Measuring Waveforms
3-86 CSA8000B & TDS8000B User Manual
Cursors can measure channel, reference, and math waveforms, as well as
waveform databases. You may set the source of each cursor explicitly in the
Cursor Setup dialog box.
The key points that follow describe operating considerations for setting up cursors
to obtain best measurement results.
Cursor Types. The three cursor types are described in Table 3--6 on page 3--85.
There are two cursors displayed for all types, Cursor 1 and Cursor 2; the cursor
currently selected for adjustment is the solid cursor (bottom cursor in Fig-
ure 3--22
+ 3 divisions at 100 mV/div
+ 3 divisions at 20 mV/div
Figure 3- 22: Horizontal cursors measure amplitudes
Cursors are Display-Limited. You cannot move a cursor off screen. Also, if you
resize waveforms, the cursors do not track. That is, a cursor stays at its screen
position, ignoring changes to horizontal and vertical scale and position and to
vertical offset. However, waveform cursors track the waveform point vertically;
they work differently than vertical and horizontal cursors.
Cursors Default to the Selected Waveform. Each cursor measures its source,
defined in the Cursors Setup dialog box. Note the following behavior regarding
source selection:
HWhen cursors are first turned on, the instrument automatically assigns them
to use the waveform currently selected on screen as the source for each