DOSS SoundBox BT3.0 FCC ID Test Report
Test Report
Wonders Technology Co., Ltd. DS1681 Wireless Bluetooth Speaker WC2-DS1681 WC2DS1681 ds1681
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Document DEVICE REPORTGetApplicationAttachment.html?id=2961754Report No.: MTE/DYY/S16030486 TEST REPORT For Applicant : Wonders Technology Co.,Ltd DOSS Industrial Zone, Qiping Kengdu Industrial Area Address : Guihua Village, Guanlan Town Baoan District, ShenZhen, China Product Name : Wireless Bluetooth Speaker Model Name : DOSS SoundBox, DS-1681 Remark : Only difference in the model name. Brand Name : N/A FCC ID : WC2- DS1681 Report No. : MTE/DYY/S16030486 Date of Issue : Mar. 31, 2016 Issued by : Most Technology Service Co., Ltd. No.5, 2nd Langshan Road, North District, Hi-tech Industrial Address : Park, Nanshan, Shenzhen, Guangdong, China Tel : 86-755-8602 6850 Fax : 86-755-26013350 The report consists 50 pages in total. It may be duplicated completely for legal use with the approval of the applicant. It should not be reproduced except in full, without the written approval of our laboratory. The client should not use it to claim product endorsement by MOST. The test results in the report only apply to the tested sample. The test report shall be invalid without all the signatures of testing engineers, reviewer and approver. Page 1 of 50 Report No.: MTE/DYY/S16030486 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY............................................................... 4 2. GENERAL INFORMATION................................................................................. 5 2.1 Product Information ................................................................................................................ 5 2.2 Objective ................................................................................................................................ 5 2.3 Test Standards and Results .................................................................................................... 6 2.4 Environmental Conditions....................................................................................................... 6 3. TEST METHODOLOGY ..................................................................................... 7 3. 1TEST FACILITY...................................................................................................................... 7 3.2 GENERAL TEST PROCEDURES .......................................................................................... 7 4. SETUP OF EQUIPMENT UNDER TEST ............................................................ 8 4.1 SETUP CONFIGURATION OF EUT....................................................................................... 8 4.2 TEST EQUIPMENT LIST........................................................................................................ 8 5. 47 CFR Part 15 C Requirements ...................................................................... 9 5.1 RF EXPOSURE...................................................................................................................... 9 5.1.1 Applicable Standard............................................................................................................. 9 5.1.2 Measurement Result ........................................................................................................... 9 5.2 ANTENNA REQUIREMENT ................................................................................................. 10 5.2.1 Applicable Standard .......................................................................................................... 10 5.2.2 Evaluation Criteria ............................................................................................................. 10 5.2.3 Result: Compliance. .......................................................................................................... 10 5.3 AC Power Line Conducted Emission.....................................................................................11 5.3.1Requirement ........................................................................................................................ 11 5.3.2 Block Diagram of Test Setup ..............................................................................................11 5.3.3 Test procedure....................................................................................................................11 5.3.4 Test Result..........................................................................................................................11 5.4 Radiated Emission ............................................................................................................... 