Velleman DVM66 Operation manual - page 7
VELLEMAN GB
6
•
To change the percentage
tolerance, use
∆
% button. Per
pushing increases 0.5% until
10%. The bar graph consists of
12 bars in this case. One bar of
the 2
nd
to 11
th
indicates 1% and
the 13
th
indicates 0.5%. For
example, right figure indicates
5.5% tolerance.
•
Hold this button for more than 3
seconds to exit.
2.4 Range Button
•
Range button is used to change ranging mode between Auto and Manual.
When a function with A/M ranging mode is selected, the meter enters auto
ranging at first. To change to manual ranging, push this button once.
•
When the meter operates in manual ranging mode, push this button to change
range to the higher one and hold this button for more than 3 seconds to return
to auto ranging mode.
2.5 A-H Button
•
Auto data hold is a very useful function for real time measurement. Just push
A-H button to hold the last measuring result. When a new measurement is
made, the meter will hold the new value automatically. This function remains
valid until pushing the A-H button to release the meter.
•
New value mentioned above means a value much different from the old. In
most of measurements with this meter, 10 digit difference is enough. But in
resistance measuring, maybe less than 20 digits will not result in a new
holding.