9 Dec
2009
9 Dec
'09
7:01 p.m.
On 9 Dec 2009 at 10:16, Al Kossow wrote:
There is no need to record every value if it is only a
binary signal,
you can store the delta time to the next transition. This is the
difference on a logic analyzer between 'state' and 'timing' modes. In
'state' mode, you sample and save every signal at each event. In
'timing' mode, a high resolution clock is used to measure the
durations of each signal.
Aside from mechanical issues, I wonder how stable the ubiquitous
MC3470 read-channel IC and its ilk are in 5.25" and 8" drives. The
datasheet doesn't exactly inspire confidence. I don't think there's
a lot ot be gained by excessive oversampling.
--Chuck