Reference
88 TDS1000/2000-Series Digital Oscilloscope User Manual
2. For the TDS1000-series (monochrome monitor), a dimmed
waveform indicates referenc e waveforms or waveforms with
persistence applied.
For the TDS2000-series (color monitor), reference wave forms
appear white and waveformswith persistence applied appear in
the same color as the Mainwaveform, but with less intensity.
3. A broken line indicates the waveform di splay no longer matches
the controls. This happens when you stop the acquisiti on, and
change a control settingthat 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 TDS1000- and TDS-2000 series oscilloscopes use
“dfm”at a “reduced intensity”forpersistence.
With Persistenceset to Infinite, record points accumulate until a
control is changed.
XY Format. Use the XY formatto analyze phase differences, suchas
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 andchannel 2 is the vertical axis. The oscilloscope
uses the untriggeredSample acquisition mode and displaysdata as
dots. The sampling rate is fixedat 1 MS/s.