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3.2.2 TestSetup

ANTENNAELEVATIONVARIESFROM 1 TO4 METERS

3.0 METERS

EUT FRPTABLE 0.8 m

GROUND PLANE

PREAMPLIFIER SPECTRUMANALYZER

TESTRECEIVER

:50 ohmCoaxialSwitch

3.3

RadiatedEmissionLimit[FCCPart15SubpartC15.209]

Frequency (MHz) 30 ~ 88 88 ~ 216 216 ~ 960 Above 960 Distance (m) 3 3 3 3 Fieldstrengthlimits(μV/m) (μV/m) 100 150 200 500 dB(μV/m) 40.0 43.5 46.0 54.0 NOTE 1 - EmissionLeveldB(μV/m)=20 logEmissionLevel(μV/m) NOTE 2 - Thetighterlimitappliesatthebandedges. NOTE 3 - Distancereferstothedistancein metersbetweenthemeasuring instrumentantennaandtheclosedpointof anypartof thedeviceor system. NOTE 4 - Thelimitsshown arebasedon Quasi-peakvaluedetectorbelowor equalto1GHz andAveragevaluedetectorabove1GHz. NOTE 5 - Above 1 GHz, thelimiton peakemissionis20 dBabovethemaximum permittedaverageemissionlimitapplicabletotheEUT

3.4

TestConfiguration

The EUT(listedinSec.2.1)andthesimulators(listedinSec.2.2)wereinstalled asshownonSec.3.2tomeetFCCrequirementsandoperatinginamannerthat tendsto maximizeitsemissionlevelinanormalapplication.

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3.5

OperatingConditionofEUT

3.5.1SetuptheEUTas shown inSec.3.2. 3.5.2Turnon thepower of allequipment. 3.5.3TurntheEUTon thetestmode,andthentest.

3.5.4ConfiguredtheEUTinthreeaxis:Lying/Side/Stand,andtest

separately.

3.6

TestProcedures

Radiatedemissiontestappliestoharmonics/spursthatfallintherestricted bandslistedinSection15.205.Themaximumpermittedaveragefieldstrength islistedinSection15.209.Apre-ampisnecessaryforthismeasurement. For measurementabove1GHz,setRBW=1MHz,VBW=10Hz,Sweep:Auto.If the emission is pulsed, modify the unit for continuousoperation;use the settingsshownabove,thencorrectthereadingbysubtracting thepeak-average correctionfactor,derivedfromtheappropriatedutycyclecalculation.

TheEUTwas placedon a turntablethatis 0.8 meteraboveground. The turntable rotated360degreestodetermine thepositionofthemaximum emissionlevel.TheEUTwasset3metersawayfromthereceivingantenna, whichwasmountedonanantennatower.Theantennamovedupanddown between1meterand4meterstofindoutthemaximum emission level. Broadbandantenna(CalibratedBilogAntenna)orHornantennawasusedas receivingantenna.Bothhorizontalandverticalpolarizationsoftheantenna weresetonmeasurement.Inordertofindthemaximumemission,allofthe interferencecablesweremanipulated accordingtoANSIC63.4:2003 requirementsduringradiatedemissiontest.

The bandwidthof TestReceiverR&S ESVS10 was set at 120 kHz from 30MHz to1000MHz.

Thebandwidth oftheVBWwassetat1MHzandRBWwassetat1MHzfor peakemissionmeasurementabove1GHz for SpectrumAgilentE7405A. Thefrequencyrangefrom30MHzto25GHz(Upto10thharmonicsfrom fundamentalfrequency)was checked.

TheEUTwas testedunderthefollowingtestmodes:

Mode Operation Channel Frequency 11 18 26 18 11 26 2405 MHz 2440 MHz 2480 MHz 2440 MHz 2405 MHz 2480 MHz 1. 2. Transmitting 3. 4. Receiving 5. Transmitting Band-Edge 6.

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AllthetestresultsarelistedinSec.3.7.

3.7

TestResults

Thefrequencyandamplitudeofthehighestradiatedemissionrelativethelimit isreported. AlltheemissionsnotreportedbelowaretoolowagainsttheFCC limit.

