Resistance Measuring - VOLTCRAFT VC175 Bedienungsanleitung

c) Resistance measuring
Make sure that all the circuit parts, switches and components and other objects of
measurement are disconnected from the voltage and discharged.
Proceed as follows to measure the resistance:
1. Turn the DMM on and select measuring range " ".
2. Insert the red measuring lead into the
socket (9).
3. Check the measuring leads for continuity by connecting both measuring leads to one another. After
that the resistance value must be approximately 0.5 (inherent resistance of the measuring leads).
4. Now connect the measuring prods to the object to be measured. As long as the object to be
measured is not high-resistive or interrupted, the measured value will be indicated on the display.
Wait until the display has stabilised. With resistances of >1 M , this may take a few seconds.
5. As soon as "OL" appears on the display, you have exceeded the measuring range or the measuring
circuit has been broken. Select a larger measuring range if necessary.
6. After measuring, remove the measuring leads from the measuring object and turn the DMM off.
Turn the rotary switch (5) to the position "OFF".
If you carry out a resistance measurement, make sure that the measuring points which you
contact with the measuring prods are free from dirt, oil, solderable lacquer or similar. An
incorrect measurement may result under such circumstances.
d) Diode test
Make sure that all the circuit parts, switches and components and other objects of
measurement are disconnected from the voltage and discharged.
1. Turn the DMM on and select measuring range " ".
2. Press the SELECT button (1) until
3. Insert the red measuring lead into the
socket (9).
4. Check the measuring leads for continuity by connecting both measuring prods to one another. After
that the value must be approximately 0 V. An acoustic signal can be heard.
5. Now connect the two measuring prods with the object to be measured (diode).
6. The display shows the continuity voltage in volt (V). Open-circuit voltage is about 2.6 V.
7. If "OL" is shown, the diode is measured in reverse direction or the diode is faulty (interruption).
Perform a counter-pole measuring for control reasons. The red measuring lead corresponds to the
positive pole (anode), the black measuring lead to the negative pole (cathode). A silicone diode has
an on-state voltage of approx. 0.5 – 0.8 V.
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socket (8) and the black measuring lead into the COM
shows on the LC display (4).
socket (8) and the black measuring lead into the COM
Suivez la procédure indiquée pour insérer/remplacer la pile :
1. Retirez les câbles de mesure connectés du circuit de mesure et de l'appareil de mesure. Éteignez
le DMM.
2. Desserrez la vis au dos du compartiment de la pile (6) et retirez avec précaution le couvercle de la
pile et la pile hors de l'appareil de mesure.
3. Insérez une nouvelle pile en respectant la polarité dans le couvercle de la pile et insérez-les dans
le DMM.
4. Vissez et serrez le couvercle de la pile à l'aide de la vis.
Vous pouvez utiliser les piles alcalines compatibles dont le numéro de commande est :
Réf. article 65 25 09 (commander une pile).
Utilisez uniquement des piles alcalines, qui sont puissantes et ont une durée de vie prolongée.
DÉPANNAGE
Observer systématiquement les consignes de sécurité.
Toutes réparations autres que celles qui sont décrites ne doivent être effectuées
que par un technicien habilité.
Pour toute question concernant l'utilisation de l'appareil de mesure, vous pouvez
appeler notre assistance technique au numéro de téléphone suivant :
Voltcraft®, 92242 Hirschau, Lindenweg 15, téléphone 0180 / 586 582 7
En achetant le DMM, vous avez acquis un produit conçu dans les règles de l'art et fonctionnant de
manière fi able.
Des problèmes ou des pannes pourraient cependant se produire. Le tableau ci-après précise, le cas
échéant, comment corriger vous-même les éventuels dysfonctionnements.
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