Dear Stefan,

I have emailed drs4@psi.ch a couple of times regarding the pricing of the evaluation kits for academic use in India and have not received any reply and hence writing in this forum. Could you please help me in this?

Thanks and regards,
Deepak Samuel.

The Display window in the Oscilloscope software shows averaging capabilites but I have not been able to activate these. Is it possible to activate averaging with the existing oscilloscope software? Thanks

Dear Steffan:

We have been able to use the DRS4 using a Raspberry Pi but we have not been able to use the external trigger. What we are doing is basically comment out the code shown below (downloaded from PSI) to use the hardware trigger and uncomment the code to use the external trigger. We have not been able to get external trigger to work. Could you see what could be wrong?

Thanks

Diego

/* use following line to turn on the internal 100 MHz clock connected to all channels  */
   //b->EnableTcal(1);

   /* use following lines to enable hardware trigger on CH1 at 50 mV positive edge */

   /*
   if (b->GetBoardType() >= 8) {        // Evaluaiton Board V4&5
      b->EnableTrigger(1, 0);           // enable hardware trigger
      b->SetTriggerSource(1<<0);        // set CH1 as source
   } else if (b->GetBoardType() == 7) { // Evaluation Board V3
      b->EnableTrigger(0, 1);           // lemo off, analog trigger on
      b->SetTriggerSource(0);           // use CH1 as source
   }
   b->SetTriggerLevel(0.05);            // 0.05 V
   b->SetTriggerPolarity(false);        // positive edge
   */

   /* use following lines to set individual trigger elvels */
   //b->SetIndividualTriggerLevel(1, 0.1);
   //b->SetIndividualTriggerLevel(2, 0.2);
   //b->SetIndividualTriggerLevel(3, 0.3);
   //b->SetIndividualTriggerLevel(4, 0.4);
   //b->SetTriggerSource(15);

   b->SetTriggerDelayNs(0);             // zero ns trigger delay

   /* use following lines to enable the external trigger */
   if (b->GetBoardType() == 8) {     // Evaluaiton Board V4
      b->EnableTrigger(1, 0);           // enable hardware trigger
      b->SetTriggerSource(1<<4);        // set external trigger as source
   } else {                          // Evaluation Board V3
      b->EnableTrigger(1, 0);           // lemo on, analog trigger off
    }

Hi,
I am considering using the DRS4 evaluation board as an ADC card for the wire chamber in the physics lab (VP) experiment at ETH. However, the wire 
chamber has 8 outputs, so I would need to have two of such boards. Is it possible to synchronise them, online or offline? From the website, it looks 
like yes, but the documentation says that these features (trigger and clock out) may not have been implemented in firmware yet. Could you tell me 
the status?

Thank you very much,

Dmitry.

 Hi,

Does anyone has a program that converts a binary file from drsosc  output to a ROOT tree format?

Thank you,

Dmitry.

Hi,

I would like to save the waveform in a binary format. When I click Save then change format from xml to dat in the menu. I still get xml format but with dat extension.

what I am missing?

Thank you,

Dmitry.

 Thanks that fixed it!

Dmitry

Hi,

I have install drs software on ASUS EeeBox with Ubuntu 12.04 LTS. When I try to use ./drsosc the oscilloscope window flickers. Can you suggest what might be the problem?

Here is some more info:

******************************************************

System:

Ubuntu 12.04 LTS

Memory: 992.9 MiB

CPU: Intel Atom CPU N270 @ 1.6GHz x 2

32 Bit

Disc: 156.5 GB

***************************************

Software:

Due to version Ubuntu I had to install the wxWidgets from source (wxWidgets with x11)

Thank you,

Dmitry.

yes the problem was in wxWidgets, I have downgraded the ubuntu version and installed packaged version of wxWidgets. Now it works without problems.

Thank you,

Dmitry. 

 Dear Stefan,

I am trying to synchronise the readout of two test boards, one is the DRS4 test board, the other is PSI46 test board (used for the readout of  CMS pixel chip) for the offline analysis. I think that the most secure way to accomplish this is to pass a trigger number from one test board to the other.

The PSI46 test board has a software which allows it to accept a 16 bit number following the trigger pulse. I was wondering whether it would be possible for DRS4 board to generate such a trigger number on the trigger out line after sending the trigger. Also would it be possible to record this trigger number for every event stored by DRS4 board?

