Bluetooth LE Test Report

FCC ID: A4R-X1

Test Report

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FCCID_1939261

FCC CFR47 PART 15 SUBPART C BLUETOOTH LOW ENERGY CERTIFICATION TEST REPORT FOR GLASS MODEL NUMBER: XEB FCC ID: A4R-X1 REPORT NUMBER: 13U14955-3, REVISION A ISSUE DATE: APRIL 12, 2013 Prepared for GOOGLE INC. 1600 AMPHITHEATRE PARKWAY MOUNTAIN VIEW CA, 94043, U.S.A Prepared by UL CCS 47173 BENICIA STREET FREMONT, CA 94538, U.S.A. TEL: (510) 771-1000 FAX: (510) 661-0888

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 Revision History Issue Rev. Date Revisions Revised By -- 04/05/13 Initial Issue T. LEE A 04/12/13 Correction to model on cover page G. Persons Page 2 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 TABLE OF CONTENTS 1. ATTESTATION OF TEST RESULTS ................................................................................. 4 TEST METHODOLOGY ............................................................................................................ 5 2. FACILITIES AND ACCREDITATION ................................................................................. 5 3. CALIBRATION AND UNCERTAINTY ................................................................................ 5 3.1. MEASURING INSTRUMENT CALIBRATION .............................................................. 5 3.2. SAMPLE CALCULATION ............................................................................................ 5 3.3. MEASUREMENT UNCERTAINTY ............................................................................... 5 4. EQUIPMENT UNDER TEST ............................................................................................... 6 4.1. DESCRIPTION OF EUT .............................................................................................. 6 4.2. MAXIMUM OUTPUT POWER...................................................................................... 6 4.3. DESCRIPTION OF CLASS II PERMISSIVE CHANGE ................................................ 6 4.4. DESCRIPTION OF AVAILABLE ANTENNAS .............................................................. 6 4.5. SOFTWARE AND FIRMWARE .................................................................................... 6 4.6. WORST-CASE CONFIGURATION AND MODE .......................................................... 6 4.7. DESCRIPTION OF TEST SETUP ................................................................................ 7 5. TEST AND MEASUREMENT EQUIPMENT ....................................................................... 9 6. DUTY CYCLE ....................................................................................................................10 7. RADIATED TEST RESULTS .............................................................................................11 7.1. LIMITS AND PROCEDURE ........................................................................................11 7.2. TX ABOVE 1 GHz FOR BLUETOOTH LOW ENERGY MODE IN THE 2.4 GHz BAND 12 7.3. WORST-CASE BELOW 1 GHz ...................................................................................17 8. AC POWER LINE CONDUCTED EMISSIONS ..................................................................19 9. SETUP PHOTOS ...............................................................................................................23 Page 3 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 1. ATTESTATION OF TEST RESULTS COMPANY NAME: GOOGLE INC. 1600 AMPHITHEATRE PARKWAY MOUNTAIN VIEW, CA, 94043, U.S.A EUT DESCRIPTION: GLASS MODEL: XEB SERIAL NUMBER: ECABB131105243 DATE TESTED: APRIL 4, 2013 APPLICABLE STANDARDS STANDARD TEST RESULTS CFR 47 Part 15 Subpart C Pass UL CCS tested the above equipment in accordance with the requirements set forth in the above standards. All indications of Pass/Fail in this report are opinions expressed by UL CCS based on interpretations and/or observations of test results. Measurement Uncertainties were not taken into account and are published for informational purposes only. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. Note: The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein. This document may not be altered or revised in any way unless done so by UL CCS and all revisions are duly noted in the revisions section. Any alteration of this document not carried out by UL CCS will constitute fraud and shall nullify the document. