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Voltcraft VC-890 Manual

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L´affi chage « OL » (pour Overload = dépassement) sur l´écran indique que vous avez dépassé
la plage de mesure.
a) Mise en marche du multimètre
Le commutateur rotatif (4) permet d’allumer ou d’éteindre le multimètre. Tournez le commutateur
rotatif sur la fonction de mesure souhaitée. Pour éteindre l’appareil, positionnez le commutateur rotatif
« OFF ». Éteignez toujours l´appareil de mesure en cas d´inutilisation.
b) Mesure de la tension « V »
Pour mesurer les tensions continues « DC » (V ), procédez comme suit :
1. Allumez le DMM et sélectionnez la plage de mesure « V
».
Pour des petites tensions jusqu’à 600 mV max., sélectionnez
« mV
».
2. Insérez le cordon de mesure rouge dans la douille de mesure
°CHzV (7), le cordon de mesure noir dans la douille de
mesure COM (8) (Fig. 2).
3. Raccordez à présent les deux pointes de la sonde à l´objet
à mesurer (pile, circuit, etc.). La pointe de la sonde rouge
correspond au pôle positif, la pointe de sonde noire au pôle
négatif.
4. La polarité respective de la valeur mesurée s´affi che avec la
mesure momentanée sur l´écran.
Dès qu’un signe négatif « - » précède la valeur de mesure
de la tension continue, la tension mesurée est négative
(ou les cordons de mesure sont inversés). La plage de
tension « V DC/AC » présente une résistance d´entrée de
>10 Mohms.
Fig. 2
5. À la fi n de la mesure, retirez les cordons de mesure de l’objet à mesurer et éteignez le DMM.
Pour mesurer les tensions alternatives « AC » (V
), procédez comme suit :
1. Allumez le DMM et sélectionnez la plage de mesure « V
». L’écran affi che « ».
Si nécessaire, vous pouvez sélectionner la fonction de mesure « AC+DC ». Allumez le DMM
et sélectionnez la plage de mesure « V
». Appuyez sur la touche SHIFT/SETUP (3) pour
commuter sur la fonction de mesure « AC+DC ». L’écran affi che « ».
2. Insérez le cordon de mesure rouge dans la douille de mesure °CHzV (7), le cordon de mesure
noir dans la douille de mesure COM (8).
73
19. AUTO POWER OFF FUNCTION
1. The DMM will switch off automatically after a specifi ed time if no button is pressed or the rotary
switch is not turned. This function protects and conserves the battery and extends the operating
time.
2. You can set a switch-off time in the SETUP menu. The default setting on the device is 5 minutes.
3. With the measuring device switched on, hold down the SHIFT/SETUP button (3) for approx. 2 s.
will appear on the display. You are now in SHIFT mode.
4. Hold down the SHIFT/SETUP button again for approx. 2 sec to open the SETUP menu.
5. Now press the SHIFT/SETUP button several times until the menu item “APO TIME” is selected. An
asterisk symbol * to the left of the menu item shows that the menu item is selected.
6. Press the REL/PC (Log/) and MAX/MIN (View/) buttons to set the switch-off time. The
choices are 5 MIN, 15 MIN, 30 MIN, or OFF. The “OFF” setting means that the auto power off
function is deactivated.
7. Hold down the SHIFT/SETUP button for approx. 2 sec to save the setting and exit the SETUP
menu. You will also exit SHIFT mode.
8. If you have set a switch-off time, the symbol
will appear on the display.
To switch the DMM back on after an automatic switch-off turn the rotary switch or press any
button (apart from the
-button (9)).
The auto power off function is deactivated when data is transmitted to a PC so as not to
interrupt the data connection. The auto power off function is inactive until the data transmission
to a PC (via optical interface) is switched off again.
The auto power off function is also deactivated during automatic recording of measured values.
20. OPTICAL INTERFACE
An optically insulated interface (11) is integrated into the back of the measuring device for transferring
the measurement data to a computer where they can be further processed.
The data connection can be made with a free USB interface on your computer using the supplied USB
interface adaptor (the software “Voltsoft” must already be installed on the computer).
Push the interface cover up from the housing. Insert the wedge-shaped adaptor from above into and
fl ush with the housing slot on the measuring device.
Then insert the type A USB plug on the other end of the interface cable into a free USB port on the
computer.
… 71 …


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