If none of this possible or requires a lot of time, then as a minimum, would it be possible to send-through only the triggers that were recorded by the DRS4 board?

Please let me know if you have better idea how to do this.

Thank you very much,

Dmitry.

Dear Stefan

Is there an easy way to reduce sampling speed below 0.7 GSPS? I would like to record traces up to 5 usec long.

Thank you

Dmitry 

 Dear Stefan

Last month I was using a DRS4 evaluation board to digitise the signal from the charged particles in piM1 beam line at PSI. The beam in piM1 is a mixture of pions with a small percentage of protons. Pions are close to minimum ionising and were producing the signals on the order of 250 mV (Landau distributed). The protons at this momentum (250 MeV) are not minimum ionising  and produced much higher signals ( I could not exactly measure them because they were of scale for the DRS4 board). The pulses were on the order of 0.5 usec long. At low rate (~1kHz) the board was able to handle them, but when I turned the rate of particles to about ~300 kHz, the channel went flat. My question is whether the evaluation board has some type of input protection that would be possible to replace? Or does that mean that I have burned the input of the DRS4 board itself? Other channels behaving normal.

Thank you

Dmitry. 

 Dear Stefan

Thank you very much for the answer. I did not have a chance to implement this yet.

I have a  follow up question: 

Is the following sequence already implemented in the DRS oscilloscope program? Could you point me to an example of such a sequence?

- arm DRS4 board

- wait for trigger by calling IsBusy()

- read out DRS4 board

- call StartDomino(), which re-enables also the trigger through

Cheers

Dmitry

 Hi everyone,

Has anyone tried to synchronize 2 (two) DRS4 evaluation boards readout by the same computer? I have read about some attempts on this board in the past, but I do not know if they have succeeded. If yes, could you share your experience and/or software.

Thank you very much,

Dmitry.

 Hi Stefan,

Thank you for pointing me to the document. Does it apply only to version 5 of the board or can it be applied also to version 4 (which is the one I have)?

Dmitry

 Hi,

I am getting the following compilation error when trying to compile version 5.0.2 software:

---------------------------------------------------------------------------------------------

Full error report:

g++ -g -O2 -Wall -Wuninitialized -fno-strict-aliasing -Iinclude -I/usr/local/include -DOS_LINUX -DHAVE_USB -DHAVE_LIBUSB10 -DUSE_DRS_MUTEX -I/usr/lib64/wx/include/gtk

Hi Stefan,

Unfortunately that did not work and from suggestions in the error I do see a good solution:

----------------------------

src/DOFrame.cpp: In member function ‘void DOFrame::LoadConfig(char*, int)’:

src/DOFrame.cpp:617:25: error: call of overloaded ‘wxString(char [1024])’ is ambiguous

src/DOFrame.cpp:617:25: note: candidates are:

/usr/include/wx-2.8/wx/string.h:722:3: note: wxString::wxString(const wxWCharBuffer&) <near match>

/usr/include/wx-2.8/wx/string.h:722:3: note:   no known conversion for argument 1 from ‘char [1024]’ to ‘const wxWCharBuffer&’

/usr/include/wx-2.8/wx/string.h:692:3: note: wxString::wxString(wxChar, size_t) <near match>

/usr/include/wx-2.8/wx/string.h:692:3: note:   no known conversion for argument 1 from ‘char [1024]’ to ‘wxChar {aka wchar_t}’

/usr/include/wx-2.8/wx/string.h:690:3: note: wxString::wxString(const wxString&) <near match>

/usr/include/wx-2.8/wx/string.h:690:3: note:   no known conversion for argument 1 from ‘char [1024]’ to ‘const wxString&’

/usr/include/wx-2.8/wx/string.h:682:3: note: wxString::wxString(int) <near match>

/usr/include/wx-2.8/wx/string.h:682:3: note:   no known conversion for argument 1 from ‘char [1024]’ to ‘int’

---------------------------------

let me know if you see one.

Thank you,

Dmitry.

