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Agent Authorization Rev 1.0 | Cover Letter(s) | 16.11 KiB | July 25 2019 | |||
| 1 | External Photos | / August 09 2019 | ||||||
| 1 |
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FCC Short Long Term Confidentiality Request Rev4.1 | Cover Letter(s) | 15.75 KiB | July 25 2019 | |||
| 1 |
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Family models declaration letter. | Cover Letter(s) | 125.51 KiB | July 25 2019 | |||
| 1 | Internal Photos | / August 09 2019 | ||||||
| 1 |
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Label and location | ID Label/Location Info | 382.42 KiB | July 25 2019 | |||
| 1 |
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RF exposure report | RF Exposure Info | 69.53 KiB | July 25 2019 | |||
| 1 |
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S19071003003001-EDR | Test Report | 5.47 MiB | July 25 2019 | |||
| 1 | Test Setup Photos | / August 09 2019 | ||||||
| 1 | Users Manual | / August 09 2019 |
| 1 | Agent Authorization Rev 1.0 | Cover Letter(s) | 16.11 KiB | July 25 2019 |
Helm Audio LTD Agent Authorization Company: Helm Audio LTD Address: 35 Floor, Central Plaza, 18 Harbour Road, Wan Chai, Hong Kong Product Name: HELM True Wireless 5.0 Model Number(s): HTW-500B, HTW-500DO Product Description: Its a HELM True Wireless 5.0 We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:
Name:
Title:
Jerry Wu Manager Company: Helm Audio LTD Date: 2019/07/23
| 1 | FCC Short Long Term Confidentiality Request Rev4.1 | Cover Letter(s) | 15.75 KiB | July 25 2019 |
Helm Audio LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2019-07-23 Subject; Request for Confidentiality FCC ID: 2ATGH-500B To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);
Schematic Diagram Block Diagram Operational Description External Photos Test Setup Photos Internal Photos User Manual OR For 45 days, pursuant to Public Notice DA 04-1705. For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:
Name: Jerry Wu Title: Manager
| 1 | Family models declaration letter. | Cover Letter(s) | 125.51 KiB | July 25 2019 |
Helm Audio LTD Models Declaration Letter We Company: Helm Audio LTD Address: 35 Floor, Central Plaza, 18 Harbour Road, Wan Chai, Hong Kong Product: HELM True Wireless 5.0 Brand: HELM AUDIO Model Name: HTW-500B, HTW-500DO All models are the same circuit and RF module, except the model name. Sincerely Name:
Jerry Wu Signature Title:
Date:
Manager 2019-07-23
| 1 | RF exposure report | RF Exposure Info | 69.53 KiB | July 25 2019 |
FCC ID: 2ATGH-500B Portable device According to 15.247(e)(i) and 1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commissions guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances 50 mm are determined by:
[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)][f(GHZ)] 3.0 for 1-g SAR and 7.5 for 10-g extremity SAR, where:
When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BR+EDR:
Antenna Type: FPCB Antenna Antenna Gain: Right: 0.44dBi Left: 0.46dBi For Left:
f(GHZ) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison Modulation Channel Freq.
(GHz) 2.402 2.441 2.480 2.402 2.441 2.480 2.402 2.441 2.480 GFSK
/4-
DQPSK 8DPSK For Right:
Modulation Channel Freq.
(GHz) GFSK
/4-
DQPSK 8DPSK 2.402 2.441 2.480 2.402 2.441 2.480 2.402 2.441 2.480 Conduct ed power
(dBm)
-0.43 0.31 0.341 1.53 2.47 2.75 1.82 2.63 2.82 Conducte d power
(mW) Tune-up power
(dBm) 0.906 1.074 1.082 1.422 1.766 1.884 1.521 1.832 1.914 11 11 11 2.51 2.51 2.51 2.51 2.51 2.51 Max tune-up power
(dBm) Max tune-up power
(mW) Distance
(mm) Result calculatio n 1g SAR Exclusion threshold SAR test exclusion 2 2 2 3.5 3.5 3.5 3.5 3.5 3.5 1.585 1.585 1.585 2.239 2.239 2.239 2.239 2.239 2.239
<5
<5
<5
<5
<5
<5
<5
<5
<5 0.49127 0.49524 0.49918 0.69393 0.69954 0.70511 0.69393 0.69954 0.70511 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 YES YES YES YES YES YES YES YES YES Conduct ed power
(dBm)
-0.67 0.3
-0.08 1.96 2.49 2.21 2.14 2.72 2.41 Conducte d power
(mW) Tune-up power
(dBm) Max tune-up power
(dBm) Max tune-up power
(mW) Distance
(mm) Result calculatio n 1g SAR Exclusion threshold SAR test exclusion 0.857 1.072 0.982 1.570 1.774 1.663 1.637 1.871 1.742 11 11 11 2.51 2.51 2.51 2.51 2.51 2.51 2 2 2 3.5 3.5 3.5 3.5 3.5 3.5 1.585 1.585 1.585 2.239 2.239 2.239 2.239 2.239 2.239
<5
<5
<5
<5
<5
<5
<5
<5
<5 0.49127 0.49524 0.49918 0.69393 0.69954 0.70511 0.69393 0.69954 0.70511 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 YES YES YES YES YES YES YES YES YES Conclusion:
For the max result: 0.70511 3.0 for 1-g SAR, No SAR is required. Signature:
Date: 2019-07-03 NAME AND TITLE (Please print or type): Jason Chen /Manager COMPANY (Please print or type): Shenzhen NTEK Testing Technology Co., Ltd./ 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Baoan District, Shenzhen 518126 P.R. China
| 1 | S19071003003001-EDR | Test Report | 5.47 MiB | July 25 2019 |
Report No.:
S19071003003001 RADIO TEST REPORT FCC ID: 2ATGH-500B Product: HELM True Wireless 5.0 Trade Mark: HELM AUDIO Model No.: HTW-500B Serial Model: HTW-500DO Report No.: S19071003003001 Prepared for Helm Audio LTD 35 Floor, Central Plaza, 18 Harbour Road, Wan Chai, Hong Kong Prepared by Shenzhen NTEK Testing Technology Co., Ltd. 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Baoan District, Shenzhen 518126 P.R. China Tel.: +86-755-6115 9388 Fax.: +86-755-6115 6599 Website:http://www.ntek.org.cn Version.1.2 Page 1 of 73 Report No.:
S19071003003001 TABLE OF CONTENTS 1 2 3 6.1 6.2 6.3 TEST RESULT CERTIFICATION ............................................................................................................................ 3 SUMMARY OF TEST RESULTS .............................................................................................................................. 4 FACILITIES AND ACCREDITATIONS .................................................................................................................. 5 FACILITIES ............................................................................................................................................................ 5 3.1 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ..................................................................................... 5 3.3 MEASUREMENT UNCERTAINTY .................................................................................................................... 5 4 GENERAL DESCRIPTION OF EUT ........................................................................................................................ 6 5 DESCRIPTION OF TEST MODES ........................................................................................................................... 8 6 SETUP OF EQUIPMENT UNDER TEST ................................................................................................................ 9 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM .......................................................................... 9 SUPPORT EQUIPMENT ..................................................................................................................................... 10 EQUIPMENTS LIST FOR ALL TEST ITEMS .................................................................................................. 11 TEST REQUIREMENTS .......................................................................................................................................... 13 CONDUCTED EMISSIONS TEST .................................................................................................................... 13 7.1 RADIATED SPURIOUS EMISSION ................................................................................................................. 18 7.2 NUMBER OF HOPPING CHANNEL ................................................................................................................ 32 7.3 HOPPING CHANNEL SEPARATION MEASUREMENT .............................................................................. 34 7.4 AVERAGE TIME OF OCCUPANCY (DWELL TIME) .................................................................................... 40 7.5 20DB BANDWIDTH TEST ................................................................................................................................ 47 7.6 PEAK OUTPUT POWER .................................................................................................................................... 53 7.7 CONDUCTED BAND EDGE MEASUREMENT ............................................................................................. 59 7.8 7.9 SPURIOUS RF CONDUCTED EMISSION ...................................................................................................... 66 7.10 ANTENNA APPLICATION ................................................................................................................................ 73 7.11 TECHNICAL REQUIREMENT ......................................................................................................................... 73 7 Version.1.2 Page 2 of 73 Report No.:
S19071003003001 1 TEST RESULT CERTIFICATION Applicants name .......................... : Helm Audio LTD Address ......................................... : 35 Floor, Central Plaza, 18 Harbour Road, Wan Chai, Hong Kong Manufacturer's Name ................... : Helm Audio LTD Address ......................................... : 35 Floor, Central Plaza, 18 Harbour Road, Wan Chai, Hong Kong Product description Product name................................ : HELM True Wireless 5.0 Model and/or type reference ...... : HTW-500B Serial Model .................................. : HTW-500DO Measurement Procedure Used:
STANDARD/ TEST PROCEDURE TEST RESULT APPLICABLE STANDARDS FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C KDB 174176 D01 Line Conducted FAQ v01r01 ANSI C63.10-2013 Complied This device described above has been tested by NTEK Testing Technology Co., Ltd., and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of Shenzhen NTEK Testing Technology Co., Ltd., this document may be altered or revised by Shenzhen NTEK Testing Technology Co., Ltd., personnel only, and shall be noted in the revision of the document. The test results of this report relate only to the tested sample identified in this report. Jun. 27, 2019 to Jul. 05, 2019 Date of Test
:
Testing Engineer Technical Manager Authorized Signatory
:
:
:
(Estelle Chen)
(Jason Chen)
(Sam Chen) Version.1.2 Page 3 of 73 2 SUMMARY OF TEST RESULTS Report No.:
Standard Section 15.207 15.209 (a) 15.205 (a) 15.247(a)(1) 15.247(b)(1) 15.247(a)(iii) 15.247(a)(iii) 15.247(a)(1) 15.205 15.203 FCC Part15 (15.247), Subpart C Test Item Conducted Emission Radiated Spurious Emission Hopping Channel Separation Peak Output Power Number of Hopping Frequency Dwell Time Bandwidth Band Edge Emission Antenna Requirement 15.247(g)(h) Technical Requirement S19071003003001 Verdict PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS Remark Remark:
1. 2. All test items were verified and recorded according to the standards and without any deviation during N/A denotes test is not applicable in this Test Report. the test. 3. There are left and right ear plugs on the EUT. Both have been tested. Version.1.2 Page 4 of 73 Report No.:
S19071003003001 3 FACILITIES AND ACCREDITATIONS 3.1 FACILITIES All measurement facilities used to collect the measurement data are located at 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street, Baoan District, Shenzhen 518126 P.R. China. The sites are constructed in conformance with the requirements of ANSI C63.7, ANSI C63.10 and CISPR Publication 22. 3.2 LABORATORY ACCREDITATIONS AND LISTINGS Site Description CNAS-Lab.
