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PPA

4 years ago

Ein passiver Prüfabschluss ( PPA ) dient zu Messzwecken im Telefonnetz.

Der PPA besteht aus einer Reihenschaltung einer Diode und eines Widerstandes 470 kΩ (±1 %), die zwischen a-Ader und b-Ader der Teilnehmeranschlussleitung geschaltet sind

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