 Thu Jun 12 12:46:00 2014, Stefan Ritt, DRS eval bord v5 Timing
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> a) Calibration:
> I am using 4 boards daisy chained. To achieve optimal time resolution I did first a voltage calibration and right afterwards a time calibration. For
all
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 Fri Oct 12 14:06:04 2012, Moritz von Witzleben, DRS abbreviation
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Hello,
what is the abbreviation of DRS?
Thanks and kind Regards, |
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Fri Oct 12 14:09:37 2012, Stefan Ritt, DRS abbreviation
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Moritz von Witzleben wrote:
Hello, |
Mon Mar 21 10:38:27 2016, Daniel Dribin, DRS Oscilloscope freezing after a long run 
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Dear Stefan Ritt,
I am using a DRS4 v5 to do timing measurements of Positron lifetime. I use the DRS Oscilloscope with triggering on 2 channels when I have
a coincidence. Attached is a picture with all the setting that I use. When I use the DRS4 for a long measurements of 5 million events for a couple of hours, |
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Mon Apr 4 11:31:34 2016, Stefan Ritt, DRS Oscilloscope freezing after a long run
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Dear Daniel,
sorry my late reply, I'm pretty busy these days. The behavior you report has not been seen before, but I guess no one tried to take such
long runs of data yet. Can you confirm that the problem also occurs without writing data to disk, or is it disk-related? I guess you use it under Windows |
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Mon Apr 4 11:41:26 2016, Daniel Dribin, DRS Oscilloscope freezing after a long run
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Dear Stefan Ritt,
Yes I use Windows 7, If the DRS Oscilloscope program stays on for a couple of hours without saving the
data, the problem will occur. It seems it happens more often when there is data writing and when the rate of events is slow, about 100 events per second, |
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Mon Apr 4 12:08:15 2016, Stefan Ritt, DRS Oscilloscope freezing after a long run
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Then it seems that there is some USB communication problem. I heard this also from other people, that the USB data transfer under Windows has sometimes
problems. I develop and run the board under Mac OSX, and there the same software runs for days without problem. So I guess it's related to the underlying
libusb lib which is used by the DRS oscilloscope, on which I have no influence. So the only advice I can give is to take shorter series of data. Anyhow |
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Tue Apr 5 16:08:59 2016, Stefan Ritt, DRS Oscilloscope freezing after a long run
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I tried this night to run the board at a 10 Hz rate with an external pulser, without writing, and it did not freeze after ~14 hours of running on Mac
OSX. This night I will try again with writing.
Stefan |
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Wed Apr 6 08:41:08 2016, Stefan Ritt, DRS Oscilloscope freezing after a long run
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Even with writing for one night no problem (see below). Have you checked how big your data file is? I guess there is a limit under Windows of 2 GB. If
that's the case, you have to write shorter files.
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Wed Apr 6 09:01:28 2016, Martin Petriska, DRS Oscilloscope freezing after a long run
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Stefan
Ritt wrote:
I tried this night to run the board at a 10 Hz rate with an external |
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Wed Apr 6 09:43:52 2016, Daniel Dribin, DRS Oscilloscope freezing after a long run
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At hight rates I worked with files of up to 20 GB so I don't think this is the problem.
I will try to run it under Ubuntu and see if i can recreate the problem.
Thank you very much for the quick responses and help. |
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Wed Apr 6 09:46:10 2016, Daniel Dribin, DRS Oscilloscope freezing after a long run
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Martin Petriska
wrote:
Stefan |
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Wed Nov 28 16:54:46 2012, Stefan Ritt, DRS Oscilloscope for Raspberry Pi and Mac OSX 10.8
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I made a pre-compiled package for Mac OSX 10.8 (Mountain Lion), so one should be able to install the DRS Oscilloscope software with one mouse click on
a recent Mac.
The Makefile in the tar ball now also supports OSX 10.8, so one could even compile it from the sources on a Mac, after libusb-1.0 and wxWidgets |
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Mon Dec 12 16:43:04 2011, Stefan Ritt, DC coupled DRS4 input stage
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In the attachement you will find a working DC-coupled input stage to the DRS4 chip. The bandwidth of this design is about 700 MHz, the gain is 1.
The upper version does not have an additional input buffer. This is not a very "clean" design, since the differential driver has an input
impedance of 150 Ohm, which together with the 75 Ohm termination resistor gives about 50 Ohm termination. |
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Thu Jul 9 09:11:03 2009, Stefan Ritt, Current problems with drs_exam.cpp
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The current version of the DRS readout example program drs_exam.cpp has two problems:
The sampling frequency cannot be changed, it will always stay in the region around 5 GSPS
The waveform obtained by GetWave
is rotated such that the first DRS cell corresponds to the first array bin
Both problems have been fixed and the fix will be contained |
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Thu Jul 2 13:20:51 2015, Felix Bachmair, Creation of Object files
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HI,
We are using the DRS4 Board in the EUDAQ framework [1]. We wrote a a Producer based on the software of the evaluation board, which is using the
DRS class/header/src files. |
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Fri Jul 3 17:13:27 2015, Stefan Ritt, Creation of Object files
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Hi Felix,
the distribution does not contain any binaries, since there are too many Linux distributions around, so everybody compiles from the sources under
Linux. Do you want me to just add libDRS.so to the official Makefile? Actually you are the first one asking for this. Would it be beneficial to have this |
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Mon Jul 6 11:30:56 2015, Felix Bachmair, Creation of Object files
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Hi Stefan,
That's fine for me. I thought it might be interesting for others as well..
Cheers |
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Mon Jul 6 19:25:27 2015, Stefan Ritt, Creation of Object files
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Anyhow it would be nice if you just post your Makefile here, which runs with the standard distribution, so people can use it if needed.
Stefan
Felix |
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Tue Jul 7 09:29:21 2015, Felix Bachmair, Creation of Object files
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Yes of course no problem.
You can download via github https://github.com/veloxid/DRS4-v5-shared and I
also put it in the attachment. |