15C WPT Test Report

FCC ID: BCGA1895

Test Report

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FCCID_4048668

                                        PCTEST ENGINEERING LABORATORY, INC.
                                                           18855 Adams Court, Morgan Hill, CA 95037 USA
                                                               Tel. 410.290.6652 / Fax 410.290.6654
                                                                       http://www.pctest.com

                                                                MEASUREMENT REPORT
                                                                                  FCC Part 15C

  Applicant Name:                                                                                 Date of Testing:
  Apple Inc.                                                                                      9/13/2018-9/18/2018
  One Apple Park Way                                                                              Test Site/Location:
  Cupertino, CA 95014                                                                             PCTEST Lab. Morgan Hill, CA, USA
  United States                                                                                   Test Report Serial No.:
                                                                                                  1C1806220014-11.BCG


  FCC ID:                                                             BCGA1895
  APPLICANT:                                                          Apple Inc.




  Application Type:                                                   Certification
  Model/HVIN:                                                         A1895
  EUT Type:                                                           Tablet Device
  Operating Frequency:                                                127.77kHz
  FCC Classification:                                                 Part 15 Low Power Transmitter Below 1705 kHz (DCD)
  FCC Rule Part(s):                                                   FCC Part 15, Subpart C (15.207 & 15.209)
  Test Procedure(s):                                                  ANSI C63.10-2013, KDB 680106 D01 v02




  This equipment has been shown to be capable of compliance with the applicable technical standards as indicated in the measurement report
  and was tested in accordance with the measurement procedures specified in ANSI C63.10-2013 and KDB 558074 D01 v05. Test results
  reported herein relate only to the item(s) tested.

  I attest to the accuracy of data. All measurements reported herein were performed by me or were made under my supervision and are
  correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the
  qualifications of all persons taking them.




                                                                                                                                                                  Approved by:
FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
                                                                                                                                                                  Quality Manager
Test Report S/N:                   Test Dates:                     EUT Type:
                                                                                                                                                                  Page 1 of 24
1C1806220014-11.BCG                9/13/2018-9/18/2018             Tablet Device
© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


                                               T A B L E                        O F             C O N T E N T S

1.0       INTRODUCTION ............................................................................................................................. 3
          1.1         Scope .................................................................................................................................... 3
          1.2         PCTEST Test Location ......................................................................................................... 3
          1.3         Test Facility / Accreditations ................................................................................................. 3
2.0       PRODUCT INFORMATION............................................................................................................. 4
          2.1         Equipment Description .......................................................................................................... 4
          2.2         Device Capabilities ................................................................................................................ 4
          2.3         Test Support Equipment ....................................................................................................... 4
          2.4         Test Configuration ................................................................................................................. 5
          2.5         Software and Firmware ......................................................................................................... 5
          2.6         EMI Suppression Device(s)/Modifications ............................................................................. 5
3.0       DESCRIPTION OF TESTS ............................................................................................................. 6
          3.1         Evaluation Procedure ............................................................................................................ 6
          3.2         AC Line Conducted Emissions .............................................................................................. 6
          3.3         Radiated Emissions .............................................................................................................. 7
          3.4         Environmental Conditions ..................................................................................................... 7
4.0       SAMPLE CALCULATIONS ............................................................................................................. 8
          4.1         Radiated Emission Measurement Sample Calculation ......................................................... 8
5.0       MEASUREMENT UNCERTAINTY .................................................................................................. 9
6.0       TEST EQUIPMENT CALIBRATION DATA ................................................................................... 10
7.0       TEST Data ..................................................................................................................................... 11
          7.1         Summary ............................................................................................................................. 11
          7.2         Occupied Bandwidth ........................................................................................................... 12
          7.3         Radiated Measurement Data .............................................................................................. 14
          7.4         Line-Conducted Test Data .................................................................................................. 20
8.0       CONCLUSION .............................................................................................................................. 24




                                                                                                                                                                  Approved by:
FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
                                                                                                                                                                  Quality Manager
Test Report S/N:                   Test Dates:                     EUT Type:
                                                                                                                                                                  Page 2 of 24
1C1806220014-11.BCG                9/13/2018-9/18/2018             Tablet Device
© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


1.0              INTRODUCTION

1.1           Scope
Measurement and determination of electromagnetic emissions (EMC) of radio frequency devices including
intentional and/or unintentional radiators for compliance with the technical rules and regulations of the Federal
Communications Commission and the Innovation, Science and Economic Development Canada.