: The Laboratory has been assessed and proved to be in compliance with IC-Registration FCC- Accredited A2LA-Lab. Name of Firm Site Location CNAS-CL01:2006 (identical to ISO/IEC 17025:2005) The Certificate Registration Number is L5516. The Certificate Registration Number is 9270A-1. Test Firm Registration Number: 463705. Designation Number: CN1184 The Certificate Registration Number is 4298.01 This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system
(refer to joint ISO-ILAC-IAF Communiqu dated 8 January 2009).
: Shenzhen NTEK Testing Technology Co., Ltd.
: 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street, Baoan District, Shenzhen 518126 P.R. China. 3.3 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. Item Conducted Emission Test RF power, conducted Spurious emissions, conducted All emissions, radiated(30MHz~1GHz) All emissions, radiated(1GHz~6GHz) All emissions, radiated(6GHz) Temperature Humidity Uncertainty 2.80dB 0.16dB 0.21dB 2.64dB 2.40dB 2.52dB 0.5C 2%
No. 1 2 3 4 5 6 7 8 Version.1.2 Page 5 of 73 4 GENERAL DESCRIPTION OF EUT Report No.:
S19071003003001 Equipment Trade Mark FCC ID Model No. Serial Model Product Feature and Specification HELM True Wireless 5.0 HELM AUDIO 2ATGH-500B HTW-500B HTW-500DO Difference between the Left unit and right unit The circuit diagram and the electronic components between the left and right ear is the same, The part placement of certain components between the two are difference. Their PCB Layout is different. The R unit is the Main earplugs, its working principle is that the Main earplug drives another earplugs L. Operating Frequency 2402MHz~2480MHz Modulation GFSK, /4-DQPSK, 8-DPSK Bluetooth Version BT V5.0 Number of Channels 79 Channels Antenna Type FPCB Antenna Antenna Gain Power supply HW Version SW Version Right: 0.44dBi Left: 0.46dBi DC supply:
Headset: DC 3.7V/45mAh from Battery. Charging case: DC 3.7V/800mAh from Battery or DC 5V from USB Port. Adapter supply:
Left: R1017 Main V2.1 20190516 L Right: R1017 Main V2.0 20190507 R Left: HELM_True_Wireless_R_20190522_V20 Right: HELM_True_Wireless_L_20190522_V20 Note: Based on the application, features, or specification exhibited in User's Manual, the EUT is considered as an ITE/Computing Device. More details of EUT technical specification, please refer to the User's Manual. Version.1.2 Page 6 of 73 Report No.:
S19071003003001 Revision History Report No. S19071003003001 Version Rev.01 Description Initial issue of report Issued Date Jul. 08, 2019 Version.1.2 Page 7 of 73 Report No.:
S19071003003001 5 DESCRIPTION OF TEST MODES To investigate the maximum EMI emission characteristics generates from EUT, the test system was pre-scanning tested base on the consideration of following EUT operation mode or test configuration mode which possible have effect on EMI emission level. Each of these EUT operation mode(s) or test configuration mode(s) mentioned above was evaluated respectively. The Transmitter was operated in the normal operating mode. The TX frequency was fixed which was for the purpose of the measurements. Test of channel included the lowest and middle and highest frequency to perform the test, then record on this report. Those data rates (1Mbps for GFSK modulation; 2Mbps for /4-DQPSK modulation; 3Mbps for 8-DPSK modulation) were used for all test. The EUT was pretested with 3 orientations placed on the table for the radiated emission measurement X, Y, and Z-plane. The X-plane results were found as the worst case and were shown in this report. Carrier Frequency and Channel list:
Channel Frequency(MHz) 0 1 39 40 77 78 2402 2403 2441 2442 2479 2480 Note: fc=2402MHz+k1MHz k=0 to 78 The following summary table is showing all test modes to demonstrate in compliance with the standard. Final Test Mode Mode 1 For AC Conducted Emission Description normal link mode Note: AC power line Conducted Emission was tested under maximum output power. Final Test Mode Description For Radiated Test Cases Note: For radiated test cases, the worst mode data rate 3Mbps on left and 3Mbps on right was reported only, because this data rate has the highest RF output power at preliminary tests, and no other significantly frequencies found in conducted spurious emission. Mode 1 Mode 2 Mode 3 Mode 4 Final Test Mode Mode 2 Mode 3 Mode 4 Mode 5 normal link mode CH00(2402MHz) CH39(2441MHz) CH78(2480MHz) For Conducted Test Cases Description CH00(2402MHz) CH39(2441MHz) CH78(2480MHz) Hopping mode Note: The engineering test program was provided and the EUT was programmed to be in continuously transmitting mode. 1. AC power line Conducted Emission was tested under maximum output power. Version.1.2 Page 8 of 73 Report No.:
S19071003003001 6 SETUP OF EQUIPMENT UNDER TEST 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM For AC Conducted Emission Mode AC PLUG C-1 E-1 EUT E-2 Adapter For Radiated Test Cases For Conducted Test Cases EUT Measurement Instrument C-2 EUT Note:The temporary antenna connector is soldered on the PCB board in order to perform conducted tests and this temporary antenna connector is listed in the equipment list. EUT built-in battery-powered, the battery is fully-charged. Version.1.2 Page 9 of 73 Report No.:
S19071003003001 6.2 SUPPORT EQUIPMENT The EUT has been tested as an independent unit together with other necessary accessories or support units. The following support units or accessories were used to form a representative test configuration during the tests. Item E-1 E-2 HELM True Wireless 5.0 HELM AUDIO Model/Type No. Peripherals HTW-500B Equipment Note EUT Series No. Mfr/Brand N/A N/A Adapter N/A N/A Item C-1 C-2 Cable Type USB Cable RF Cable Notes:
Shielded Type Ferrite Core NO NO NO NO Length 0.6m 0.5m
(1) The support equipment was authorized by Declaration of Confirmation.
(2) For detachable type I/O cable should be specified the length in cm inLengthcolumn.
(3) YES is means shielded with core; NO is means unshielded without core. Version.1.2 Page 10 of 73 Report No.:
S19071003003001 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS Radiation& Conducted Test equipment Item 1 2 3 Kind of Equipment Manufacturer Spectrum Analyzer Spectrum Analyzer Spectrum Analyzer Aglient Agilent R&S Test Receiver 4 5 Bilog Antenna 50 Coaxial 6 7 Horn Antenna
(1-18GHz) Broadband Horn Antenna Switch
(14GHz to 40GHz) Amplifier Active Loop Antenna 11 Power Meter Test Cable R&S TESEQ Anritsu EM SCHWARZBE CK EMC SCHWARZBE CK DARE Type No. Serial No. E4407B MY45108040 Last Calibrated calibration period 2019.05.18 2020.05.17 1 year until Calibrati on N9020A MY49100060 2018.10.25 2019.10.24 1 year FSV40 ESPI7 CBL6111D 101417 2018.10.25 2019.10.24 1 year 101318 31216 2019.05.18 2020.05.17 1 year 2018.04.08 2019.04.07 1 year MP59B 6200983705 2019.05.18 2020.05.17 3 year EM-AH-1018 0 2011071402 2019.04.07 2020.04.06 1 year BBHA 9170 803 2018.11.03 2019.11.02 1 year EMC051835 FMZB 1519 SE B RPR3006W 15I00041SN 980246 2018.08.08 2019.08.07 1 year 055 2019.12.05 2020.12.04 1 year
(9KHz-30MHz) Test Cable
(30MHz-1GHz) High Test Cable(1G-40G Hz) High Test Cable(1G-40G Hz) Filter temporary antenna connector
(Note) N/A N/A N/A N/A R-01 R-02 R-03 R-04 TRILTHIC 2400MHz NTS R001 O84 N/A N/A N/A N/A 29 N/A 2018.08.06 2019.08.05 1 year 2017.04.21 2020.04.20 3 year 2017.04.21 2020.04.20 3 year 2017.04.21 2020.04.20 3 year 2017.04.21 2020.04.20 3 year 2017.04.19 2020.04.18 3 year N/A N/A N/A 8 9 10 12 13 14 15 16 17 Note:
We will use the temporary antenna connector (soldered on the PCB board) When conducted test And this temporary antenna connector is listed within the instrument list Version.1.2 Page 11 of 73 AC Conduction Test equipment Item Kind of Equipment Manufacturer Report No.:
S19071003003001 Type No. Serial No. 1 Test Receiver 2 LISN R&S R&S ESCI ENV216 101160 101313 Last Calibrated until calibration 2019.05.18 2020.05.17 2019.04.17 2020.04.18 Calibration period 1 year 1 year 3 4 5 6 7 LISN 50 Coaxial Switch Test Cable
(9KHz-30MH Test Cable
