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h) Measuring Capacity (only VC270 and VC290)
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 measured (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 mA µA 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 mea-
sured value is correspondingly lower than for normal batteries.
- 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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