24007 2 FCC Part 15.247 FHSS Test Report Rev1
Test Report
X-Media Tech, Inc ROXW 2AJFZ-ROXW 2AJFZROXW roxw
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Document DEVICE REPORTGetApplicationAttachment.html?id=7218612Intentional Radiator Test Report For the X-Media Tech, Inc. WiLinq Tested under The FCC Rules contained in Title 47 of the CFR, Part 15.247 for Frequency Hopping Spread Spectrum March 04, 2024 Prepared for: X-Media Tech, Inc. 1200 Commerce Drive, Suite 108 Plano, TX 75093 Prepared By: H.B. Compliance Solutions 5005 S. Ash Avenue, Suite # A-10 Tempe, Arizona 85282 Reviewed By: Hoosamuddin Bandukwala Cert # ATL-0062-E Engineering Statement: The measurements shown in this report were made in accordance with the procedure indicated, and the emissions from this equipment were found to be within the limits applicable. I assume full responsibility for the accuracy and completeness of these measurements, and for the qualifications of all persons taking them. It is further stated that upon the basis of the measurement made, the equipment tested is capable of operation in accordance with the requirements of Part 15 of the FCC Rules under normal use and maintenance. All results contained herein relate only to the sample tested. Certificates and reports shall not be reproduced except in full, without the written permission of H.B Compliance Solutions, LLC. Revision # Ø 1 Report Status Sheet Report Date March 04, 2024 March 26, 2024 Reason for Revision Initial Issue Revised figure 5. HBCS Report # EMC_24007_2 Rev1 Page 2 of 50 Table of Contents EXECUTIVE SUMMARY ............................................................................................5 1. Testing Summary........................................................................................5 EQUIPMENT CONFIGURATION................................................................................6 1. Overview ....................................................................................................6 2. Test Facility.................................................................................................7 3. Description of Test Sample.........................................................................8 4. Equipment Configuration ...........................................................................8 5. Support Equipment ....................................................................................8 6. Ports and Cabling Information....................................................................8 7. Method of Monitoring EUT Operation........................................................8 8. Mode of Operation.....................................................................................9 9. Modifications .............................................................................................9 10. Disposition of EUT ......................................................................................9 Criteria for Un-Intentional Radiators ....................................................................10 1. Radiated Emissions...................................................................................10 Emissions Tests Calculations ......................................................................11 Criteria for Intentional Radiators ..........................................................................14 1. Occupied Bandwidth ................................................................................14 2. RF Power Output ......................................................................................21 3. Conducted Spurious Emissions .................................................................25 4. Radiated Spurious Emissions and Restricted Band ...................................33 6. Emissions At Band Edges ..........................................................................36 7. Time of Occupancy (Dwell Time) ..............................................................42 8. Number of Hopping Frequencies..............................................................46 9. Carrier Frequency