411.0 50 2451.0 11 2412.0 51 2452.0 12 2413.0 52 2453.0 13 2414.0 53 2454.0 14 2415.0 54 2455.0 15 2416.0 55 2456.0 16 2417.0 56 2457.0 17 2418.0 57 2458.0 18 2419.0 58 2459.0 19 2420.0 59 2460.0 20 2421.0 60 2461.0 21 2422.0 61 2462.0 22 2423.0 62 2463.0 23 2424.0 63 2464.0 24 2425.0 64 2465.0 25 2426.0 65 2466.0 26 2427.0 66 2467.0 27 2428.0 67 2468.0 28 2429.0 68 2469.0 29 2430.0 69 2470.0 30 2431.0 70 2471.0 31 2432.0 71 2472.0 32 2433.0 72 2473.0 33 2434.0 73 2474.0 34 2435.0 74 2475.0 35 2436.0 75 2476.0 36 2437.0 76 2477.0 37 2438.0 77 2478.0 38 2439.0 78 2479.0 39 2440.0 79 2480.0 40 2441.0 COMMUNICATION CERTIFICATION LABORATORY TEST REPORT: 73-7844 FCC ID: O9C-SL1020B Page 7 of 60 SECTION 3. TEST SPECIFICATION, METHODS & PROCEDURES 3.1 Test Specification: Title: FCC PART 15.247, Subpart C (47 CFR 15). Limits and methods of measurement of radio interference characteristics of radio frequency devices. Operation within the bands 902-928 MHz, 2400-2483.5 MHz and 5725-5850 MHz. Purpose of Test: The tests were performed to demonstrate Initial compliance. 3.2 Methods & Procedures: 3.2.1 § 15.247 (a) Operation under the provisions of this Section is limited to frequency…

Text truncated - open the document above for the full version.

Front View of Radiated Test Setup Back View Of Radiated Test Setup