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Entry  Mon Feb 4 16:42:08 2019, Hans Steiger, Different Distances between the sampling points 
    Reply  Mon Feb 4 16:46:04 2019, Stefan Ritt, Different Distances between the sampling points 
       Reply  Mon Feb 4 17:36:49 2019, Hans Steiger, Different Distances between the sampling points 
          Reply  Mon Feb 4 18:18:22 2019, Stefan Ritt, Different Distances between the sampling points 
Message ID: 734     Entry time: Mon Feb 4 16:46:04 2019     In reply to: 733     Reply to this: 735
Author: Stefan Ritt 
Subject: Different Distances between the sampling points 

The sampling points are NOT equidestant, they have varying bin widths of 150ps to 250ps at 5GS/s. That's due the way the DRS4 chip works. You might have neglected that fact in the past, but that would have led to poor timing resolutions (typically 1-2ns resolution only). To get bins with the same width, you have to treat your waveform as a real X/Y points (or better U/T), and the re-sample that cure, maybe spline-interpolated, at 200ps bins.

Stefan

Hans Steiger wrote:

Dear All,

with the older software for my V5 Board i did not have the problem, that the distance between the sampling points (in time) is not the same (e.g. a sampling point all 200ps for 5GS/s). 

How can i fix this?

Can someone provide me the software for the board which is old enough to not have this problem. All my Root interpreters produce problems with this new data format.  Which version would be old enough?

 

All the best and thanks a lot,

 

Hans

 

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