1.2           PCTEST Test Location
These measurement tests were conducted at the PCTEST Engineering Laboratory, Inc. facility located at 18855
Adams Court, Morgan Hill, CA 95037. The measurement facility is compliant with the test site requirements
specified in ANSI C63.4-2014 and KDB 414788 D01 v01.

1.3           Test Facility / Accreditations
Measurements were performed at PCTEST Engineering Lab located in Morgan Hill, CA 95037, U.S.A.

•     PCTEST is an ISO 17025-2005 accredited test facility under the American Association for Laboratory
      Accreditation (A2LA) with Certificate number 2041.02 for Specific Absorption Rate (SAR), Hearing Aid
      Compatibility (HAC) testing, where applicable, and Electromagnetic Compatibility (EMC) testing for FCC and
      Innovation, Science, and Economic Development Canada rules.

•     PCTEST TCB is a Telecommunication Certification Body (TCB) accredited to ISO/IEC 17065-2012 by A2LA
      (Certificate number 2041.03) in all scopes of FCC Rules and ISED Standards (RSS).

•     PCTEST facility is a registered (22831) test laboratory with the site description on file with ISED.




                                                                                                                                                                  Approved by:
FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
                                                                                                                                                                  Quality Manager
Test Report S/N:                   Test Dates:                     EUT Type:
                                                                                                                                                                  Page 3 of 24
1C1806220014-11.BCG                9/13/2018-9/18/2018             Tablet Device
© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


2.0              PRODUCT INFORMATION

2.1           Equipment Description
The Equipment Under Test (EUT) is the Tablet Device FCC ID: BCGA1895. The test data contained in this
report pertains only to the emissions due to the wireless power transfer function of the EUT.

Test Device Serial No.: DLXX5049L3XD

2.2          Device Capabilities
This device supports different charging rate

                                                                                    Charging Rate
                                                                                        10C
                                                                                         3C
                                                                                        2.5C
                                                                                         1C
                                                                         Table 2-1. Charging Rate

2.3          Test Support Equipment




                                                           Table 2-2. Test Support Equipment Used




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FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
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© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


2.4           Test Configuration
The Tablet Device, FCC ID: BCGA1895, contains a proprietary wireless power transfer (WPT) module, which
uses a magnetic inductive charging system. This feature allows for the Apple Pencil to be wirelessly charged
using the tablet device.

All equipment is placed on the test table top and arranged in a typical configuration in accordance with ANSI
C63.10-2013. For more information, please see Section 7.3 for test data and the test setup photos document for
the test setup photographs.

Only the worst case charging rate was reported in this test report.

The EUT was manipulated through three orthogonal planes of X-orientation (flatbed), Y-orientation (landscape),
and Z-orientation (portrait) during the testing. Only the worst case emissions were reported in this test report.

For AC line conducted and radiated test below 1GHz, with the Apple Pencil wirelessly charging while attached to
Tablet Device, following configuration were investigated and worst case was reported.
        - Tablet Device powered by AC/DC adaptor via USB-C cable with wire charger
        - Tablet Device powered by host PC via USB-C cable with wire charger


2.5          Software and Firmware
The test was conducted with firmware version 16B64 installed on the EUT.

2.6           EMI Suppression Device(s)/Modifications
No EMI suppression device(s) were added and no modifications were made during testing.




                                                                                                                                                                  Approved by:
FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
                                                                                                                                                                  Quality Manager
Test Report S/N:                   Test Dates:                     EUT Type:
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© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


3.0              DESCRIPTION OF TESTS

3.1           Evaluation Procedure
The measurement procedures described in the American National Standard of Procedures for Compliance
Testing of Unlicensed Wireless Devices (ANSI C63.10-2013) and the guidance provided in KDB 558074 D01 v05
were used in the measurement of the EUT.