_____________________________________________________________________________________________________________________________________________

Full error:

++ -g -O2 -Wall -Wuninitialized -fno-strict-aliasing -Iinclude -I/usr/local/include -DOS_LINUX -DHAVE_USB -DHAVE_LIBUSB10 -DUSE_DRS_MUTEX -I/usr/lib64/wx/include/gtk

2-unicode-release-2.8 -I/usr/include/wx-2.8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -pthread -c src/DOFrame.cpp

src/DOFrame.cpp: In member function ‘void DOFrame::LoadConfig(char*, int)’:

src/DOFrame.cpp:617:14: error: invalid conversion from ‘char*’ to ‘wxChar {aka wchar_t}’ [-fpermissive]

In file included from /usr/include/wx-2.8/wx/memory.h:16:0,

                 from /usr/include/wx-2.8/wx/object.h:20,

                 from /usr/include/wx-2.8/wx/wx.h:16,

                 from include/DRSOscInc.h:9,

                 from src/DOFrame.cpp:9:

/usr/include/wx-2.8/wx/string.h:1413:13: error:   initializing argument 1 of ‘wxString& wxString::operator+=(wxChar)’ [-fpermissive]

[dmitry@kitkat ~]$ more error-drs4v5_2

g++ -g -O2 -Wall -Wuninitialized -fno-strict-aliasing -Iinclude -I/usr/local/include -DOS_LINUX -DHAVE_USB -DHAVE_LIBUSB10 -DUSE_DRS_MUTEX -I/usr/lib64/wx/include/gtk

2-unicode-release-2.8 -I/usr/include/wx-2.8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -pthread -c src/DOFrame.cpp

src/DOFrame.cpp: In member function ‘void DOFrame::LoadConfig(char*, int)’:

src/DOFrame.cpp:617:25: error: call of overloaded ‘wxString(char [1024])’ is ambiguous

src/DOFrame.cpp:617:25: note: candidates are:

In file included from /usr/include/wx-2.8/wx/memory.h:16:0,

                 from /usr/include/wx-2.8/wx/object.h:20,

                 from /usr/include/wx-2.8/wx/wx.h:16,

                 from include/DRSOscInc.h:9,

                 from src/DOFrame.cpp:9:

/usr/include/wx-2.8/wx/string.h:722:3: note: wxString::wxString(const wxWCharBuffer&) <near match>

/usr/include/wx-2.8/wx/string.h:722:3: note:   no known conversion for argument 1 from ‘char [1024]’ to ‘const wxWCharBuffer&’

/usr/include/wx-2.8/wx/string.h:692:3: note: wxString::wxString(wxChar, size_t) <near match>

/usr/include/wx-2.8/wx/string.h:692:3: note:   no known conversion for argument 1 from ‘char [1024]’ to ‘wxChar {aka wchar_t}’

/usr/include/wx-2.8/wx/string.h:690:3: note: wxString::wxString(const wxString&) <near match>

/usr/include/wx-2.8/wx/string.h:690:3: note:   no known conversion for argument 1 from ‘char [1024]’ to ‘const wxString&’

/usr/include/wx-2.8/wx/string.h:682:3: note: wxString::wxString(int) <near match>

/usr/include/wx-2.8/wx/string.h:682:3: note:   no known conversion for argument 1 from ‘char [1024]’ to ‘int’

make: *** [DOFrame.o] Error 1 

Dear Stefan,

I daisy-chained two boards (master sn#: 2514 - slave sn#: 2513) each with 2048 samples. However, when I use drsosc and put check mark in "configure multi-board daisy-chain" I see only 1024 samples. Namely, the first 1024 samples, the last part is missing. When I remove this check mark, I see all 2048 samples. Is there a simple software fix for this or is it a more involved firmware limitation? 

Other parameters: software version: 5.0.4, firmware version 21305, configured for 0.7 GSPS, display at 500 ns/div

Thank you,

Dmitry Hits.

Hi Stefan

Any chance you have time to fix the software for multiboard configuration with 2048 samples each. I tried 5.0.5, but drsosc still shows only half of the waveform.

Dmitry

Hi everyone,

Did anyone have a "missing sliders problem" in GUI (see attachment)  accompanied by the following message in the terminal.

(drsosc:4611): Gtk-WARNING **: 14:05:11.249: Negative content width -4 (allocation 20, extents 12x12) while allocating gadget (node scale, owner GtkScale)

(drsosc:4611): Gtk-WARNING **: 14:05:11.249: Negative content width -2 (allocation 0, extents 1x1) while allocating gadget (node trough, owner GtkScale)

If yes, how did you solve it?

All ideas are appreciated!

Cheers,

Dmitry