Separation...................................................................47 10. Test Equipment ...........................................................................................49 HBCS Report # EMC_24007_2 Rev1 Page 3 of 50 11. Measurement Uncertainty ..........................................................................50 HBCS Report # EMC_24007_2 Rev1 Page 4 of 50 EXECUTIVE SUMMARY 1. Testing Summary These tests were conducted on a sample of the equipment for the purpose of demonstrating compliance with Part 15.247. All tests were conducted using measurement procedure from ANSI C63.10-2013, FCC Guidance document 558074 D01 v05r02 April 02, 2019 as appropriate. Test Name Unintentional Radiated Emissions A/C Powerline Conducted Emissions Occupied Bandwidth Peak Output Power Conducted Spurious Emissions Radiated Spurious Emissions & Restricted Band Emissions at Band Edges Time of Occupancy (Dwell Time) Number of Hopping Channels Carrier Frequency Separation Test Method/Standard 15.209 15.207 15.247(a)(2) 15.247(b) 15.247(d) 15.247(d), 15.209(a), 15.205 15.247(d), 15.209(a), 15.205 15.247(a) 15.247(a) 15.247(a) Result Pass N/A Pass Pass Pass Pass Pass Pass Pass Pass Comments Battery Operated Device HBCS Report # EMC_24007_2 Rev1 Page 5 of 50 EQUIPMENT CONFIGURATION 1. Overview H.B Compliance Solutions was contracted by X-Media Tech, Inc to perform testing on the WiLinq under the purchase order number 257524. This document describes the test setups, test methods, required test equipment, and the test limit criteria used to perform compliance testing of the X-Media Tech, WiLinq. The tests were based on FCC Part 15 Rules. The tests described in this document were formal tests as described with the objective of the testing was to evaluate compliance of the Equipment Under Test (EUT) to the requirements of the aforementioned specifications. GROM Audio should retain a copy of this document and it should be kept on file for at least five years after the manufacturing of the EUT has been permanently discontinued. The results obtained relate only to the item(s) tested. Product Name: Model(s) Tested: FCC ID: Supply Voltage Input: Frequency Range: No. of Channels: Necessary Bandwidth Type(s) of Modulation: Range of Operation Power: Emission Designator: Channel Spacing(s) Test Item: Type of Equipment: Antenna Requirement (§15.203) : Environmental Test Conditions: Modification to the EUT: Evaluated By: Test Date(s): WiLinq WLQ1 2AJFZ-ROXW Primary Power: 5 VDC (USB) 2402-2480MHz 79 Channels N/A GFSK, DPSK, DQPSK 0.0079W N/A None Pre-Production Portable Type of Antenna: Chip Antenna Gain of Antenna: 2dBi Temperature: 15-35C Humidity: 30-60% Barometric Pressure: 860-1060 mbar None Staff at H.B. Compliance Solutions 02/14/2024 till 02/27/2024 HBCS Report # EMC_24007_2 Rev1 Page 6 of 50 2. Test Facility All testing was performed at H.B. Compliance Solutions. This facility is located at 5005 S. Ash Avenue, Suite # A-10, Tempe AZ-85282. All equipment used in making physical determination is accurate and bears recent traceability to the National Institute of Standards and Technology. Radiated Emissions measurements were performed in a GTEM chamber (equivalent to an Open Area Test Site). In accordance with §2.948(a)(3), a complete site description is contained at H.B. Compliance Solutions. Test facility H.B. Compliance Solutions is an ANAB accredited test site. The ANAB certificate number is L2458. The scope of accreditation can be found on ANAB website www.anab.org HBCS Report # EMC_24007_2 Rev1 Page 7 of 50 3. Description of Test Sample The GROM Audio, WiLinq is a plug and play device used in automotives to convert wired Andriod device to wireless. 