12 5.4.1Requirement....................................................................................................................... 14 5.4.2 Test Configuration.............................................................................................................. 14 5.4.3 Test Procedure: ................................................................................................................. 15 5.4.4 Test Result......................................................................................................................... 16 5.5.1 Requirement...................................................................................................................... 23 5.5.2 Block Diagram of Test Setup ............................................................................................. 23 5.5.3 Test Procedure .................................................................................................................. 23 5.5.4 Test Result......................................................................................................................... 23 5.6 20dB Emission Bandwidth.................................................................................................... 27 5.6.1 Test Requirement .............................................................................................................. 27 5.6.2 Test Procedure .................................................................................................................. 27 5.6.3 Test Result......................................................................................................................... 27 5.7 Carrier Frequency Separation .............................................................................................. 31 5.7.1 Test Requirement .............................................................................................................. 31 5.7.2 Test Procedure .................................................................................................................. 31 5.7.3 Test Result......................................................................................................................... 31 5.8 Number of Hopping Channel ................................................................................................ 35 5.8.1 Test Requirement .............................................................................................................. 35 5.8.2 Test Procedure .................................................................................................................. 35 5.8.3 Test Result......................................................................................................................... 35 5.9 Dwell Time............................................................................................................................ 37 5.9.1 Test Requirement .............................................................................................................. 37 5.9.2 Test Procedure .................................................................................................................. 37 5.9.3 Test Result......................................................................................................................... 37 Page 2 of 50 Report No.: MTE/DYY/S16030486 5.9 Band Edge and Conducted Spurious Emissions .................................................................. 41 5.9.1 Test Requirement .............................................................................................................. 41 5.9.2 Test Procedure .................................................................................................................. 41 5.9.3 Test Result......................................................................................................................... 41 5.10 Restricted Frequency Bands .............................................................................................. 46 5.10.1 Test Requirement ............................................................................................................ 46 5.10.2 Test Configuration............................................................................................................ 46 5.10.3 Test Procedure: ............................................................................................................... 