(9KHz-30MH Test Cable
(9KHz-30MH z) z) z) SCHWARZBE CK ANRITSU CORP NNLK 8129 8129245 2019.05.18 2020.05.17 1 year MP59B 6200983704 2018.05.19 2020.05.18 3 year N/A N/A N/A C01 C02 C03 N/A N/A N/A 2017.04.21 2020.04.20 3 year 2017.04.21 2020.04.20 3 year 2017.04.21 2020.04.20 3 year Note: Each piece of equipment is scheduled for calibration once a year except the Test Cable which is scheduled for calibration every 3 years. Version.1.2 Page 12 of 73 Report No.:
S19071003003001 7 TEST REQUIREMENTS 7.1 CONDUCTED EMISSIONS TEST 7.1.1 Applicable Standard According to FCC Part 15.207(a) and KDB 174176 D01 Line Conducted FAQ v01r01 7.1.2 Conformance Limit Conducted Emission Limit Frequency(MHz) 0.15-0.5 0.5-5.0 5.0-30.0 56 60 Note: 1. *Decreases with the logarithm of the frequency Quasi-peak 66-56*
Average 56-46*
46 50 2. The lower limit shall apply at the transition frequencies 3. The limit decreases in line with the logarithm of the frequency in the range of 0.15 to 0.50MHz. 7.1.3 Test Configuration Reference Ground EMI Receiver EUT Auxiliary Equipment Reference Ground LISN 80cm 50 80cm LISN 7.1.4 Test Procedure According to the requirements in Section 13.1.4.1 of ANSI C63.10-2013 Conducted emissions the EUT measured in the frequency range between 0.15 MHz and 30 MHz using CISPR Quasi-Peak and average detector mode. 1. The EUT was placed 0.4 meter from the conducting wall of the shielding room. 2. The EUT was placed on a table which is 0.8m above ground plane. 3. Connect EUT to the power mains through a line impedance stabilization network (LISN). All other support equipments powered from additional LISN(s). The LISN provide 50 Ohm/ 50uH of coupling impedance for the measuring instrument. 4. Interconnecting cables that hang closer than 40 cm to the ground plane shall be folded back and forth in the center forming a bundle 30 to 40cm long. 5. I/O cables that are not connected to a peripheral shall be bundled in the center. The end of the cable may be terminated, if required, using the correct terminating impedance. The overall length shall not exceed 1 m. 6. LISN at least 80 cm from nearest part of EUT chassis. 7. The frequency range from 150 KHz to 30MHz was searched. 8. Set the test-receiver system to Peak Detect Function and specified bandwidth(IF bandwidth=9KHz) with Maximum Hold Mode 9. For the actual test configuration, please refer to the related Item EUT Test Photos. 7.1.5 Test Results Pass Version.1.2 Page 13 of 73 7.1.6 Test Results Report No.:
S19071003003001 HELM True Wireless 5.0 EUT Temperature 26 Pressure Test Voltage DC 5V from Adapter AC 120V/60Hz 1010hPa Model Name HTW-500B Relative Humidity 54%
Phase :
Test Mode L Mode 1 Frequency Reading Level Correct Factor Measure-ment
(MHz) 0.1539 0.1539 0.1900 0.1900 0.4979 0.4979 2.3580 2.3580 2.6779 2.6779 4.8018 4.8018
(dBV) 33.02 22.92 31.25 23.14 27.64 21.14 25.08 15.50 26.42 16.21 24.41 14.10
(dB) 9.82 9.82 9.82 9.82 9.83 9.83 9.91 9.91 9.98 9.98 10.06 10.06
(dBV) 42.84 32.74 41.07 32.96 37.47 30.97 34.99 25.41 36.40 26.19 34.47 24.16 Remark:
1. All readings are Quasi-Peak and Average values. 2. Factor = Insertion Loss + Cable Loss. Limits
(dBV) 65.78 55.78 64.03 54.03 56.03 46.03 56.00 46.00 56.00 46.00 56.00 46.00 Margin
(dB)
-22.94
-23.04
-22.96
-21.07
-18.56
-15.06
-21.01
-20.59
-19.60
-19.81
-21.53
-21.84 Remark QP AVG QP AVG QP AVG QP AVG QP AVG QP AVG Version.1.2 Page 14 of 73 EUT Temperature Pressure Test Voltage Report No.:
S19071003003001 HELM True Wireless 5.0 26 1010hPa DC 5V from Adapter AC 120V/60Hz Test Mode Model Name Relative Humidity 54%
N Phase :
Mode 1 HTW-500B Frequency Reading Level Correct Factor Measure-ment
(MHz) 0.1539 0.1539 0.1900 0.1900 0.2220 0.2220 0.4980 0.4980 1.3740 1.3740 4.8820 4.8820
(dBV) 33.43 20.88 32.59 20.48 30.27 18.64 25.94 18.28 20.66 10.75 21.82 11.37
(dB) 9.92 9.92 9.92 9.92 9.92 9.92 9.93 9.93 9.93 9.93 9.96 9.96
(dBV) 43.35 30.80 42.51 30.40 40.19 28.56 35.87 28.21 30.59 20.68 31.78 21.33 Limits
(dBV) 65.78 55.78 64.03 54.03 62.74 52.74 56.03 46.03 56.00 46.00 56.00 46.00 Remark:
1. All readings are Quasi-Peak and Average values. 2. Factor = Insertion Loss + Cable Loss. Margin
(dB)
-22.43
-24.98
-21.52
-23.63
-22.55
-24.18
-20.16
-17.82
-25.41
-25.32
-24.22
-24.67 Remark QP AVG QP AVG QP AVG QP AVG QP AVG QP AVG Version.1.2 Page 15 of 73 Report No.:
S19071003003001 HELM True Wireless 5.0 EUT Temperature 26 Pressure Test Voltage DC 5V from Adapter AC 240V/60Hz 1010hPa Model Name HTW-500B Relative Humidity 54%
Phase :
Test Mode L Mode 1 Frequency Reading Level Correct Factor Measure-ment
(MHz) 0.1500 0.1500 0.1900 0.1900 0.2260 0.2260 0.4980 0.4980 2.6740 2.6740 4.7938 4.7938
(dBV) 31.43 21.41 29.55 22.20 26.63 20.50 27.87 22.39 25.90 16.20 25.04 14.35
(dB) 9.82 9.82 9.82 9.82 9.82 9.82 9.83 9.83 9.97 9.97 10.06 10.06
(dBV) 41.25 31.23 39.37 32.02 36.45 30.32 37.70 32.22 35.87 26.17 35.10 24.41 Limits
(dBV) 65.99 55.99 64.03 54.03 62.59 52.59 56.03 46.03 56.00 46.00 56.00 46.00 Remark:
1. All readings are Quasi-Peak and Average values. 2. Factor = Insertion Loss + Cable Loss. Margin
(dB)
-24.74
-24.76
-24.66
-22.01
-26.14
-22.27
-18.33
-13.81
-20.13
-19.83
-20.90
-21.59 Remark QP AVG QP AVG QP AVG QP AVG QP AVG QP AVG Version.1.2 Page 16 of 73 Report No.:
S19071003003001 HELM True Wireless 5.0 EUT Temperature 26 Pressure Test Voltage DC 5V from Adapter AC 240V/60Hz 1010hPa Frequency Reading Level Correct Factor Measure-ment
(MHz) 0.1539 0.1539 0.1900 0.1900 0.2220 0.2220 0.4980 0.4980 1.3740 1.3740 4.8820 4.8820
(dBV) 33.43 20.88 32.59 20.48 30.27 18.64 25.94 18.28 20.66 10.75 21.82 11.37
(dB) 9.92 9.92 9.92 9.92 9.92 9.92 9.93 9.93 9.93 9.93 9.96 9.96
(dBV) 43.35 30.80 42.51 30.40 40.19 28.56 35.87 28.21 30.59 20.68 31.78 21.33 Remark:
1. All readings are Quasi-Peak and Average values. 2. Factor = Insertion Loss + Cable Loss. Model Name HTW-500B Relative Humidity 54%
Phase :
Test Mode N Mode 1 Limits
(dBV) 65.78 55.78 64.03 54.03 62.74 52.74 56.03 46.03 56.00 46.00 56.00 46.00 Margin
(dB)
-22.43
-24.98
-21.52
-23.63
-22.55
-24.18
-20.16
-17.82
-25.41
-25.32
-24.22
-24.67 Remark QP AVG QP AVG QP AVG QP AVG QP AVG QP AVG Version.1.2 Page 17 of 73 Report No.:
S19071003003001 7.2 RADIATED SPURIOUS EMISSION 7.2.1 Applicable Standard According to FCC Part 15.247(d) and 15.209 and ANSI C63.10-2013 7.2.2 Conformance Limit According to FCC Part 15.247(d): radiated emissions which fall in the restricted bands, as defined in 15.205(a), must also comply with the radiated emission limits specified in 15.209(a) (see 15.205(c)). According to FCC Part15.205, Restricted bands MHz 0.090-0.110 10.495-0.505 2.1735-2.1905 4.125-4.128 4.17725-4.17775 4.20725-4.20775 6.215-6.218 6.26775-6.26825 8.291-8.294 8.362-8.366 8.37625-8.38675 8.41425-8.41475 12.29-12.293 12.51975-12.52025 12.57675-12.57725 13.36-13.41 Restricted Frequency(MHz) 0.009~0.490 0.490~1.705 1.705~30.0 30-88 88-216 216-960 Above 960 MHz 16.42-16.423 16.69475-16.69525 16.80425-16.80475 25.5-25.67 37.5-38.25 73-74.6 74.8-75.2 123-138 149.9-150.05 156.52475-156.52525 156.7-156.9 162.0125-167.17 167.72-173.2 240-285 322-335.4 MHz 399.9-410 608-614 960-1240 1300-1427 1435-1626.5 1645.5-1646.5 1660-1710 2200-2300 2310-2390 2483.5-2500 2690-2900 3260-3267 3332-3339 3345.8-3358 3600-4400 2400/F(KHz) 24000/F(KHz) 20 log (uV/m) 20 log (uV/m) 30 100 150 200 500 29.5 40 43.5 46 54 GHz 4.5-5.15 5.35-5.46 7.25-7.75 8.025-8.5 9.0-9.2 9.3-9.5 10.6-12.7 14.47-14.5 15.35-16.2 17.7-21.4 22.01-23.12 23.6-24.0 31.2-31.8 36.43-36.5
(2) 300 30 30 3 3 3 3 20dBc in any 100 kHz bandwidth outside the operating frequency band. In case the emission fall within the restricted band specified on 15.205(a), then the 15.209(a) limit in the table below has to be followed. Field Strength (V/m) Field Strength (dBV/m) Measurement Distance Limits of Radiated Emission Measurement (Above 1000MHz) Frequency(MHz) Above 1000 Class B (dBuV/m) (at 3M) PEAK 74 AVERAGE 54 Remark: 1. Emission level in dBuV/m=20 log (uV/m) 2. Measurement was performed at an antenna to the closed point of EUT distance of meters. 3. Distance extrapolation factor =40log (Specific distance/ test distance) (dB);
