Zeroplus Arduino starter kit with Logic Analyzer Manual page 36

Result:
In ZP Studio, zoom in on the bus when the signals transition. You
should observe a spurious transition state for a brief period of
time .
[4]
These transitional states are caused by the delay between the channels
and they interfere with the decoding.
You can use the Noise filter in the option menu to remove them. Place
the bar A (shift+A) at the beginning of the value you want to filter
out, and the bar B (shift+B) at the end. In the top right corner of
the UI, under Information, you can see the distance between the two