Deviation from measurement procedure…………………………………………….....................................None

3.2           AC Line Conducted Emissions
The line-conducted facility is located inside a 7m x 3.66m x 2.7m shielded enclosure. The shielded enclosure is
manufactured by AP Americas. The shielding effectiveness of the shielded room is in accordance with MIL-Std-
285 or NSA 65-6. A 1m x 1.5m wooden table 80cm high is placed 40cm away from the vertical wall and 80cm
away from the sidewall of the shielded room. Two 10kHz-30MHz, 50Ω/50µH Line-Impedance Stabilization
Networks (LISNs) are bonded to the shielded room floor. Power to the LISNs is filtered by external high-current
high-insertion loss power line filters. The external power line filter is EPCOS 2X60A Power Line Filter (100dB
Attenuation, 14kHz-18GHz) and the two EPCOs 2X48A filters (100dB Minimum Insertion Loss, 14kHz - 10GHz).
These filters attenuate ambient signal noise from entering the measurement lines. These filters are also bonded
to the shielded enclosure.

The EUT is powered from one LISN and the support equipment is powered from the second LISN. If the EUT is a
DC-powered device, power will be derived from the source power supply it normally will be powered from and this
supply line(s) will be connected to the second LISN. All interconnecting cables more than 1 meter were shortened
to a 1 meter length by non-inductive bundling (serpentine fashion) and draped over the back edge of the test
table. All cables were at least 40cm above the horizontal reference ground plane. Power cables for support
equipment were routed down to the second LISN while ensuring that that cables were not draped over the second
LISN.

Sufficient time for the EUT, support equipment, and test equipment was allowed in order for them to warm up to
their normal operating condition. The RF output of the LISN was connected to the spectrum analyzer and
exploratory measurements were made to determine the frequencies producing the maximum emission from the
EUT. The spectrum was scanned from 150kHz to 30MHz with a spectrum analyzer. The detector function was set
to peak mode for exploratory measurements while the bandwidth of the analyzer was set to 10kHz. The EUT,
support equipment, and interconnecting cables were arranged and manipulated to maximize each emission. Once
the worst case emissions have been identified, the one EUT cable configuration/arrangement and mode of
operation that produced these emissions is used for final measurements on the same test site. The analyzer is set
to CISPR quasi-peak and average detectors with a 9kHz resolution bandwidth for final measurements.

Line conducted emissions test results are shown in Section 7.4. Automated test software was used to perform
the AC line conducted emissions testing. Automated measurement software utilized is Rohde & Schwarz EMC32,
Version 10.20.01.




                                                                                                                                                                  Approved by:
FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
                                                                                                                                                                  Quality Manager
Test Report S/N:                   Test Dates:                     EUT Type:
                                                                                                                                                                  Page 6 of 24
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© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


3.3           Radiated Emissions
The radiated test facilities consisted of an indoor 3 meter semi-anechoic chamber used for final measurements
and exploratory measurements, when necessary. The measurement area is contained within the semi-anechoic
chamber which is shielded from any ambient interference. The test site inside the chamber is a 6m x 5.2m
elliptical, obstruction-free area in accordance with Figure 5.7 of Clause 5 in ANSI C63.4-2014. Absorbers are
arranged on the floor between the turn table and the antenna mast in such a way so as to maximize the reduction
of reflections for measurements above 1GHz. An 80cm tall test table made of Styrodur is placed on top of the turn
table. For measurements above 1GHz, an additional Styrodur pedestal is placed on top of the test table to bring
the total table height to 1.5m.

Per KDB 414788, radiated emission test sites other than open-field test sites (e.g., shielded anechoic chambers),
may be employed for emission measurements below 30MHz if characterized so that the measurements
correspond to those obtained at an open-field test site. To determine test site equivalency, a reference sample
transmitting at 149kHz was measured on an open field test site (asphalt with no ground plane) and then
measured in the 3m semi-anechoic chamber. A calibrated 60cm loop antenna was rotated about its vertical axis
while the reference device was rotated through the X, Y and Z axis in order to capture the worst case level. A
maximum deviation of 2.77dB at 149kHz was measured when comparing the 3 meter semi-anechoic chamber to
the open field site.

For all measurements, the spectrum was scanned through all EUT azimuths and from 1 to 4 meter receive
antenna height using a broadband antenna from 30MHz up to the upper frequency shown in 15.33 depending on
the highest frequency generated or used in the device or on which the device operates or tunes. For frequencies
above 1GHz, linearly polarized double ridge horn antennas were used. For frequencies below 30MHz, a
calibrated loop antenna was used. When exploratory measurements were necessary, they were performed at 1
meter test distance inside the semi-anechoic chamber using broadband antennas, broadband amplifiers, and
spectrum analyzers to determine the frequencies and modes producing the maximum emissions. Sufficient time
for the EUT, support equipment, and test equipment was allowed in order for them to warm up to their normal
operating condition. The test set-up was placed on top of the 1 x 1.5 meter table. The EUT, support equipment,
and interconnecting cables were arranged and manipulated to maximize each emission. Appropriate precaution
was taken to ensure that all emissions from the EUT were maximized and investigated. The system configuration,
mode of operation, turntable azimuth, and receive antenna height was noted for each frequency found.

