ELOG DRS4 Forum

DRS4

Did you copy the udev rule 41-drs.rules into /etc/udev/rules.d/ ?

Which operating system are you using?

Cheers
Felix

dante wrote:

I have just installed DRS4, but when I try to view it from the USB it don't work. Why?

[ .../home $] lsusb -d 04b4:1175 -v

Bus 002 Device 008: ID 04b4:1175 Cypress Semiconductor Corp.
Couldn't open device, some information will be missing
Device Descriptor:

443

Fri Aug 7 18:41:37 2015

dante

DRS4

I have just installed DRS4, but when I try to view it from the USB it don't work. Why?

[ .../home $] lsusb -d 04b4:1175 -v

Bus 002 Device 008: ID 04b4:1175 Cypress Semiconductor Corp.
Couldn't open device, some information will be missing
Device Descriptor:

442

Thu Jul 23 13:46:12 2015

Measure the time between different samples

> Hi,
>   I have a question using a data acquisition card base on DRS4 chip. How can I measure the time between several samples of one channel&#65292;with the accuracy of like nanoseconds , for I am using the internal trigger. Is there any complete work about this problem&#65311;
>   One conceivable way is using an global counter in FPGA, but I'm wondering how to synch the counter with the DRS4 sampling.
>   Thanks.
> Chenfei Yang

I do not know exactly what you do, so it's hard to give an advice. All I can say that the DRS4 Evaluation Board from PSI allows time measurements between two channels in the order of a few pico seconds. You can download the software for this board from the DRS4 web site and 
have a look how things are done.

The trigger position is not a good time reference, since the trigger position jitters by a few samples. So if you want to measure the time of a signal versus a trigger, you have to put this trigger in a free channel of the DRS4 and use that as a time reference.

Best regards,
Stefan

441

Mon Jul 20 09:25:38 2015

Chenfei Yang

Measure the time between different samples

Hi,
  I have a question using a data acquisition card base on DRS4 chip. How can I measure the time between several samples of one channel&#65292;with the accuracy of like nanoseconds , for I am using the internal trigger. Is there any complete work about this problem&#65311;
  One conceivable way is using an global counter in FPGA, but I'm wondering how to synch the counter with the DRS4 sampling.
  Thanks.
Chenfei Yang

440

Tue Jul 7 09:29:21 2015

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.

It's tested with Ubuntu, Fedora and RHEL.

For mac OSX one needs to create a dylib out of the so file.

Cheers

Felix

Stefan Ritt wrote:

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 Bachmair wrote:

Hi Stefan,

That's fine for me. I thought it might be interesting for others as well..

Cheers

Felix

Stefan Ritt wrote:

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 in the distribution, or can you just maintain your own Makefile in the github repository?

Stefan

Felix Bachmair wrote:

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.

In order to make it work we needed to compile it with a shared object file. [2]

Would it be possbile to include a shared object in the 'official' release?

Cheers

Felix

Attachment 1: Makefile

########################################################
#
#  Makefile for drsosc, drscl and drs_exam 
#  executables under linux
#
#  Requires wxWidgets 2.8.9 or newer
#
########################################################

# check if wxWidgets is installed
HAVE_WX       = $(shell which wx-config)
ifeq ($(HAVE_WX),)
$(error Error: wxWidgets required to compile "drsosc")
endif

# check for OS
OS            = $(shell uname)
ifeq ($(OS),Darwin)
DOS           = OS_DARWIN
else
DOS           = OS_LINUX
endif

CFLAGS        = -g -O2 -Wall -Wuninitialized -fno-strict-aliasing -Iinclude -I/usr/local/include -D$(DOS) -DHAVE_USB -DHAVE_LIBUSB10 -DUSE_DRS_MUTEX
LIBS          = -lpthread -lutil -lusb-1.0

ifeq ($(OS),Darwin)
CFLAGS        += -stdlib=libstdc++
endif         

# wxWidgets libs and flags
WXLIBS        = $(shell wx-config --libs)
WXFLAGS       = $(shell wx-config --cxxflags)

CPP_OBJ       = DRS.o averager.o ConfigDialog.o DOFrame.o DOScreen.o DRSOsc.o MeasureDialog.o Measurement.o Osci.o InfoDialog.o DisplayDialog.o AboutDialog.o EPThread.o TriggerDialog.o rb.o
OBJECTS       = musbstd.o mxml.o strlcpy.o
SHARED_OBJECTS= libDRS.so


ifeq ($(OS),Darwin)
all: drsosc drscl drs_exam drs_exam_multi DRSOsc.app
else
all: drsosc drscl drs_exam drs_exam_multi
endif

