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b) Mesure de la tension continue et alternative
ƽ
Ne dépassez en aucun cas les grandeurs d’entrée maximales autori-
sées, même en cas de mesure de tensions continues superposées
(par ex. tensions ondulées).
Pour la mesure des tensions, procédez comme suit :
-
Allumez le DMM en actionnant l’interrupteur
rotatif (1) et choisissez la plage de mesure
« VDC » pour les tensions continues ou
« VAC » pour les tensions alternatives. « DC »
ou « AC » apparaît alors à l’écran.
- Branchez les câbles de mesure dans les
douilles de mesure.
- Reliez maintenant les deux pointes de mesure
à l’objet à mesurer (pile, circuit, etc.).
- La valeur mesurée s’affiche alors à l’écran (2).
La plage de tension « V DC/AC »
présente une résistance d'entrée de >7,5 Mohm.0 Dès qu'un signe
négatif « - » précède la valeur de mesure de la tension continue,
alors la tension mesurée est négative (ou les câbles de mesure sont
intervertis). Si « OL » apparaît à l'écran, la
plage de mesure est
dépassée.
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