Final measurements were made in the semi-anechoic chamber using calibrated, linearly polarized broadband and
horn antennas. The test setup was configured to the setup that produced the worst case emissions. The spectrum
analyzer was set to investigate all frequencies required for testing to compare the highest radiated disturbances
with respect to the specified limits. The turntable containing the EUT was rotated through 360 degrees and the
height of the receive antenna was varied 1 to 4 meters and stopped at the azimuth and height producing the
maximum emission. Each emission was maximized by changing the orientation of the EUT through three
orthogonal planes and changing the polarity of the receive antenna, whichever produced the worst-case
emissions.

3.4           Environmental Conditions
The temperature is controlled within range of 15oC to 35oC. The relative humidity is controlled within range of 10%
to 75%. The atmospheric pressure is monitored within the range 86-106kPa (860-1060mbar).




                                                                                                                                                                  Approved by:
FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
                                                                                                                                                                  Quality Manager
Test Report S/N:                   Test Dates:                     EUT Type:
                                                                                                                                                                  Page 7 of 24
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© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


4.0              SAMPLE CALCULATIONS


4.1           Radiated Emission Measurement Sample Calculation
              @ 66.7 MHz
                           Class B limit                                          = 100 V/m = 40.0 dBV/m
                           Reading                                                = - 76.0 dBm (calibrated level)
                           Convert to dBV                                        = - 76.0 + 107 = 31.0 dBV
                           Antenna Factor + Cable Loss                            = 5.8 dB/m
                                                                    Total         = 36.8 dBV/m


                           Margin                                                 = 36.8 - 40.0 = - 3.2 dB
                                                                                  = 3.2 dB below limit




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FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
                                                                                                                                                                  Quality Manager
Test Report S/N:                   Test Dates:                     EUT Type:
                                                                                                                                                                  Page 8 of 24
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© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


5.0              MEASUREMENT UNCERTAINTY

The measurement uncertainties shown below were calculated in accordance with the requirements of
ANSI C63.10-2013. All measurement uncertainty values are shown with a coverage factor of k = 2 to indicate a
95% level of confidence. The measurement data shown herein meets or exceeds the UCISPR measurement
uncertainty values specified in CISPR 16-4-2 and, thus, can be compared directly to specified limits to determine
compliance.


                                                   Contribution                                        Expanded Uncertainty (±dB)

                                      Line Conducted Disturbance                                                             3.09

                                    Radiated Disturbance (<1GHz)                                                             4.98

                                    Radiated Disturbance (>1GHz)                                                             5.07




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FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
                                                                                                                                                                  Quality Manager
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                                                                                                                                                                  Page 9 of 24
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© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


6.0              TEST EQUIPMENT CALIBRATION DATA

Test Equipment Calibration is traceable to the National Institute of Standards and Technology (NIST).




                                            Table 6-1. Annual Test Equipment Calibration Schedule

Note:

      1. For equipment listed above that has a calibration date or calibration due date that falls within the test date
         range, care was taken to ensure that this equipment was used after the calibration date and before the
         calibration due date.

      2. Equipment with a calibration date of “N/A” shown in this list was not used to make direct calibrated
         measurements.




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FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
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                                                                                                                                                                  Page 10 of 24
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© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


7.0              TEST DATA

7.1           Summary


         Company Name:                               Apple Inc.

         FCC ID:                                     BCGA1895




                              FCC Sections                                         Description                                              Result


                                     2.1049                                 Occupied Bandwidth                                                N/A

                                     15.207                            Line Conducted Emissions                                             PASS

                                     15.209                                  Radiated Emissions                                             PASS

                                                               Table 7-1. Summary of Test Results




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FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
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                                                                                                                                                                  Page 11 of 24
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© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
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7.2           Occupied Bandwidth
§2.1049

Test Overview

The occupied bandwidth, that is the frequency bandwidth such that, below its lower and above its upper
frequency limits, the mean powers radiated are each equal to 0.5 percent of the total mean power radiated by a
given emission shall be measured. All modes of operation were investigated and the worst case configuration
results are reported in this section.

