Hi Ben,
would You please have a look to the FIT algorithm :
Starting with 1Hz it stays too long on 50ms showing too much waves,
it displays 20 or more waves until 16.6kHZ
where it suddenly jumps from 200us to 20us/Div giving 4 waves.
Then, if You go down to 6.6kHz 50us it jumps to 500us again.
