User manual

How to...158

8.7

How to find a glitch using persistence mode

Persistence mode helps you find rare events hidden in otherwise repetitive

waveforms. In normal scope mode, such an event may appear on the display for a

fraction of a second, too quickly for you to press the space bar to freeze it on the

screen. Persistence mode keeps the event on the display for a predetermined time,

allowing you to set up the trigger options to capture it more reliably.

Step-by-step guide

Set up the scope to trigger on a repetitive waveform like the one below. We suspect

that there are occasional glitches but we can see nothing wrong yet, so we shall

use persistence mode to investigate.

Click the Persistence Mode button to continue.