Test Settings

      1. The signal analyzer’s automatic bandwidth measurement capability was used to perform the 99%
             occupied bandwidth.
      2. RBW = 100Hz
      3. VBW ≥ 3 x RBW
      4. Detector = Peak
      5. Trace mode = max hold
      6. Sweep = auto couple
      7. The trace was allowed to stabilize


Test Setup
The EUT and measurement equipment were set up as shown in the diagram below.




                                                                            Figure 7-1. Test Setup




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FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
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Test Report S/N:                   Test Dates:                     EUT Type:
                                                                                                                                                                  Page 12 of 24
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microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


                                                                Plot 7-1. Occupied Bandwidth Plot




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                                                                                                                                                                  Page 13 of 24
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© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
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7.3           Radiated Measurement Data
§15.205 & 15.209

Limit


                                           Frequency                       Field Strength Limit                           Measurement
                                              [MHz]                               [V/m]                                distance (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
                                                > 960                  500                       3
                                                     Table 7-2. Radiated Limits (Section 15.209)

Test Procedure Used

ANSI C63.10-2013

Test Settings
             Quasi-Peak Field Strength Measurements
                    1. Analyzer frequency set to the frequency of the radiated spurious emission of interest
                    2. Per the CISPR 16-1-1 standard, the RBW’s are as follows:
                           9kHz – 150kHz (Band A): 200Hz
                           150kHz – 30MHz (Band B): 9kHz
                           30MHz – 1GHz (Band C): 120kHz
                    3. Detector = quasi-peak
                    4. Sweep time = auto couple
                    5. Trace mode = max hold
                    6. Trace was allowed to stabilize


Test Setup
The EUT and measurement equipment were set up as shown in the diagram below.




                                                                                                                                                                  Approved by:
FCC ID: BCGA1895                                                                   FCC Pt. 15C MEASUREMENT TEST REPORT
                                                                                                                                                                  Quality Manager
Test Report S/N:                   Test Dates:                     EUT Type:
                                                                                                                                                                  Page 14 of 24
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© 2018 PCTEST Engineering Laboratory, Inc.                                                                                                                                      V 8.4 08/10/2018
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


                                                           Figure 7-2. Radiated Test Setup < 30MHz




                                                            Figure 7-3. Radiated Test Setup < 1GHz

Sample Calculation:

      o      Field Strength Level [dBV/m] = Analyzer Level [dBm] + 107 + AFCL [dB]

             Notes:

              o      AFCL = Antenna Factor [dB] + Cable Loss [dB]




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Notes:

1. The fundamental emission is denoted with a * next to the frequency.
2. All modes of operation were investigated, and the worst-case emissions are reported.
3. Radiated emissions were measured from 9kHz –1GHz.
4. The radiated limits for intentional radiators are shown in Table 7-2.
5. All readings are calibrated by a signal generator with accuracy traceable to the National Institute of Standards
      and Technology (NIST).
6. AFCL (dB/m) = Antenna Factor (dB/m) + Cable Loss (dB)
7. Level (dBV/m) = Analyzer Reading (dBm) + AFCL (dB/m) + 107
8. Margin (dB) = Field strength (dBV/m) – Limit (dBV/m)
9. Radiated measurements below 30MHz were measured using a loop antenna. The antenna was positioned in
      three orthogonal planes (X front, Y side, Z top) and the position with the highest emission level is reported
      above.
10. For measurements made below 1GHz, the results recorded using the broadband antenna are known to
      correlate with the results obtained by using a tuned dipole with an acceptable degree of accuracy. The VSWR
      for the measurement antennas was found to be less than 2:1.
11. Calibrated low-loss microwaves cables are used.
12. The wide spectrum spurious emissions plots shown on the following pages are used only for the purpose of
      emission identification. These plots were taken without using any correction factors. Any emissions found to
      be within 20dB of the limit (after applying the correction factor) are fully investigated and the results are shown
      in Table 7-3 and Table 7-4.
13. The “-“ shown in the tables below are used to denote noise floor measurements.
14. No significant emissions were found in the 90 – 110kHz restricted band.
15. All charging rates were investigated and only the worst case is reported