No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.

Operation Antenna Channel Frequency DataPage P12 P13 P14 P15 P16 P17 P18 P19 P21-22 Band P23-P24 Edge P25-P26 PCB Transmitting SMA PCB SMA Receiving 11 18 26 11 18 26 18 18 11 26 2405 MHz 2440 MHz 2480 MHz 2405 MHz 2440 MHz 2480 MHz 2440 MHz 2440 MHz DutyCycle 2405 MHz 2480 MHz Transmitting --

NOTE 1 – Level=ReadLevel+AntennaFactor+CableLoss (<1GHz)

NOTE 2 – Level=ReadLevel+AntennaFactor+CableLoss - PreampFactor

(>1GHz)

NOTE 3 –AllreadingareQuasi-Peakvaluesbelowor equalto1GHz, Peakand

Averagevaluesabove1GHz.

For above1GHz test,ifthepeakmeasuredvaluecomplieswiththe averagelimit,itisunnecessarytoperformanaveragemeasurement.

NOTE 4 – For ReceivingMode, we selectedReceivingCh18modetoperform

thetest.

NOTE 5 –Theemissionlevelsrecordedbelowisdataof EUTconfiguredin

Lyingdirection,for Lyingdirectionwas themaximumemission directionduringthetest.Thedataof Side&Standdirectionaretoo low againsttheofficiallimittobereported.

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EUT ModelNo. SerialNo. TestMode

: 802.15.4 /ZigBeeModule : : :

REX3 1016BCE3 TransmittingCh11

Temperature: Humidity

:

25℃ 45%RH May 07, 2012

PCB

DateofTest : Antenna

:

Polarization Frequency (MHz) 30.97 84.32 134.76 306.45 567.38 739.07 1852.00 3184.00 5032.00 7492.00 5032.00 7492.00 31.94 75.59 133.79 257.95 550.89 800.18 1312.00 2488.00 5272.00 7312.00 5272.00 7312.00 Horizontal Vertical Meter Reading dB(μV) -0.24 -5.07 -1.42 -0.80 0.14 0.09 51.24 45.93 44.20 44.19 25.96 25.26 -0.87 -5.82 -0.58 0.15 1.09 0.79 54.36 51.05 43.62 45.58 27.34 27.94 Antenna Factor (dB/m) 17.78 10.75 10.72 13.87 18.02 19.94 27.30 31.98 36.69 38.70 36.69 38.70 17.29 10.27 10.74 12.31 17.92 20.60 26.38 29.55 36.59 38.03 36.59 38.03 Preamp Limits Emission Cable Margin Loss Factor LeveldB dB Remark (dB) (dB) (dB) (μV/m) (μV/m) 0.81 -- 18.35 40.00 21.65 1.64 -- 7.32 40.00 32.68 2.14 -- 11.44 43.50 32.06 QP 2.77 -- 15.84 46.00 30.16 3.40 -- 21.56 46.00 24.44 3.78 -- 23.81 46.00 22.19 6.26 36.37 48.43 74.00 25.57 6.72 35.84 48.79 74.00 25.21 PK 9.25 35.18 54.96 74.00 19.04 10.14 34.72 58.31 74.00 15.69 9.25 35.18 36.72 54.00 17.28 AV 10.14 34.72 39.38 54.00 14.62 0.82 -- 17.24 40.00 22.76 1.53 -- 5.98 40.00 34.02 2.12 -- 12.28 43.50 31.22 QP 2.63 -- 15.09 46.00 30.91 3.37 -- 22.38 46.00 23.62 3.88 -- 25.27 46.00 20.73 5.49 37.49 48.74 74.00 25.26 6.99 36.06 51.53 74.00 22.47 PK 9.40 35.06 54.55 74.00 19.45 9.91 34.73 58.79 74.00 15.21 9.40 35.06 38.27 54.00 15.73 AV 9.91 34.73 41.15 54.00 12.85

TESTENGINEER:RAVEN JIN

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