Report of Measurements

FCC ID: LDK102039

Test Report

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FCCID_91521

AHD EMC Laboratory 92723 M-152, Dowagiac, MI 49047 USA Phone: (616) 424-7014 www.ahde.com EXHIBIT K: REPORT OF M EASUREMENTS [2.1033(B6)] Test Report for FCC ID: LDK102039 FCC Part 2.1043, Part 15 Subpart C(15.247) Report #20000282F Issued 03/10/00 MODEL MI-4800B Prepared for: Mr. Dave Case, NCE Aironet Wireless Communications, Inc. 3875 Embassy Parkway Akron, OH 44333 Test Date(s): January 30 - February 2, 2000 On the basis of the measurements made, the equipment tested is capable of operation in compliance with the requirements of Part 15 of the FCC Rules under normal use and maintenance. data recorded by witnessed by Ted Chaffee, NCE Dave Case, NCE EMC Engineer This report prepared by: AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 1 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Table of Contents EXHIBIT K: Report of Measurements [2.1033(b6)]....................................................................... 1 Table of Contents ..................................................................................................................... 2 Statements Concerning this Report.......................................................................................... 3 Manufacturer/Applicant [2.1033(b1)]........................................................................................ 4 Measurement/Test Site Facility & Equipment........................................................................... 4 Test Site [2.948, 2.1033(b6)].......................................................................................... 4 Measurement Equipment Used [2.947(d), 15.31(b)]......................................................... 4 Tested Configuration /Setup: [2.1033(b8)] ............................................................................... 5 Support Equipment & Cabling ........................................................................................... 5 Setup Diagram................................................................................................................... 6 Summary of Results: ................................................................................................................ 7 2.2dBi Dipole Antenna....................................................................................................... 7 -1dBi Fujitsu Patch Antenna............................................................................................... 7 Changes made to achieve compliance.............................................................................. 8 Standards Applied to Test: [2.1033(b6)]................................................................................... 8 Test Methodology: [2.947(a), 2.1033(b6)]................................................................................ 8 Test Data [2.1033(b6)]............................................................................................................ 10 Spectral Power Density [15.247(d)]................................................................................. 10 Minimum 6dB bandwidth [15.247(a2)] ............................................................................. 12 Restricted Bands: [15.205] .............................................................................................. 13 Transmitter Maximum Peak Output Power: 15.247(b)(1), (b)(3)(i) .................................. 14 Emissions at Band Edges [15.205(a), 15.209, 15.247(c)].............................................. 15 Transmitter Harmonic Emissions [15.205(a), 15.209(a),(f)] ........................................... 26 Spurious Field Strength Measurements: [15.33(b), 15.109(a), 15.209(a)]...................... 