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250 mV, 700 mV to approx. 3200 mV) will be measured provided
that the semiconductor path is not defective.
When the test probes are reversed, i.e. red to the cathode and
black to the anode, then the non-conducting direction of the se-
miconductor path is checked.
If "3,3V" is displayed, then the diode is in good condition. If, on
the other hand, a other voltage value is displayed, then either the
test object is connected incorrectly, or it is defective.
In addition, in the case of measured values < 100 mV, an acou-
stic signal sounds.
3. This acoustic signal sounds also during continuity tests on resi-
stors of less than 100 Ohm.
During diode or continuity testing, make sure that
the diode and any circuit into which it may possibly
be built is absolutely voltage-free. All capacitors
present must be discharged.
H Frequency measurement
The measuring instrument has a so-called AUTO RANGE feature
only with frequency measurement. This means that the measuring
range automatically adjusts to suit the connected frequency, reco-
gnisable by the position of the decimal point.
To measure a frequency, proceed as follows:
cordon
rouge
cordon
noir
Sense direct
cordon
rouge
cordon
noir
Sens bloqu
44
B Mise en service
Elément d'ajustage pour commutateur des fonctions de mesure ou
commutateur rotatif
Par l'intermédiaire du commutateur rotatif, l'appareil de mesure est
allumé et éteint (OFF).
La position du commutateur des fonctions de me-
sure ne doit en aucun cas être modifiée lors d'une
mesure, l'appareil de mesure pourrait en être
détruit (étincelle à rupture), respectivement pourra
présenter comme conséquence un danger de mort
lors de tensions supérieures à 25 VACrms ou 35
VDC
Ne dépassez jamais les valeurs maximales de me-
sure, car outre le risque d'endommager votre ap-
pareil, vous courez un danger de mort.
En disposition circulaire complète, les différentes mesures possi-
bles en partant de ("OFF" dans le sens des aiguilles d'une
montre)sont sélectionnables en tournant le commutateur :
DC= = Mesure du courant continu et de la tension continue
AC~ = Mesure du courant alternatif et de la tension alterna-
tive
kHz = Mesure de fréquences
+)/->I- = Contrôle de la circulation du courant électrique
(acoustique) et test des diodes
400ohms= Mesure de résistance
C Tenue de l'appareil pour l'utilisation
Tenez la transfo-pince de façon à ce que l'affichage à cristaux liqui-
61
46


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