Test Report

FCC ID: S7JEM190F

Test Report

Download: PDF
FCCID_540627

Page 1 of 21 FCC CERTIFICATION On Behalf of Shenzhen Yifang Digital Technologies Co.,Ltd. CAR MP3 PLAYER Model No.: EM190F FCC ID: S7JEM190F Prepared for : Shenzhen Yifang Digital Technologies Co.,Ltd. Address : 5/F.,Bldg.H-3, Huaqiaocheng East Industrial Park, No.1 Xiangshan East Rd., Nanshan District, Shenzhen City, Guangdong, P.R.China Prepared by : ACCURATE TECHNOLOGY CO. LTD Address : F1, Bldg. A, Changyuan New Material Port, Keyuan Rd. Science & Industry Park, Nanshan, Shenzhen, Guangdong P.R. China Tel: (0755) 26503290 Fax: (0755) 26503396 Report Number : ATE2005494 Date of Test : April 15-16, 2005 Date of Report : April 18, 2005 FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 2 of 21 TABLE OF CONTENTS Description Page Test Report Certification 1. GENERAL INFORMATION .......................................................................................................... 4 1.1. Description of Device (EUT)....................................................................................................................4 1.2. Description of Test Facility ......................................................................................................................4 1.3. Measurement Uncertainty.........................................................................................................................4 2. MEASURING DEVICE AND TEST EQUIPMENT ..................................................................... 5 3. RADIATED EMISSION FOR FCC PART 15 SECTION 15.239(C)........................................... 6 3.1. Block Diagram of Test Setup....................................................................................................................6 3.2. The Emission Limit for section 15.239(c) ................................................................................................6 3.3. Configuration of EUT on Measurement ...................................................................................................7 3.4. Operating Condition of EUT ....................................................................................................................7 3.5. Test Procedure ..........................................................................................................................................7 3.6. The Field Strength of Radiation Emission Measurement Results ............................................................8 4. FUNDAMENTAL RADIATED EMISSION FOR FCC PART 15 SECTION 15.239(B) ........ 11 4.1. Block Diagram of Test Setup..................................................................................................................11 4.2. The Emission Limit For Section 15.239(b) ............................................................................................11 4.3. EUT Configuration on Measurement .....................................................................................................12 4.4. Operating Condition of EUT ..................................................................................................................12 4.5. Test Procedure ........................................................................................................................................12 4.6. The Emission Measurement Result ........................................................................................................13 5. OCCUPIED BANDWIDTH FOR FCC PART 15 SECTION 15.239(A) ................................... 14 5.1. The Requirement For Section 15.239(b) ................................................................................................14 5.2. EUT Configuration on Measurement .....................................................................................................14 5.3. Operating Condition of EUT ..................................................................................................................14 5.4. Test Procedure ........................................................................................................................................14 5.5. Test Result ..............................................................................................................................................15 APPENDIX I ( TEST CURVES) (5pages) FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 3 of 21 Test Report Certification Applicant : Shenzhen Yifang