Datasheet

PicoScope 4444 differential oscilloscope
Mask limit testing
Mask limit testing allows you to compare live signals against known good signals, and is designed for production and debugging environments. Simply capture a known good signal, automatically generate
a mask around it, and then attach the system under test. PicoScope will capture any intermittent glitches and can show a failure count and other statistics in the Measurements window, and you can set
the waveform buffer navigator to show only mask fails, enabling you to find that glitch quickly. You can also easily edit, import and export masks, and you can run mask limit tests on multiple channels and
in multiple viewports simultaneously.
The numerical and graphical mask editors can be used separately or in combination, allowing you to enter accurate mask specifications, modify existing masks, and import and export masks as files.
Mask limit testing works well when testing mains voltages (line power) with the PicoConnect 442 1000 V CAT III probe: probe the circuit and obtain a stable waveform, create a mask for it in
PicoScope 6, and leave the scope running. The software will record any mask fails, which you can then view at your leisure.
Using the built-in Alarms function, you can also
set the PicoScope software to carry out a range of
actions, including saving data, triggering the signal
generator or beeping, in the event of a mask failure.