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, any agency of the Federal Government, or any agency of any government. Approved & Released For UL CCS By: Tested By: Tim Lee MONA HUA WiSE PROGRAM MANAGER EMC ENGINEER UL CCS UL CCS Page 4 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 TEST METHODOLOGY The tests documented in this report were performed in accordance with FCC CFR 47 Part 2, FCC CFR 47 Part 15, ANSI C63.10-2009, RSS-GEN Issue 3, and RSS-210 Issue 8. 2. FACILITIES AND ACCREDITATION The test sites and measurement facilities used to collect data are located at 47173 Benicia Street, Fremont, California, USA. UL CCS is accredited by NVLAP, Laboratory Code 200065-0. The full scope of accreditation can be viewed at http://www.ccsemc.com. 3. CALIBRATION AND UNCERTAINTY 3.1. MEASURING INSTRUMENT CALIBRATION The measuring equipment utilized to perform the tests documented in this report has been calibrated in accordance with the manufacturer's recommendations, and is traceable to recognized national standards. 3.2. SAMPLE CALCULATION Where relevant, the following sample calculation is provided: Field Strength (dBuV/m) = Measured Voltage (dBuV) + Antenna Factor (dB/m) + Cable Loss (dB) – Preamp Gain (dB) 36.5 dBuV + 18.7 dB/m + 0.6 dB – 26.9 dB = 28.9 dBuV/m 3.3. MEASUREMENT UNCERTAINTY Where relevant, the following measurement uncertainty levels have been estimated for tests performed on the apparatus: PARAMETER UNCERTAINTY Conducted Disturbance, 0.15 to 30 MHz 3.52 dB Radiated Disturbance, 30 to 1000 MHz 4.94 dB Uncertainty figures are valid to a confidence level of 95%. Page 5 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 4. EQUIPMENT UNDER TEST 4.1. DESCRIPTION OF EUT The EUT is a glass providing a heads-up video display. The device incorporates an 802.11 b/g 2.4 GHz WLAN and BT radio. This report covers the Bluetooth Low Energy. 4.2. MAXIMUM OUTPUT POWER The measured average power values were within ± 0.5 dB of the original values. Refer to original report number “12U14656-4A” for exact output power values and for all antenna port results. 4.3. DESCRIPTION OF CLASS II PERMISSIVE CHANGE The change filed under this application has the following changes. The antenna length was increased by 2.5mm. The Wifi antenna battery pod grounding was changed 4.4. DESCRIPTION OF AVAILABLE ANTENNAS The radio utilizes a coaxial monopole antenna with a maximum gain of 3.32 dBi. 4.5. SOFTWARE AND FIRMWARE The firmware/software installed in the EUT during testing was 201303251100. 4.6. WORST-CASE CONFIGURATION AND MODE Radiated emission and power line conducted emission were performed video playing with audio sound and with the EUT set to transmit at the channel with highest output power as worst-case scenario. The fundamental of the EUT was investigated in three orthogonal orientations X, Y, and Z. It was determined that Z-orientation was the worst-case orientation. Therefore, all final radiated testing was performed with the EUT in Z-orientation operated by AC adapter. Page 6 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 4.7. DESCRIPTION OF TEST SETUP SUPPORT EQUIPMENT Support Equipment List Description Manufacturer Model Serial Number FCC ID AC Charger GOOGLE 10AGE212020 N/A N/A I/O CABLES I/O Cable List Cable Port # of identical Connector Cable Type Cable Remarks No ports Type Length (m) 1 DC 1 USB Shielded 1.2 No TEST SETUP The EUT was at the worst position and connected to the charger played the video script and transmit the worst case BLE mode. Page 7 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 SETUP DIAGRAM FOR TESTS Page 8 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 5. TEST AND MEASUREMENT EQUIPMENT The following test and measurement equipment was utilized for the tests documented in this report: Test Equipment List Description Manufacturer Model Asset Cal Date Cal Due Antenna, Horn, 18 GHz EMCO 3115 C00872 09/20/12 09/20/13 Spectrum Analyzer, 44 GHz Agilent / HP E4446A C00986 08/22/12 08/22/13 Antenna, Bilog, 30MHz-1 GHz Sunol Sciences JB1 C01011 04/23/12 04/23/13 Preamplifier, 1300 MHz Agilent / HP 8447D C00580 11/11/12 11/11/13 EMI Test Receiver, 30 MHz R&S ESHS 20 N02396 08/08/12 08/08/13 LISN, 30 MHz FCC 50/250-25-2 C00626 01/14/13 01/14/14 Page 9 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 6. DUTY CYCLE LIMITS None; for reporting purposes only. RESULTS Mode Tx on Tx on + Tx off Duty Cycle Correction Factor (usec) (usec) (%) (dB) BLE 386.7 623.3 62.04 2.07 Page 10 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 7. RADIATED TEST RESULTS 7.1. LIMITS AND PROCEDURE LIMITS FCC §15.205 and §15.209 IC RSS-210 Clause 2.6 (Transmitter) IC RSS-GEN Clause 6 (Receiver) Frequency Range Field Strength Limit Field Strength Limit (MHz) (uV/m) at 3 m (dBuV/m) at 3 m 30 - 88 100 40 88 - 216 150 43.5 216 - 960 200 46 Above 960 500 54 TEST PROCEDURE The EUT is placed on a non-conducting table 80 cm above the ground plane. The antenna to EUT distance is 3 meters. For measurements below 1 GHz the resolution bandwidth is set to 100 kHz for peak detection measurements or 120 kHz for quasi-peak detection measurements. Peak detection is used unless otherwise noted as quasi-peak. For measurements above 1 GHz the resolution bandwidth is set to 1 MHz; the video bandwidth is set to 1 MHz for peak measurements and as applicable for average measurements. The spectrum from 30 MHz to 40 GHz is investigated with the transmitter set to the lowest, middle, and highest channels in each applicable band. The frequency range of interest is monitored at a fixed antenna height and EUT azimuth. The EUT is rotated through 360 degrees to maximize emissions received. The antenna is scanned from 1 to 4 meters above the ground plane to further maximize the emission. Measurements are made with the antenna polarized in both the vertical and the horizontal positions. Page 11 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 7.2. TX ABOVE 1 GHz FOR BLUETOOTH LOW ENERGY MODE IN THE 2.4 GHz BAND RESTRICTED BANDEDGE (LOW CHANNEL) LOW CHANNEL RESTRICTED, PEAK, HORIZ LOW CHANNEL RESTRICTED, AVERAGE, HORIZ Actual Average = Measured Average + Correction Factor = 41.008 dBuV + 2.07 = 43.078 dBuV Page 12 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 LOW CHANNEL RESTRICTED, PEAK, VERT LOW CHANNEL RESTRICTED, AVERAGE, VERT Actual Average = Measured Average + Correction Factor = 41.004 dBuV + 2.07 = 43.074 dBuV Page 13 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 RESTRICTED BANDEDGE (HIGH CHANNEL) HIGH CHANNEL BANDEDGE, PEAK, HORIZ HIGH CHANNEL BANDEDGE, AVERAGE, HORIZ Actual Average = Measured Average + Correction Factor = 41.773 dBuV + 2.07 = 43.843 dBuV Page 14 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 HIGH CHANNEL BANDEDGE, PEAK, VERT HIGH CHANNEL BANDEDGE, AVERAGE, VERT Actual Average = Measured Average + Correction Factor = 41.106 dBuV + 2.07 = 43.176 dBuV Page 15 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 HARMONICS AND SPURIOUS EMISSIONS Page 16 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 7.3. WORST-CASE BELOW 1 GHz SPURIOUS EMISSIONS 30 TO 1000 MHz (WORST-CASE CONFIGURATION, HORIZONTAL) HORIZONTAL PLOT Page 17 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 SPURIOUS EMISSIONS 30 TO 1000 MHz (WORST-CASE CONFIGURATION, VERTICAL) VERTICAL PLOT Page 18 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 8. AC POWER LINE CONDUCTED EMISSIONS LIMITS FCC §15.207 (a) RSS-Gen 7.2.2 TEST PROCEDURE The EUT is placed on a non-conducting table 40 cm from the vertical ground plane and 80 cm above the horizontal ground plane. The EUT is configured in accordance with ANSI C63.4. The receiver is set to a resolution bandwidth of 9 kHz. Peak detection is used unless otherwise noted as quasi-peak or average. Line conducted data is recorded for both NEUTRAL and HOT lines. Page 19 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 RESULTS 6 WORST EMISSIONS Page 20 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 LINE 1 RESULTS Page 21 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 13U14955-3A DATE: APRIL 12, 2013 FCC ID: A4R-X1 LINE 2 RESULTS Page 22 of 25 UL CCS FORM NO: CCSUP4701H 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.


Document Created: 2013-04-12 15:57:52
Document Modified: 2013-04-12 15:57:52
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