Ados T060E - T060 E Signal Filtering Methods

1569‐PT060EE1 Rev.7 Page10of62
2.2.4 Signal filtering
Theinstrumentallowsintroducingfilteringmethodsofthesignalcomingfromloadcells(FIRfilters).Thismethodis
basedonDigitalSignalProcessing(DSP)modesandallowshandlingatbest,signalscontainingstrongharmonic
components(e.g.generatedbymixers).
Duringtheconfigurationphase,itispossibletoselectthreetypical
filters(withmovingaverage)and5DSPfilters.
Theformerallowquickerresponsetimesbutarelesseffectivewithregardstointerferences,thereforetheymustbe
usedwhenextremelyquickweightvariationsmustbedetected.
Thelatterallowmitigatinginterferences(sincetheyboastahigherfilteringeffect)atthedisadvantage
oftheresponse
timetoweightvariations.
Inbothcases,thehigheristhefilter’snumber,thegreateristhefilteringeffectandtheresponsetimetoaweight
variation.

Forexample,theresponsetoastepweightvariationisshowninthechartbelow,basedontheselectedfilter.
ThechartshowsthatfilterFIR1boastsaresponsetimeofapprox.0.2seconds,whilefilterFIR5boastsaresponse
timeofapprox.2.5seconds.