28 AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 2 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Statements Concerning this Report Test Traceability: The calibration of all measuring and test equipment and the measured data using this equipment are traceable to the National Institute for Standards and Technology (NIST). Limitations on results: The test results contained in this report relate only to the Item(s) tested. Any electrical or mechanical modification made to the test item subsequent to the test date shall invalidate the data presented in this report. Any electrical or mechanical modification made to the test item subsequent to this test date shall require an evaluation to verify continued compliance. Limitations on copying: This report shall not be reproduced, except in full, without the written approval of AHD. Limitations of the report: This report shall not be used to claim product endorsement by NVLAP, FCC, or any agency of the US Government. Statement of Test Results Uncertainty: Following the guidelines of NAMAS publication NIS81 and NIST Technical Note 1297, the Measurement Uncertainty at a 95% confidence level is determined to be: ±3.6 dB AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 3 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Manufacturer/Applicant [2.1033(b1)] The manufacturer and applicant: AIRONET WIRELESS COMMUNICATIONS, INC. 3875 Embassy Parkway Akron, OH 44333 Measurement/Test Site Facility & Equipment Test Site [2.948, 2.1033(b6)] The AHD test facility is centered on 9 acres of rural property near Sister Lakes, Michigan. The mailing address is 92723 M-152, Dowagiac, Michigan 49047. This test facility is NVLAP accredited (LabCode 200129-0). It has been fully described in a report filed with the FCC and Industry Canada. The report filed with the FCC is, dated November 5, 1996, was accepted by the FCC in a letter dated January 15, 1997, (31040/SIT 1300F2). The report filed with Industry Canada, dated August 11, 1998, was accepted via a letter dated September 1, 1998, (file:IC3161). Measurement Equipment Used [2.947(d), 15.31(b)] Equipment Model S/N Last Cal Calibration Date Interval HP EMI Receiver system HP 8546A RF Filter Section HP-85460A 3448A00283 22-Jun-99 12 month RF Receiver Section HP-85462A 3625A00342 22-Jun-99 12 month EMCO BiconiLog Antenna 3142 1077 07-Sep-99 12 months Solar LISN 8012-50-R-24-BNC 962138 07-Sep-99 12 months (LCI) Double shielded 50ohm Coax RG58/U 920809 26-Mar-99 12 months (3-M) Type 129FF Ultra Flex LowLoss RG58/U 9910-12 29-Oct-99 6 months (10-M) Amelco 50ohm Coax RG213/U 9903-10ab 26-Oct-99 6 months from Aironet Wireless Communications, Inc. HP Spectrum Analyzer 8593EM 3536A00115 13-Sep-98 12 months HP 1-26GHz RF PreAmplifier 8449B 3008A00911 09-Sep-98 12 months ElectroMechanics Double Ridge Horn 3115 4363 10-Dec-97 12 months 3.5meter RG-442 50ohm coax RG-442 blue 01-Feb 00 12 months Measurement Environment The tests were performed with the equipment under test, and measurement equipment inside the all-weather enclosure. Ambient temperature was 22deg.C., the relative humidity 40%. AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 4 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Tested Configuration /Setup: [2.1033(b8)] Support Equipment & Cabling Setup Description Model Serial No. / Part No. EMC Consideration Diagram Legend A Host Computer [Celeron] AOPENAX6BC -- Tower 366MHz 366MHz B Monitor [ZDS] 1190062ROD FCC ID: ATO90CZCM1492 ZCM-1492-1 C Keyboard [Gateway] 51182835 FCC ID: D7J2196003-xx 2196003 D Mouse [Microsoft] 1.1APS/2 FCC ID: C3KKMPS Intellimouse E Radio Module [Aironet] Assembly #410- Foil shielded for the EUT testing. Fixture Engineering 004599 F [EUT] [Aironet] 510-884741 Rev.AA FCC ID: LDK102039 mounted in Aironet MI-4800B Radio Module Test Fixture Device Description Length EMC Consideration 1 monitor line cord US plug to IEC 1.5 meters Unshielded 2 Computer line cord US plug to IEC 1.5 meters Unshielded 3 Keyboard I/O cable Captive to keyboard to 2 meters Foil shield. PS2 connector 4 PS2 Mouse cable Captive to mouse to 2 meters Foil shield. PS2 connector 5 Video I/O cable Captive to monitor to 1.5 meters Coax shield. One ferrite core molded 15p male ‘D’ into jacket. Bundled during testing 6 ISA Ribbon cable -- 2 meters Bundled during testing. Foil shielded for the EUT testing. AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 5 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Setup Diagram Note: Setup photographs are located in Attached Electronic File, Exhibit L. BASIC EUT SETUP (Legend designation is on previous page) AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 6 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Summary of Results: 1. This test series evaluated the Equipment Under Test, MI-4800B, to FCC Part 15, SubPart C. 2. The system tested is compliant to the requirement of CFR 47, FCC Part 15, SubPart C for Spread Spectrum, 2.4GHz, Intentional Radiators. 