Waveform
There are two waveform markers: + and X. The waveform markers track the
waveform data in memory rather than the displayed waveform. Because the
waveform data in memory has a much greater resolution than the display, the
measurements you make with the waveform markers are much more precise
than measurements made with the manual markers.
As long as you do not press the Autoscale key, the waveform markers stay in
the position where you placed them on the data, which allows you to make
accurate delay measurements without having both markers on the display.
+ Source and X Source
You can set the marker sources as channels, functions, or memories. For
example, you can set the + source to a waveform memory and the X source
to a channel. The scale used to position each marker on the display is based
on the scale of the waveform source that the marker is tied to. You can select
a marker source that is turned off, which prevents the markers from
displaying on the screen. If you cannot see a marker on the screen, check to
see if the marker source is turned off. Also, when you are placing markers on
a waveform, make sure that the source is set to that waveform.
Marker Menu
Waveform
11–5
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