46 5.10.4 Test Result....................................................................................................................... 46 Page 3 of 50 1. VERIFICATION OF CONFORMITY Report No.: MTE/DYY/S16030486 Equipment Under Test: Wireless Bluetooth Speaker Brand Name: N/A Model Number: DOSS SoundBox FCC ID WC2- DS1681 Applicant: Wonders Technology Co., Ltd DOSS Industrial Zone,Qiping Kengdu Industrial Area Guihua Village, Guanlan Town Baoan District, ShenZhen, China Manufacturer: Wonders Technology Co., Ltd DOSS Industrial Zone,Qiping Kengdu Industrial Area Guihua Village, Guanlan Town Baoan District, ShenZhen, China Technical Standards: 47 CFR Part 15 Subpart C File Number: MTE/DYY/S16030486 Date of test: Mar. 20-28, 2016 Deviation: None Condition of Test Sample: Normal Test Result: PASS The above equipment was tested by Most Technology Service Co., Ltd. for compliance with the requirements set forth in FCC rules and the Technical Standards mentioned above. This said equipment in the configuration described in this report shows the maximum emission levels emanating from equipment and the level of the immunity endurance of the equipment are within the compliance requirements. The test results of this report relate only to the tested sample identified in this report. Tested by (+ signature): Daisy Yu Review by (+ signature): Henry Chen Mar. 20-28, 2016 Mar. 31, 2016 Approved by (+ signature): Yvette Zhou (Manager) Mar. 31, 2016 Page 4 of 50 Report No.: MTE/DYY/S16030486 2. GENERAL INFORMATION 2.1 Product Information Product Wireless Bluetooth Speaker Brand Name N/A Model Number DOSS SoundBox Series Model Name: DS-1681 Series Model Difference description: Power Supply Frequency Range Only difference in the model name. DC 5V by USB Port DC 3.7V by Battery 2402MHz -2480MHz Modulation Type: GFSK,/4-DQPSK, 8DPSK Modulation Technique FHSS Channel Number 79 Antenna Type PCB Antenna, 0 dBi Temperature Range 0°C ~ +40°C NOTE: 1. For a more detailed features description about the EUT, please refer to User's Manual. 2.2 Objective The objective of the report is to perform tests according to FCC Part 15 Subpart C for the EUT FCC ID Certification: No. Identity 1 47 CFR Part 15 2 DA00-705 Radio Frequency Devices Document Title Filing and Measurement Guidelines for Frequency Hopping Spread Spectrum Systems. Page 5 of 50 2.3 Test Standards and Results Report No.: MTE/DYY/S16030486 No. Section Test Items 1 FCC 15.247 (i) 2 FCC 15.203 RF EXPOSURE Antenna Requirement 3 FCC15.207 (a) AC Power Line Conducted Emission 4 FCC15.209, 15.247(d) 5 FCC 15.247 (b)(1) Radiated Emission Conducted Peak Output Power 6 FCC 15.247 (a)(1) 7 FCC 15.247 (a)(1) 20dB Emission Bandwidth Carrier Frequency Separation 8 FCC 15.247 (a)(1)(iii) Number of Hopping Channel 9 FCC 15.247 (a)(1) (iii) 10 FCC15.247(d) Dwell Time Band Edge and Conducted Spurious Emissions 11 FCC15.247(d) Restricted Frequency Bands Remark: N/A means not applicable Result Date of Test PASS PASS 2016-03-26 2016-03-26 PASS 2016-03-26 PASS PASS 2016-03-26 2016-03-25 PASS PASS 2016-03-25 2016-03-20 PASS 2016-03-20 PASS PASS 2016-03-25 2016-03-20 PASS 2016-03-20 Note: 1. The test result judgment is decided by the limit of measurement standard 2. The information of measurement uncertainty is available upon the customer's request. 2.4 Environmental Conditions During the measurement the environmental conditions were within the listed ranges: - Temperature: 15-35ºC - Humidity: 30-60 % - Atmospheric pressure: 86-106 kPa Page 6 of 50 Report No.: MTE/DYY/S16030486 3. TEST METHODOLOGY 3. 1TEST FACILITY Test Site: Location: Most Technology Service Co., Ltd No.5, Langshan 2nd Rd., North Hi-Tech Industrial park, Nanshan, Shenzhen, Guangdong, China Description: There is one 3m semi-anechoic an area test sites and two line conducted labs for final test. The Open Area Test Sites and the Line Conducted labs are constructed and calibrated to meet the FCC requirements in documents ANSI C63.10:2013 and CISPR 16 requirements. The FCC Registration Number is 490827. The IC Registration Number is 7103A-1. Site Filing: The site description is on file with the Federal Communications Commission, 7435 Oakland Mills Road, Columbia, MD 21046. Instrument All measuring equipment is in accord with ANSI C63.10:2013 and CISPR 16 Tolerance: requirements that meet industry regulatory agency and accreditation agency requirement. Ground Plane: Two conductive reference ground planes were used during the Line Conducted Emission, one in vertical and the other in horizontal. The dimensions of these ground planes are as below. The vertical ground plane was placed distancing 40 cm to the rear of the wooden test table on where the EUT and the support equipment were placed during test. The horizontal ground plane projected 50 cm beyond the footprint of the EUT system and distanced 80 cm to the wooden test table. For Radiated Emission Test, one horizontal conductive ground plane extended at least 1m beyond the periphery of the EUT and the largest measuring antenna, and covered the entire area between the EUT and the antenna. 