3. The equipment under test was received on January 27, 2000 and this test series commenced on January 30, 2000. 4. The EUT is for portable operation only. It does not utilize the 120vac power mains. Therefore, no line conducted emission tests were performed on the unit. 5. The spectral density measurement with highest peak reading occurred with the transmitter tuned to 2.442GHz and a 2MBit data rate. It was recorded to be 17.5dB below the 15.247(d) limit of 8dBm. 6. The minimum 6dB bandwidth recorded occurred while measuring with the transmitter tuned to 2.442GHz. It was recorded as 10.5MHz. The minimum limit is 500KHz. 7. The transmitter maximum power was measured at 2.412GHGz, 2.442GHz, and 2.462GHz. The highest level occurred at 2.462GHZ and measured to be 17.8dBm which is 12.2dB below the limit of 30dBm. 2.2dBi Dipole Antenna 8. The radiated emission level nearest the limit, when measuring at the band edges only, occurred at 2.390GHz with the EUT in 11Mbut/Sec operation, vertically polarized. This signal was measured to be 471uV/m which is 0.5dB below the 500uV/m limit. 9. When measuring the transmitter harmonic emissions, the radiated emission level nearest the limit, and above the instrument floor noise, occurred at 4.924Ghz. The signal was measured to be 260.0uV/m which is 5.7dB below the 500uV/m limit. 10. The radiated level of spurious emissions nearest the limit, with the EUT in ‘Receive Mode’, occurred at 456MHz, horizontally polarized. This signal was measured to be 159uV/m which is 2.0dB below the 200uV/m limit. 11. The spurious emissions of the Local Oscillator, when in the receive mode, were below the noise floor of the measurement instrumentation. Three LO frequencies, 1) 2.037GHz, 2) 2.067GHz, and 2.087GHz which tune in 2.412GHz, 2.442GHz, and 2.462GHz respectively were searched and no detectable emissions were observed. -1dBi Fujitsu Patch Antenna 12. The radiated emission level nearest the limit, when measuring at the band edges only, occurred at 2.390GHz with the EUT in 11Mbut/Sec operation, vertically polarized. This signal was measured to be 207uV/m which is 7.6dB below the 500uV/m limit. 13. When measuring the transmitter harmonic emissions, the radiated emission level nearest the limit, and above the instrument floor noise, occurred at 4.824Ghz. The signal was measured to be 312.6uV/m which is 4.1dB below the 500uV/m limit. AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 7 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Changes made to achieve compliance 1. NONE Standards Applied to Test: [2.1033(b6)] ANSI C63.4 - 1992, Appendix I CFR47 FCC Part 2, Part 15, SubPart C, 15.247 Test Methodology: [2.947(a), 2.1033(b6)] For the testing, the placement of the EUT and the support equipment was selected to represent a configuration which would operate the equipment within the setup constraints of ANSI C63.4. Because the unit is only for portable operation and does not utilize the power mains, there was no line conducted testing performed. The radiated testing, performed at a 3 meter open field test site, was completed according to the procedures outlined in the standards. The cables of the EUT were manipulated to produced the highest signal level relative to the limit. The pictures, in this submittal, show the position of the equipment and cabling that produced the maximum signal level. For radiated evaluations the ‘in-house’ radio module test fixture and associated ribbon cable were isolated by applying aluminum foil around the test fixture and ribbon cable. The aluminum foil was bonded to the rear of the host tower computer. The EUT was positioned on standoffs outside the area of the aluminum shield. This arrangement allowed the EUT emitted signals to be measured at their maximum while suppressing emissions from the engineering prototype test fixture. Signal and power connections were made via a tall header of pins which mated with the connector of the EUT. The EUT was exercised using a program which allowed the tester to turn the transmitter on and set the bit rate of modulation. During the measurements of the transmitter, the EUT was continuously transmitting. Tests at different bit rates of 1Mbit, 2Mbit, 5.5Mbit, and 11Mbit were made to assure that the highest possible RF profile was