test report II

FCC ID: 2AS32-MAXX

Test Report

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                                        Attestation of Global Compliance                                                                                       Report No.: AGC00141190402FEO03
                                                                                                                                                                                      Page 46 of 69


                                                  TEST RESULT FOR RESTRICTED BANDS REQUIREMENTS

    EUT                                    Noise cancelling headphones                                                             Model Name                              MAXX

    Temperature                            25°C                                                                                    Relative Humidity                       55.4%

    Pressure                               960hPa                                                                                  Test Voltage                            Normal Voltage

    Test Mode                              Mode 1                                                                                  Antenna                                 Horizontal


                                             BR Keysight Spectrum Analyzer— Swept S&
                                                                  ®      son     ac                                              aueh auto
                                             Start Freq 2.370000000 GHz                .                                  Avg Type: Log—Pwr
                                                                       PNO:. Fas @0 Trig: Free Run                       AvglHold:>100/100
                                                                      IFGain:Low     Atten: 20 dB

                                                              Ref 116.99 dBuV




                                              Start 2.37000 GHz                                                                         Stop 240500 GHz
                                              #Res BW 1.0 MHz                                  cRA n                             Sweep 1.000 ms (1001 pts)
                                             E wone TRe] sc                     x                  Y          FUNCTION      FUNCTION WDTH     FUNCTION VALUE

                                                                               2402 165 GHz     96.559 dBuV
                                                  N                            2.390 000 GHz    46.547 dBuV
                                              5




                                             BR Keysight Spectrum Analyzer— Swept S&
                                                                  &      son        ac

                                             Marker 1 2.401990000000 GHz               .                                  Avg Type: RMS
                                                                       SiGrasc ol3
                                                                                 G2 Trig: Free Run                       AvglHold:>100/100
                                                                      IFGain:Low     Aften: 20 dB

                                                              Ref 116.99 dBuV




                                              Start 2.37000 GHz                                                                         Stop 240500 GHz
                                              #Res BW 1.0 MHz                                  cRa LA                            Sweep 1.000 ms (1001 pts)
                                                  wobe TRC] SC.                 x                  Y          ruNCTION      FUNCTION Wt       Funcrion value
                                               EHEnEA                          2401 990 GHz     94.969 dBuV
                                              3N                               2.390 000 GHz    35.599 dBuV




    RESULT: PASS



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Attestatic it                       )      p|iance                          Tel: +86—755 2908 1955               Fax: +86—755 2600 8484                        E—mail: agc@age—cert.com   @ 400 089 2118
                          iN¥                                               Add: 2/F. , Building 2, No.1—4, Chaxi Sanwei Technical Industrial Park, Gushu, Xixiang, Bacan District, Shenzhen, Guangdong China


                                                             Report No.: AGC00141190402FE03
                                                                               Page 47 of 69




EUT            Noise cancelling headphones        Model Name          MAXX

Temperature    25°C                               Relative Humidity   55.4%
Pressure       960hPa                             Test Voltage        Normal Voltage
Test Mode      Mode 1                             Antenna             Vertical
                                             PK




                                             AV




RESULT: PASS


                                                             Report No.: AGC00141190402FE03
                                                                               Page 48 of 69




EUT            Noise cancelling headphones        Model Name          MAXX

Temperature    25°C                               Relative Humidity   55.4%
Pressure       960hPa                             Test Voltage        Normal Voltage
Test Mode      Mode 3                             Antenna             Horizontal
                                             PK




                                             AV




RESULT: PASS


                                                                           Report No.: AGC00141190402FE03
                                                                                             Page 49 of 69


EUT                  Noise cancelling headphones              Model Name             MAXX

Temperature          25°C                                     Relative Humidity      55.4%
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.: AGC00141190402FE03
                                                                                              Page 50 of 69


11. NUMBER OF HOPPING FREQUENCY
11.1. MEASUREMENT PROCEDURE
The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings:
1. Span: The frequency band of operation. Depending on the number of channels the device supports, it may
be necessary to divide the frequency range of operation across multiple spans, to allow the individual
channels to be clearly seen.
2. 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.
3. VBW ≥ RBW. Sweep: Auto. Detector function: Peak. Trace: Max hold.
4. Allow the trace to stabilize.
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
                                                           MEASUREMENT
   TOTAL NO. OF               LIMIT (NO. OF CH)                                             RESULT
                                                            (NO. OF CH)
 HOPPING CHANNEL
                                      >=15                         79                        PASS
                               TEST PLOT FOR NO. OF TOTAL CHANNELS




Note: The 8-DPSK modulation is the worst case and recorded in the report.