Digital Technologies Co., Ltd. Manufacturer : Shenzhen Yifang Digital Technologies Co., Ltd. EUT Description : CAR MP3 PLAYER (A) MODEL NO.: EM190F (B) SERIAL NO.: N/A (C) POWER SUPPLY: 12V DC Measurement Procedure Used: FCC Rules and Regulations Part 15 Subpart C Section 15.239: 2004 & ANSI C63.4: 2003 The device described above is tested by ACCURATE TECHNOLOGY CO. LTD to determine the maximum emission levels emanating from the device. The maximum emission levels are compared to the FCC Part 15 Subpart C Section15.239 limits. The measurement results are contained in this test report and ACCURATE TECHNOLOGY CO. LTD is assumed full responsibility for the accuracy and completeness of these measurements. Also, this report shows that the Equipment Under Test (EUT) is to be technically compliant with the FCC requirements. This report applies to above tested sample only. This report shall not be reproduced in part without written approval of ACCURATE TECHNOLOGY CO. LTD. Date of Test : April 15-16, 2005 Prepared by : (Engineer) Reviewer : (Quality Manager) Approved & Authorized Signer : (Manager) FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 4 of 21 1. GENERAL INFORMATION 1.1.Description of Device (EUT) EUT : CAR MP3 PLAYER Model Number : EM190F Power Supply : 12V DC Applicant : Shenzhen Yifang Digital Technologies Co., Ltd. Address : 5/F.,Bldg.H-3, Huaqiaocheng East Industrial Park, No.1 Xiangshan East Rd., Nanshan District, Shenzhen City, Guangdong, P.R.China Manufacturer : Shenzhen Yifang Digital Technologies Co., Ltd. Address : 5/F.,Bldg.H-3, Huaqiaocheng East Industrial Park, No.1 Xiangshan East Rd., Nanshan District, Shenzhen City, Guangdong, P.R.China Date of sample received : April 10, 2005 Date of Test : April 15-16, 2005 1.2.Description of Test Facility EMC Lab : Accredited by TUV Rheinland Shenzhen, May 10, 2004 Accredited by FCC, May 10, 2004 The Certificate Registration Number is 253065 Accredited by Industry Canada, May 18, 2004 The Certificate Registration Number is IC 5077 Name of Firm : ACCURATE TECHNOLOGY CO. LTD Site Location : F1, Bldg. A, Changyuan New Material Port, Keyuan Rd. Science & Industry Park, Nanshan, Shenzhen, Guangdong P.R. China 1.3.Measurement Uncertainty Conducted Emission Uncertainty = ±2.66dB Radiated Emission Uncertainty = ±4.26dB FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 5 of 21 2. MEASURING DEVICE AND TEST EQUIPMENT Table 1: List of Test and Measurement Equipment Kind of equipment Manufacturer Type S/N Calibrated until EMI Test Receiver Rohde&Schwarz ESCS30 100307 01.02.2006 EMI Test Receiver Rohde&Schwarz ESI26 838786/013 01.02.2006 Bilog Antenna Schwarzbeck VULB9163 9163-194 01.02.2006 Horn Antenna Rohde&Schwarz HF906 100013 01.02.2006 Spectrum Analyzer Anritsu MS2651B 6200238856 01.02.2006 Pre-Amplifier Agilent 8447D 2944A10619 01.02.2006 Signal Generator GW GAG-810 0913317 01.02.2006 FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 6 of 21 3. RADIATED EMISSION FOR FCC PART 15 SECTION 15.239(C) 3.1.Block Diagram of Test Setup 3.1.1.Block diagram of connection between the EUT and simulators EUT (EUT: CAR MP3 PLAYER) 3.1.2.Anechoic Chamber Test Setup Diagram ANTENNA ELEVATION VARIES FROM 1 TO 4 METERS 3 METERS EUT Cable 0.8 METER GROUND PLANE (EUT: CAR MP3 PLAYER) 3.2.The Emission Limit for section 15.239(c) 3.2.1 The field strength of any emissions radiated on any frequency outside of the specified 200kHz band shall not exceed the general radiated emission limits in section 15.209 Radiation Emission Measurement Limits According to Section 15.209 Limit, Frequency Field Strength of Field Strength of The final measurement Quasi-peak Value Quasi-peak Value in band 9-90kHz, (MHz) (microvolts/m) (dBµV/m) 110-490kHz and above 1000MHz is 30 - 88 100 40 performed with Average detector. 88 - 216 150 43.5 Except those FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 7 of 21 frequency bands 216 - 960 200 46 mention above, the final measurement for frequencies below Above 960 500 54 1000MHz is performed with Quasi Peak detector. 3.3.Configuration of EUT on Measurement The following equipment are installed on Radiated Emission Measurement to meet the commission requirements and operating regulations in a manner which tends to maximize its emission characteristics in normal application. 3.3.1.CAR MP3 PLAYER(EUT) Model Number : EM190F Serial Number : N/A Manufacturer : Shenzhen Yifang Digital Technologies Co., Ltd. 3.4.Operating Condition of EUT 3.4.1.Setup the EUT and simulator as shown as Section 3.1. 