3.2 GENERAL TEST PROCEDURES Radiated Emissions The EUT is placed on a turn table, which is 1.5 m above ground plane. The turntable shall rotate 360 degrees to determine the position of maximum emission level. EUT is set 3m away from the receiving antenna, which varied from 1m to 4m to find out the highest emission. And also, each emission was to be maximized by changing the polarization of receiving antenna both horizontal and vertical. In order to find out the maximum emissions, exploratory radiated emission measurements were made according to the requirements in Section 6.5 of ANSI C63.10:2013. Conducted Emissions The EUT is placed on the turntable, which is 0.8 m above ground plane. According to the requirements in Section 6.2 of ANSI C63.10:2013,Conducted emissions from the EUT measured in the frequency range between 0.15 MHz and 30MHz using CISPR Quasi-peak and average detector modes. Page 7 of 50 Report No.: MTE/DYY/S16030486 4. SETUP OF EQUIPMENT UNDER TEST 4.1 SETUP CONFIGURATION OF EUT See test photographs attached in Appendix 1 for the actual connections between EUT and support equipment. 4.2 TEST EQUIPMENT LIST Instrumentation: The following list contains equipment used at Most for testing. The equipment conforms to the CISPR 16-1 / ANSI C63.2 Specifications for Electromagnetic Interference and Field Strength Instrumentation from 10 kHz to 1.0 GHz or above. No. Equipment 1 Test Receiver Manufacturer Rohde & Schwarz Model No. ESCI S/N 100492 Calibration date 2016/03/10 2 Spectrum Analyzer Agilent E7405A US44210471 2016/03/14 3 L.I.S.N. Rohde & Schwarz ENV216 100093 2016/03/10 4 Coaxial Switch Anritsu Corp MP59B 6200283933 2016/03/07 5 Terminator Hubersuhner 50 No.1 2016/03/07 6 RF Cable SchwarzBeck N/A No.1 2016/03/07 7 Test Receiver Rohde & Schwarz ESPI 101202 2016/03/10 8 Bilog Antenna Sunol JB3 A121206 2016/03/14 9 Horn Antenna SCHWARZBECK BBHA9120D 756 2016/03/14 10 Horn Antenna Penn Engineering 9034 8376 2016/03/14 11 Cable Resenberger N/A NO.1 2016/03/07 12 Cable SchwarzBeck N/A NO.2 2016/03/07 13 Cable SchwarzBeck N/A NO.3 2016/03/07 14 Single Phase Power Line Filter DuoJi FNF 202B30 N/A 2016/03/07 15 Test Receiver Rohde & Schwarz ESCI 100492 2016/03/10 16 Loop antenna ARA PLA-1030/B 1039 2016/03/14 NOTE: Equipments listed above have been calibrated and are in the period of validation. Calibration Interval 1 Year 1 Year 1 Year 1 Year 1 Year 1 Year 1 Year 1 Year 1 Year 1 Year 1 Year 1 Year 1 Year 1 Year 1 Year 1 Year Page 8 of 50 Report No.: MTE/DYY/S16030486 5. 47 CFR Part 15 C Requirements 5.1 RF EXPOSURE 5.1.1 Applicable Standard According to§15.247(i) and §1.1310, systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission's guideline. According to KDB447498 D01 General RF Exposure Guidance v05r02: The 1-g 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 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 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below The test exclusions are applicable only when the minimum test separation distance is 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. 5.1.2 Measurement Result The maximum conducted output power=0.547 dBm (1.134 mW) at 2402 MHz [(max. power of channel, mW)/(min. test separation distance, mm)] [f(GHz)] =1.134/5*(2.402) = 0.351< 3.0 So the stand-alone SAR evaluation is not necessary. Page 9 of 50 Report No.: MTE/DYY/S16030486 5.2 ANTENNA REQUIREMENT 5.2.1 Applicable Standard According to FCC § 15.203 , An intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the provisions of this section. The manufacturer may design the unit so that a broken antenna can be replaced by the user, but the use of a standard antenna jack or electrical connector is prohibited. This requirement does not apply to carrier current devices or to devices operated under the provisions of §15.211, §15.213, §15.217, §15.219, or §15.221. Further, this requirement does not apply to intentional radiators that must be professionally installed, such as perimeter protection systems and some field disturbance sensors, or to other intentional radiators which, in accordance with §15.31(d), must be measured at the installation site. However, the installer shall be responsible for ensuring that the proper antenna is employed so that the limits in this part are not exceeded. 