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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;
a second plot might be needed with a longer sweep time to show two successive hops on a channel.
4. Detector function: Peak. Trace: Max hold.
5. Use the marker-delta function to determine the transmit time per hop.
6. Repeat the measurement using a longer sweep time to determine the number of hops over the period
specified in the requirements. The sweep time shall be equal to, or less than, the period specified in the
requirements. Determine the number of hops over the sweep time and calculate the total number of hops in
the period specified in the requirements, using the following equation:
  (Number of hops in the period specified in the requirements) = (number of hops on spectrum analyzer) ×
(period specified in the requirements / analyzer sweep time)
7. The average time of occupancy is calculated from the transmit time per hop multiplied by the number of
hops in the period specified in the requirements.
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


12.4. LIMITS AND MEASUREMENT RESULT
                     Time of Pulse
                                          Number of hops in the period           Sweep Time              Limit
    Channel             for DH5
                                          specified in the requirements             (ms)                 (ms)
                          (ms)
      Low                 2.892                         26*4                       300.768                400
     Middle               2.890                         27*4                        312.12                400
      High                2.881                         27*4                        311.148               400

Note: The 8-DPSK modulation is the worst case and recorded in the report.


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TEST PLOT OF LOW CHANNEL


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TEST PLOT OF MIDDLE CHANNEL


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TEST PLOT OF HIGH CHANNEL


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13. FREQUENCY SEPARATION
13.1. MEASUREMENT PROCEDURE
The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings:
1. Span: Wide enough to capture the peaks of two adjacent channels.
2. 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.
3. Video (or average) bandwidth (VBW) ≥ RBW.
4. Sweep: Auto. e) Detector function: Peak. f) Trace: Max hold. g) Allow the trace to stabilize.
Use the marker-delta function to determine the separation between the peaks of the adjacent channels.
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
                            CHANNEL
                                                           LIMIT                           RESULT
      CHANNEL              SEPARATION
                                KHz                         KHz
                                                                                            Pass
     CH01-CH02                  1001             >=25 KHz or 2/3 20 dB BW
                              TEST PLOT FOR FREQUENCY SEPARATION




Note: The 8-DPSK modulation is the worst case and recorded in the report.


                                                                              Report No.: AGC00141190402FE03
                                                                                                Page 56 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.: AGC00141190402FE03
                                                                                            Page 57 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 15V power from adapter which received AC120V/60Hz power from 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.: AGC00141190402FE03
                                                                                       Page 58 of 69




14.5. TEST RESULT OF LINE CONDUCTED EMISSION TEST
                             Line Conducted Emission Test Line 1-L


                                                                          Report No.: AGC00141190402FE03
                                                                                            Page 59 of 69


                                  Line Conducted Emission Test Line 2-N




RESULT: PASS
Note: All the test modes had been tested, the mode 1 was the worst case. Only the data of the worst case
would be record in this test report.


                                   Report No.: AGC00141190402FE03
                                                     Page 60 of 69


APPENDIX A: PHOTOGRAPHS OF TEST SETUP
 RADIATED EMISSION TEST SETUP BELOW 1GHZ




 RADIATED EMISSION TEST SETUP ABOVE 1GHZ


                            Report No.: AGC00141190402FE03
                                              Page 61 of 69


CONDUCTED EMISSION TEST SETUP


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APPENDIX B: PHOTOGRAPHS OF EUT
        ALL VIEW OF EUT




        TOP VIEW OF EUT


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BOTTOM VIEW OF EUT




FRONT VIEW OF EUT


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BACK VIEW OF EUT




LEFT VIEW OF EUT


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RIGHT VIEW OF EUT




VIEW OF EUT(PORT)-1


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VIEW OF EUT(PORT)-2




 OPEN VIEW OF EUT


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INTERNAL VIEW OF EUT-1


                Antenna




INTERNAL VIEW OF EUT-2


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INTERNAL VIEW OF EUT-3




INTERNAL VIEW OF EUT-4


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INTERNAL VIEW OF EUT-5




INTERNAL VIEW OF EUT-6




----END OF REPORT----



Document Created: 2019-04-24 15:01:25
Document Modified: 2019-04-24 15:01:25

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