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Radiated Restricted Band Edge Measurements
§15.205 §15.209




                                         Plot 7-2. Radiated Restricted Lower Band Edge Measurement (Peak)




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Radiated Spurious Emissions Measurements
§15.209


                              130
                              120

                              100

                               80
            Level in dBµV/m




                                                                                                                                                                                                    FCC Limit

                               60

                               40

                               20

                                   0



                                   9k             20        30        50               100k          200     300        500             1M           2M      3M         5M             10M          20    30M

                                                                                                               Frequency in Hz

                                   Preview Result 1V-PK+                   Preview Result 1H-PK+                   Critical_Freqs PK+                 FCC Limit                Final_Result PK+

                                            Plot 7-3. Radiated Spurious Plot from 9kHz – 30MHz (Loop Antenna X & Y)



                              80


                              70


                              60
                                                                                                                                                                                     FCC Part 15C 30MHz-1GHz
                              50                                                                                                                                                   FCC Part 15C 30MHz-1GHz_-6
            Level in dBµV/m




                              40


                              30


                              20

                              10


                               0



                              30M                          50    60               80          100M                             200                  300           400        500                  800      1G

                                                                                                               Frequency in Hz

                                   Preview Result 1H-PK+                          Preview Result 1V-PK+                              Critical_Freqs PK+
                                   FCC Part 15C 30MHz-1GHz                        FCC Part 15C 30MHz-1GHz_-6                         Final_Result QPK

                                                            Plot 7-4. Radiated Spurious Plot above 30MHz (Pol. H & V)




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Radiated Spurious Emissions Measurements
§15.209

                                                                                Turntable                                      Field
       Frequency                                        Ant. Pol.                                        AFCL                                        Limit                Margin
                                 Detector                                        Azimuth                                     Strength
         [MHz]                                           [X/Y]                                          [dB/m]                                     [dBμV/m]                [dB]
                                                                                 [degree]                                   [dBµV/m]
           0.128 *                   Peak                      X                      218                 19.32                 80.04                 105.48               -25.44
           0.3817                    Peak                      X                      217                 19.26                 57.26                  95.97               -38.71
           0.6346                    Peak                      X                      211                 19.49                 49.79                  71.55               -21.76
           0.8913                    Peak                      X                      198                 19.59                 45.80                  68.60               -22.80
           1.1481                    Peak                      X                      214                 19.71                 42.57                  66.40               -23.83
           1.4019                    Peak                      X                      217                 19.73                 39.96                  64.67               -24.71
           1.6586                    Peak                      X                       14                 19.73                 36.24                  63.21               -26.97
                                         Table 7-3. Radiated Measurements Below 30MHz at 3-meters

      * WPT fundamental TX


                                                                          Antenna                Turntable                               Field
    Frequency                                      Ant. Pol.                                                           AFCL                                   Limit  Margin
                            Detector                                       Height                 Azimuth                              Strength
      [MHz]                                         [H/V]                                                             [dB/m]                                [dBμV/m] [dB]
                                                                            [cm]                  [degree]                             [dBµV/m]
         48.53                  Peak                     V                  100.00                   23.00             -21.14              27.43                40.00           -12.57
         78.89                  Peak                     V                  100.00                  137.00             -19.51              24.83                40.00           -15.17
        118.90                  Peak                     V                  100.00                   41.00             -17.43              23.94                43.52           -19.58
        194.61                  Peak                     H                  100.00                  262.00             -19.65              25.41                43.52           -18.11
        273.66                  Peak                     H                  100.00                  300.00             -16.90              21.61                46.02           -24.41
        389.19                  Peak              H          100.00     17.00    -13.50    21.97                                                                46.02           -24.05
                                         Table 7-4. Radiated Measurements Above 30MHz at 3-meters




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7.4           Line-Conducted Test Data
§15.207

Test Overview and Limit

All AC line conducted spurious emissions are measured with a receiver connected to a grounded LISN while the
EUT is operating at its maximum duty cycle, at maximum power, and at the appropriate frequencies. All data rates
and modes were investigated for conducted spurious emissions. Only the conducted emissions of the
configuration that produced the worst case emissions are reported in this section.

All conducted emissions must not exceed the limits shown in the table below, per Section 15.