5.2.2 Evaluation Criteria (a) Antenna must be permanently attached to the unit. (b) Antenna must use a unique type of connector to attach to the EUT. Unit must be professionally installed, Installer shall be responsible for verifying that the correct antenna is employed with the unit. 5.2.3 Result: Compliance. The EUT has one integral antenna arrangement, which was permanently attached and the antenna gain is 0 dBi, fulfill the requirement of this section. Page 10 of 50 Report No.: MTE/DYY/S16030486 5.3 AC Power Line Conducted Emission 5.3.1Requirement A radio apparatus that is designed to be connected to the public utility (AC) power line shall ensure that the radio frequency voltage, which is conducted back onto the AC power line on any frequency or frequencies within the and 150 kHz-30 MHz, shall not exceed the limits in the following table: Frequency 150kHz-500kHz Maximum RF Line Voltage Q.P.( dBuV) Average( dBuV) 66-56 56-46 500kHz-5MHz 56 46 5MHz-30MHz 60 50 **Note: 1. the lower limit shall apply at the band edges. 2. The limit decreases linearly with the logarithm of the frequency in the range 0.15 MHz to 0.50 MHz 5.3.2 Block Diagram of Test Setup 80cm 40cm EUT 80cm >80cm LISN Receiver 5.3.3 Test procedure 1. The E.U.T and simulators are connected to the main power through a line impedance stabilization network (L.I.S.N.). This provides a 50ohm/50uH coupling impedance for the measuring equipment. 2. Exploratory measurements were made to identify the frequency of the emission that has the highest amplitude relative to the limit; 3. The peripheral devices are also connected to the main power through a LISN that provides a 50ohm/50uH coupling impedance with 50ohm termination. (Please refer to the block diagram of the test setup and photographs). 4. Both sides of A.C. line are checked for maximum conducted interference. In order to find the maximum emission, the relative positions of equipment and all of the interface cables must be changed according to ANSI C63.10:2013 on conducted measurement. 5. The bandwidth of test receiver (ESCI) set at 9 KHz. 6. All data was recorded in the Quasi-peak and average detection mode. 5.3.4 Test Result Pass Note: All test modes are performed, only the worst case is recorded in this report. Please refer the following pages. Page 11 of 50 EUT: Mode: Test by: Temperature: / Humidity Wireless Bluetooth Speaker Charging John 23.6/ 52.3% Report No.: MTE/DYY/S16030486 M/N: Phase: Power: Test date: DOSS SoundBox L1 DC 5V by USB Port 2016-03-26 Page 12 of 50 EUT: Mode: Test by: Temperature: / Humidity Wireless Bluetooth Speaker Charging John 23.6/ 52.3% Report No.: MTE/DYY/S16030486 M/N: Phase: Power: Test date: DOSS SoundBox N DC 5V by USB Port 2016-03-26 Page 13 of 50 Report No.: MTE/DYY/S16030486 5.4 Radiated Emission 5.4.1Requirement According to FCC section 15.247(d), 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)). According to FCC section 15.209(a), Except as provided elsewhere in this subpart, the emissions from an intentional radiator shall not exceed the field strength levels specified in the following table: Frequency (MHz) 0.009 - 0.490 0.490 - 1.705 1.705-30 30-88 88-216 216-960 Above 960 Field Strength (V/m at 3-meter) 2400/F(kHz) 24000/F(kHz) 30 100 150 200 500 Test Distance (m) 300 30 30 3 3 3 3 Field Strength (dBV/m at 3-meter) 40 43.5 46 54 Note: 1. For Above 1000MHz, the emission limit in this paragraph is based on measurement instrumentation employing an average detector, measurement using instrumentation with a peak detector function, corresponding to 20dB above the maximum permitted average limit. 2. For above 1000MHz, limit field strength of harmonics: 54dBuV/m@3m (AV) and 74dBuV/m@3m (PK) 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)). 5.4.2 Test Configuration Test Setup: 1) For radiated emissions from 9kHz to 30MHz Page 14 of 50 2) For radiated emissions from 30MHz to1GHz Report No.: MTE/DYY/S16030486 3) For radiated emissions above 1GHz 5.4.3 Test Procedure: 1. For frequencies above 1GHz, the frequencies of maximum emission was recorded by manually positioning the antenna close to the EUT and by moving the antenna over all sides of the EUT while observing a spectral display. 2. The EUT was placed on the top of a rotating table 1.5 meters above the ground at a 3 meter chamber. The table was rotated 360 degrees to determine the position of the highest radiation. 