DRSOsc.app: drsosc
	-mkdir DRSOsc.app
	-mkdir DRSOsc.app/Contents
	-mkdir DRSOsc.app/Contents/MacOS
	-mkdir DRSOsc.app/Contents/Resources
	-mkdir DRSOsc.app/Contents/Resources/English.lproj
	echo 'APPL????' > DRSOsc.app/Contents/PkgInfo
	cp Info.plist DRSOsc.app/Contents/Info.plist
	cp DRSOsc.icns DRSOsc.app/Contents/Resources
	cp drsosc DRSOsc.app/Contents/MacOS/DRSOsc

drsosc: $(OBJECTS) $(CPP_OBJ) main.o
	$(CXX) $(CFLAGS) $(OBJECTS) $(CPP_OBJ) main.o -o drsosc $(LIBS) $(WXLIBS)

drscl: $(OBJECTS) DRS.o averager.o drscl.o
	$(CXX) $(CFLAGS) $(OBJECTS) DRS.o averager.o drscl.o -o drscl $(LIBS) $(WXLIBS)

	
drs_exam: $(OBJECTS) drs_exam.o $(SHARED_OBJECTS)
#	$(CXX) $(CFLAGS) -L . $(OBJECTS) -lDRS  drs_exam.o -o drs_exam $(LIBS) $(WXLIBS)
	$(CXX) $(CFLAGS) $(OBJECTS) -L. drs_exam.o -lDRS -o drs_exam $(LIBS) $(WXLIBS)

drs_exam_multi: $(OBJECTS) DRS.o averager.o drs_exam_multi.o
    #old $(CXX) $(CFLAGS) $(OBJECTS) DRS.o averager.o drs_exam_multi.o -o drs_exam_multi $(LIBS) $(WXLIBS)
	$(CXX) $(CFLAGS) $(OBJECTS) -L. DRS.o averager.o drs_exam_multi.o -o drs_exam_multi -lDRS $(LIBS) $(WXLIBS)

main.o: src/main.cpp include/mxml.h include/DRS.h
	$(CXX) $(CFLAGS) $(WXFLAGS) -c $<

drscl.o: src/drscl.cpp include/mxml.h include/DRS.h
	$(CXX) $(CFLAGS) -c $<

drs_exam.o: src/drs_exam.cpp include/mxml.h include/DRS.h
	$(CXX) $(CFLAGS) -c $<

drs_exam_multi.o: src/drs_exam_multi.cpp include/mxml.h include/DRS.h
	$(CXX) $(CFLAGS) -c $<

$(CPP_OBJ): %.o: src/%.cpp include/%.h include/mxml.h include/DRS.h
	$(CXX) $(CFLAGS) $(WXFLAGS) -c $<

$(OBJECTS): %.o: src/%.c include/mxml.h include/DRS.h
	$(CC) $(CFLAGS) -c $<
	
	
$(SHARED_OBJECTS): %.so:  DRS.o mxml.o averager.o musbstd.o
	# Make Shared objectss
	#  g++ -Wall -shared -fPIC -o libDRS.so src/DRS.cpp src/averager.cpp src/mxml.c -I include/
	# < $<
	# @ $@
	# %.so
	#g++ -Wall -shared -fPIC -o libDRS.so src/DRS.cpp src/averager.cpp src/mxml.c -I include/")
	 $(CXX) $(CFLAGS) $(WXFLAGS) -Wall -shared -fPIC -o $@ -I include/ src/DRS.cpp src/averager.cpp src/mxml.c  src/musbstd.c $(LIBS) $(WXLIBS)  

clean:
	rm -f *.o  *.so drscl drsosc

439

Mon Jul 6 19:25:27 2015

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 Bachmair wrote:

Hi Stefan,

That's fine for me. I thought it might be interesting for others as well..

Cheers

Felix

Stefan Ritt wrote:

Hi Felix,

Stefan

Felix Bachmair wrote:

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.

In order to make it work we needed to compile it with a shared object file. [2]

Would it be possbile to include a shared object in the 'official' release?

Cheers

Felix

438

Mon Jul 6 11:30:56 2015

Hi Stefan,

That's fine for me. I thought it might be interesting for others as well..

Cheers

Felix

Stefan Ritt wrote:

Hi Felix,

Stefan

Felix Bachmair wrote:

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.

In order to make it work we needed to compile it with a shared object file. [2]

Would it be possbile to include a shared object in the 'official' release?

Cheers

Felix

437

Fri Jul 3 17:13:27 2015

Hi Felix,

Stefan

Felix Bachmair wrote:

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.

In order to make it work we needed to compile it with a shared object file. [2]

Would it be possbile to include a shared object in the 'official' release?

Cheers

Felix

436

Thu Jul 2 13:20:51 2015

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.

In order to make it work we needed to compile it with a shared object file. [2]

Would it be possbile to include a shared object in the 'official' release?

Cheers

Felix

435

Thu Jul 2 08:53:17 2015

Issue with Trigger rates below ~100Hz

Hi,

We did a further investigation of this problem:

We figured out that this issue seems to be related to the kernel.

We tested it now on two machines with Ubuntu 14.04.2 LTS (kernel 3.16.0-41), one with RHEL 6.6 (kernel 2.6.32) , one with Fedora 20 (kernel 3.18.7) and one with Mac OSX. We see this issue with the Ubuntu and the fedroa machines.Both have a kernel above 3.0 while RHEL has a kernel of 2.6

We can repoduce the problem on all input channels as a trigger.

I will try to find out what could be the cause of it.

Cheers

Felix

Felix Bachmair wrote:

We are working with the DRS 4 V5 version and we investigated an issue with the trigger at rates below ~120 Hz.

As long as we have a trigger rate of more than 125 Hz. everything seems to work fine and we are recording more or less all events.

As soon as we go lower in input trigger rate to 100Hz, we see a drop in trigger rates to approx 15 - 20 Hz.

When we use the new firmware we can see that the busy signal is 0 for much longer times than usual up to .5 seconds.

We made a plot of input trigger rate vs trigger rate of drs: https://plot.ly/~simon.corrodi/316

In the oscilloscope plots one can see the the trigger in in yellow and the trig out from drs board in blue.

Do you have any idea what could be the reason?

We also

434

Fri Jun 19 12:32:10 2015

Gregor Kramberger

drs 5.03 and windows 8.1

Gregor Kramberger wrote:

I have problems with driver installation on windows 8.1 (software version 5.03). I have sen that that has been an issue before (driver signing) and I would like to know if this has been solved. We run several DRS4 evaluation boards on different PCs all running Win7 without any problems. Therefore we are almost confident that it is related to Win 8.1. Thanks.

Solved. Need to restart Windows 8.1 (64 bit) in recovery mode and dissable driver signing as mandatory. Then it works fine.

433

Thu Jun 18 17:33:05 2015

Gregor Kramberger

drs 5.03 and windows 8.1

432

Tue Jun 16 22:26:41 2015

DRS4 Evaluation Board Osc Application

There is a horizontal position slider in the "Horizontal" box on the right side below the trigger delay. Use it.

Michael Buadelk wrote:

Hi, I have a DRS4 v5 evaluation board and I have a novice question about the oscilliscop application. When I connect it to a photo-detector (silicon photo-multiplier to be exact), the signal appears only on one half of the screen, and I cannot change it to be full screen, and pulse to be centered. I tried changing delay time and played around with the settings of the applicaton but no success. I'd apprecite if someone help me on this, probably very simple, problem.

431

Tue Jun 16 20:45:54 2015

Michael Buadelk

DRS4 Evaluation Board Osc Application

430

Fri Jun 5 13:32:03 2015

DRS4 firmware UCF constraints

Actually we should take this offline not to pester other DRS users which are not interested in this topic. Please call me directly (3728) at PSI.

/Stefan

429

Fri Jun 5 13:29:55 2015