3.4.2.Turn on the power of all equipment. 3.4.3. Let the EUT work in TX modes (On with 1kHz signal) measure it. The transmit frequency are 88.1, 88.3, 88.5, 88.7, 88.9MHz.We are select the lowest, Middle and highest frequency to transmitted. 3.5.Test Procedure The EUT and its simulators are placed on a turntable, which is 0.8 meter high above ground. The turntable can rotate 360 degrees to determine the position of the maximum emission level. EUT is set 3.0 meters away from the receiving antenna, which is mounted on an antenna tower. The antenna can be moved up and down between 1.0 meter and 4 meters to find out the maximum emission level. Broadband antenna (calibrated bilog antenna) is used as receiving antenna. Both horizontal and vertical polarizations of the antenna are set on measurement. In order to find the maximum emission levels, all of the interface cables must be manipulated according to ANSI C63.4: 2003 on radiated emission measurement. The bandwidth of test receiver (R&S ESI26) is set at 120KHz in 30-1000MHz. The frequency range from 30MHz to 1000MHz is checked. The final measurement in band 9-90kHz, 110-490kHz and above 1000MHz is performed with Average detector. Except those frequency bands mention above, the final measurement for frequencies below 1000MHz is performed with Quasi Peak detector. FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 8 of 21 3.6.The Field Strength of Radiation Emission Measurement Results PASS. The frequency range 30MHz to 1000MHz is investigated. Date of Test: April 16, 2005 Temperature: 22oC EUT: CAR MP3 PLAYER Humidity: 50% Model No.: EM190F Power Supply: 12V DC Test Mode: TX 88.1MHz Test Engineer: Andy Emission Level Frequency Limits Margin Polarization dBµV/m MHz dBµV/m dBµV/m QP Horizontal 49.1 34.7 40 5.3 Horizontal 147.5 34.6 43.5 8.9 Horizontal 172.0 36 43.5 7.5 Horizontal 196.6 35.4 43.5 8.1 Vertical 49.1 36.1 40 3.9 Vertical 147.5 37.7 43.5 5.8 Vertical 172.0 35.8 43.5 7.7 Vertical 196.6 35.3 43.5 8.2 The spectral diagrams in appendix I display the measurement of un-weighted peak values. FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 9 of 21 Date of Test: April 16, 2005 Temperature: 22oC EUT: CAR MP3 PLAYER Humidity: 50% Model No.: EM190F Power Supply: 12V DC Test Mode: TX 88.5MHz Test Engineer: Andy Emission Level Frequency Limits Margin Polarization dBµV/m MHz dBµV/m dBµV/m QP Horizontal 49.1 33.7 40 6.3 Horizontal 147.5 34.6 43.5 8.9 Horizontal 172.0 35.8 43.5 7.7 Horizontal 196.6 35.4 43.5 8.1 Vertical 49.1 36.2 40 3.8 Vertical 122.9 35.8 43.5 7.7 Vertical 147.5 36.9 43.5 6.6 Vertical 172.0 35.5 43.5 8.0 Vertical 196.6 32.6 43.5 10.9 The spectral diagrams in appendix I display the measurement of un-weighted peak values. FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 10 of 21 Date of Test: April 16, 2005 Temperature: 22oC EUT: CAR MP3 PLAYER Humidity: 50% Model No.: EM190F Power Supply: 12V DC Test Mode: TX 88.9MHz Test Engineer: Andy Emission Level Frequency Limits Margin Polarization dBµV/m MHz dBµV/m dBµV/m QP Horizontal 49.1 31.7 40 8.3 Horizontal 147.5 34.4 43.5 9.1 Horizontal 172.0 35.8 43.5 7.7 Horizontal 196.6 35.4 43.5 8.1 Vertical 49.1 36.3 40 3.7 Vertical 122.9 36.6 43.5 6.9 Vertical 147.5 37.6 43.5 5.9 Vertical 172.0 33.4 43.5 10.1 Vertical 196.6 31.9 43.5 11.6 The spectral diagrams in appendix I display the measurement of un-weighted peak values. Reviewer : FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 11 of 21 4. FUNDAMENTAL RADIATED EMISSION FOR FCC PART 15 SECTION 15.239(B) 4.1.Block Diagram of Test Setup 4.1.1.Block diagram of connection between the EUT and simulators EUT (EUT: CAR MP3 PLAYER) 4.1.2.Anechoic Chamber Test Setup Diagram ANTENNA ELEVATION VARIES FROM 1 TO 4 METERS 3 METERS EUT Cable 0.8 METER GROUND PLANE (EUT: CAR MP3 PLAYER) 4.2.The Emission Limit For Section 15.239(b) 4.2.1 The field strength of any emission within the permitted 200kHz band shall not exceed 250microvolts/meter at 3 meters. The emission limit in this paragraph is based on measurement instrumentation employing an average detector. The provisions in section 15.35 for limiting peak emissions apply. FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 12 of 21 4.3.EUT Configuration on Measurement The following equipment are installed on the emission Measurement to meet the commission requirements and operating regulations in a manner which tends to maximize its emission characteristics in normal application. 4.3.1.CAR MP3 PLAYER(EUT) Model Number : EM190F Serial Number : N/A Manufacturer : Shenzhen Yifang Digital Technologies Co., Ltd. 4.4.Operating Condition of EUT 4.4.1.Setup the EUT and simulator as shown as Section 4.1. 4.4.2.Turn on the power of all equipment. 4.4.3. Let the EUT work in TX mode (On with 1kHz signal) measure it. The transmit frequency are 88.1, 88.3, 88.5, 88.7, 88.9MHz.We are select the lowest, Middle and highest frequency to transmitted. 4.5.Test Procedure The EUT and its simulators are placed on a turntable, which is 0.8 meter high above ground. The turntable can rotate 360 degrees to determine the position of the maximum emission level. EUT is set 3.0 meters away from the receiving antenna, which is mounted on an antenna tower. The antenna can be moved up and down between 1.0 meter and 4 meters to find out the maximum emission level. Broadband antenna (calibrated bilog antenna) is used as receiving antenna. Both horizontal and vertical polarizations of the antenna are set on measurement. In order to find the maximum emission levels, all of the interface cables must be manipulated according to ANSI C63.4: 2003 on radiated emission measurement. FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 13 of 21 4.6.The Emission Measurement Result PASS. Date of Test: April 16, 2005 Temperature: 22oC EUT: CAR MP3 PLAYER Humidity: 50% Model No.: EM190F Power Supply: 12V DC Test Mode: TX Test Engineer: Andy Fundamental Radiated Emissions Test conditions Fundamental Frequency 88.1MHz Unit (dBµV/m)/ (μV/m) (dBµV/m)/(μV/m) Tnom(22°C) AV PEAK Horizontal 38.9/88.1 39.1/90.2 Vertical 40.1/101.2 41.2/114.8 limit 48/250 68/2500 Note: Measurement was performed with modulated signal with average detector and peak detector. Test conditions Fundamental Frequency 88.5MHz Unit (dBµV/m)/ (μV/m) (dBµV/m)/(μV/m) Tnom(22°C) AV PEAK Horizontal 37.6/75.9 39.4/93.3 Vertical 39.1/90.2 41.3/116.1 limit 48/250 68/2500 Note: Measurement was performed with modulated signal with average detector and peak detector. Test conditions Fundamental Frequency 88.9MHz Unit (dBµV/m)/ (μV/m) (dBµV/m)/(μV/m) Tnom(22°C) AV PEAK Horizontal 38.8/87.1 39.8/97.7 Vertical 40.0/100 41.2/114.8 limit 48/250 68/2500 Note: Measurement was performed with modulated signal with average detector and peak detector. Reviewer : FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 14 of 21 5. OCCUPIED BANDWIDTH FOR FCC PART 15 SECTION 15.239(A) 5.1.The Requirement For Section 15.239(a) 5.1.1. Emission from the device shall be confined within a band 200kHz wide centered on the operating frequency. The 200kHz band shall lie wholly within the frequency range of 88-108MHz. 5.2.EUT Configuration on Measurement The following equipment are installed on the emission Measurement to meet the commission requirements and operating regulations in a manner which tends to maximize its emission characteristics in normal application. 5.2.1.CAR MP3 PLAYER(EUT) Model Number : EM190F Serial Number : N/A Manufacturer : Shenzhen Yifang Digital Technologies Co., Ltd. 5.3.Operating Condition of EUT 5.3.1.Setup the EUT and simulator as shown as Section 4.1. 5.3.2.Turn on the power of all equipment. 5.3.3. Let the EUT work in TX mode (On with 1kHz signal ) measure it. The transmit frequency are 88.1, 88.3, 88.5, 88.7, 88.9MHz. We are select the lowest, Middle and highest frequency to transmitted. 5.4.Test Procedure The zero level was set without modulation. A small sample of the transmitter output was fed into the spectrum analyzer and above photo was taken. The vertical scale is set to 10dB per division; the horizontal scale is set to 20kHz per division. FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 15 of 21 5.5.Test Result The EUT does meet the FCC requirement. Reviewer : FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 16 of 21 APPENDIX I (Test Curves) FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 17 of 21 FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 18 of 21 FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 19 of 21 FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 20 of 21 FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494

Page 21 of 21 FCC ID:S7JEM190F ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE2005494


Document Created: 2005-05-09 09:58:38
Document Modified: 2005-05-09 09:58:38
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC