Lite-On LH-20A1H cd speed jitter graph

I’ve seen a few quality scan graphs using the 20A1H ver LL07 which I have.
that show the jitter along with the pie and the pif,
I cannot get my litie to show the jitter, I have it set in the advance options but it won’t show up, does on my benq but not liteon???.
using cd/dvd speed freeware ver same ver that I’ve seen being used on the scans that show the jitter.
can anyone tell me how this is done :confused:

Version 4750 is a bit different see here.