4. Equipment Configuration Ref. ID Name / Description # 1 WiLinq (Sample #1 For Conducted Testing) # 2 WiLinq (Sample #2 For Radiated Testing) Table 1. Equipment Configuration 5. Support Equipment Model Number WLQ1 WLQ1 Serial Number - All support equipment supplied is listed in the following Support Equipment List. Ref ID Name / Manufacturer Model # Serial # Description # 3 CP2102 USB to - - - TTL/UART # 4 Laptop Computer Acer Swift SF314-52 - Table 2. Support Equipment 6. Ports and Cabling Information Ref ID Port name on Cable Qty. the EUT Description # 5 USB C USB C to 1 USB A # 6 TTL/UART 3 Wire 1 Table 3. Ports and Cabling Information Length (m) 0.1 Shielded? (Y/N) N Termination Box ID & Port ID # 4 0.2 N # 3 / # 4 7. Method of Monitoring EUT Operation A test receiver will be used to monitor the data transmission from the EUT. HBCS Report # EMC_24007_2 Rev1 Page 8 of 50 8. Mode of Operation To Support FCC testing, a test firmware was provided to allow configuration of the data rates, transmission channel, and power level, as well as to enable frequency hopping for worst case emissions. Pretesting was performed across all operational modes to determine the data rate for each that provided the worst case-emissions. 9. Modifications 9.1 Modifications to EUT No modifications were made to the EUT 9.2 Modifications to Test Standard No Modifications were made to the test standard. 10. Disposition of EUT The test sample including all support equipment submitted to H.B Compliance Solutions for testing will be returned to X-Media Tech at the completion of testing & certification. HBCS Report # EMC_24007_2 Rev1 Page 9 of 50 Criteria for Un-Intentional Radiators 1. Radiated Emissions Test Requirement(s): Test Results: §15.109 Pass Test Engineer(s): Test Date(s): Evan L. Feb 12, 2024 Test Procedures: The final radiated emissions test was performed using the parameters described above as worst case. That final test was conducted at a facility that meets the ANSI C63.4 NSA requirements. The frequency range noted in the data sheets was scanned/tested at that facility. Emissions were maximized as specified, by varying table azimuth, antenna height, and manipulating cables. Using the mode of operation and configuration noted within this report, a final radiated emissions test was performed. The frequency range investigated (scanned), is also noted in this report. Radiated emissions measurements were made at the EUT azimuth and antenna height such that the maximum radiated emissions level will be detected. This requires the use of a turntable and an antenna positioner. The preferred method of a continuous azimuth search is utilized for frequency scans of the EUT field strength with both polarities of the measuring antenna. A calibrated, linearly polarized antenna was positioned at the specified distance from the periphery of the EUT. Note: The specified distance is the horizontal separation between the closest periphery of the EUT and the center of the axis of the elements of the receiving antenna. However, if the receiving antenna is a log-periodic array, the specified distance shall be the distance between the closest periphery of the EUT and the front-to-back center of the array of elements. Tests were made with the antenna positioned in both the horizontal and vertical polarization planes. The measurement was varied in height above the conducting ground plane to obtain the maximum signal strength. Though specified in the report, the measurement distance shall be 3 meters. At any measurement distance, the antenna height was varied from 1 meter to 4 meters. These height scans apply for both horizontal and vertical polarization, except that for vertical polarization the minimum height of the center of the antenna shall be increased so that the lowest point of the bottom of the antenna clears the ground surface by at least 25 cm. Frequency Range (MHz) 30 MHz to 1 GHz 1 GHz to 11 GHz Peak Data (kHz) 120 kHz 1MHz Quasi-Peak Data (kHz) 120 kHz N/A Average Data (kHz) N/A 1MHz Measurements were made using the bandwidths and detectors specified. The video filter was at least as wide as the IF bandwidth of the measuring receiver. Table 4. Radiated Emissions Measurement Bandwidth HBCS Report # EMC_24007_2 Rev1 Page 10 of 50 Emissions Tests Calculations In the case of indoor measurements, radiated emissions measurements are made by the manipulation of correction factors using TILE4 software. This is done automatically by the software during the final measurement process. In both cases, the level of