Prema DMM 5017 - Automatic Filter (Auto Filter); Fast Automatic Filter (Fast Auto Filter); Moving Average Filter (Avg. Filter)

The Menu "Configure"
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4-14
Automatic Filter (Auto Filter)
The automatic filter calculates the moving average over ten readings and
additionally the difference between the last two successive readings, comparing this
result with a difference value preset in the factory (depending on measuring range,
function and time). The filtering process is restarted when the difference exceeds the
value preset in the factory.
The filtering process also restarts when function, range or measuring time are
reselected.
Fast Automatic Filter (Fast Auto Filter)
similar to the automatic filter, but the first value after switching of channels or ranges
is more stable.
Moving Average Filter (Avg. Filter)
The moving average filter operates according to the same principle as above but
does not permit any signal-dependent restarting of the filter loop.
This filter is restarted when a function, range or measuring time is selected and after
pressing the
FILTER
KEY.
This kind of filtering achieves additional disturbance suppression by more than
20 dB.