There is a video now finally on YouTube. Interface looks quite neat, but seems there are some bugs.
Concerning the false triggering issue, in that video LA works in slow capture rate, but LA trigger can work internaly at full speed (1Gs\s) and can capture very tyni transient true state event (when some signals go from 0 to1, some go from 1 to 0, some pins make it a bit faster, some other a bit slower). In trigger menu there should be some setting, how long the logic state should be to raise trigger event.
I've played a bit with decoding a simple 4 bits LCD protocol, here are some pictures
D1 is sync (from 1 to 0),
D0 - defines commands (=0) and text (=1),
D2-D5 - 4 bits of data
decoder is set to show 4bits of data as a digit on every falling edge of the sync.
In the picture controller is sending strings " -T0- ", " -T1- ", " -T2- ", " -T3- " to different places of the screen.
First byte (a pair of sync pulses) defines a place on the screen,
Next set of bytes is a string in hex format, for example string " -T0- " = (20 2D 54 30 2D 20)