Well my friends
I was a bit confusing trying to explain things!
Well see previous post #65 (http://www.picbasic.co.uk/forum/show...3&postcount=65) to see what I mean exactly.

If /when using oversampling method this introduces a delay to my pulsin /pulsout routines (simple pass through) .
I even try omiting meter/feet convertion all together and calculating 200m ALT reach by raw data as it comes from ADC only!