Limit line=Specific limits (dBuV) + distance extrapolation factor. Version.1.2 Page 18 of 73 7.2.3 Measuring Instruments Report No.:
S19071003003001 The Measuring equipment is listed in the section 6.3 of this test report. 7.2.4 Test Configuration
(a) For radiated emissions below 30MHz Turntable 3m EUT 3m 1.0m 0.8 m Turntable Ground Plane
(b) For radiated emissions from 30MHz to 1000MHz
(c) For radiated emissions above 1000MHz Ground Plane Receiver 0.8m EUT Test 3m Test Receiver Coaxial Cable 1m to 4m Coaxial Cable Turntable EUT 1.5m Version.1.2 Page 19 of 73 1.5m 4m Amplifie Test Receiver 7.2.5 Test Procedure Report No.:
S19071003003001 The test site semi-anechoic chamber has met the requirement of NSA tolerance 4 dB according to the standards: ANSI C63.10-2013. The test distance is 3m.The setup is according to the requirements in Section 13.1.4.1 of ANSI C63.10-2013 and CAN/CSA-CEI/IEC CISPR 22. This test is required for any spurious emission that falls in a Restricted Band, as defined in Section 15.205. It must be performed with the highest gain of each type of antenna proposed for use with the EUT. Use the following spectrum analyzer settings:
RB / VB (emission in restricted band) 1 MHz / 1 MHz for Peak, 1 MHz / 10Hz for Average Spectrum Parameter Attenuation Start Frequency Stop Frequency Receiver Parameter Attenuation Start ~ Stop Frequency Start ~ Stop Frequency Start ~ Stop Frequency Setting Auto 1000 MHz 10th carrier harmonic Setting Auto 9kHz~150kHz / RB 200Hz for QP 150kHz~30MHz / RB 9kHz for QP 30MHz~1000MHz / RB 120kHz for QP a. The measuring distance of at 3 m shall be used for measurements at frequency up to 1GHz. For frequencies above 1GHz, any suitable measuring distance may be used. b. The EUT was placed on the top of a rotating table 0.8 m for below 1GHz and 1.5m for above 1GHz the ground at a 3 meter. The table was rotated 360 degrees to determine the position of the highest radiation. c. The height of the equipment or of the substitution antenna shall be 0.8 m for below 1GHz and 1.5m for above 1GHz; the height of the test antenna shall vary between 1 m to 4 m. Both horizontal and vertical polarizations of the antenna are set to make the measurement. d. For the radiated emission test above 1GHz:
Place the measurement antenna away from each area of the EUT determined to be a source of emissions at the specified measurement distance, while keeping the measurement antenna aimed at the source of emissions at each frequency of significant emissions, with polarization oriented for maximum response. The measurement antenna may have to be higher or lower than the EUT, depending on the radiation pattern of the emission and staying aimed at the emission source for receiving the maximum signal. The final measurement antenna elevation shall be that which maximizes the emissions. The measurement antenna elevation for maximum emissions shall be restricted to a range of heights of from 1 m to 4 m above the ground or reference ground plane. e. The initial step in collecting conducted emission data is a spectrum analyzer peak detector mode pre-scanning the measurement frequency range. Significant peaks are then marked and then Quasi Peak detector mode re-measured. f. If the Peak Mode measured value compliance with and lower than Quasi Peak Mode Limit, the EUT shall be deemed to meet QP Limits and then no additional QP Mode measurement performed. g. For the actual test configuration, please refer to the related Item EUT Test Photos. Note:
Both horizontal and vertical antenna polarities were tested and performed pretest to three orthogonal axis. The worst case emissions were reported Version.1.2 Page 20 of 73 Report No.:
S19071003003001 During the radiated emission test, the Spectrum Analyzer was set with the following configurations:
Frequency Band (MHz) Function Resolution bandwidth Video Bandwidth 30 to 1000 Above 1000 QP Peak Average 120 kHz 1 MHz 1 MHz 300 kHz 1 MHz 10 Hz Note: for the frequency ranges below 30 MHz, a narrower RBW is used for these ranges but the measured value should add a RBW correction factor (RBWCF) where RBWCF [dB] =10*lg(100 [kHz]/narrower RBW
[kHz]). , the narrower RBW is 1 kHz and RBWCF is 20 dB for the frequency 9 kHz to 150 kHz, and the narrower RBW is 10 kHz and RBWCF is 10 dB for the frequency 150 kHz to 30 MHz. 7.2.6 Test Results n Spurious Emission below 30MHz (9KHz to 30MHz) EUT:
Temperature:
Test Mode:
HELM True Wireless 5.0 20 Mode2/Mode3/Mode4 Test By:
Model No.:
Relative Humidity:
Ant.Pol. Emission Level(dBuV/m) Freq.
(MHz)
--
H/V
--
PK
--
AV
--
HTW-500B 48%
Estelle Chen Limit 3m(dBuV/m) PK
--
AV
--
Over(dB) PK
--
AV
--
Note: the amplitude of spurious emission that is attenuated by more than 20dB below the permissible limit has no need to be reported. Distance extrapolation factor =20log (Specific distance/ test distance) (dB);
Limit line=Specific limits (dBuV) + distance extrapolation factor Version.1.2 Page 21 of 73 Report No.:
S19071003003001 n Spurious Emission below 1GHz (30MHz to 1GHz) All the modulation modes have been tested, and the worst result was report as below:
HTW-500B 48%
Mode 1 HELM True Wireless 5.0 Model Name 20 1010hPa DC 3.7V(Left) EUT Temperature Pressure Test Voltage Relative Humidity Test Mode Polar
(H/V) V V V V V V Frequency
(MHz) 30.5306 36.8953 74.6569 134.0882 148.9625 234.1684 Meter Reading
(dBuV) 43.30 41.39 46.45 47.91 44.11 43.35 Factor
(dB)
-20.84
-24.47
-32.08
-26.40
-27.50
-27.38 Emission Level
(dBuV/m) 22.46 16.92 14.37 21.51 16.61 15.97 Limits Margin
(dBuV/m) 40.00 40.00 40.00 43.50 43.50 46.00
(dB)
-17.54
-23.08
-25.63
-21.99
-26.89
-30.03 Remark QP QP QP QP QP QP Remark:
Absolute Level= ReadingLevel+ Factor, Margin= Absolute Level - Limit Version.1.2 Page 22 of 73 Report No.:
S19071003003001 Polar
(H/V) H H H H H H Frequency
(MHz) 30.0000 37.2855 74.1351 82.9385 111.7380 155.3644 Meter Reading
(dBuV) 44.34 44.20 52.32 52.61 46.28 45.84 Factor
(dB)
-20.50
-24.63
-32.16
-30.61
-26.46
-27.88 Emission Level
(dBuV/m) 23.84 19.57 20.16 22.00 19.82 17.96 Limits Margin
(dBuV/m) 40.00 40.00 40.00 40.00 43.50 43.50
(dB)
-16.16
-20.43
-19.84
-18.00
-23.68
-25.54 Remark:
Absolute Level= ReadingLevel+ Factor, Margin= Absolute Level - Limit Remark QP QP QP QP QP QP Version.1.2 Page 23 of 73 Report No.:
S19071003003001 EUT Temperature Pressure Test Voltage HELM True Wireless 5.0 Model Name 20 1010hPa DC 3.7V(Right) Relative Humidity Test Mode HTW-500B 48%
Mode 1 Polar
(H/V) V V V V V V Frequency
(MHz) 37.1550 51.3005 190.4050 202.8103 625.0779 750.1083 Meter Reading
(dBuV) 7.67 9.00 18.64 16.49 5.85 5.67
(dB) 17.89 13.29 12.81 13.84 20.09 22.41 Factor Emission Level Limits Margin
(dBuV/m)
(dBuV/m) 25.56 22.29 31.45 30.33 25.94 28.08 40.00 40.00 43.50 43.50 46.00 46.00
(dB)
-14.44
-17.71
-12.05
-13.17
-20.06
-17.92 Remark:
Absolute Level= ReadingLevel+ Factor, Margin= Absolute Level - Limit Remark QP QP QP QP QP QP Version.1.2 Page 24 of 73 Report No.:
S19071003003001 Polar
(H/V) H H H H H H Frequency
(MHz) 30.8535 56.7917 144.3348 194.4534 287.9904 878.3214 Meter Reading
(dBuV) 5.19 5.46 5.06 9.74 10.42 5.50
(dB) 20.84 11.99 11.35 13.63 14.05 25.92 Factor Emission Level Limits Margin
(dBuV/m)
(dBuV/m) 26.03 17.45 16.41 23.37 24.47 31.42 40.00 40.00 43.50 43.50 46.00 46.00
(dB)
-13.97
-22.55
-27.09
-20.13
-21.53
-14.58 Remark:
Absolute Level= ReadingLevel+ Factor, Margin= Absolute Level - Limit Remark QP QP QP QP QP QP Version.1.2 Page 25 of 73 Report No.:
S19071003003001 HELM True Wireless 5.0 20 Mode2/Mode3/Mode4
(Left) n Spurious Emission Above 1GHz (1GHz to 25GHz) EUT:
Temperature:
Test Mode:
All the modulation modes have been tested, and the worst result was report as below:
Note: (1) All Readings are Peak Value (VBW=3MHz) and AV Value (VBW=10Hz).
