Reference
1. A solid waveform indicates a channel (live) waveform display. The waveform
remains solid when the acquisition is s topped if no controls are changed that
make the di
splay accuracy uncertain.
Changing the vertical and horizontal controls is allowed on stopped
acquisit
ions.
2. Reference waveforms appear white and waveforms with persistence applied
appear i
n the same color as the Main waveform, but with less intensity.
3. A broken line indicates the waveform d isplay no longer matches the controls.
This ha
ppens when you stop the acquisition, and change a control setting that
the oscilloscope is not able to apply to the displayed waveform. For example,
changing the trigger controls on a stopped acquisition causes a broken-line
waveform.
Key Points
Persistence. The oscilloscope displays persistence waveform data with less
intensity than "live" waveform data. With Persistence set to Infinite, record points
accu
mulate until a control is changed.
Option Comments
Off Removes default or old waveforms whenever new waveforms
dis
play
Time limit
Di
splays new waveforms at normal intensity and old waveforms
at a lower intensity; erases old waveforms when they reach
the time limit
Infinite Older waveforms become less bright but always remain visible;
u
se Infinite persistence to look for infrequent events and to
measure long term peak-to-peak noise
XY Format. Use the XY format to analyze phase differences, such as those
represented by Lissajous patterns. The format plots the voltage on channel 1
against the voltage on channel 2, where channel 1 is the horizontal axis and
84 TDS2000C and TDS1000C-EDU Series Oscilloscope User Manual