3. The EUT was set 3 meters away from the interference-receiving antenna, which was mounted on the top of a variable-height antenna tower. 4. The antenna height is varied from one meter to four meters above the ground to determine the maximum value of the field strength. Both horizontal and vertical polarizations of the antenna are set to make the measurement. 5. For each suspected emission, the EUT was arranged to its worst case and then the antenna was tuned to heights from 1 meter to 4 meters and the rote table was turned from 0 degrees to 360 degrees to find the maximum reading. 6. For frequencies above 1GHz, horn antenna mouth should face to the EUT all the time when rise or fall. Page 15 of 50 Report No.: MTE/DYY/S16030486 7. Set the spectrum analyzer in the following setting as: Below 1GHz: PEAK: RBW=100 kHz / VBW=300 kHz / Sweep=AUTO QP: RBW=120 kHz / Sweep=AUTO Above 1GHz: (a)PEAK: RBW=VBW=1MHz / Sweep=AUTO (b)AVERAGE: RBW=1MHz / VBW=10Hz / Sweep=AUTO The test-receiver system was set to Peak Detect Function and Specified Bandwidth with Maximum Hold Mode. 8. If the emission level of the EUT in peak mode was 10dB lower than the limit specified, then testing could be stopped and the peak values of the EUT would be reported. Otherwise the emissions that did not have 10dB margin would be re-tested one by one using peak, quasi-peak or average method as specified and then reported in a data sheet. 5.4.4 Test Result Pass Remark: 1. During the test, pre-scan the GFSK, /4-QPSK, 8DPSK modulation, and found the GFSK modulation which it is worse case in above 1GHz and the GFSK Low channel modulation which it is worse case in below 1GHz. 2. Pre-scan all kind of the place mode (X-axis, Y-axis, Z-axis), and found the Y-axis which it is worse case. Please refer the following pages. Page 16 of 50 Below 1GHz: EUT: Wireless Bluetooth Speaker Mode: GFSK Test by: John Temperature: / Humidity 23.9/ 53.5% Report No.: MTE/DYY/S16030486 M/N: DOSS SoundBox Polarization: Horizontal Power: DC 3.7V by Battery Test date: 2016-03-26 Page 17 of 50 EUT: Wireless Bluetooth Speaker Mode: GFSK Test by: John Temperature: / Humidity 23.9/ 53.5% Report No.: MTE/DYY/S16030486 M/N: DOSS SoundBox Polarization: Vertical Power: DC 3.7V by Battery Test date: 2016-03-26 Page 18 of 50 Above 1GHz: EUT: Wireless Bluetooth Speaker Mode: GFSK-CH0 Test by: John Temperature: / Humidity 23.9/ 53.5% Report No.: MTE/DYY/S16030486 M/N: DOSS SoundBox Polarization: Horizontal Power: DC 3.7V by Battery Test date: 2016-03-25 Page 19 of 50 EUT: Wireless Bluetooth Speaker Mode: GFSK-CH0 Test by: John Temperature: / Humidity 23.9/ 53.5% Report No.: MTE/DYY/S16030486 M/N: DOSS SoundBox Polarization: Horizontal Power: DC 3.7V by Battery Test date: 2016-03-25 Page 20 of 50 EUT: Wireless Bluetooth Speaker Mode: GFSK-CH0 Test by: John Temperature: / Humidity 23.9/ 53.5% Report No.: MTE/DYY/S16030486 M/N: DOSS SoundBox Polarization: Vertical Power: DC 3.7V by Battery Test date: 2016-03-20 Page 21 of 50 EUT: Wireless Bluetooth Speaker Mode: GFSK-CH0 Test by: John Temperature: / Humidity 23.9/ 53.5% Report No.: MTE/DYY/S16030486 M/N: DOSS SoundBox Polarization: Vertical Power: DC 3.7V by Battery Test date: 2016-03-20 Page 22 of 50 Report No.: MTE/DYY/S16030486 5.5 Conducted Peak Output Power 5.5.1 Requirement According to FCC Section 15.247(b)(1), for frequency hopping systems operating in the 24002483.5 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 24002483.5 MHz band: 0.125 watts 5.5.2 Block Diagram of Test Setup 5.5.3 Test Procedure 1. Place the EUT on a bench and set in transmitting mode. 2. Remove the antenna from the EUT and then connect a low loss RF cable from the antenna port to an EMI test receiver. 3. Add a correction factor to the display. 5.5.4 Test Result Test Item: Test Engineer: Peak Output Power Kang Temperature : 21°C Relative Humidity : 59% Mode BDR (GFSK) EDR (/4-DQPSK) EDR (8DPSK) Channel Low Middle High Low Middle High Low Middle High Frequency Peak Output (MHz) Power(dBm) 2402 2441 2480 2402 2441 2480 2402 2441 2480 0.532 -0.537 -1.618 0.547 -0.672 -1.692 0.531 -0.635 -1.688 Limit (mW) 125 125 125 125 125 125 125 125 125 (dBm) 20.97 20.97 20.97 20.97 20.97 20.97 20.97 20.97 20.97 Pass/Fail Pass Pass Pass Pass Pass Pass Pass Pass Pass Page 23 of 50 Report No.: MTE/DYY/S16030486 Ch 0 Ch 39 Ch 78 Page 24 of 50 /4-DQPSK Mode Report No.: MTE/DYY/S16030486 Ch 0 Ch 39 Ch 78 Page 25 of 50 8DPSK Mode Report No.: MTE/DYY/S16030486 Ch 0 Ch 39 Page 26 of 50 Report No.: MTE/DYY/S16030486 5.6 20dB Emission Bandwidth 5.6.1 Test Requirement The bandwidth of a frequency hopping channel is the -20 dB emission bandwidth, measured with the hopping stopped. 