Deviser EM20 User manual

EM20 Technical Speci󽗉cations and
User Manual
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●Frequencyrange:1GHz;Fieldstrengthcalibrationrange:5V/m±0.5dB(20℃~30℃);
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●This󽗉eldstrengthcalibratorissuitableforcalibratingthe󽗉eldstrengthofallkindsof
electromagnetic󽗉ledstrengthmeterswithprobemeridionalsizebelow65mm,aswellas360
degreesisotropydetectionandveri󽗉cationofelectromagnetic󽗉eldprobe;
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●Inserttheantennaprobeintothecircularholeofcalibratorinaxialparallelasshownin󽗉gure,
keepthegeometriccenteroftheelectromagnetic󽗉eldprobeoverlapwiththegeometric
centerofcalibratorcircularhole;
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●AvoidusingthecalibratorinhighpowerRFradiationenvironment;
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●Pleasekeepthecalibratorover1mawayofhumanbody;
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●Beawareofdevicebatteryvoltagewarningwhencalibrating,lowbatteryvoltagecancause
inaccuratecalibration;
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●Thefrequencyrangeand󽗉eldstrengthcalibrationrangecanbecustomized;
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●Poweredby4AAbattery,6VorAClineadaptor,12V,󽗊exibleandconvenient.
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●Calibrationtuningpotentiometerhole(adj)isspeciallyusedbyprofessionalstocalibrate󽗉eld
strength.
Calibration tuning
potentiometer hole Power On/Off Power switch(DC/AC)
Charging port
Power indicatorCalibrator hole

User Manual of 󽗉eld strength calibrator
① . Afterclaibration,this󽗉eldstrengthcalibratorissuitableforcalibratingthe󽗉eldstrength
ofallkindsofelectromagnetic󽗉ledstrengthmeterswithprobemeridionalsizebetween
60mmto66mm.
② . Placetheantennaprobeintothecircularholdofcalibrtaiortoensurethereliabiity
ofclaibrationasshownin󽗉gure(EM9N),suggesttomakepositionholderincasethe
antennaprobemeridionalsizeissmallerthanthecircularholdofEM20calibrator.
③ . Placethecalibratorandelectromagnetic󽗉ledstrengthmeterontablehorizontally,insert
antennaprobeverticallyintothecircularholeofcalibratorandpoweroncalibrator(select
topowerbyinternalbatteryorAClineadaptor).Poweronelectromagnetic󽗉ledstrength
meterandwaitforstableresultdata,iftheresultdatachangesgreatly,pleasecheckthe
electromagneticenvironmentorchangeanotherlocationuntilgetstableresultdata.
（NOTE: Please keep the calibrator over 1m away of humanbody, and in no
electric appliance environment(IE: computer) during the calibration.）
④ . EM20 supports the calibrtaion of electromagnetic
󽗉led strength meter from di󽗈erent vendors
⑤ . Isotsopy index testing of antenna probe
Placetheantennaprobeverticallyintothecircularholeofcalibrator,orparallel
tothesideofthecircularholeasshownin󽗉gure,rotateelectromagnetic󽗉eldstrength
meter360degrees,recordtheresultdatainallangles,theaveragedi󽗈erencevalue
betweentheresultdataandstandardvalueisthe"isotropyindex".
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