HP 54645A User's And Service Manual page 103

MegaZoom Concepts
Pan and Zoom
With vectors off, the resolution limit appears as shown in the following figure.
Figure 4-8
Horizontal
lines indicate
the search time
(line length)
and max and
min values
(line position).
Normal point
Resolution Limit in Peak Detect with Vectors Off
Recall that in peak detect, the HP 54645A/D shows both peak detect
information and some "normal" points. In this figure, horizontal lines indicate
both the time over which the max and min values were searched (line length)
and the max and min values (line position—the upper line corresponds to the
lower line in the same set of pixels). The normal points in the display show
individual samples also acquired at the same time.
4-20
max value
min value
max value
min value