5.6.2 Test Procedure 1. Check the calibration of the measuring instrument using either an internal calibrator or a known signal from an external generator. 2. Position the EUT on the test table without connection to measurement instrument. Turn on the EUT.Then set it to any one convenient frequency within its operating range. Set a reference level on the measuring instrument equal to the highest peak value. 3. Measure the frequency difference of two frequencies that were attenuated 20 dB from the reference level. Record the frequency difference as the emission bandwidth. 4. Repeat above procedures until all frequencies measured were complete. 5.6.3 Test Result Test Item: Test Engineer: 20dB Emission Bandwidth Temperature : 23°C Kang Relative Humidity : 65% Mode BDR (GFSK) EDR (/4-DQPSK) EDR (8DPSK) Channel Low Middle High Low Middle High Low Middle High Frequency (MHz) 2402 2441 2480 2402 2441 2480 2402 2441 2480 20dB Bandwidth(MHz) 1.030 0.995 1.025 1.316 1.339 1.316 1.343 1.334 1.333 Page 27 of 50 GFSK Mode Report No.: MTE/DYY/S16030486 Ch 0 Ch 39 Ch 78 Page 28 of 50 /4-DQPSK Mode Report No.: MTE/DYY/S16030486 Ch 0 Ch 39 Ch 78 Page 29 of 50 8DPSK Mode Report No.: MTE/DYY/S16030486 Ch 0 Ch 39 Page 30 of 50 Report No.: MTE/DYY/S16030486 5.7 Carrier Frequency Separation 5.7.1 Test Requirement Frequency hopping systems shall have hoping channel carrier frequencies separated by a minimum of 25 kHz or the 20dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400-2483.50 MHz band may 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 provided the systems operate with an output power no greater than 125 mW. 5.7.2 Test Procedure 1.Set the EUT in transmitting mode, spectrum Bandwidth was set at 30 kHz, maxhold the channel. 2.Set the adjacent channel of the EUT maxhold another trace 3.Measure the channel separation. 5.7.3 Test Result Test Item: Test Engineer: Carrier Frequency Separation Kang Temperature : 23°C Relative Humidity : 65% Mode Channel BDR (GFSK) EDR (/4-DQPSK) EDR (8DPSK) Low Middle High Low Middle High Low Middle High Frequency (MHz) 2402 2441 2480 2402 2441 2480 2402 2441 2480 Channel Separation (MHz) 0.990 1.199 1.013 1.005 1.021 0.983 0.983 0.975 1.035 Limit (MHz) 0.687 0.663 0.683 0.877 0.893 0.877 0.895 0.889 0.889 Result Pass Pass Pass Pass Pass Pass Pass Pass Pass Page 31 of 50 GFSK Mode Report No.: MTE/DYY/S16030486 Ch 0 Ch 39 Ch 78 Page 32 of 50 /4-DQPSK Mode Report No.: MTE/DYY/S16030486 Ch 0 Ch 39 Ch 78 Page 33 of 50 8DPSK Mode Report No.: MTE/DYY/S16030486 Ch 0 Ch 39 Ch 78 Page 34 of 50 Report No.: MTE/DYY/S16030486 5.8 Number of Hopping Channel 5.8.1 Test Requirement Frequency hopping systems in the 24002483.5 MHz band shall use at least 15 channels. 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. Frequency hopping systems may avoid or suppress transmissions on a particular hopping frequency provided that a minimum of 15 channels are used. 5.8.2 Test Procedure 1.Check the calibration of the measuring instrument (SA) using either an internal calibrator or a known signal from an external generator. 2. Set the EUT in hopping mode from first channel to last. 3. By using the Max-Hold function record the Quantity of the channel. 5.8.3 Test Result Test Item: Test Engineer: Number of Hopping Channel Kang Mode GFSK /4-DQPSK 8DPSK Frequency R ange (MHz) 2400-2483.5 2400-2483.5 2400-2483.5 Temperature : 23°C Relative Humidity : 65% Number of Hopping Channel 79 79 79 Limit 15 15 15 Page 35 of 50 Report No.: MTE/DYY/S16030486 GFSK Mode /4-DQPSK 8DPSK Mode Page 36 of 50 Report No.: MTE/DYY/S16030486 5.9 Dwell Time 5.9.1 Test Requirement Frequency hopping systems in the 2400-2483.5 MHz shall use at least 15 channels. 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. Frequency hopping systems may avoid or suppress transmissions on a particular hopping frequency provided that a minimum of 15 channels are used. 5.9.2 Test Procedure The EUT was worked in channel hopping; Spectrum SPAN was set as 0. Sweep was set as 0.4 * channel no. (s), the quantity of pulse was get from single sweep. In addition, the time of single pulses was tested. Dwell Time= time slot length * hope rate/ number of hopping channels * 31.6s Hop rate=1600/s 5.9.3 Test Result Test Item: Test Engineer: Dwell Time Henry Temperature : 25°C Relative Humidity : 65% Mode Packet DH1 Pulse Time (ms) 0.42 Dwell Time(ms) 134.4 Limit(ms) 400 GFSK DH3 1.51 241.6 400 DH5 2.81 299.7 400 /4DQPSK 2DH1 2DH3 0.42 134.4 400 1.51 241.6 400 2DH5 2.85 304.00 400 3DH1 0.41 131.2 400 8DPSK 3DH3 1.54 246.4 400 3DH5 2.69 286.93 400 Note: DH1/2DH1/3DH1: Dwell Time=Pulse Time(ms)X[(1600/2/79)X31.6] DH3/2DH3/3DH3: Dwell Time= Pulse Time(ms)X[(1600/4/79)X31.6] DH5/2DH5/3DH5: Dwell Time= Pulse Time(ms)X[(1600/6/79)X31.6] Result Pass Pass Pass Pass Pass Pass Pass Pass Pass Page 37 of 50 GFSK Mode Report No.: MTE/DYY/S16030486 DH1 DH3 DH5 Page 38 of 50 /4-DQPSK Mode Report No.: MTE/DYY/S16030486 DH1 DH3 DH5 Page 39 of 50 8DPSK Mode Report No.: MTE/DYY/S16030486 DH1 DH3 DH5 Page 40 of 50 Report No.: MTE/DYY/S16030486 5.9 Band Edge and Conducted Spurious Emissions 5.9.1 Test Requirement 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. 5.9.2 Test Procedure 1. Check the calibration of the measuring instrument using either an internal calibrator or a known signal from an external generator. 2. Remove the antenna from the EUT and then connect to a low loss RF cable from the antenna port to a EMI test receiver, then turn on the EUT and make it operate in transmitting mode. Then set it to Low Channel and High Channel within its operating range, and make sure the instrument is operated in its linear range. 3. Set both RBW and VBW of spectrum analyzer to 100 kHz with a convenient frequency span including 100 kHz bandwidth from band edge. 4. 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. 5. Repeat above procedures until all measured frequencies were complete. 5.9.3 Test Result Pass Remark: During the Conducted Spurious Emissions test, pre-scan the GFSK, /4-QPSK, 8DPSK modulation, and found the GFSK modulation which it is worse case. Test Item: Test Engineer: Band Edge Kang Temperature : 23°C Relative Humidity : 65% Page 41 of 50 Band Edge, Left Side Report No.: MTE/DYY/S16030486 GFSK Mode, Non-Hopping GFSK Mode, Hopping /4-DQPSK Mode, Non-Hopping /4-DQPSK Mode, Hopping 8DPSK Mode, Non-Hopping 8DPSK Mode, Hopping Page 42 of 50 Band Edge, Right Side Report No.: MTE/DYY/S16030486 GFSK Mode, Non-Hopping GFSK Mode, Hopping /4-DQPSK Mode, Non-Hopping /4-DQPSK Mode, Hopping 8DPSK Mode, Non-Hopping 8DPSK Mode, Hopping Page 43 of 50 Report No.: MTE/DYY/S16030486 Conducted Spurious Emissions GFSK Mode, Ch0 GFSK Mode, Ch39 Page 44 of 50 Report No.: MTE/DYY/S16030486 Conducted Spurious Emissions GFSK Mode, Ch78 Page 45 of 50 Report No.: MTE/DYY/S16030486 5.10 Restricted Frequency Bands 5.10.1 Test Requirement 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. 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)). 5.10.2 Test Configuration Test Setup: 5.10.3 Test Procedure: 1. The EUT was placed on the top of a rotating table 0.8 meters above the ground at a 3 meter chamber. The table was rotated 360 degrees to determine the position of the highest radiation. 2. The EUT was set 3 meters away from the interference-receiving antenna, which was mounted on the top of a variable-height antenna tower. 3. The antenna height is varied from one meter to four meters above the ground to determine the maximum value of the field strength. Both horizontal and vertical polarizations of the antenna are set to make the measurement. 4. For each suspected emission, the EUT was arranged to its worst case and then the antenna was tuned to heights from 1 meter to 4 meters and the table was turned from 0 degrees to 360 degrees to find the maximum reading. 5.10.4 Test Result Pass Note: All test modes are performed, only the worst case is recorded in this report. Please refer the following plots. Page 46 of 50 EUT: Wireless Bluetooth Speaker Mode: GFSK-CH0 Test by: John Temperature: / Humidity 23.7/ 52.9% Report No.: MTE/DYY/S16030486 M/N: DOSS SoundBox Polarization: Horizontal Power: DC 3.7V by Battery Test date: 2016-03-25 Page 47 of 50 EUT: Wireless Bluetooth Speaker Mode: GFSK-CH0 Test by: John Temperature: / Humidity 23.7/ 52.9% Report No.: MTE/DYY/S16030486 M/N: DOSS SoundBox Polarization: Vertical Power: DC 3.7V by Battery Test date: 2016-03-25 Page 48 of 50 EUT: Wireless Bluetooth Speaker Mode: GFSK-CH78 Test by: John Temperature: / Humidity 23.7/ 52.9% Report No.: MTE/DYY/S16030486 M/N: DOSS SoundBox Polarization: Horizontal Power: DC 3.7V by Battery Test date: 2016-03-25 Page 49 of 50 EUT: Wireless Bluetooth Speaker Mode: GFSK-CH78 Test by: John Temperature: / Humidity 23.7/ 52.9% Report No.: MTE/DYY/S16030486 M/N: DOSS SoundBox Polarization: Vertical Power: DC 3.7V by Battery Test date: 2016-03-25 End of Report Page 50 of 50
Related FCC IDs:
- WC2-DS1681 - Wonders Technology Co., Ltd. Wireless Bluetooth Speaker [-DS1681] Acrobat Distiller 8.1.0 (Windows)