Duratech DA05 WinCE Instrukcja Użytkownika Pobierz pdf (Strona 29)

UniversitàdegliStudidiCatania

IntroductiontoNILabVIEW

 DAQ:signals&information

Asignalisclassifiedasanalog ordigital bythewayitconveysinformation.

• Adigital(orbinary)signalhasonlytwopossiblediscretelevels—highlevel(on)orlowlevel

(off).

• Ananalogsignal,ontheotherhand,containsinformationinthecontinuousvariationofthe

signalwithrespecttotime.

Strictly speaking, all signals are analog time‐varying signals. However, to discuss signal

measurement methods, you should classify a given signal as one of five signal types.

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Duratech DA05 WinCE Instrukcja Użytkownika Strona 29