the Field Strength of the interfering signal is calculated by adding the Antenna Factor, Cable Factor and by subtracting the Amplifier Gain from the measured reading. The basic equation is as follows: FS = RA + AF + (CF AG) Where: FS = Field Strength RA = Receiver (indicated) Amplitude AF = Antenna Factor CF = Cable Attenuation Factor AG = Amplifier Gain This laboratory uses an approach of combining the CF and AG using an end-to-end measurement of the entire cabling system, including the test cable, any in-line amplifiers, attenuators, or transient protection networks, all measured in-situ. For a sample calculation, assume a receiver reading of 52.5 dBuV is obtained. With an antenna factor of 7.4 and a combined cable factor (CF + AG) of -27.9: FS = 52.5 + 7.4 + (-27.9) = 32 dBuV/m FS = 32 dBuV/m If desired, this can be converted into its corresponding level in uV/m: FS = 10^((32 dBuV/m)/20) = 39.8 uV/m HBCS Report # EMC_24007_2 Rev1 Page 11 of 50 Figure 1. Radiated Emissions Test Setup (30MHz 1GHz) HBCS Report # EMC_24007_2 Rev1 Page 12 of 50 P e ak Am p lit u d e in d Bu V /m H.B. Compliance Solutions Radiated Emissions 30 MHz - 1 GHz 3 Meter Distance 80 Limit Peak 70 QP_Final 60 50 40 30 20 10 0 10M 100M 1G Frequency Plot 1 Radiated Emissions 30MHz to 1GHz Frequency Measured Level Detector (MHz) 76.32 22.04 Peak 126.81 33.48 Peak 150.04 30.55 Peak 300.00 33.41 Peak 450.06 37.74 Peak Table 5. Final Measurement Results for Radiated Emissions Limit (dBuV) 40.0 43.52 43.52 46.02 46.02 Margin (dB) -17.96 -10.04 -12.97 -12.61 -8.28 HBCS Report # EMC_24007_2 Rev1 Page 13 of 50 Criteria for Intentional Radiators 1. Occupied Bandwidth Test 15.247(a)(2), ANSI C63.10 Test Engineer(s): Requirement(s): Test Results: Pass Test Date(s): Sean E. Feb 14, 2024 Test Procedure: Test Setup: As required by 47 CFR 15.247(a): For Frequency hopping systems operating in the 2400-2483.5 MHz band: measurements to be made with 20dB bandwidth for frequency hopping systems. Customer provided a test mode internal to the EUT to control the RF modulation, and frequency channel. The EUT was connected through an attenuator to a Spectrum Analyzer. The measured highest peak power was set relative to zero dB reference. The RBW of the Spectrum Analyzer was set to 100kHz and VBW>RBW. Measurements were carried out at the low, mid and high channels of the TX band at the output terminals of the EUT. Figure 2. Occupied Bandwidth Test Setup HBCS Report # EMC_24007_2 Rev1 Page 14 of 50 Test Results: Frequency Recorded Comments (MHz) Measurement 2402 1.04 MHz GFSK 2440 1.04 MHz GFSK 2480 1.04 MHz GFSK 2402 1.40 MHz QPSK 2440 1.40 MHz QPSK 2480 1.40 MHz QPSK 2402 1.41 MHz DQPSK 2440 1.40 MHz DQPSK 2480 1.41 MHz DQPSK Table 6. Occupied Bandwidth Summary, Test Results The following pages show measurements of Occupied Bandwidth plots: HBCS Report # EMC_24007_2 Rev1 Page 15 of 50 Plot 2 Lowest Channel 20dB BW (GFSK) Plot 3 Middle Channel 20dB BW (GFSK) HBCS Report # EMC_24007_2 Rev1 Page 16 of 50 Plot 4 Highest Channel 20dB BW (GFSK) Plot 5 Lowest Channel 20dB BW (QPSK) HBCS Report # EMC_24007_2 Rev1 Page 17 of 50 Plot 6 Middle Channel 20dB BW (QPSK) Plot 7 Highest Channel 20dB BW (QPSK) HBCS Report # EMC_24007_2 Rev1 Page 18 of 50 Plot 8 Lowest 20dB BW (DQPSK) Plot 9 Middle Channel 20dB BW (DQPSK) HBCS Report # EMC_24007_2 Rev1 Page 19 of 50 Plot 10 Highest Channel 20dB BW (DQPSK) HBCS Report # EMC_24007_2 Rev1 Page 20 of 50 2. RF Power Output Test Requirement(s): §15.247(b)(3) Test Results: Pass Test Engineer(s): Test Date(s): Sean E. Feb 14, 2024 Test Procedures: As required by 47 CFR 15.247(b)(3), RF Power output measurements were made at the RF output terminals of the EUT Customer provided a test mode internal to the EUT to control the RF modulation, and frequency channel. The EUT was connected through an attenuator to a Spectrum Analyzer capable of making power measurements. Measurements were made at the low, mid, and high channels of the entire frequency band. Test Setup: Figure 3. RF Power Test Setup HBCS Report # EMC_24007_2 Rev1 Page 21 of 50 Test Results: Frequency (MHz) Conducted Power (dBm) 2402 