(2) Emission Level= Antenna Factor + Cable Loss + Read Level - Preamp Factor
(3)All other emissions more than 20dB below the limit. Model No.:
Relative Humidity:
Test By:
HTW-500B 48%
Estelle Chen Margin
(dB)
-15.63
-17.42
-15.72
-13.03
-17.53
-15.01
-14.91
-14.71
-23.74
-18.84
-24.74
-18.86
-20.51
-15.64
-18.32
-14.66
-23.51
-19.96
-22.74
-18.67
-18.53
-14.98
-20.41
-15.44 Remark Comment Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Vertical Vertical Vertical Vertical Horizontal Horizontal Horizontal Horizontal Vertical Vertical Vertical Vertical Horizontal Horizontal Horizontal Horizontal Vertical Vertical Vertical Vertical Horizontal Horizontal Horizontal Horizontal Frequency Read Level
(dBV)
(MHz) Cable loss
(dB) 4803 4803 7206 7206 4804 4804 7206 7206 4883 4883 7323 7323 4882 4882 7324 7324 61.87 40.08 60.13 42.82 60.01 42.53 60.86 41.06 61.86 42.46 59.77 42.68 61.31 42.65 62.18 42.85 5.21 5.21 6.48 6.48 5.21 5.21 6.48 6.48 5.21 5.21 7.10 7.10 5.21 5.21 7.10 7.10 Level Limits Emission
(dBV/m)(dB V/m) Preamp Factor
(dB) 44.30 44.30 44.60 44.60 44.30 44.30 44.52 44.52 74.00 54.00 74.00 54.00 74.00 54.00 74.00 54.00 58.37 36.58 58.28 40.97 56.47 38.99 59.09 39.29 Antenna Factor dB/m Low Channel (2402 MHz)(GFSK)--Above 1G 35.59 35.59 36.27 36.27 35.55 35.55 36.27 36.27 Mid Channel (2441 MHz)(GFSK)--Above 1G 35.66 35.66 36.50 36.50 35.66 35.66 36.50 36.50 50.26 35.16 49.26 35.14 53.49 38.36 55.68 39.34 74.00 54.00 74.00 54.00 74.00 54.00 74.00 54.00 44.20 44.20 44.43 44.43 44.20 44.20 44.43 44.43 High Channel (2480 MHz)(GFSK)-- Above 1G 4960 4960 7440 7440 4961 4961 7440 7440 60.95 40.11 60.82 42.39 61.23 41.03 60.63 42.66 5.21 5.21 7.10 7.10 5.21 5.21 7.10 7.10 35.52 35.52 36.53 36.53 35.52 35.52 36.53 36.53 44.21 44.21 44.60 44.60 44.21 44.21 44.60 44.60 50.49 34.04 51.26 35.33 55.47 39.02 53.59 38.56 74.00 54.00 74.00 54.00 74.00 54.00 74.00 54.00 Version.1.2 Page 26 of 73 Report No.:
S19071003003001 EUT:
Temperature:
Test Mode:
All the modulation modes have been tested, and the worst result was report as below:
Frequenc HELM True Wireless 5.0 20 Mode2/Mode3/Mode4
(Right) Model No.:
Relative Humidity:
Test By:
HTW-500B 48%
Estelle Chen Emission y
(MHz) 4804 4804 7206 7206 4804 4804 7206 7206 4882 4882 7323 7323 4882 4882 7323 7323 4960 4960 7440 7440 4960 4960 7440 7440 Read Level
(dBV) Cable loss
(dB) 53.31 36.16 53.18 35.87 54.93 38.59 54.46 36.92 56.07 38.36 52.29 35.96 56.69 36.16 52.48 36.87 5.21 5.21 6.48 6.48 5.21 5.21 6.48 6.48 5.21 5.21 7.10 7.10 5.21 5.21 7.10 7.10 55.37 38.51 54.54 38.42 57.50 40.01 55.02 37.32 5.21 5.21 7.10 7.10 5.21 5.21 7.10 7.10 Level Limits
(dBV/m)(dB V/m) Preamp Factor
(dB) 74.00 54.00 74.00 54.00 74.00 54.00 74.00 54.00 44.30 44.30 44.60 44.60 44.30 44.30 44.52 44.52 49.81 32.66 51.33 34.02 51.39 35.05 52.69 35.15 Antenna Factor dB/m Low Channel (2402 MHz)(GFSK)--Above 1G 35.59 35.59 36.27 36.27 35.55 35.55 36.27 36.27 Mid Channel (2441 MHz)(GFSK)--Above 1G 35.66 35.66 36.50 36.50 35.66 35.66 36.50 36.50 High Channel (2480 MHz)(GFSK)-- Above 1G 35.52 35.52 36.53 36.53 35.52 35.52 36.53 36.53 52.74 35.03 51.46 35.13 53.36 32.83 51.65 36.04 51.89 35.03 53.57 37.45 54.02 36.53 54.05 36.35 44.20 44.20 44.43 44.43 44.20 44.20 44.43 44.43 74.00 54.00 74.00 54.00 74.00 54.00 74.00 54.00 44.21 44.21 44.60 44.60 44.21 44.21 44.60 44.60 74.00 54.00 74.00 54.00 74.00 54.00 74.00 54.00 Margin Remark
(dB)
-24.19
-21.34
-22.67
-19.98
-22.61
-18.95
-21.31
-18.85
-21.26
-18.97
-22.54
-18.87
-20.64
-21.17
-22.35
-17.96 Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV
-22.11
-18.97
-20.43
-16.55
-19.98
-17.47
-19.95
-17.65 Pk AV Pk AV Pk AV Pk AV Note: (1) All Readings are Peak Value (VBW=3MHz) and AV Value (VBW=10Hz).
(2) Emission Level= Antenna Factor + Cable Loss + Read Level - Preamp Factor
(3)All other emissions more than 20dB below the limit. Comment Vertical Vertical Vertical Vertical Horizontal Horizontal Horizontal Horizontal Vertical Vertical Vertical Vertical Horizontal Horizontal Horizontal Horizontal Vertical Vertical Vertical Vertical Horizontal Horizontal Horizontal Horizontal Version.1.2 Page 27 of 73 Report No.:
S19071003003001 n Spurious Emission in Band edge EUT:
Temperature:
Test Mode:
All the modulation modes have been tested, and the worst result was report as below:
Frequenc HELM True Wireless 5.0 20 Mode2/ Mode4 (Left) Test By:
HTW-500B 48%
Estelle Chen Model No.:
Relative Humidity:
Emission Meter Reading
(dBV) Cable Loss
(dB) Antenna Factor dB/m Preamp Factor
(dB)
(dBV/m)(dB V/m) 1Mbps(GFSK)-hopping Limits Detector Margin
(dB) y
(MHz) 2343.70 2343.70 2343.70 2343.70 2390.00 2390.00 2390.00 2390.00 2483.50 2483.50 2483.50 2483.50 2343.70 2343.70 2343.70 2343.70 2390.00 2390.00 2390.00 2390.00 2483.50 2483.50 2483.50 2483.50 61.88 41.85 59.91 40.42 62.17 41.41 60.76 41.23 61.03 40.87 61.70 40.06 61.79 39.65 61.79 40.07 62.07 41.60 62.25 39.75 62.50 42.30 61.37 40.08 2.97 2.97 2.97 2.97 3.14 3.14 3.14 3.14 3.58 3.58 3.58 3.58 2.97 2.97 2.97 2.97 3.14 3.14 3.14 3.14 3.58 3.58 3.58 3.58 Level 48.85 28.82 46.88 27.39 48.72 27.96 47.31 27.78 48.31 28.15 48.98 27.34 27.80 27.80 27.80 27.80 27.21 27.21 27.21 27.21 27.70 27.70 27.70 27.70 43.80 43.80 43.80 43.80 43.80 43.80 43.80 43.80 44.00 44.00 44.00 44.00 1Mbps(GFSK)- Non-hopping 27.80 27.80 27.80 27.80 27.21 27.21 27.21 27.21 27.70 27.70 27.70 27.70 43.80 43.80 43.80 43.80 43.80 43.80 43.80 43.80 44.00 44.00 44.00 44.00 48.76 26.62 48.76 27.04 48.62 28.15 48.80 26.30 49.78 29.58 48.65 27.36 74 54 74 54 74 54 74 54 74 54 74 54 74 54 74 54 74 54 74 54 74 54 74 54
-25.15
-25.18
-27.12
-26.61
-25.28
-26.04
-26.69
-26.22
-25.69
-25.85
-25.02
-26.66
-25.24
-27.38
-25.24
-26.96
-25.38
-25.85
-25.20
-27.70
-24.22
-24.42
-25.35
-26.64 Type Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Comment Horizontal Horizontal Vertical Vertical Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Horizontal Horizontal Vertical Vertical Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Note: (1) All other emissions more than 20dB below the limit. Version.1.2 Page 28 of 73 Report No.:
S19071003003001 EUT:
Temperature:
Test Mode:
All the modulation modes have been tested, and the worst result was report as below:
Frequenc HELM True Wireless 5.0 20 Mode2/ Mode4 (Right) Test By:
HTW-500B 48%
Estelle Chen Model No.:
Relative Humidity:
Emission y
(MHz) Meter Reading
(dBV) Cable Loss
(dB) Antenna Factor dB/m Preamp Factor
(dB) Limits Detector Margin
(dB)
(dBV/m)(dB V/m) 1Mbps (GFSK)-hopping 2310.00 2310.00 2310.00 2310.00 2390.00 2390.00 2390.00 2390.00 2483.50 2483.50 2483.50 2483.50 58.08 40.39 57.06 42.41 57.60 44.80 59.81 43.84 64.21 47.87 61.08 46.76 2.97 2.97 2.97 2.97 3.14 3.14 3.14 3.14 3.58 3.58 3.58 3.58 2310.00 2310.00 2310.00 2310.00 2390.00 2390.00 2390.00 2390.00 2483.50 2483.50 2483.50 2483.50 58.08 42.52 57.07 44.68 59.61 43.81 57.04 40.80 59.77 46.74 62.21 44.91 2.97 2.97 2.97 2.97 3.14 3.14 3.14 3.14 3.58 3.58 3.58 3.58 27.80 27.80 27.80 27.80 27.21 27.21 27.21 27.21 27.70 27.70 27.70 27.70 27.80 27.80 27.80 27.80 27.21 27.21 27.21 27.21 27.70 27.70 27.70 27.70 43.80 43.80 43.80 43.80 43.80 43.80 43.80 43.80 44.00 44.00 44.00 44.00 43.80 43.80 43.80 43.80 43.80 43.80 43.80 43.80 44.00 44.00 44.00 44.00 Note: (1) All other emissions more than 20dB below the limit. Type Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Comment Horizontal Horizontal Vertical Vertical Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Horizontal Horizontal Vertical Vertical Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal 74 54 74 54 74 54 74 54 74 54 74 54 74 54 74 54 74 54 74 54 74 54 74 54
-28.95
-26.64
-29.97
-24.62
-29.85
-22.65
-27.64
-23.61
-22.51
-18.85
-25.64
-19.96
-28.95
-24.51
-29.96
-22.35
-27.84
-23.64
-30.41
-26.65
-26.95
-19.98
-24.51
-21.81 Level 45.05 27.36 44.03 29.38 44.15 31.35 46.36 30.39 51.49 35.15 48.36 34.04 45.05 29.49 44.04 31.65 46.16 30.36 43.59 27.35 47.05 34.02 49.49 32.19 1Mbps(GFSK)- Non-hopping Version.1.2 Page 29 of 73 Report No.:
S19071003003001 y a
(dB)
(MHz) Antenn
(dBV) Emission Frequenc Cable Loss Readin g Level Preamp Factor Model No.:
Relative Humidity:
HTW-500B 48%
Estelle Chen HELM True Wireless 5.0 20 Mode2/ Mode4 (Left) Test By:
n Spurious Emission in Restricted Band 3260MMHz-18000MHz EUT:
Temperature:
Test Mode:
All the modulation modes have been tested, and the worst result was report as below:
Limits Margin Detecto
(dB V/m) 74 54 74 54 74 54 74 54 74 54 74 54 Level
(dB V/m) 50.82 40.05 48.63 38.99 50.60 38.71 49.41 39.22 51.10 41.53 52.57 40.99
-23.18
-13.95
-25.37
-15.01
-23.40
-15.29
-24.59
-14.78
-22.90
-12.47
-21.43
-13.01 3260 3260 3260 3260 3332 3332 3332 3332 17797 17797 17788 17788 61.91 51.14 59.72 50.08 60.87 48.98 59.68 49.49 39.66 30.09 41.67 30.09 4.04 4.04 4.04 4.04 4.26 4.26 4.26 4.26 10.99 10.99 11.81 11.81 29.57 29.57 29.57 29.57 29.87 29.87 29.87 29.87 43.95 43.95 43.69 43.69 44.70 44.70 44.70 44.70 44.40 44.40 44.40 44.40 43.50 43.50 44.60 44.60 Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV dB/m Type
(dB)
(dB) r Comment Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Note: (1) All other emissions more than 20dB below the limit. Version.1.2 Page 30 of 73 Report No.:
S19071003003001 EUT:
Temperature:
Test Mode:
All the modulation modes have been tested, and the worst result was report as below:
HELM True Wireless 5.0 20 Mode2/ Mode4 (Right) Test By:
HTW-500B 48%
Estelle Chen Model No.:
Relative Humidity:
Frequenc y
(MHz) Readin g Level
(dBV) Cable Loss
(dB) Antenn a dB/m Preamp Factor
(dB) 3260 3260 3260 3260 3332 3332 3332 3332 17797 17797 17788 17788 59.86 43.51 60.22 49.97 60.24 44.47 60.29 43.56 44.82 30.13 48.95 29.98 4.04 4.04 4.04 4.04 4.26 4.26 4.26 4.26 10.99 10.99 11.81 11.81 29.57 29.57 29.57 29.57 29.87 29.87 29.87 29.87 43.95 43.95 43.69 43.69 44.70 44.70 44.70 44.70 44.40 44.40 44.40 44.40 43.50 43.50 44.60 44.60 Emission Level
(dB V/m) 48.77 32.42 49.13 38.88 49.97 34.20 50.02 33.29 56.26 41.57 59.85 40.88
(dB) LimitsMargin
(dB V/m) 74 54 74 54 74 54 74 54 74 54 74 54
-25.23
-21.58
-24.87
-15.12
-24.03
-19.80
-23.98
-20.71
-17.74
-12.43
-14.15
-13.12 Detect or Type Pk AV Pk AV Pk AV Pk AV Pk AV Pk AV Comment Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Note: (1) All other emissions more than 20dB below the limit. Version.1.2 Page 31 of 73 7.3 NUMBER OF HOPPING CHANNEL 7.3.1 Applicable Standard Report No.:
S19071003003001 According to FCC Part 15.247(a)(1) (iii)and ANSI C63.10-2013 7.3.2 Conformance Limit Frequency hopping systems in the 2400-2483.5MHz band shall use at least 15 channels. 7.3.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.3.4 Test Setup Please refer to Section 6.1 of this test report. 7.3.5 Test Procedure The testing follows ANSI C63.10-2013 clause 7.8.3 The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT must have its hopping function enabled. Use the following spectrum analyzer settings:
Span = the frequency band of operation RBW : To identify clearly the individual channels, set the RBW to less than 30% of the channel spacing or the 20 dB bandwidth, whichever is smaller. VBW RBW Sweep = auto Detector function = peak Trace = max hold 7.3.6 Test Results HELM True Wireless 5.0 20 Mode 5(1Mbps) Model No.:
Relative Humidity:
Test By:
HTW-500B 48%
Estelle Chen Number of Hopping Adaptive Frequency hopping
(Channel) 20 limit 15 Verdict Pass EUT:
Temperature:
Test Mode:
(Channel) 79 Version.1.2 Page 32 of 73 Report No.:
S19071003003001 Number of Hopping Channel Plot (Left) Number of Hopping Channel Plot (Right) Version.1.2 Page 33 of 73 7.4 HOPPING CHANNEL SEPARATION MEASUREMENT 7.4.1 Applicable Standard Report No.:
S19071003003001 According to FCC Part 15.247(a) (1) and ANSI C63.10-2013 7.4.2 Conformance Limit Frequency hopping systems operating in the 2400-2483.5MHz band shall have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20dB bandwidth of the hopping channel, whichever is greater. 7.4.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.4.4 Test Setup Please refer to Section 6.1 of this test report. 7.4.5 Test Procedure The testing follows ANSI C63.10-2013 clause 7.8.2 The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT was operating in controlled its channel. Use the following spectrum analyzer settings:
Span = Measurement Bandwidth or Channel Separation RBW: Start with the RBW set to approximately 30% of the channel spacing; adjust as necessary to best identify the center of each individual channel. VBW RBW Sweep = auto Detector function = peak Trace = max hold Version.1.2 Page 34 of 73 7.4.6 Test Results EUT:
Temperature:
Test Mode:
Modulation Mode GFSK Left
/4-DQPSK 8-DPSK Report No.:
S19071003003001 HELM True Wireless 5.0 20 Mode2/Mode3/Mode4 Test By:
Model No.:
Relative Humidity:
HTW-500B 48%
Estelle Chen Channel Number Channel Frequency
(MHz) 0 39 78 0 39 78 0 39 78 2402 2441 2480 2402 2441 2480 2402 2441 2480 Measured Channel Separation
(MHz) 0.9975 0.9975 1 1 1 1 1.0025 0.9975 0.9975 Modulation Mode Channel Number Channel Frequency
(MHz) GFSK Right
/4-DQPSK 8-DPSK 0 39 78 0 39 78 0 39 78 2402 2441 2480 2402 2441 2480 2402 2441 2480 Measured Channel Separation
(MHz) 1 0.9975 1.0025 1.005 0.9975 0.995 1 1 1 Limit
(kHz)
>692.00
>691.33
>692.00
>898.67
>898.67
>899.33
>913.33
>913.33
>914.00 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW Limit
(kHz)
>682.67
>684.67
>680.00
>905.33
>910.67
>830.67
>910.67
>912.00
>906.67 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW 2/3 of 20dB BW Verdict PASS PASS PASS PASS PASS PASS PASS PASS PASS Verdict PASS PASS PASS PASS PASS PASS PASS PASS PASS Version.1.2 Page 35 of 73 Report No.:
S19071003003001
(1Mbps) Channel Separation plot on channel 00-01
(2Mbps) Channel Separation plot on channel 00-01 Test Plot (Left)
(1Mbps) Channel Separation plot on channel 39-40
(2Mbps) Channel Separation plot on channel 39-40
(1Mbps) Channel Separation plot on channel 77-78
(2Mbps) Channel Separation plot on channel 77-78 Version.1.2 Page 36 of 73 Report No.:
Test Plot (Left) S19071003003001
(3Mbps) Channel Separation plot on channel 00-01
(3Mbps) Channel Separation plot on channel 39-40
(3Mbps) Channel Separation plot on channel 77-78 Version.1.2 Page 37 of 73 Report No.:
S19071003003001 Test Plot (Right)
(1Mbps) Channel Separation plot on channel 00-01
(2Mbps) Channel Separation plot on channel 00-01
(1Mbps) Channel Separation plot on channel 39-40
(2Mbps) Channel Separation plot on channel 39-40
(1Mbps) Channel Separation plot on channel 77-78
(2Mbps) Channel Separation plot on channel 77-78 Version.1.2 Page 38 of 73 Report No.:
S19071003003001
(3Mbps) Channel Separation plot on channel 00-01 Test Plot (Right)
(3Mbps) Channel Separation plot on channel 39-40
(3Mbps) Channel Separation plot on channel 77-78 Version.1.2 Page 39 of 73 7.5 AVERAGE TIME OF OCCUPANCY (DWELL TIME) 7.5.1 Applicable Standard Report No.:
S19071003003001 According to FCC Part 15.247(a) (1) (iii) and ANSI C63.10-2013 7.5.2 Conformance Limit The average time of occupancy on any channel shall not be greater than 0.4s within a period of 0.4s multiplied by the number of hopping channels employed. 7.5.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.5.4 Test Setup Please refer to Section 6.1 of this test report. 7.5.5 Test Procedure The testing follows ANSI C63.10-2013 clause 7.8.4 The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT must have its hopping function enabled. Use the following spectrum analyzer settings:
Span = zero span, centered on a hopping channel RBW 1MHz VBW RBW Sweep = as necessary to capture the entire dwell time per hopping channel Detector function = peak Trace = max hold Measure the maximum time duration of one single pulse. Set the EUT for DH5, DH3 and DH1 packet transmitting. Measure the maximum time duration of one single pulse. Version.1.2 Page 40 of 73 7.5.6 Test Results EUT:
Temperature:
Test Mode:
Left:
Report No.:
S19071003003001 HELM True Wireless 5.0 20 Mode2/Mode3/Mode4 Test By:
Model No.:
Relative Humidity:
HTW-500B 48%
Estelle Chen Modulation Mode Channel Number Packet type Mode GFSK
/4-DQPSK 8DPSK 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 DH1 DH3 DH5 2DH1 2DH3 2DH5 3DH1 3DH3 3DH5 Normal AFH Normal AFH Normal AFH Normal AFH Normal AFH Normal AFH Normal AFH Normal AFH Normal AFH Hops Over Occupancy Time
(ms) 320 160 160 80 106.67 53.33 320 160 160 80 106.67 53.33 320 160 160 80 106.67 53.33 Pulse width dwell time (ms)
(ms) 0.4064 0.4064 1.659 1.659 2.904 2.904 0.4149 0.4149 1.659 1.659 2.904 2.904 0.4233 0.4233 1.668 1.668 2.938 2.938 130.048 65.024 265.440 132.720 309.770 154.870 132.768 66.384 265.440 132.720 309.770 154.870 135.456 67.728 266.880 133.440 313.396 156.684 Limit
(ms)
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400 Verdict PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS Version.1.2 Page 41 of 73 Right:
Report No.:
S19071003003001 Modulation Mode Channel Number Packet type Mode Pulse width dwell time (ms) Limit Verdict GFSK
/4-DQPSK 8DPSK 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 DH1 DH3 DH5 2DH1 2DH3 2DH5 3DH1 3DH3 3DH5 Normal AFH Normal AFH Normal AFH Normal AFH Normal AFH Normal AFH Normal AFH Normal AFH Normal AFH Hops Over Occupancy Time
(ms) 320 160 160 80 106.67 53.33 320 160 160 80 106.67 53.33 320 160 160 80 106.67 53.33
(ms) 0.4149 0.4149 1.651 1.651 2.904 2.904 0.4233 0.4233 1.659 1.659 2.904 2.904 0.4064 0.4064 1.659 1.659 2.921 2.921 132.768 66.384 264.160 132.080 309.770 154.870 135.456 67.728 265.440 132.720 309.770 154.870 130.048 65.024 265.440 132.720 311.583 155.777
(ms)
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400
<400 PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS Note:
A Period Time = (channel number)*0.4 DH1 Time Slot: Reading * (1600/2)*31.6/(channel number) DH3 Time Slot: Reading * (1600/4)*31.6/(channel number) DH5 Time Slot: Reading * (1600/6)*31.6/(channel number) For Example:
1. In normal mode, hopping rate is 1600 hops/s with 6 slots in 79 hopping channels. With channel hopping rate (1600 / 6 / 79) in Occupancy Time Limit (0.4 x 79) (s), Hops Over Occupancy Time comes to (1600 / 6 / 79) x (0.4 x 79) = 106.67 hops. 2. In AFH mode, hopping rate is 800 hops/s with 6 slots in 20 hopping channels. With channel hopping rate (800 / 6 / 20) in Occupancy Time Limit (0.4 x 20) (s), Hops Over Occupancy Time comes to (800 / 6 / 20) x (0.4 x 20) = 53.33 hops. 3. Dwell Time(s) = Hops Over Occupancy Time (hops) x Package Transfer Time Version.1.2 Page 42 of 73 Report No.:
S19071003003001 Test Plot (Left) Package Transfer Time Plot CH39-DH1 Package Transfer Time Plot CH39-2DH1 Package Transfer Time Plot CH39-DH3 Package Transfer Time Plot CH39-DH5 Package Transfer Time Plot CH39-2DH3 Package Transfer Time Plot CH39-2DH5 Version.1.2 Page 43 of 73 Report No.:
S19071003003001 Package Transfer Time Plot CH39-3DH1 Test Plot (Left) Package Transfer Time Plot CH39-3DH3 Package Transfer Time Plot CH39-3DH5 Version.1.2 Page 44 of 73 Report No.:
S19071003003001 Test Plot (Right) Package Transfer Time Plot CH39-DH1 Package Transfer Time Plot CH39-2DH1 Package Transfer Time Plot CH39-DH3 Package Transfer Time Plot CH39-DH5 Package Transfer Time Plot CH39-2DH3 Package Transfer Time Plot CH39-2DH5 Version.1.2 Page 45 of 73 Report No.:
Test Plot (Right) S19071003003001 Package Transfer Time Plot CH39-3DH1 Package Transfer Time Plot CH39-3DH3 Package Transfer Time Plot CH39-3DH5 Version.1.2 Page 46 of 73 Report No.:
S19071003003001 7.6 20DB BANDWIDTH TEST 7.6.1 Applicable Standard According to FCC Part 15.247(a)(1) and ANSI C63.10-2013 7.6.2 Conformance Limit No limit requirement. 7.6.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.6.4 Test Setup Please refer to Section 6.1 of this test report. 7.6.5 Test Procedure The testing follows ANSI C63.10-2013 clause 6.9.2 The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT was operating in controlled its channel. Use the following spectrum analyzer settings:
Span = approximately 2 to 3 times the 20 dB bandwidth, centered on a hopping channel RBW 1% of the 20 dB bandwidth VBW RBW Sweep = auto Detector function = peak Trace = max hold Version.1.2 Page 47 of 73 7.6.6 Test Results EUT:
Temperature:
Test Mode:
Left:
Test Channel 0 39 78 0 39 78 0 39 78 Right:
Report No.:
S19071003003001 HELM True Wireless 5.0 20 Mode2/Mode3/Mode4 Test By:
Model No.:
Relative Humidity:
HTW-500B 48%
Estelle Chen Frequency
(MHz) Measurement Bandwidth (KHz) 2402 2441 2480 2402 2441 2480 2402 2441 2480 1Mbps 1038 1037 1038 2Mbps 1348 1348 1349 3Mbps 1370 1370 1371 Test Channel Frequency Measurement Bandwidth (KHz) 1Mbps 0 39 78 2Mbps 0 39 78 3Mbps 0 39 78
(MHz) 2402 2441 2480 2402 2441 2480 2402 2441 2480 Note: N/A (Not Applicable) 1024 1027 1020 1358 1366 1246 1366 1368 1360 Version.1.2 Page 48 of 73 Limit
(kHz) N/A N/A N/A N/A N/A N/A N/A N/A N/A Limit
(kHz) N/A N/A N/A N/A N/A N/A N/A N/A N/A Verdict PASS PASS PASS PASS PASS PASS PASS PASS PASS Verdict PASS PASS PASS PASS PASS PASS PASS PASS PASS Report No.:
S19071003003001 Test Plot (Left) 20dB Bandwidth plot on channel 00 (1Mbps) 20dB Bandwidth plot on channel 00 (2Mbps) 20dB Bandwidth plot on channel 39 (1Mbps) 20dB Bandwidth plot on channel 78 (1Mbps) 20dB Bandwidth plot on channel 39 (2Mbps) 20dB Bandwidth plot on channel 78 (2Mbps) Version.1.2 Page 49 of 73 Report No.:
S19071003003001 20dB Bandwidth plot on channel 00 (3Mbps) Test Plot (Left) 20dB Bandwidth plot on channel 39 (3Mbps) 20dB Bandwidth plot on channel 78 (3Mbps) Version.1.2 Page 50 of 73 Report No.:
S19071003003001 Test Plot (Right) 20dB Bandwidth plot on channel 00 (1Mbps) 20dB Bandwidth plot on channel 00 (2Mbps) 20dB Bandwidth plot on channel 39 (2Mbps) 20dB Bandwidth plot on channel 39 (1Mbps) 20dB Bandwidth plot on channel 78 (1Mbps) 20dB Bandwidth plot on channel 78 (2Mbps) Version.1.2 Page 51 of 73 Report No.:
Test Plot (Right) S19071003003001 20dB Bandwidth plot on channel 00 (3Mbps) 20dB Bandwidth plot on channel 39 (3Mbps) 20dB Bandwidth plot on channel 78 (3Mbps) Version.1.2 Page 52 of 73 7.7 PEAK OUTPUT POWER 7.7.1 Applicable Standard Report No.:
S19071003003001 According to FCC Part 15.247(b) (1) and ANSI C63.10-2013 7.7.2 Conformance Limit The maximum peak conducted output power of the intentional radiator shall not exceed the following: (1) For frequency hopping systems operating in the 2400-2483.5 MHz band employing at least 75 non-overlapping hopping channels, and all frequency hopping systems in the 5725-5850 MHz band: 1 watt. For all other frequency hopping systems in the 2400-2483.5 MHz band 0.125 watts. 7.7.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.7.4 Test Setup Please refer to Section 6.1 of this test report. 7.7.5 Test Procedure The testing follows ANSI C63.10-2013 clause 7.8.5. The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT was operating in controlled its channel. Use the following spectrum analyzer settings:
Span = approximately 5 times the 20 dB bandwidth, centered on a hopping channel RBW the 20 dB bandwidth of the emission being measured VBW RBW Sweep = auto Detector function = peak Trace = max hold Version.1.2 Page 53 of 73 7.7.6 Test Results EUT:
Temperature:
Test Mode:
Left:
Report No.:
S19071003003001 HELM True Wireless 5.0 20 Mode2/Mode3/Mode4 Test By:
Model No.:
Relative Humidity:
HTW-500B 48%
Estelle Chen Test Channel Frequency
(MHz) Power Setting Peak Output Power 1Mbps 0 39 78 0 39 78 0 39 78 2402 2441 2480 2402 2441 2480 2402 2441 2480 Default Default Default 2Mbps Default Default Default 3Mbps Default Default Default Right:
Test Channel Frequency
(MHz) Power Setting Peak Output Power 1Mbps 0 39 78 0 39 78 0 39 78 2402 2441 2480 2402 2441 2480 2402 2441 2480 Default Default Default 2Mbps Default Default Default 3Mbps Default Default Default
(dBm)
-0.43 0.31 0.341 1.53 2.47 2.75 1.82 2.63 2.82
(dBm)
-0.67 0.3
-0.08 1.96 2.49 2.21 2.14 2.72 2.41 LIMIT
(dBm) 20.97 20.97 20.97 20.97 20.97 20.97 20.97 20.97 20.97 LIMIT
(dBm) 20.97 20.97 20.97 20.97 20.97 20.97 20.97 20.97 20.97 Verdict PASS PASS PASS PASS PASS PASS PASS PASS PASS Verdict PASS PASS PASS PASS PASS PASS PASS PASS PASS Version.1.2 Page 54 of 73 Report No.:
S19071003003001 Peak output Power plot on channel 00 (1Mbps) Peak output Power plot on channel 00 (2Mbps) Test Plot (Left) Peak output Power plot on channel 39 (1Mbps) Peak output Power plot on channel 39 (2Mbps) Peak output Power plot on channel 78 (1Mbps) Peak output Power plot on channel 78 (2Mbps) Version.1.2 Page 55 of 73 Report No.:
S19071003003001 Peak output Power plot on channel 00 (3Mbps) Test Plot (Left) Peak output Power plot on channel 39 (3Mbps) Peak output Power plot on channel 78 (3Mbps) Version.1.2 Page 56 of 73 Report No.:
S19071003003001 Peak output Power plot on channel 00 (1Mbps) Peak output Power plot on channel 00 (2Mbps) Test Plot (Right) Peak output Power plot on channel 39 (1Mbps) Peak output Power plot on channel 39 (2Mbps) Peak output Power plot on channel 78 (1Mbps) Peak output Power plot on channel 78 (2Mbps) Version.1.2 Page 57 of 73 Report No.:
S19071003003001 Peak output Power plot on channel 00 (3Mbps) Test Plot (Right) Peak output Power plot on channel 39 (3Mbps) Peak output Power plot on channel 78 (3Mbps) Version.1.2 Page 58 of 73 7.8 CONDUCTED BAND EDGE MEASUREMENT 7.8.1 Applicable Standard Report No.:
S19071003003001 According to FCC Part 15.247(d) and ANSI C63.10-2013 7.8.2 Conformance Limit In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement, provided the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the general limits specified in emissions which fall in the restricted bands, as defined in 15.205(a), must also comply with the radiated emission limits specified in 15.209(a) (see 15.205(c)). 7.8.3 Measuring Instruments 15.209(a) is not required. In addition, radiated The Measuring equipment is listed in the section 6.3 of this test report. 7.8.4 Test Setup Please refer to Section 6.1 of this test report. 7.8.5 Test Procedure The testing follows ANSI C63.10-2013 clause 7.8.6. The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT must have its hopping function enabled. Use the following spectrum analyzer settings:
Span = approximately 5 times the 20 dB bandwidth, centered on a hopping channel RBW = 100KHz VBW = 300KHz Band edge emissions must be at least 20 dB down from the highest emission level within the authorized band as measured with a 100kHz RBW. The attenuation shall be 30 dB instead of 20 dB when RMS conducted output power procedure is used. Measure the highest amplitude appearing on spectral display and set it as a reference level. Plot the graph with marking the highest point and edge frequency. Repeat above procedures until all measured frequencies were complete. Version.1.2 Page 59 of 73 7.8.6 Test Results EUT:
Temperature:
Test Mode:
Report No.:
S19071003003001 HELM True Wireless 5.0 20 Mode2 /Mode4/ Mode 5 HTW-500B Model No.:
Relative Humidity: 48%
Test By:
Estelle Chen GFSK: Band Edge-Low Channel GFSK: Band Edge-High Channel Test Plot (Left) GFSK: Band Edge-Low Channel (Hopping Mode) GFSK: Band Edge-High Channel (Hopping Mode) Version.1.2 Page 60 of 73 Report No.:
S19071003003001 Test Plot (Left)
/4-DQPSK: Band Edge-Low Channel
/4-DQPSK: Band Edge-High Channel
/4-DQPSK: Band Edge-Low Channel
(Hopping Mode)
/4-DQPSK: Band Edge-High Channel
(Hopping Mode) Version.1.2 Page 61 of 73 Report No.:
S19071003003001 Test Plot (Left) 8-DPSK: Band Edge-Low Channel 8-DPSK: Band Edge-High Channel 8-DPSK: Band Edge-High Channel (Hopping Mode) 8-DPSK: Band Edge-Low Channel
(Hopping Mode) Version.1.2 Page 62 of 73 Report No.:
