EEVblog #223 – Agilent Oscilloscope High Res ModePosted on December 3rd, 2011 1 comment
Dave demonstrates a little trap with the “High Resolution” mode on modern digital oscilloscopes like the Agilent 3000X series.
And you are correct, you have to be aware of what the high-res function does. LeCroy has had this feature on their DSO’s since the 1990′s ( maybe even the late 80′s), they called it E-RES for Enhanced-Resolution and it was a pay for firmware option.
They had three distinct advantages over their competitors on this feature:
1. They had it first, like many other firsts in DSO’s.
2. Their E-RES mode could be set for 0.5,1,2 or 3 bits of E-RES.
3. They show you right on the screen what the Nyquist bandwidth penalty is for a given E-RES bit enhancement value, a timebase setting and a sample memory depth setting (which unlike most DSO’s)that is adjustable to fit the type of measurement you are making.
Moderator, Independent LeCroy_Owners_Group
P.S. did you ever get that 9300 series scope working?
Best regards and keep up the teardowns.
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