8.27 2440 9.03 2480 8.80 Table 7. RF Power Output, Test Results Conducted Power (W) 0.0067 0.0079 0.0076 Specification Limit 0.125W 0.125W 0.125W HBCS Report # EMC_24007_2 Rev1 Page 22 of 50 Plot 11 Output Power Lowest Channel Plot 12 Output Power Middle Channel HBCS Report # EMC_24007_2 Rev1 Page 23 of 50 Plot 13 Output Power Highest Channel HBCS Report # EMC_24007_2 Rev1 Page 24 of 50 3. Conducted Spurious Emissions Test Requirement(s): Test Results: §15.247(c) Pass Test Engineer(s): Test Date(s): Sean E. Feb 15, 2024 Test Procedures: As required by 47 CFR 15.247(c): In any 100kHz bandwidth the frequency band in which the spread spectrum or digitally modulation intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20dB below that in the 100kHz bandwidth within the band that contains the highest level of the desired power, based on either and RF conducted or a radiated measurement. Conducted spurious emissions at antenna terminal measurements were made at the RF output antenna terminal of the EUT. Customer provided a test mode internal to the EUT to control the RF modulation, and frequency channel. The EUT was connected through an attenuator to a Spectrum Analyzer with RBW set to 100kHz and VBW RBW. The Spectrum Analyzer was set to sweep from 30MHz up to 10th harmonic of the fundamental or 40GHz whichever is the lesser. Measurements were made at the low, mid and high frequency of the transmit band. Test Setup: Figure 4. Conducted Spurious Emissions Test Setup HBCS Report # EMC_24007_2 Rev1 Page 25 of 50 Test Data Frequency (GHz) Measured Level (dBm) Limit (dBm) 4.805 -58.73 -12.2 7.210 -55.07 -12.2 Table 8. Lowest Channel Conducted Spurious Emissions, Test Results Frequency (GHz) Measured Level (dBm) Limit (dBm) 4.880 -54.70 -11.5 7.320 -52.40 -11.5 Table 9. Middle Channel Conducted Spurious Emissions, Test Results Frequency (GHz) Measured Level (dBm) Limit (dBm) 4.960 -52.49 -11.8 7.440 -57.90 -11.8 Table 10. Highest Channel Conducted Spurious Emissions, Test Results HBCS Report # EMC_24007_2 Rev1 Page 26 of 50 Plot 14 Low Band 30MHz to 1GHz Plot 15 Low Band 1GHz to 6GHz HBCS Report # EMC_24007_2 Rev1 Page 27 of 50 Plot 16 Low Band 6GHz to 12GHz Plot 17 Low Band 12GHz to 25GHz HBCS Report # EMC_24007_2 Rev1 Page 28 of 50 Plot 18 Mid Band 30MHz to 1GHz Plot 19 Mid Band 1GHz to 6GHz HBCS Report # EMC_24007_2 Rev1 Page 29 of 50 Plot 20 Mid Band 6GHz to 12GHz Plot 21 Mid Band 12GHz to 25GHz HBCS Report # EMC_24007_2 Rev1 Page 30 of 50 Plot 22 High Band 30MHz to 1GHz Plot 23 High Band 1GHz to 6GHz HBCS Report # EMC_24007_2 Rev1 Page 31 of 50 Plot 24 High Band 6GHz to 12GHz Plot 25 High Band 12GHz to 25GHz HBCS Report # EMC_24007_2 Rev1 Page 32 of 50 4. Radiated Spurious Emissions and Restricted Band Test Requirement(s): Test Results: §15.247(d), 15.209(a), Test Engineer(s): 15.205 Pass Test Date(s): Sean E. Feb 27, 2024 Test Procedures: As required by 47 CFR 15.247, Radiated spurious measurements were made in accordance with the procedures of the FCC Guidance Document 558074 D01 and ANSI C63.10. The EUT was placed on a non-reflective table inside a 3-meter open area test site. The EUT was set on continuous transmit. The measurement antenna was placed at a distance of 3 meters from the EUT. During the tests, the antenna height and polarization as well as EUT azimuth were varied in order to identify the maximum level of emissions from the EUT. The frequency range up to the 10th harmonic was investigated included all the restricted band frequencies include 2483.5MHz. Measurement 10dB below the limits were not reported. To get a maximum emission level from the EUT, the EUT was rotated throughout the X-axis, Y-axis and Z-axis. Worst case is X-axis Detector Resolution Setting Bandwidth Peak 1MHz Average 1MHz Table 11. Analyzer Settings Video Bandwidth Span 3MHz 10Hz As necessary 0 Hz HBCS Report # EMC_24007_2 Rev1 Page 33 of 50 Test Setup: Figure 5. Radiated Emission Above 1GHz Test Setup HBCS Report # EMC_24007_2 Rev1 Page 34 of 50 Frequency (MHz) Peak Amplitude (dbuV/m) Peal Limit (dBuV/m) Average Amplitude (dBuV/m)) 4804 49.69 74.0 - 7206 48.94 74.0 - Table 12 - Spurious Radiated Emission Data Low Band Average Limit (dBuV/m) 54.0 54.0 Frequency (MHz) Peak Amplitude (dbuV/m) Peak Limit (dBuV/m) Average Amplitude (dBuV/m) 4880 47.97 74.0 - 7320 48.84 74.0 - Table 13 Spurious Radiated Emission Data Mid Band Average Limit (dBuV/m) 54.0 54.0 Frequency (MHz) Peak Amplitude (dbuV/m) Peak Limit (dBuV/m) Average Amplitude (dBuV/m) 4960 48.15 74.0 - 7440 49.07 74.0 - Table 14 - Spurious Radiated Emission Data High Band Average Limit (dBuV/m) 54.0 54.0 NOTE: There were no detectable emissions above the 3rd harmonic. HBCS Report # EMC_24007_2 Rev1 Page 35 of 50 6. Emissions At Band Edges Test Requirement(s): Test Results: §15.247(d) Pass Test Engineer(s): Test Date(s): Sean E. Feb 14, 2024 Test Procedures: As required by 47 CFR 15.247, Band edge radiated emissions measurements were made at the RF antenna output terminals of the EUT using the marker-delta method. Customer provided a test mode internal to the EUT to control the RF modulation, and frequency channel. The EUT output was connected directly to the spectrum analyzer through an attenuator. The EUT was set up at maximum power, first on the lowest operating channel, then on the highest operating channel of the transmit band. Detector Resolution Setting Bandwidth Peak 100 kHz Table 15 Analyzer settings Video Bandwidth Sweep Time 300 kHz Auto Test Setup: Figure 6. Band Edge Test Setup HBCS Report # EMC_24007_2 Rev1 Page 36 of 50 Test Results: Frequency Measured (MHz) Level (dBc) Detector 2400 -54.38 Peak 2483.5 -64.82 Peak 2400 -47.35 Peak 2483.5 -54.77 Peak 2400 -57.91 Peak 2483.5 -61.46 Peak 2400 -65.95 Peak 2483.5 -68.42 Peak Table 16 Band Edge Emissions Summary Limit Comments -20dBc -20dBc -20dBc -20dBc -20dBc -20dBc -20dBc -20dBc GFSK GFSK QPSK QPSK DQPSK DQPSK Hopping (2 DH1) Hopping (2 DH1) HBCS Report # EMC_24007_2 Rev1 Page 37 of 50 Plot 26 - Band Edge Low Channel (GFSK) Plot 27 Band Edge - High Channel (GFSK) HBCS Report # EMC_24007_2 Rev1 Page 38 of 50 Plot 28 - Band Edge Low Channel (QPSK) Plot 29 - Band Edge High Channel (QPSK) HBCS Report # EMC_24007_2 Rev1 Page 39 of 50 Plot 30 - Band Edge Low Channel (DQPSK) Plot 31 - Band Edge High Channel (DQPSK) HBCS Report # EMC_24007_2 Rev1 Page 40 of 50 Plot 32 - Band Edge Low Channel (Hopping 2 DH1) Plot 33 - Band Edge High Channel (Hopping 2 DH1) HBCS Report # EMC_24007_2 Rev1 Page 41 of 50 7. Time of Occupancy (Dwell Time) Test Requirement(s): Test Results: §15.247(a) Pass Test Engineer(s): Test Date(s): Sean E. Feb 15, 2024 Test Procedures: As required by 47 CFR 15.247(a), for frequency hopping spread spectrum operating at 2400-2483.5 MHz band the average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. Measurements were made with device hopping function enabled. The EUT output was connected directly to the spectrum analyzer through an attenuator. The measurements were made at the RF antenna output terminals of the EUT. Detector Resolution Setting Bandwidth Peak 1MHz Table 17 Analyzer settings Video Bandwidth Span 3MHz 0 HBCS Report # EMC_24007_2 Rev1 Page 42 of 50 Calculation: Bluetooth 1x/EDR has a typical channel hopping rate of 1600 hops/s. For DH1, DH3, and DH5 packet types, there is 1, 3, and 5 time slots for transmission, each paired with 1 receive slot, for a total of 2, 4, and 6 time slots total. Time of Occupancy Limit: 400ms x 79 hopping channels = 31.6 seconds DH1 Operation: -1600 hops/second / 2 time slots = 800 hops/second -800 hops/second / 79 channels = 10.13 hops/s/channel (# of times returning to same channel in one second) -10.13 hops/s/channel x 31.6s = 320.11 hops/channel (returns to same channel in a 31.6 second period) 320.11 hops x 390us = 124.84 ms (worst case dwell time for DH1 operation) By following the same process for DH3 and DH5 packet types: DH3 Operation: -1600 hops/second / 4 time slots = 400 hops/second -400 hops/second / 79 channels = 5.06 hops/s/channel -5.06 hops/s/channel x 31.6s = 159.9 hops/channel 159.9 hops x 1.644ms = 262.88 ms (worst case dwell time for DH3 operation) DH5 Operation: -1600 hops/second / 6 time slots = 266.67 hops/second -266.67 hops/second / 79 