S19071003003001 GFSK: Band Edge-Low Channel GFSK: Band Edge-High Channel Test Plot (Right) GFSK: Band Edge-Low Channel (Hopping Mode) GFSK: Band Edge-High Channel (Hopping Mode) Version.1.2 Page 63 of 73 Report No.:
S19071003003001 Test Plot (Right)
/4-DQPSK: Band Edge-Low Channel
/4-DQPSK: Band Edge-High Channel
/4-DQPSK: Band Edge-Low Channel
/4-DQPSK: Band Edge-High Channel
(Hopping Mode)
(Hopping Mode) Version.1.2 Page 64 of 73 Report No.:
S19071003003001 Test Plot (Right) 8-DPSK: Band Edge-Low Channel 8-DPSK: Band Edge-High Channel 8-DPSK: Band Edge-High Channel (Hopping Mode) 8-DPSK: Band Edge-Low Channel
(Hopping Mode) Version.1.2 Page 65 of 73 7.9 SPURIOUS RF CONDUCTED EMISSION 7.9.1 Applicable Standard Report No.:
S19071003003001 According to FCC Part 15.247(d) and ANSI C63.10-2013. 7.9.2 Conformance Limit In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement, provided the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the general limits specified in 15.209(a) is not required. In addition, radiated emissions which fall in the restricted bands, as defined in 15.205(a), must also comply with the radiated emission limits specified in 15.209(a) (see 15.205(c)). 7.9.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.9.4 Test Setup Please refer to Section 6.1 of this test report. 7.9.5 Test Procedure Establish an emission level by using the following procedure:
a) Set the center frequency and span to encompass frequency range to be measured. b) Set the RBW = 100 kHz. c) Set the VBW [3 RBW]. d) Detector = peak. e) Sweep time = auto couple. f) Trace mode = max hold. g) Allow trace to fully stabilize. h) Use the peak marker function to determine the maximum amplitude level. Then the limit shall be attenuated by at least 20 dB relative to the maximum amplitude level in 100 kHz. 7.9.6 Test Results Remark: The measurement frequency range is from 9 KHz to the 10th harmonic of the fundamental frequency. The lowest, middle and highest channels are tested to verify the spurious emissions and bandege measurement data. The worst mode on left is 8-DPSK mode, and on right is 8-DPSK mode, and the report only show the worst mode data. Version.1.2 Page 66 of 73 Report No.:
S19071003003001 Test Plot(8-DPSK)- (Left) 8-DPSK on channel 00 8-DPSK on channel 00 8-DPSK on channel 00 8-DPSK on channel 00 Version.1.2 Page 67 of 73 Report No.:
S19071003003001 8-DPSK on channel 39 8-DPSK on channel 39 Test Plot (Left) 8-DPSK on channel 39 8-DPSK on channel 39 Version.1.2 Page 68 of 73 Report No.:
S19071003003001 8-DPSK on channel 78 8-DPSK on channel 78 Test Plot (Left) 8-DPSK on channel 78 8-DPSK on channel 78 Version.1.2 Page 69 of 73 Report No.:
S19071003003001 Test Plot (8-DPSK)-(Right) 8-DPSK on channel 00 8-DPSK on channel 00 8-DPSK on channel 00 8-DPSK on channel 00 Version.1.2 Page 70 of 73 Report No.:
S19071003003001 8-DPSK on channel 39 8-DPSK on channel 39 Test Plot (Right) 8-DPSK on channel 39 8-DPSK on channel 39 Version.1.2 Page 71 of 73 Report No.:
S19071003003001 8-DPSK on channel 78 8-DPSK on channel 78 Test Plot (Right) 8-DPSK on channel 78 8-DPSK on channel 78 Version.1.2 Page 72 of 73 Report No.:
S19071003003001 7.10 ANTENNA APPLICATION 7.10.1 Antenna Requirement 15.203 requirement: For intentional device, according to 15.203: an intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible partyshall be used with the device. 7.10.2 Result The EUT antenna is permanent attached FPCB antenna (Gain: Right: 0.44dBi Left: 0.46dBi). It comply with the standard requirement. 7.11 TECHNICAL REQUIREMENT 7.11.1 Requirement 15.247 (g) Frequency hopping spread spectrum systems are not required to employ all available hopping channels during each transmission. However, the system, consisting of both the transmitter and the receiver, must be designed to comply with all of the regulations in this section should the transmitter be presented with a continuous data (or information) stream. In addition, a system employing short transmission bursts must comply with the definition of a frequency hopping system and must distribute its transmissions over the minimum number of hopping channels specified in this section. 15.247 (h) The incorporation of intelligence within a frequency hopping spread spectrum system that permits the system to recognize other users within the spectrum band so that it individually and independently chooses and adapts its hopsets to avoid hopping on occupied channels is permitted. The coordination of frequency hopping systems in any other manner for the express purpose of avoiding the simultaneous occupancy of individual hopping frequencies by multiple transmitters is not permitted. Note: Spread spectrum systems are sharing these bands on a noninterference basis with systems supporting critical Government requirements that have been allocated the usage of these bands, secondary only to ISM equipment operated under the provisions of part 18 of this chapter. Many of these Government systems are airborne radiolocation systems that emit a high EIRP which can cause interference to other users. Also, investigations of the effect of spread spectrum interference to U. S. Government operations in the 902-928 MHz band may require a future decrease in the power limits allowed for spread spectrum operation. 7.11.2 Result The EUT complies with the two requirements of 15.247(g) & 15.247(h). END OF REPORT Version.1.2 Page 73 of 73
| frequency | equipment class | purpose | ||
|---|---|---|---|---|
| 1 | 2019-07-25 | 2402 ~ PowerOutput | DSS - Part 15 Spread Spectrum Transmitter | Original Equipment |
| app s | Applicant Information | |||||
|---|---|---|---|---|---|---|
| 1 | Effective |
2019-07-25
|
||||
| 1 | Applicant's complete, legal business name |
Helm Audio LTD
|
||||
| 1 | FCC Registration Number (FRN) |
0028511947
|
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| 1 | Physical Address |
35 Floor, Central Plaza
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| 1 |
Hong Kong, N/A
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| 1 |
Hong Kong
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| app s | TCB Information | |||||
| 1 | TCB Application Email Address |
c******@micomlabs.com
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| 1 | TCB Scope |
A4: UNII devices & low power transmitters using spread spectrum techniques
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| app s | FCC ID | |||||
| 1 | Grantee Code |
2ATGH
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| 1 | Equipment Product Code |
500B
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| app s | Person at the applicant's address to receive grant or for contact | |||||
| 1 | Name |
J******** W****
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| 1 | Title |
Manager
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| 1 | Telephone Number |
+852 ********
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| 1 | Fax Number |
+852 ********
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| 1 |
j******@helmaudio.com
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| app s | Technical Contact | |||||
| 1 | Firm Name |
Shenzhen NTEK Testing Technology Co., Ltd.
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| 1 | Physical Address |
China
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| 1 |
J******@helmaudio.com
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| app s | Non Technical Contact | |||||
| n/a | ||||||
| app s | Confidentiality (long or short term) | |||||
| 1 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
| 1 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
| 1 | If so, specify the short-term confidentiality release date (MM/DD/YYYY format) | 09/08/2019 | ||||
| if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
| app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
| 1 | Is this application for software defined/cognitive radio authorization? | No | ||||
| 1 | Equipment Class | DSS - Part 15 Spread Spectrum Transmitter | ||||
| 1 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | HELM TrueWireless 5.0 | ||||
| 1 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
| 1 | Modular Equipment Type | Does not apply | ||||
| 1 | Purpose / Application is for | Original Equipment | ||||
| 1 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | No | ||||
| 1 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
| 1 | Grant Comments | Power listed is the maximum conducted output power. | ||||
| 1 | Is there an equipment authorization waiver associated with this application? | No | ||||
| 1 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
| app s | Test Firm Name and Contact Information | |||||
| 1 | Firm Name |
Shenzhen NTEK Testing Technology Co., Ltd.
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| 1 | Name |
A****** L******
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| 1 | Telephone Number |
+86-7********
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| 1 |
c******@ntek.org.cn
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| Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
| 1 | 1 | 15C | 2402.00000000 | 2480.00000000 | 0.0019140 | ||||||||||||||||||||||||||||||||||||
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC