User manual

How to...158

Now that we have found some glitches, we will turn the Saturation control down

to minimum. Click the Persistence options button to open the Persistence

Options dialog , and then use the slider to adjust the saturation. The display

then appears as below.

The waveforms are now darker but have a wider range of colors and shades. The

most frequently occurring waveform is shown in red, and is the normal shape of the

pulse. A second waveform is drawn in light blue to shows that it occurs less

frequently, and it shows us that there is an occasional jitter of about 10 ns in the

pulse width. The third waveform is drawn in dark blue because it occurs less

frequently than the other two, and indicates that there is an occasional runt pulse

about 300 mV lower in amplitude than normal.

124