Oscilloscopes And Dynamic Range - Fluke ScopeMeter 190B Series User Manual

Oscilloscopes and dynamic range

To prevent waveforms from being distorted, in particular
signals with large very steep edges, the signal should stay
within the dynamic range, just as with any Oscilloscope.
The dynamic range limits are the same as the trace offset
limits given in the section Specifications below.
In practice you must take care when using high time base
speeds when looking at signals that have large very steep
edges. They can be distorted when they jump from
outside the dynamic range directly to the visible area of
the screen.
Figure 2-4 shows a pulse wave within the dynamic range
(left), and a pulse wave that is partially outside the
dynamic range (right). The example, particularly the
16 div trace offset, applies to one of the 5 most sensitive
ranges.
Using the Medical Functions
+8
-16
Trace offset limits (= dynamic range)
Ground marker position example
Figure 2-4. Max. trace offset lowest ranges
2
Extended Offset
Avoid this for
steep edges
2-5