Pico adds persistence mode to PC oscilloscopes
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Pico Technology product story
Edited by the Engineeringtalk editorial team
Dec 3, 2008
Pico Technology has added an advanced persistence display mode to its PC oscilloscopes.
Persistence mode is an oscilloscope feature that lets the user view signal history at the same time as the live waveform.
This means that intermittent glitches, jitter and noise remain on the display for longer, allowing the user to catch and analyse them.
Persistence mode can be used to search for a problem without knowing exactly what sort of error to look for.
When an out-of-specification waveform on the screen is seen, the user can switch to a standard display mode and set up the scope's advanced triggers to capture the problem in more detail.
Pico's persistence mode shows multiple waveforms on every screen update, making the display more responsive.
There is a digital colour mode that shows stable data in 'hot' colours and intermittent data in 'cool' colours.
With a stable trigger signal, this mode can display eye patterns for analysing serial data waveforms.
Digital colour mode is complemented by an analogue persistence mode, which emulates an analogue oscilloscope by drawing new data at full intensity while allowing old data to fade away.
This mode uses one colour per channel.
The user clicks the Persistence Mode button, and Picoscope does the rest.
The program allows the user to customise display colours and persistence parameters if needed.
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