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Voltcraft VC270 Manual

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h) Measuring Capacity (only VC270 and VC290)
ƽ
Make sure that all the circuit parts, switches and components and other objects of
measurement are disconnected from the voltage and discharged.
With electrolyte capacitors, observe the polarity.
- Turn the DMM on and select the measuring range
- Plug the red measuring lead into the V measuring socket (7) and the black
measuring lead into the COM measuring socket (8).
- The display shows the unit “nF”.
☞
Due to the sensitive measuring input, the display may show a
value even with “open” measuring leads. Pressing the “REL”
button resets the display to “0”. The Autorange function remains
active.
- Now connect the two test probes (red = positive pole/black = negative pole) with the object to be mea-
sured (capacitor). After a short while the display shows the capacity. Wait until the displayed value has
stabilised. With capacities of >40 µF, this may take a few seconds.
- If “OL” (overload) appears on the display, you have exceeded the measuring range.
- After measuring, remove the measuring leads from the measured object and turn the DMM off.
i) Battery Test “ (only VC250)
The battery test is used to quickly check the most common 1.5V batteries and 9V block batteries. For
an objective measuring result, the batteries/storage batteries are tested under a small load. The real
pole voltage under load is indicated on the display. Measurement can also be carried out on recharge-
able batteries. To do so select the measurement range which suits your rechargeable battery best (e.g.
measurement range 1.5 V for 1.2 V rechargeable battery)
- Turn the DMM on and select measuring range
- Plug the red measuring lead into the mAµA measuring socket (5) and
the black measuring lead into the COM measuring socket (8).
- The display shows the unit “V”.
☞
Rechargeable batteries have a lower cell voltage and the
measured value is correspondingly lower than for normal bat-
teries.
- If “1” appears on the display, you have exceeded the measuring range.
- After measuring, remove the measuring leads from the measured object and turn the DMM off.
.
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