 Mon Feb 29 12:58:17 2016, Dmitry Philippov, baseline shift 
|
Hello! My name is Dmitry. I am from SiPM Lab is NRNU MEPhI (Russia, Moscow). We bought DRS4 evaluation board V5 with firmware 21305. We use 5.0.4 build
21911 2015-11-23 software version (and before that we used 5.0.3 build 21508, 2014-10-15) with Windows 7 32bit.
We observe some strange behaviour. When we save waveforms (in xml or binary data) we see that some of them have the baseline shifted of about |
|
Tue May 27 13:46:18 2014, Dominik Neise, Spikes in DRS4 data on custom baord.
|
We see quite some spikes in our DRS4 sampled data in FACT. We see different types of spikes:
single cell spikes, usually showing a large amplitude of 200mV
double cell spikes, usually only in the order of 20mV.
Even triple and quadro cell spikes are rarely seen.
The double cell spikes often occur as symmetrical double cell spikes mirrored |
|
Fri Mar 11 19:50:18 2016, Dominik Neise,
|
Hello Stefan,
I just stumbled again over a phrase in the DRS4 datasheet I never really understood, but didn't find the time to ask.
On page 8 it says: "An internal circuit ensures that the write signal is always 16 cells wide." |
|
Wed Jun 1 22:29:01 2016, Dominik Neise, problems when stop cell >= 767 ??
|
Hello Stefan,
some colleages told me a story, I was neither able to confirm nor find anything in the datsheet about. According to them:
For some internal reason of the DRS4, if the “stop capacitor” of the DRS4 is >= 767, the true stop channel is one |
|
Tue Sep 22 17:45:26 2020, Elmer Grundeman, External triggering
|
Dear all,
I had a question about timing jitter and external triggering.
I trigger the board externally with a 3V pulse from a DG645 delay generator and as a test I use the gated charge function to integrate another |
 Wed Oct 7 11:17:52 2020, Elmer Grundeman, External triggering
|
I will try that, thanks!
Stefan
Ritt wrote:
The trigger is there only to trigger the chip, but cannot be used as |
|
Tue May 21 12:39:00 2013, Enrico Conti, mac osx 10.6
|
Hi,
I would like to use the DRS4 with my macbook pro running osx 10.6.8.
|
|
Tue May 21 17:45:05 2013, Enrico Conti, mac osx 10.6
|
>
> Can it be that you have a old PowerPC MAC? I have no experience with that, but probably you have to adjust the Makefile
> ans set some flags correctly for PPC instead of Intel.
|
|
Tue May 21 17:48:45 2013, Enrico Conti, mac osx 10.6
|
>
> it looks like 64bit vs 32bit problem, you have to compile all libraries for the same architecture. Maybe, make clean to
> remove all precompiled object files .o and recompile it again. Try to compile first that simple example without wxWidgets.
|
|
Tue May 21 18:30:11 2013, Enrico Conti, mac osx 10.6
|
> > >
> > > it looks like 64bit vs 32bit problem, you have to compile all libraries for the same architecture. Maybe, make clean to
> > > remove all precompiled object files .o and recompile it again. Try to compile first that simple example without wxWidgets.
|
|
Fri May 24 17:58:07 2013, Enrico Conti, mac osx 10.6
|
> > >
> > > it looks like 64bit vs 32bit problem, you have to compile all libraries for the same architecture. Maybe, make clean to
> > > remove all precompiled object files .o and recompile it again. Try to compile first that simple example without wxWidgets.
|
|
Sat May 25 12:45:46 2013, Enrico Conti, mac osx 10.6
|
> > I made some progress. Understood what was wrong in the make phase. You have only to add the option -arch i386 in the CFLAGS line of the makefile.
> > Then the make is ok, it produces the 3 executables. drs_exam and drscl seem to work correctly.
> > DRSOsc.app does not work as app, in the sense that if you click it, an error message comes saying "You can't use this version of the application DRSOsc.app |
|
Mon May 22 18:27:56 2017, Esperienza Giove, Invalid magic number 0000
|
Hello everybody!
After some times i init my board, or if i stop the program during the acquisition, i get the error message "Invalid magic 0000". The
only way i can solve this problem is to physically disconnect and plug in again the USB cable. |
|
Thu May 25 20:17:41 2017, Esperienza Giove, Invalid magic number 0000
|
Hello, thanks for your answer. Unluckily if i try to reset in this way it keeps hanging
musb_write: requested 10, wrote 0, errno -7 (Unknown error 18446744073709551609)
musb_read error 0 |
|
Thu May 25 20:20:57 2017, Esperienza Giove, Invalid magic number 0000
|
Hello, thanks for your answer. Unluckily if i try to reset in this way it keeps hanging
musb_write: requested 10, wrote 0, errno -7 (Unknown error 18446744073709551609)
musb_read error 0 |
|
Tue May 30 20:45:30 2017, Esperienza Giove, Setting input range
|
Hello,
is it possible to set a completely negative input range like -1 to 0 or -0.95 to 0.05 ? |
|
Tue May 30 21:22:10 2017, Esperienza Giove, Setting input range
|
Thank you
Stefan
Ritt wrote:
See elog:531 |
|
Thu Jul 6 15:10:48 2017, Esperienza Giove, Trigger setting (AND AND) OR (AND AND)
|
Hello there,
is it possible to setup trigger in double AND configuration (a pair in and or other pair in and).
eg (CH 1 AND CH 2 ) OR ( CH 3 AND CH4) |
|
Thu Dec 13 12:03:29 2012, Evgeni, DRS-4 trigger
|
How to configure DRS oscilloscope for the oscillations with an amplitude greater than the value of the exposed
in the trigger (internal). |
|
Thu Dec 13 19:49:47 2012, Evgeni, DRS-4 trigger
|
Stefan Ritt wrote:
|