being captured. AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 8 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Radiated The system was placed upon a 1 x 1.5 meter non-metallic table 80cm from the open field site ground plane in the prescribed setup per ANSI C63.4, Figure 9(c). The table sits upon a remote controlled turntable. The receiving antenna, located at the appropriate standards distance of 3 or 10 meters from the table center, is also remote controlled. Preliminary tests were done at the 3 meter open field test site. The final tests are done at the appropriate standards distance of 3 or 10 meters. The "Biconical/Log Periodic" broadband antenna connected to an EMI Receiver, meeting CISPR 16, is used throughout the testing. The turntable was rotated 360 degrees and the receiving antenna height varied from 1 to 4 meters to search out the highest emissions. Both Vertical and Horizontal RF profiles were evaluated. The principal settings of the EMI Receiver for radiated testing include: Bandwidth: 120KHz for frequencies less than 1Ghz. 1MHz for frequencies greater than 1GHz. Detector Function: scanning and signal search = Peak Mode measurements = Quasi Peak Mode for frequencies less than 1Ghz. Average mode for frequencies greater than 1GHz. The cable loss of the coax used in radiated scanning is charted in this report. The resultant Field Strength (FS) is a summation in decibels (dB) of the Indicated Receiver Level (RF), the Antenna Correction Factor (AF), and the Cable Loss Factor (CF). If a PreAmplifier (PA) is used, its gain (dB) is subtracted from the above sum. Formula 1: FS(dBuV/m) = RF(dBuV) + AF(dB/m) +CF(dB) - PA(dB) To convert the Field Strength dBuV/m term to uV/m, the dBuV/m is first divided by 20. The Base 10 AntiLog is taken of this quotient. The result is the Field Strength value in uV/m terms. Formula 2: FS(uV/m) = AntiLog[(FS(dBuV/m))/20] AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 9 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Test Data [2.1033(b6)] Spectral Power Density [15.247(d)] MEASUREMENT PROCEDURE: 1. The EUT was setup to operate with a 2Mbit data rate and an 11MBit data rate. 2. The EMC Receiver was connected directly to the transmitter output. 3. The EMC Receiver was setup using IF BW = 3KHz, Avg BW = 10KHz, and span = 15MHz. 4. A representative transmission centered at 2.442GHz was set to continually transmit to observe the spectral density. 5. A span from 2434.5MHz to 2449.5MHz was observed. 6. The next page shows the chart of the observed RF profiles. Mode Tuned Measurement Cable Total Level 15.247(d) Frequency Factor Limit MHz dBm dB dBm dBm 11MBit 2442 -18.8 peak 1.2 -17.6 8 2 MBit 2442 -10.7 peak 1.2 -9.5 8 AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 10 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Spectral Density in 11Mbit operation Spectral density in 2Mbit operation AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 11 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Minimum 6dB bandwidth [15.247(a2)] MEASUREMENT PROCEDURE: 1. The EUT was setup to operate with an 11MBit data rate. 2. The EUT was measured while transmitting continuously at 2.412GHz (low), 2.442GHz (mid), and 2.462GHz (high) frequencies. 3. The EMC Receiver was connected directly to the transmitter output. 4. The EMC Receiver was setup using IF BW = 1MHz, Avg BW = 1MHz, and span = 50MHz. 5. The receiver display is recorded. A typical display is shown below. Tuned Measured 15.247(a2) Frequency Bandwidth Minimum at 6dB points MHz MHz KHz 2412 10.6 500 2442 10.5 500 2462 10.6 500 Chart of 6dB bandwidth measurement at 2.462GHz. AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 12 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Restricted Bands: [15.205] The following frequency bands are restricted. Only spurious emissions are permitted at levels limited by 15.209: MHz MHz MHz GHz 0.090-0.110 16.42-16.423 399.9-410 4.5-5.25 0.490-0.510 16.69475-16.69525 608-614 5.35-5.46 2.1735-2.1905 16.80425-16.80475 960-1240 7.25-7.75 4.125-4.128 25.5-25.67 1300-1427 8.025-8.5 4.17725-4.17775 37.5-38.25 1435-1626.5 9.0-9.2 4.20725-4.20775 73-74.6 1645.5-1646.5 9.3-9.5 6.215-6.218 74.8-75.2 1660-1710 10.6-12.7 6.26775-6.26825 108-121.94 1718.8-1722.2 13.25-13.4 6.31175-6.31225 123-138 2200-2300 14.47-14.5 8.291-8.294 149.9-150.05 2310-2390 15.35-16.2 8.362-8.366 156.52475-156.52525 2483.5-2500 17.7-21.4 8.37625-8.38675 156.7-156.9 2655-2900 22.01-23.12 8.41425-8.41475 162.0125-167.17 3260-3267 23.6-24.0 12.29-12.293 167.72-173.2 3332-3339 31.2-31.8 12.51975-12.52025 240-285 3345.8-3358 36.43-36.5 12.57675-12.57725 322-335.4 3600-4400 Above 38.6 13.36-13.41 AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 13 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Transmitter Maximum Peak Output Power: 15.247(b)(1), (b)(3)(i) MEASUREMENT PROCEDURE: 1. The EUT was setup to operate in for an 11MBit data rate which represents worst case interference potential. 