                             Frequency of emission                                               Conducted Limit (dBV)
                                    (MHz)
                                                                                      Quasi-peak                                      Average
                                          0.15 – 0.5                                   66 to 56*                                      56 to 46*
                                           0.5 – 5                                        56                                             46
                                            5 – 30                                        60                                             50
                                                                      Table 7-5. Conducted Limits

*Decreases with the logarithm of the frequency.

Test Procedures Used

ANSI C63.10-2013, Section 6.2

Test Settings

             Quasi-Peak Field Strength Measurements

             1. Analyzer center frequency was set to the frequency of the spurious emission of interest
             2. RBW = 9kHz (for emissions from 150kHz – 30MHz)
             3. Detector = quasi-peak
             4. Sweep time = auto couple
             5. Trace mode = max hold
             6. Trace was allowed to stabilize
             Average Field Strength Measurements

             1. Analyzer center frequency was set to the frequency of the spurious emission of interest
             2. RBW = 9kHz (for emissions from 150kHz – 30MHz)
             3. Detector = RMS
             4. Sweep time = auto couple
             5. Trace mode = max hold
             6. Trace was allowed to stabilize



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Test Setup

The EUT and measurement equipment were set up as shown in the diagram below.




                                                   Figure 7-4. Test Instrument & Measurement Setup

Test Notes

1.        All modes of operation were investigated and the worst-case emissions are reported using mid channel.
          The emissions found were not affected by the choice of channel used during testing.
2.        The limit for an intentional radiator from 150kHz to 30MHz are specified in Part 15.207.
3.        Corr. (dB) = Cable loss (dB) + LISN insertion factor (dB)
4.        QP/AV Level (dBV) = QP/AV Analyzer/Receiver Level (dBV) + Corr. (dB)
5.        Margin (dB) = QP/AV Limit (dBV) - QP/AV Level (dBV)
6.        Traces shown in plot are made using a peak detector.
7.        Deviations to the Specifications: None.
8.        The spectrum is investigated using a peak detector and final measurements are recorded using CISPR
          quasi peak detector.




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                            88

                            80

                            70
                                                                                                                                               FCC Part 15 Class B Voltage on Mains QP
                            60
            Level in dBµV




                                                                                                                                               FCC Part 15 Class B Voltage on Mains AV
                            50

                            40

                            30

                            20


                            8
                            150k                   300   400   500    800    1M                    2M           3M    4M   5M     6        8      10M                  20M         30M

                                                                                              Frequency in Hz

                                 Preview Result 2-AVG                       Preview Result 1-QPK                                Critical_Freqs AVG
                                 Critical_Freqs QPK                         FCC Part 15 Class B Voltage on Mains QP             FCC Part 15 Class B Voltage on Mains AV
                                 Final_Result QPK                           Final_Result AVG

                                                         Plot 7-5. Line Conducted Plot (L1, with AC/DC Adapter)


                                                                                          μ               μ           μ




                                                Table 7-6. Line Conducted Measurements (L1, with AC/DC Adapter)




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                                                                                                                                                                     Page 22 of 24
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                            80

                            70
                                                                                                                                               FCC Part 15 Class B Voltage on Mains QP
                            60
                                                                                                                                               FCC Part 15 Class B Voltage on Mains AV
            Level in dBµV




                            50

                            40

                            30

                            20

                            10

                            0
                            150k                   300   400   500    800    1M                    2M           3M    4M   5M     6        8      10M                  20M         30M

                                                                                              Frequency in Hz

                                 Preview Result 2-AVG                       Preview Result 1-QPK                                Critical_Freqs AVG
                                 Critical_Freqs QPK                         FCC Part 15 Class B Voltage on Mains QP             FCC Part 15 Class B Voltage on Mains AV
                                 Final_Result QPK                           Final_Result AVG

                                                         Plot 7-6. Line Conducted Plot (N, with AC/DC Adapter)


                                                                                          μ               μ           μ




                                                 Table 7-7. Line Conducted Measurements (N, with AC/DC Adapter)




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                                                                                                                                                                     Page 23 of 24
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8.0              CONCLUSION

The       data        collected          relate        only       the      item(s)         tested         and       show         that       the      Apple          Tablet         Device
FCC ID: BCGA1895 is in compliance with Part 15 Subpart C (15.247) of the FCC Rules.




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                                                                                                                                                                  Page 24 of 24
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Document Created: 2019-03-24 10:32:31
Document Modified: 2019-03-24 10:32:31

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