Test report II

FCC ID: 2AHYVSTUDIO

Test Report

Download: PDF
FCCID_4220418

® A\G & 7 A immieg Attestation of Global Compliance Report No.: AGC00947190201FEO3 Page 41 of 69 10.3. LIMITS AND MEASUREMENT RESULT 15.209(a) Limit in the below table has to be followed Frequencies Field Strength Measurement Distance (MHz) {micorvolts/meter) {meters) 0.009~0.490 2400/F (KHz) 300 0.490~1.705 24000/F (KHz) 30 1.705~30.0 30 30 30~88 100 3 88~216 150 3 216~960 200 3 Above 960 500 3 Note: All modes were tested For restricted band radiated emission, the test records reported below are the worst result compared to other modes. The results ’m,Etion| o thisfesest report refer only to the sample(s) tested unless otherwise stated and the sample(s) are retained for 30 days only. The document is issued by/A C§€ this docu/mo it cannot be reproduced except in full with our prior written permission. The more details and the authenticity of the report will be confirmed tfittp://www.agc-% t.com. s AGC o = O Attestationt »mpliance Tel: +86—755 2908 1955 Fax: +86—755 2600 8484 E—mail: agc@agc—cert.com @ 400 089 2118 & Add: 2/F. , Building 2, No.1—4, Chaxi Sanwei Technical Industrial Park, Gushu, Xixiang, Bacan District, Shenzhen, Guangdong China

Report No.: AGC00947190201FE03 Page 42 of 69 RADIATED EMISSION BELOW 30MHZ No emission found between lowest internal used/generated frequencies to 30MHz. RADIATED EMISSION BELOW 1GHZ EUT Bluetooth Headphone Model Name Studio BT Relative Temperature 25.1°C 55.5% Humidity Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 4 Antenna Horizontal RESULT: PASS

Report No.: AGC00947190201FE03 Page 43 of 69 EUT Bluetooth Headphone Model Name Studio BT Relative Temperature 25.1°C 55.5% Humidity Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 4 Antenna Vertical RESULT: PASS Note: 1. Factor=Antenna Factor + Cable loss, Margin=Measurement-Limit. 2 All test modes had been pre-tested. The mode 4 is the worst case and recorded in the report.

Report No.: AGC00947190201FE03 Page 44 of 69 RADIATED EMISSION ABOVE 1GHZ EUT Bluetooth Headphone Model Name Studio BT Temperature 24.6°C Relative Humidity 54.7% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 1 Antenna Horizontal Meter Emission Frequency Factor Limits Margin Reading Level Value Type (MHz) (dBμV) (dB) (dBμV/m) (dBμV/m) (dB) 4804.062 47.81 3.76 51.57 74.00 -22.43 peak 4804.062 34 3.70 37.7 54.00 -16.3 AVG 7206.093 44.46 7.23 51.69 74.00 -22.31 peak 7206.093 32.39 7.15 39.54 54.00 -14.46 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. EUT Bluetooth Headphone Model Name Studio BT Temperature 24.6°C Relative Humidity 54.7% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 1 Antenna Vertical Meter Emission Frequency Factor Limits Margin Reading Level Value Type (MHz) (dBμV) (dB) (dBμV/m) (dBμV/m) (dB) 4804.062 47.81 4.89 52.7 74.00 -21.3 peak 4804.062 35.72 4.29 40.01 54.00 -13.99 AVG 7206.093 45.64 8.23 53.87 74.00 -20.13 peak 7206.093 32.31 8.57 40.88 54.00 -13.12 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier.