2. The EMC Receiver was connected directly to the transmitter output. 3. The EMC Receiver was setup using IF BW = 3MHz, Avg BW = 3MHz. Justification: The gain of the antennas designed for this unit is less than 6dBi. Hence there is no derating the transmitter output power. The Maximum Peak Output Power is limited to 1Watt. Calculation: 1Watt = 1000mW. Converting to dBm: 10*LOG(1000mW) = 30dBm Tuned Measurement Cable Total Field 15.247(b)(3)(i) Frequency Factor Strength Limit MHz dBm dB dBm dBm 2412 15.97 1.17 17.14 30 2442 14.54 1.18 15.72 30 2462 16.63 1.19 17.82 30 AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 14 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Emissions at Band Edges [15.205(a), 15.209, 15.247(c)] MEASUREMENT PROCEDURE: 1. The EUT was adjusted to operate at 2412MHz to evaluate the lower band edge 2. The EUT was adjusted to operate at 2462MHz to evaluate the upper band edge Charted Field Strength at Band Edges. [Field Strength charts begin at page 27.] 3. The field strength displayed on the EMI receiver were recorded for both the high side and low side of band edges. Differing data rates from 1MBit/Sec to 11MBit/Sec were recorded. 4. The EMI Receiver settings for charting the field strength display are: a) Evaluating PEAK: IF Bandwidth = 1MHz, Avg Bandwidth = 1MHz, and b) Evaluating AVERAGE: IF Bandwidth = 1MHz, Avg Bandwidth = 10Hz. Measurement of Radiated Emissions. [Tabulated data is on pages 25, 26.] 5. The EUT system was set upon the wooden turntable 80cm above the ground plane at a distance of 3 meters from the receiving antenna. 6. The transmitted emission level was maximized by rotating the turntable and raising and lowering the search antenna. 7. Data was recorded with the EUT at 1MBit/Sec (lowest data rate) and at 11MBit/Sec (highest data rate). The EMI Receiver settings at IF Bandwidth=1MHz, Avg Bandwidth=10Hz. 8. Both Horizontal and Vertical polarization modes were evaluated. 9. The Field Strength E(uV/m) is calculated using the formula: E(uV/m) = LOG10-1((dBuV/m + Ant.Factor(dB) + Coax Loss(dB). AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 15 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 1MBit/Sec operation using Dipole Antenna Tabulated Measurements for the lower band edge. Frequency Measurement Polarity Cable + Total Field Total Field FCC Antenna Strength Strength Avg dBuV/m Factor dBuV/m uV/m Limit GHz Peak Average dB+dB/m Peak Average Average uV/m 2.380 19.0 9.6 V 33.3 52.3 42.8 138.5 500 2.382 22.1 15.6 V 33.3 55.3 48.8 276.1 500 2.384 24.5 17.0 V 33.3 57.8 50.2 325.1 500 2.386 26.4 18.5 V 33.3 59.6 51.8 389.0 500 2.388 23.2 16.7 V 33.3 56.5 49.9 314.1 500 2.390 25.3 19.5 V 33.3 58.6 52.8 436.5 500 2.380 10.6 -0.7 H 33.3 43.9 32.5 42.3 500 2.382 10.2 -0.6 H 33.3 43.4 32.6 42.9 500 2.384 10.7 -0.3 H 33.3 44.0 32.9 44.3 500 2.386 12.9 4.3 H 33.3 46.2 37.6 75.9 500 2.388 12.2 1.6 H 33.3 45.5 34.9 55.5 500 2.390 12.8 4.1 H 33.3 46.1 37.4 73.8 500 1MBit/Sec operation using Dipole Antenna Tabulated Measurements for the upper band edge. Frequency Measurement Polarity Cable + Total Field Total Field FCC Antenna Strength Strength Avg dBuV/m Factor dBuV/m uV/m Limit GHz Peak Average dB+dB/m Peak Average Average uV/m 2.4835 13.9 3.3 V 33.4 47.3 36.7 68.2 500 2.485 13.0 -0.2 V 33.4 46.5 33.2 45.7 500 2.488 10.6 -2.0 V 33.4 44.0 31.5 37.4 500 2.491 10.5 -1.7 V 33.4 43.9 31.7 38.6 500 2.494 10.5 -2.2 V 33.4 44.0 31.3 36.6 500 2.497 10.2 -2.4 V 33.4 43.6 31.1 35.8 500 2.500 10.4 -2.3 V 33.4 43.9 31.1 36.0 500 2.4835 21.2 14.0 H 33.4 54.6 47.4 235.5 500 2.485 18.6 10.2 H 33.4 52.0 43.7 152.2 500 2.488 18.5 10.8 H 33.4 51.9 44.2 162.7 500 2.491 18.1 8.8 H 33.4 51.5 42.3 129.6 500 2.494 14.2 3.4 H 33.4 47.7 36.8 69.4 500 