User manual

Fluke 190-104, Fluke 190-204
Users Manual
24
5
ENTER
Select Average factor: Average
64. This averages the outcomes
of 64 acquisitions.
6
ENTER
Select Average: Normal (normal
average) or Smart (smart
average, see below)
You can use the average functions to suppress random or
uncorrelated noise in the waveform without loss of
bandwidth. Waveform samples with and without smoothing
are shown in Figure 11.
Smart average
In the normal average mode occasional deviations in a
waveform just distort the averaged wave shape, and do
not show up on screen clearly. When a signal really
changes, for instance when you probe around, it takes
quite some time before the new wave shape is stable.
With smart averaging you can quickly probe around, and
incidental waveform changes like a line flyback in video
show up on screen instantly.
Figure 11. Smoothing a Waveform