Report No.: AGC00947190201FE03 Page 45 of 69 EUT Bluetooth Headphone Model Name Studio BT Temperature 24.6°C Relative Humidity 54.7% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 2 Antenna Horizontal Meter Emission Frequency Factor Limits Margin Reading Level Value Type (MHz) (dBμV) (dB) (dBμV/m) (dBμV/m) (dB) 4882.062 47.81 3.83 51.64 74.00 -22.36 peak 4882.062 34.72 3.05 37.77 54.00 -16.23 AVG 7323.093 44.42 7.34 51.76 74.00 -22.24 peak 7323.093 32.31 7.30 39.61 54.00 -14.39 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. EUT Bluetooth Headphone Model Name Studio BT Temperature 24.6°C Relative Humidity 54.7% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 2 Antenna Vertical Meter Emission Frequency Factor Limits Margin Reading Level Value Type (MHz) (dBμV) (dB) (dBμV/m) (dBμV/m) (dB) 4882.062 47.81 4.96 52.77 74.00 -21.23 peak 4882.062 35.72 4.36 40.08 54.00 -13.92 AVG 7323.093 45.64 8.3 53.94 74.00 -20.06 peak 7323.093 32.31 8.64 40.95 54.00 -13.05 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier.

Report No.: AGC00947190201FE03 Page 46 of 69 EUT Bluetooth Headphone Model Name Studio BT Temperature 24.6°C Relative Humidity 54.7% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 3 Antenna Horizontal Meter Emission Frequency Reading Factor Level Limits Margin Value Type (MHz) (dBμV) (dB) (dBμV/m) (dBμV/m) (dB) 4960.062 47.81 3.90 51.71 74.00 -22.29 peak 4960.062 33.96 3.88 37.84 54.00 -16.16 AVG 7440.093 45.64 6.19 51.83 74.00 -22.17 peak 7440.093 33.6 6.08 39.68 54.00 -14.32 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. EUT Bluetooth Headphone Model Name Studio BT Relative Temperature 24.6°C 54.7% Humidity Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 3 Antenna Vertical Meter Emission Frequency Reading Factor Level Limits Margin Value Type (MHz) (dBμV) (dB) (dBμV/m) (dBμV/m) (dB) 4960.062 47.81 3.93 51.74 74.00 -22.26 peak 4960.062 34.05 3.82 37.87 54.00 -16.13 AVG 7440.093 45.64 6.22 51.86 74.00 -22.14 peak 7440.093 33.61 6.10 39.71 54.00 -14.29 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. RESULT: PASS Note: Other emissions from 1G to 25 GHz are considered as ambient noise. No recording in the test report. Factor=Antenna Factor+ Cable loss-Amplifier gain, Over=Measure-Limit. The “Factor” value can be calculated automatically by software of measurement system. All test modes had been tested. The GFSK modulation is the worst case and recorded in the report.

Report No.: AGC00947190201FE03 Page 47 of 69 TEST RESULT FOR RESTRICTED BANDS REQUIREMENTS EUT Bluetooth Headphone Model Name Studio BT Temperature 25.2°C Relative Humidity 55.5% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 1 Antenna Horizontal PK AV RESULT: PASS

Report No.: AGC00947190201FE03 Page 48 of 69 EUT Bluetooth Headphone Model Name Studio BT Temperature 25.2°C Relative Humidity 55.5% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 1 Antenna Vertical PK AV RESULT: PASS

Report No.: AGC00947190201FE03 Page 49 of 69 EUT Bluetooth Headphone Model Name Studio BT Temperature 25.2°C Relative Humidity 55.5% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 3 Antenna Horizontal PK AV RESULT: PASS

Report No.: AGC00947190201FE03 Page 50 of 69 EUT Bluetooth Headphone Model Name Studio BT Temperature 25.2°C Relative Humidity 55.5% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 3 Antenna Vertical PK AV RESULT: PASS Note:The factor had been edited in the “Input Correction” of the Spectrum Analyzer. So the Amplitude of test plots is equal to Reading level plus the Factor in dB. Use the A dB(μV) to represent the Amplitude. Use the F dB(μV/m) to represent the Field Strength. So A=F. All test modes had been pre-tested. The GFSK modulation is the worst case and recorded in the report.