channels = 3.38 hops/s/channel -3.38 hops/s/channel x 31.6s = 106.81 hops/channel 106.81 hops x 2.89ms = 308.68 ms (worst case dwell time for DH3 operation) HBCS Report # EMC_24007_2 Rev1 Page 43 of 50 Plot 34 Time Slot Length (3 DH1) Plot 35 Time Slot Length (3 DH3) HBCS Report # EMC_24007_2 Rev1 Page 44 of 50 Plot 36 Time Slot Length (3 DH5) HBCS Report # EMC_24007_2 Rev1 Page 45 of 50 8. Number of Hopping Frequencies Test Requirement(s): Test Results: §15.247(a) Pass Test Engineer(s): Test Date(s): Sean E. Feb 14, 2024 Test Procedures: As required by 47 CFR 15.247(a), for frequency hopping spread spectrum operating at 2400MHz-2483.5MHz band. Measurements were made with device hopping function enabled. The EUT output was connected directly to the spectrum analyzer through an attenuator. The measurements were made at the RF antenna output terminals of the EUT. Peak detector was used, and trace was set to max hold Plot 37 Number of Frequency Hops 2400MHz to 2483.5MHz (79Hops) HBCS Report # EMC_24007_2 Rev1 Page 46 of 50 9. Carrier Frequency Separation Test Requirement(s): Test Results: §15.247(a)(1) Pass Test Engineer(s): Test Date(s): Sean E. Feb 14, 2024 Test Procedures: As required by 47 CFR 15.247(a), for frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25kHz or the 20dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems in the 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 125mW. Measurements were made with device hopping function enabled. The EUT output was connected directly to the spectrum analyzer through an attenuator. The measurements were made at the RF antenna output terminals of the EUT. Peak detector was used, and trace was set to max hold. Frequency Measured (MHz) Frequency Separation (MHz) Detector Limit (two-thirds of 20dB BW) 2440.0 1 Peak 1.41 MHz x 0.67 = 0.945 MHz Table 18 Carrier Frequency Separation - Summary HBCS Report # EMC_24007_2 Rev1 Page 47 of 50 Plot 38 Carrier Frequency Separation (Using Delta Marker Method) HBCS Report # EMC_24007_2 Rev1 Page 48 of 50 10. Test Equipment Equipment Manufacturer Model Spectrum Analyzer Agilent E4443A Serial # US41420164 Last Cal Date Jun-01-23 Cal Due Date Jun-01-24 EMI Test Receiver High Pass Filter Spectrum Analyzer Attenuator 20dB Horn Antenna Rhode & Schwarz Mini-Circuits Hewlett Packard Weinschel Com-Power ESMI26 840607/005 VHF-3100+ 1048 8666B 2747A05264 41-20-12 86332 AHA-118 711150 Nov-15-23 Nov-15-24 Verified Feb-01-24 Feb-01-25 Verified Jan-09-23 Jan-09-25 Antenna EMCO USB Wideband Agilent Power Sensor Spectrum Analyzer Hewlett Packard Spectrum Analyzer Hewlett Packard Two Line V- Teseq Network LISN Table 19 Test Equipment List GTEM 5417 U2021XA 1063 Verified MY54210014 Nov-15-23 Nov-15-24 8563E 3821A09316 May-02-23 May-02-24 8595EM 3801A00177 May-02-23 May-02-24 NNB 51 43198 Jan-12-23 Jan-12-25 *Statement of Traceability: Test equipment is maintained and calibrated on a regular basis. All calibrations have been performed by a 17025 accredited test facility, traceable to National Institute of Standards and Technology (NIST) HBCS Report # EMC_24007_2 Rev1 Page 49 of 50 11. Measurement Uncertainty ISO/IEC 17025 requires that an estimate of the measurement uncertainties associated with the emissions test results be included in the report. These measurements figures are calculated in accordance with ETSI TR 100 028 Parts 1 and 2. Instrumentation measurement uncertainty has not been taken into account to determine compliance. The following measurement uncertainty values have been calculated as show in the table below: Measured Parameter Conducted Emissions (AC Power) Radiated Emission below 30MHz Radiated Emissions below 1GHz Radiated Emissions above 1GHz Measurement Unit dBuV or dBuA dBuV/m dBuV/m dBuV/m Frequency Range 150kHz 30MHz 9kHz-30MHz 30 1000MHz 1 26.5GHz Expanded Uncertainty ± 4.3dB ± 2.96dB ± 5.6dB ± 4.1dB The reported expanded uncertainty has been estimated at a 95% confidence level (k=2) END OF TEST REPORT HBCS Report # EMC_24007_2 Rev1 Page 50 of 50
Related FCC IDs:
- 2AJFZ-ROXW - X-Media Tech, Inc WIRELESS ANDROID AUTO ADAPTER [-ROXW] Microsoft: Print To PDF