Mask limit testing is a feature that tells you when a waveform or spectrum goes outside a specified area, called a mask.
This feature is specially designed for production and debugging environments. Capture a signal from a known working system, and PicoScope will draw a mask around it with your specified tolerance. Connect the system under test, and PicoScope will highlight any parts of the waveform that fall outside the mask area. The highlighted details persist on the display, allowing the scope to catch intermittent glitches while you work on something else. The measurements window counts the number of failures, and can display other measurements and statistics at the same time.
The numerical and graphical mask editors (as shown below) can be used separately or in combination, allowing you to enter accurate mask specifications and to modify existing masks. You can import and export masks as files.