2.497 13.9 2.9 H 33.4 47.3 36.3 65.4 500 2.500 14.3 2.9 H 33.4 47.7 36.3 65.5 500 AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 16 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 11MBit/Sec operation using Dipole Antenna Tabulated Measurements for the lower band edge. Frequency Measurement Polarity Cable + Total Field Total Field FCC Antenna Strength Strength Avg dBuV/m Factor dBuV/m uV/m Limit GHz Peak Average dB+dB/m Peak Average Average uV/m 2.380 24.3 7.4 V 33.3 57.6 40.7 108.4 500 2.382 22.2 12.1 V 33.3 55.4 45.4 186.4 500 2.384 26.2 16.5 V 33.3 59.5 49.8 307.6 500 2.386 27.3 18.4 V 33.3 60.6 51.7 383.7 500 2.388 27.3 18.6 V 33.3 60.6 51.9 393.1 500 2.390 29.8 20.2 V 33.3 63.1 53.5 471.0 500 2.380 9.0 -2.3 H 33.3 42.2 31.0 35.4 500 2.382 9.2 -1.9 H 33.3 42.5 31.4 37.0 500 2.384 10.6 -0.8 H 33.3 43.8 32.5 42.2 500 2.386 11.8 1.0 H 33.3 45.1 34.2 51.5 500 2.388 18.2 1.4 H 33.3 51.5 34.7 54.0 500 2.390 20.2 3.3 H 33.3 53.5 36.6 67.4 500 11MBit/Sec operation using Dipole Antenna Tabulated Measurements for the upper band edge. Frequency Measurement Polarity Cable + Total Field Total Field FCC Antenna Strength Strength Avg dBuV/m Factor dBuV/m uV/m Limit GHz Peak Average dB+dB/m Peak Average Average uV/m 2.4835 23.8 14.0 V 33.4 57.2 47.4 233.6 500 2.485 19.7 10.3 V 33.4 53.1 43.7 153.8 500 2.488 20.2 9.5 V 33.4 53.6 42.9 139.5 500 2.491 18.1 7.0 V 33.4 51.5 40.4 104.8 500 2.494 13.9 3.3 V 33.4 47.3 36.7 68.5 500 2.497 17.6 10.8 V 33.4 51.0 44.2 162.4 500 2.500 13.3 1.9 V 33.4 46.8 35.3 58.5 500 2.4835 12.1 0.6 H 33.4 45.5 34.0 50.1 500 2.485 9.4 -1.7 H 33.4 42.8 31.8 38.7 500 2.488 9.1 -2.4 H 33.4 42.5 31.0 35.5 500 2.491 9.1 -1.9 H 33.4 42.5 31.5 37.7 500 2.494 9.4 -2.6 H 33.4 42.8 30.9 34.9 500 2.497 10.3 1.5 H 33.4 43.8 35.0 56.0 500 2.500 8.3 -2.6 H 33.4 41.8 30.8 34.8 500 AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 17 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 11MBit/Sec operation using Fujitsu Patch Antenna Tabulated Measurements for the lower band edge. Frequency Measurement Polarity Cable + Total Field Total Field FCC Antenna Strength Strength Avg dBuV/m Factor dBuV/m uV/m Limit GHz Peak Average dB+dB/m Peak Average Average uV/m 2.380 10.9 -1.2 V 33.3 44.2 32.1 40.3 500 2.382 14.3 3.4 V 33.3 47.6 36.6 67.9 500 2.384 18.3 9.0 V 33.3 51.6 42.3 130.0 500 2.386 20.8 11.9 V 33.3 54.1 45.2 182.0 500 2.388 20.8 12.9 V 33.3 54.1 46.2 203.7 500 2.390 21.0 13.0 V 33.3 54.3 46.3 206.8 500 2.380 10.7 -0.7 H 33.3 44.0 32.6 42.7 500 2.382 14.3 4.0 H 33.3 47.6 37.3 72.9 500 2.384 18.2 8.7 H 33.3 51.5 42.0 125.7 500 2.386 20.7 11.4 H 33.3 54.0 44.7 172.0 500 2.388 20.7 12.3 H 33.3 54.0 45.6 190.1 500 2.390 20.9 12.8 H 33.3 54.2 46.1 201.6 500 11MBit/Sec operation using Fujitsu Patch Antenna Tabulated Measurements for the upper band edge. Frequency Measurement Polarity Cable + Total Field Total Field FCC Antenna Strength Strength Avg dBuV/m Factor dBuV/m uV/m Limit GHz Peak Average dB+dB/m Peak Average Average uV/m 2.4835 16.8 6.7 V 33.4 50.2 40.1 100.8 500 2.485 13.5 4.1 V 33.4 46.9 37.5 75.2 500 2.488 13.8 3.1 V 33.4 47.3 36.6 67.3 500 2.491 11.3 0.5 V 33.4 44.8 33.9 49.4 500 2.494 9.1 -1.6 V 33.4 42.6 31.8 38.9 500 2.497 12.2 3.1 V 33.4 45.6 36.5 66.8 500 2.500 8.8 -2.0 V 33.4 42.2 31.4 37.2 500 2.4835 13.6 3.4 H 33.4 47.0 36.8 69.4 500 2.485 11.3 1.0 H 33.4 44.7 34.5 52.8 500 2.488 11.5 0.4 H 33.4 44.9 33.8 49.0 500 2.491 9.5 -1.5 H 33.4 42.9 31.9 39.5 500 2.494 9.2 -2.7 H 33.4 42.7 30.7 34.4 500 2.497 10.5 0.8 H 33.4 43.9 34.3 51.8 500 2.500 8.0 -2.6 H 33.4 41.5 30.9 35.0 500 AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 18 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 The following pages show, in chart format, the emission profiles of the band edges with the system operating at 2MBit/Sec, and 11 MBit/Sec using the Aironet standard dipole antenna. Similar charts of the 1Bmit/Sec and 5.5Mbit/Sec are available for viewing. These charts were not included here to decrease the memory size of this report. Also, in these pages are the emission profile charts of the band edges with system operating at 11Mbit/Sec using the Fujitsu -1dBi patch antenna. In any 100KHz bandwidth outside the frequency band of operation, the RF power is at least 20dB below that in the highest 100KHz bandwidth within the band of operation. The charts on the pages that follow