An update. I have been successful in making modifications to drs_exam.cpp so that I can get 2048 samples per channel.. The main changes were to the size of the time_array and wave_array and adding a call to Set ChannelConfig(0,8,4). It was also necessary to change the parameters to GetWave so that the Trigger Cell and WSR values were passed to get the channel combinations correct (2048 channel.ppt).
I've moved on to try to increase the speed of acquisition (I get only about 500 events/sec) and trying to understand the corrections.Working through the source code slowly...
Here in Rockford, TN we just got a new DRS4 evaluation board (Serail # 2612, Board Type 9, Firmware 21305) which is labeled as combined 2048.
It looks like the drs_exam.cpp only works with 1024 samples per channel. We'd like to be able to get 2048 samples from each of the four channels but I am uncertain what code modifications are necessary support this.
Could you offer a suggestion? I've searched the forum for cascade and read several threads but they are pretty old. One even says it isn't supported in the evaluation board, but I think that is no longer the case.
Thanks for your help,
I am trying to get a DRS4 board to run on Windows 10. I am having problems with the driver installation. I am getting the follwoing message
"There is no driver selected for the device information set or element"
I had specified the path to look for the driver as C:\ProgramFilesx86\DRS\driver\. I also tried the option to look online for the driver. None works. Can anyone help?
Hey. Strange problem. Why does the compiler refer there at all? Library installed drsosc works
LINK : fatal error LNK1104: cannot open file "C:\meg\online\drivers\drs\libusb-1.0\libusb-1.0.lib"
Great, drs_exam compiles without problems. Now when you run the compiled file drs_exam writes board not found, but drsosc and drscl work without problems. What could possibly be the matter?
thanks for your patience
You have to change the path to libusb-1.0.lib to the one where you installed it.
Hey. Yes, the program is running as administrator. By the way, this is win10. Your drs_exam works fine. My drs_exam compiled wrote no board found. Maybe this is a problem like in the post https://elog.psi.ch/elogs/DRS4+Forum/698. Maybe there were solutions to the problems?
No idea. Maye some access problem. Have you tried to start your program under an admin account?
Hello. When compiling drs_exam, do you need to use a "static "version of usblib or a "dynamic" version?"The problem with "no board found" is not solved. Thanks for your help.
Could be. Have you tried that elog:657
Good afternoon, I use 5 boards in multi-mode, everything is connected according to the instructions. Can I measure the phase difference between the two signals on channel 1 and channel 20? with each board the phase shift is added +16 ns I can not figure out how to compensate for this. give thanks
I understand this, thanks. But my Chief does not understand this, he wants to see the phase difference without “crutches”. And what is meant in the manual 50 ps resolution? Maybe I just do not understand something? And if you submit a reference signal not in the mode of a garland, but simultaneously in parallel to all the boards, will this shift go? Thanks
Subtract 16 ns from your measured value ;-)
Does anybody have program for conversion from binary or xml to cern ROOT *.root file?
Thank you for any help you can provide,
Thank you for your fast and very helpful replay.
I made it work with drsosc version 4 but with version 5 i am getting weird results. Is it possible that they changed binary formatting?
I am trying to setup DRS inside radiation enclosure and would like to write a simple script that will automatically save certain number of events.
Could you please point to me an example that can I use for Mac OS? I saw there is drs_exam.cpp in the directory but was not able to get work in Mac OS. Any help would be greatly appreciated.
I have DSR4 eval board. Found that there are spikes in channels. Procedure Osc::RemoveSpikes to remove them looks litlle dificult. There is simple way, if you doesnt need to measure all 4 channels.Spikes are in all channels, and it looks like they are same in time and value between channels. To remove them, if you are not using one channel, substract that unused channel with spikes from used channel and your data will be without spikes. If you need all 4 inputs, then may be channel 9 could be substracted.
I have two BaF2 detectors with PMT connected to Ch1 and Ch2. At this time Im using external triger module to start DRS4. My evalution board is version 3 so I have no possibility to trigger on two or more pulses occurence on different channels. But I have this idea, trigger with analog trigger on channel 1 (start detector) will start measurement on all channels. After that using FPGA inside EVM to look if some value in Ch2 is bigger as treshold value for example 0,5V and if yes then send data by USB to PC, if signal in Ch2 is lower then restart measurement and wait on triger in Ch1. This way I want to eliminate false data transfer throw USB. Is this possible to implement it into DRS4 evaluation board firmware ?
