You can play with sampling specs, but 40MS/sec gives a Nyquist limit of 20
MHz.
IMO, you simply cannot trust what you see on the screen of a sampling scope.
-John
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Are you sure about the 70 MHz on the 7D20. I doubt that it was that good
one shot.
The specifications say 70 MHz bandwidth and simultaneous sampling of
40 MS/sec on each channel. I have heard that the bandwidth could be
significantly higher on some units.