indicate this compliance by displaying a marker at the band edge greater than 20dB below the reference peak reading of the in band RF level. DIPOLE ANTENNA Band Edge: LOW END; Data Rate = 2MBit/Sec page 20 Data Rate = 11MBit/Sec page 21 HIGH END; Data Rate = 2MBit/Sec page 22 Data Rate = 11MBit/Sec page 23 -1dBi PATCH ANTENNA Band Edge: LOW END; Data Rate = 11MBit/Sec page 24 HIGH END; Data Rate = 11MBit/Sec page 25 AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 19 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Peak Evaluation: Dipole Antenna Low Band edge, Marker at 2.39GHz Data Rate = 2MBit/Sec Average Evaluation: Dipole Antenna Low Band edge, Marker at 2.39GHz Data Rate = 2MBit/Sec AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 20 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Peak Evaluation: Dipole Antenna Low Band edge, Marker at 2.39GHz Data Rate = 11MBit/Sec Average Evaluation: Dipole Antenna Low Band edge, Marker at 2.39GHz Data Rate = 11MBit/Sec AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 21 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Peak Evaluation: Dipole Antenna High Band edge, Marker at 2.4835GHz Data Rate = 2MBit/Sec Average Evaluation: Dipole Antenna High Band edge, Marker at 2.4835GHz Data Rate = 2MBit/Sec AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 22 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Peak Evaluation: Dipole Antenna High Band edge, Marker at 2.4835GHz Data Rate = 11MBit/Sec Average Evaluation: Dipole Antenna High Band edge, Marker at 2.4835GHz Data Rate = 11MBit/Sec AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 23 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Peak Evaluation: Fujitsu -1dBi Patch Antenna Low Band edge, Marker at 2.39GHz Data Rate = 11MBit/Sec Average Evaluation: Fujitsu -1dBi Patch Antenna Low Band edge, Marker at 2.39GHz Data Rate = 11MBit/Sec AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 24 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Peak Evaluation: Fujitsu -1dBi Patch Antenna High Band edge, Marker at 2.4835GHz Data Rate = 11MBit/Sec Average Evaluation: Fujitsu -1dBi Patch Antenna High Band edge, Marker at 2.4835GHz Data Rate = 11MBit/Sec AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 25 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Transmitter Harmonic Emissions [15.205(a), 15.209(a),(f)] MEASUREMENT PROCEDURE: 1. The EUT was adjusted to operate at its low, mid, and high range. These frequencies are, respectively, 2412MHz, 2442MHz, and 2462MHz. 2. The EUT system was set upon the wooden turntable 80cm above the ground plane at a distance of 3 meters from the receiving antenna. 3. The EUT was setup to operate in for an 11MBit data rate which represents worst case interference potential. 4. The EMC Receiver was setup using IF BW = 1MHz, Avg BW = 300KHz. 5. The transmit harmonic emission level was maximized by rotating the turntable and raising and lowering the search antenna. 6. Both Horizontal and Vertical polarization modes were evaluated. 7. The Field Strength E(uV/m) is calculated using the formula: E(uV/m) = LOG10-1(dBuV/m)/20) 8. The indicated levels of the HP8593EM Spectrum Analyzer include already the Antenna factors and a 30dB factor for the PreAmp. The total field strength has been adjusted to include the attenuation factor of the coax and the difference in true PreAmp gain from 30dB at the specific frequencies of interest. 2.2dBi Dipole Antenna Tuned Measured Pol Indicated Coax - Total Field Total Field FCC Antenna factor Frequency Frequency Level PreAmp Strength Strength Limit and 30dB (dBuV/m) Factor not (dBuV/m) (uV/m) preamp factor included in in S.A. memory S.A. memory GHz GHz Peak Avg dB Peak Avg Peak Avg uV/m dB 2.412 4.824 V 50.3 42.6 3.3 53.6 45.9 478.6 197.2 500 -1.2 7.236 V 48.9 44.6 3.2 52.1 47.8 402.7 245.5 500 4.2 **9.642 V 49 47 4.1 <53.1 <51.1 451.8 358.9 500 9.0 **12.05 V 49.3 47 5.5 <54.8 <52.5 549.5 421.7 500 11.6 2.442 4.884 V 48.8 44.1 3.4 52.2 47.5 407.4 237.1 500 -1.0 7.326 V 48.6 42.3 3.2 50.9 45.5 350.8 188.4 500 4.6 **9.768 V 49.9 47.1 4.2 <54.1 <51.3 507.0 367.3 500 9.1 **12.210 V 50 47 5.6 <55.6 <52.6 602.6 426.6 500 11.7 2.462 4.924 V 51.2 44.9 3.4 54.6 48.3 537.0 260.0 500 -1.0 7.386 V 49.0 43.1 3.2 52.2 46.3 407.4 206.5 500 4.8 **9.848 V 49.5 47 4.2 <53.7 <51.2 484.2 363.1 500 9.1 **12.310 V 50 47 5.6 <55.6 <51.6 602.6 380.2 500 11.7 * NOTE: This signal is at the system floor noise level. ** NOTE: At frequencies above 9.7GHz no EUT emissions were observed. All emissions at these frequencies are less than the floor noise of the measurement system. Only the floor noise of the measurement system was observed and recorded at the frequencies above 9.7GHz. AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 26 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 -1dBi Fujitsu Patch Antenna Tuned Measured Pol Indicated Coax - Total Field Total Field FCC Antenna factor Frequency Frequency Level PreAmp Strength Strength Limit and 30dB (dBuV/m) Factor not (dBuV/m) (uV/m) preamp factor included in in S.A. S.A. memory memory GHz GHz Peak Avg dB Peak Avg Peak Avg uV/m dB 2.412 4.824 V 49.3 46.6 3.3 52.6 49.9 426.6 312.6 500 -1.2 7.236 V 48.1 45.3 3.2 51.3 48.5 367.3 266.1 500 4.2 **9.642 V 49 47 4.1 <53.1 <51.1 451.8 358.9 500 9.0 **12.05 V 49.2 47 5.5 <54.7 <52.5 543.2 421.7 500 11.6 2.442 4.884 V 47.2 38.5 3.4 50.6 41.9 338.8 124.4 500 -1.0 7.326 V 47.1 43.1 3.2 50.3 46.3 327.3 206.5 500 4.6 **9.768 V 46.5 45.0 4.2 <50.7 <49.2 342.8 288.4 500 9.1 **12.210 V 51.0 47 5.6 <56.6 <52.6 676.1 426.6 500 11.7 2.462 4.924 V 48.2 42.3 3.4 51.6 45.7 380.2 192.8 500 -1.0 7.386 V 48.6 44.8 3.2 51.8 48.0 389.0 251.2 500 4.8 **9.848 V 49.6 47 4.2 <53.8 <51.2 489.8 363.1 500 9.1 **12.310 V 50 47 5.6 <55.6 <52.6 602.6 426.6 500 11.7 * NOTE: This signal is at the system floor noise level. ** NOTE: At frequencies above 9.7GHz no EUT emissions were observed. All emissions at these frequencies are less than the floor noise of the measurement system. Only the floor noise of the measurement system was observed and recorded at the frequencies above 9.7GHz. AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 27 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Spurious Field Strength Measurements: [15.33(b), 15.109(a), 15.209(a)] MEASUREMENT PROCEDURE: 1. The EUT was setup to operate as the receiver. 2. The receiving spectrum analyzer was connected directly to the antenna terminals to identify the spurious emissions prior to taking open field radiated measurements at a 3 meter distance. 3. The EUT system was set upon the wooden turntable 80cm above the ground plane at a distance of 3 meters from the receiving antenna. 4. At each suspect frequency, the EUT system was rotated and the search antenna raised and lowered to obtain the maximum signal level. 5. A scan of 30MHz through 5GHz was made. 6. Both Horizontal and Vertical polarization modes were evaluated. 7. The Field Strength E(uV/m) is calculated using the formula: E(uV/m) = LOG10-1((dBuV/m + Ant.Factor(dB) + Coax Loss(dB) - PreAmp(dB))/20) Tabulated Measurements Quasi-Peak for frequencies less than 1GHz. Average for frequencies greater than 1 GHz. Frequency Pol- Quasi Peak FCC Class B Margin Included Cable + arity Measurement Limit Antenna Factors MHz dBuV/m dBuV/m dB dB/m 300.71 H 31.76 46.00 -14.24 14.60 334.09 H 34.48 46.00 -11.52 15.79 408.14 V 31.27 46.00 -14.73 17.31 432.09 H 31.86 46.00 -14.14 17.61 456.10 H 44.03 46.00 -1.97 18.23 465.00 V 33.69 46.00 -12.31 18.51 467.76 V 41.92 46.00 -4.08 18.59 480.10 H 35.60 46.00 -10.40 18.97 501.17 V 41.21 46.00 -4.79 19.58 504.09 V 40.90 46.00 -5.10 19.66 528.11 V 39.46 46.00 -6.54 20.32 534.59 H 42.91 46.00 -3.09 20.48 601.40 H 42.12 46.00 -3.88 21.32 758.92 V 40.97 46.00 -5.03 23.93 768.46 V 39.38 46.00 -6.62 24.02 801.86 H 39.14 46.00 -6.86 24.35 868.00 H 43.40 46.00 -2.60 24.70 All other emissions in the range 30MHz - 1GHz were greater than 15dB below the limits. Measurements above 1GHZ are tabulated on next page. AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 28 of 29

Test report #20000282F FCC 15.247 for MI-4800B FCC ID: LDK102039 Tested February 2, 2000 Frequency Pol- Quasi Peak FCC Class B Margin Included Cable + arity Measurement Limit Antenna Factors MHz dBuV/m dBuV/m dB dB/m 1002.38 V 43.97 54.00 -10.03 25.44 1069.15 V 38.71 54.00 -15.29 26.25 1136.03 V 42.18 54.00 -11.82 27.29 All other emissions in the range 30MHz - 5GHz were greater than 15dB below the limits. AHD EMC Lab, 92723 M152, Dowagiac, MI 49047, (616) 424-7014 91521 Exhibit K: Page 29 of 29


Document Created: 2000-03-15 17:57:53
Document Modified: 2000-03-15 17:57:53
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