Report No.: AGC00947190201FE03 Page 51 of 69 11. NUMBER OF HOPPING FREQUENCY 11.1. MEASUREMENT PROCEDURE 1. Place the EUT on the table and set it in transmitting mode. 2. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum analyzer. 3. Set the spectrum analyzer Start = 2.4GHz Stop = 2.4835GHz 4. Set the Spectrum Analyzer as RBW>=1%span, VBW>=RBW. 11.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) Same as described in section 8.2 11.3. MEASUREMENT EQUIPMENT USED The same as described in section 6 11.4. LIMITS AND MEASUREMENT RESULT Mode Channel. Number of Hopping Channel Verdict GFSK Hop 79 PASS Note: All modes were tested, only the worst case record in the report. Test Graph Graphs GFSK/Hop

Report No.: AGC00947190201FE03 Page 52 of 69 12. TIME OF OCCUPANCY (DWELL TIME) 12.1. MEASUREMENT PROCEDURE The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: 1. Span: Zero span, centered on a hopping channel. 2. RBW shall be≤channel spacing and where possible RBW should be set >> 1 / T, where T is the expected dwell time per channel. 3. Sweep: As necessary to capture the entire dwell time per hopping channel; where possible use a video trigger and trigger delay so that the transmitted signal starts a little to the right of the start of the plot. The trigger level might need slight adjustment to prevent triggering when the system hops on an adjacent channel. 4. Detector function: Peak. Trace: Max hold. 5. Use the marker-delta function to determine the transmit time per hop. 6. Using the following equation: 12.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) Same as described in section 8.2 12.3. MEASUREMENT EQUIPMENT USED The same as described in section 6

Report No.: AGC00947190201FE03 Page 53 of 69 12.4. LIMITS AND MEASUREMENT RESULT Limit Channel. Burst Width [ms/hop/ch] Dwell Time[ms] Verdict (ms) LCH 2.903 309.654 PASS 400 MCH 2.905 309.867 PASS 400 HCH 2.896 308.907 PASS 400 Note: The GFSK modulation is the worst case and recorded in the report.

Report No.: AGC00947190201FE03 Page 54 of 69 TEST PLOT OF LOW CHANNEL

Report No.: AGC00947190201FE03 Page 55 of 69 TEST PLOT OF MIDDLE CHANNEL

Report No.: AGC00947190201FE03 Page 56 of 69 TEST PLOT OF HIGH CHANNEL

Report No.: AGC00947190201FE03 Page 57 of 69 13. FREQUENCY SEPARATION 13.1. MEASUREMENT PROCEDURE 1. Place the EUT on the table and set it in transmitting mode 2. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum analyzer 3. Set Span = wide enough to capture the peaks of two adjacent channels Resolution (or IF) Bandwidth (RBW)  1% of the span Video (or Average) Bandwidth (VBW)  RBW; Sweep = auto; Detector function = peak; Trace = max hold 13.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) Same as described in section 6.2 13.3. MEASUREMENT EQUIPMENT USED The same as described in section 6.3 13.4. LIMITS AND MEASUREMENT RESULT Mode Channel. Carrier Frequency Separation [MHz] Verdict 8-DPSK Hop 1000 PASS Note: All modes were tested, only the worst case record in the report. Test Graph Graphs 8-DPSK/Hop

Report No.: AGC00947190201FE03 Page 58 of 69 14. FCC LINE CONDUCTED EMISSION TEST 14.1. LIMITS OF LINE CONDUCTED EMISSION TEST Maximum RF Line Voltage Frequency Q.P.( dBuV) Average( dBuV) 150kHz~500kHz 66-56 56-46 500kHz~5MHz 56 46 5MHz~30MHz 60 50 Note: 1. The lower limit shall apply at the transition frequency. 2. The limit decreases linearly with the logarithm of the frequency in the range 0.15 MHz to 0.50 MHz. 14.2. BLOCK DIAGRAM OF LINE CONDUCTED EMISSION TEST EUT & Support Units