It is muuuuch easier to upgrade to a V4 board!
Modification of firmware is not so easy. You have to learn and understand VHDL. Then, you have to add additional registers for this thresholds, which requires modification of the C library as well. The data inside the evaluation boards is not yet calibrated (this is only done on the C library), so you have an uncertainty of 30-40mV in this data.
Ok, except this, I would have a question regarding to the new trigering posibility in V4 board. At this time, I am using Ztec ZT4612 which has some pattern triger posibility. Output from this card is used as an external trigger. Regarding this I have found a problem. Pulses from PMT have about 5-8 ns width. But I need to measure time diferences between pulses in range from 0-50ns. Problem is, that coincidence between pulses is working only on short pulse area (5-8ns) when they are overlapped. Additionaly the result histogram of time diferences is proportional to the pulse shapes. I solve this problem enabling 20MHz LPF filter in ZT4612, so the pulses are wider and overlaped on larger area. But, how it is with the V4 board? Will it trigger if I have for example one 5ns pulse on begiinning of CH1 and second pulse for example 50 ns later on Ch2 with the same probability when pulses are in the same time position?
I have some question according to GetWave function. In drs_exam.cpp simple GetWave(0,0,wave_array) etc...is used. Is there primary (cell) calibration, secondary calibration (Readout) and remove Spikes used, as in DRS Oscilloscope application?
I switched from rev 3 to rev 4 board, but have some problems with triggering, board is now waiting for trigger (rev.3 is working). How to do in drs_exam.cpp for example triggering on Ch0 && CH1 ?
Software 4.0.0, windows version.
Here is old trigger initialisation:
Btw. Is it possible to set up different trigger Levels for each channel ?
(If there is some interest here is my code in Qt, still aplha) http://sourceforge.net/p/qtpals/code
Are there any plans to include reconstruction of nonuniform sampling in DRS4 to get uniformly sampled data?
Im now reading article IEEE Trans on Circ. ans Systems I, Vol.55 No.8 sept. 2008 Reconstruction of Nonuniformly Sampled Bandlimited Signals Usinga Differentiator–Multiplier Cascade by Stefan Tertinek and Christian Vogel
and plan to implement it, but may be somebody has it done before me.
> I would like to use the DRS4 with my macbook pro running osx 10.6.8.
> I have installed the wxWidgets and the libusb-1.0 libraries and I am using the Linux code vers. 4.0.1. After
> compilation, the following errors come out:
> ld: warning: in musbstd.o, file was built for unsupported file format which is not the architecture being linked
> ld: warning: in mxml.o, file was built for unsupported file format which is not the architecture being linked (i386)
> ld: warning: in main.o, file was built for unsupported file format which is not the architecture being linked (i386)
> Undefined symbols:
> "_main", referenced from:
> start in crt1.10.6.o
> ld: symbol(s) not found
> collect2: ld returned 1 exit status
> make: *** [drsosc] Error 1
> Do you have any idea on how to solve the problem ?? or maybe do you have a package working with osx 10.6 ? I
> remember to have seen, long time ago, a package that could work with 10.6 (or 10.5 ?), but I cannot find it now
> (but maybe I remember wrong).
> Thanks for any help,
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.
In v4 board, which channel has best calibration ?
Should it be possible to simulate v5 board and read calibration values for v4 board by other method .. for example using external calibration signal source connected to all channels?
Is it needed to detach all input signals from EVM board during calibration ?( I see there are switches on channel inputs.)
Some comments: averager.h, averager.cpp are missing in windows v.5 sources (it should be copied from linux sources)
PF2014 and thank You for development new EVM 5 and new time precision.
Hi, I read its possible to use channels 2,4,6 to extend 200ns to 400ns (1024bins to 2048).
Is it possible to use same channels to double sampling rate with paralel feeding, one channel delayed by Ts/2, for 5,12GS/s is it cca 3cm delay cable?