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True-rms Digital Multimeter
Modus voor hoge resolutie (HiRes)
33
De pulsbreedte bepalen
Voor een periodieke golfvorm (het patroon ervan wordt na
gelijke tijdsintervallen herhaald) kunt u als volgt
vaststellen hoe lang het signaal hoog of laag is:
1. Meet de frequentie van het signaal.
2. Druk een tweede keer op G om de duty cycle van
het signaal te meten. Druk op E om een meting
van de positieve of negatieve puls van het signaal te
selecteren. Zie afbeelding 9.
3. Bereken de pulsbreedte aan de hand van de
volgende formule:
Pulsbreedte = % duty cycle ÷ 100
(
in seconden
)
Frequentie
Modus voor hoge resolutie (HiRes)
Druk op het product gedurende één seconde op H om
de 4-1/2-digit-modus voor hoge resolutie (HiRes) te
activeren. Metingen worden weergegeven met 10x de
gebruikelijke resolutie, met een maximale weergave van
19.999 counts. De modus voor hoge resolutie (HiRes)
werkt bij alle modi behalve de functies capaciteit,
frequentieteller, temperatuur en (piek) MIN MAX van
250 μs.
Om naar de 3-1/2-digit-modus te gaan, houdt u H één
seconde ingedrukt.
39


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