Report No.: AGC00947190201FE03 Page 59 of 69 14.3. PRELIMINARY PROCEDURE OF LINE CONDUCTED EMISSION TEST 1. The equipment was set up as per the test configuration to simulate typical actual usage per the user’s manual. When the EUT is a tabletop system, a wooden table with a height of 0.8 meters is used and is placed on the ground plane as per ANSI C63.10 (see Test Facility for the dimensions of the ground plane used). When the EUT is a floor-standing equipment, it is placed on the ground plane which has a 3-12 mm non-conductive covering to insulate the EUT from the ground plane. 2. Support equipment, if needed, was placed as per ANSI C63.10. 3. All I/O cables were positioned to simulate typical actual usage as per ANSI C63.10. 4. All support equipments received AC120V/60Hz power from a LISN, if any. 5. The EUT received DC charging voltage by adapter which received 120V/60Hzpower by a LISN.. 6. The test program was started. Emissions were measured on each current carrying line of the EUT using a spectrum Analyzer / Receiver connected to the LISN powering the EUT. The LISN has two monitoring points: Line 1 (Hot Side) and Line 2 (Neutral Side). Two scans were taken: one with Line 1 connected to Analyzer / Receiver and Line 2 connected to a 50 ohm load; the second scan had Line 1 connected to a 50 ohm load and Line 2 connected to the Analyzer / Receiver. 7. Analyzer / Receiver scanned from 150 kHz to 30MHz for emissions in each of the test modes. 8. During the above scans, the emissions were maximized by cable manipulation. 9. The test mode(s) were scanned during the preliminary test. Then, the EUT configuration and cable configuration of the above highest emission level were recorded for reference of final testing. 14.4. FINAL PROCEDURE OF LINE CONDUCTED EMISSION TEST 1. EUT and support equipment was set up on the test bench as per step 2 of the preliminary test. 2. A scan was taken on both power lines, Line 1 and Line 2, recording at least the six highest emissions. Emission frequency and amplitude were recorded into a computer in which correction factors were used to calculate the emission level and compare reading to the applicable limit. If EUT emission level was less –2dB to the A.V. limit in Peak mode, then the emission signal was re-checked using Q.P and Average detector. 3. The test data of the worst case condition(s) was reported on the Summary Data page.

Report No.: AGC00947190201FE03 Page 60 of 69 14.5. TEST RESULT OF LINE CONDUCTED EMISSION TEST LINE CONDUCTED EMISSION TEST LINE 1-L

Report No.: AGC00947190201FE03 Page 61 of 69 LINE CONDUCTED EMISSION TEST LINE 2-N

Report No.: AGC00947190201FE03 Page 62 of 69 APPENDIX A: PHOTOGRAPHS OF TEST SETUP LINE CONDUCTED EMISSION TEST SETUP RADIATED EMISSION TEST SETUP

Report No.: AGC00947190201FE03 Page 63 of 69 RADIATED EMISSION ABOVE 1G TEST SETUP CONDUCTED TEST SETUP

Report No.: AGC00947190201FE03 Page 64 of 69 APPENDIX B: PHOTOGRAPHS OF TEST SETUP TOP VIEW OF EUT BOTTOM VIEW OF EUT

Report No.: AGC00947190201FE03 Page 65 of 69 FRONT VIEW OF EUT BACK VIEW OF EUT

Report No.: AGC00947190201FE03 Page 66 of 69 LEFT VIEW OF EUT RIGHT VIEW OF EUT

Report No.: AGC00947190201FE03 Page 67 of 69 OPEN VIEW OF EUT(FIGURE 1) VIEW OF BATTERY

Report No.: AGC00947190201FE03 Page 68 of 69 INTERNAL VIEW OF EUT(FIGURE 1) INTERNAL VIEW OF EUT(FIGURE 2) BT Antenna

Report No.: AGC00947190201FE03 Page 69 of 69 INTERNAL VIEW OF EUT(FIGURE 3) ----END OF REPORT----


Document Created: 2019-04-03 07:45:12
Document Modified: 2019-04-03 07:45:12
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC