Fri May 16 14:04:47 2014, Benjamin LeGeyt, simultaneous writing and reading with region of interest mode?
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Hello!
We're developing electronics based on the DRS4 to read out a breast PET scanner and our event rate will be quite high so we're concerned about
dead-time. with that in mind, I have a question regarding the mode of simultaneous writing and reading that is described in the DRS4 data sheet. |
Sat Oct 15 04:45:25 2011, Aurelien Bouvier, DRS4 eval board: readout rate
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Hi,
Our setup uses a DRS4 evaluation board (version 2.0).
Although we trigger the board at a rate of ~4kHz (on channel2), readout through USB2 is only happening at a rate of ~125Hz. |
Fri Sep 13 15:27:41 2019, Arseny Rybnikov, Scaler / How to modify the firmware to change the scaler integration time
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Hello,
We want to use the inner DRS4 counter(scaler) within more than the 100ms integration time. We guess that we need to modify the original
firmware around this point: |
Wed Oct 14 23:53:05 2009, Armin Kolb, DRS_exam using USB Evaluation Board with OS X
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For the users using a Macintosh,
after several hours the Evaluation Board is working on my Macintosh (intel).
1) install the development package with xcode, its on the OS X installation DVD |
Mon Sep 23 09:22:52 2013, Andrzej Rychter, Sampling Frequency: DRS4 eval board
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Is it possible to set sampling frequency at 100 MHz in DRS4 eval board? Trying to set 0.1GHz in Osci program results in around 0.7 GHz. In drscl.exe
i'm able to set freq at 0.1GHz but calibration is impossible.
Thank For Help! |
Mon Sep 23 09:51:48 2013, Andrzej Rychter, Sampling Frequency: DRS4 eval board
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Stefan Ritt wrote:
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Fri Feb 13 10:12:16 2015, Andrzej Grzeszczuk, drs4 and root
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Hello,
I compiled base file for drs system (DRS.cpp) to root framework (root.cern.ch) as dynamic library DRS.so. It can be used for building many
kind of applications under the root system. I applied it for older version of root 5.28 and for latest version 6.02 too. |
Fri Sep 16 22:06:07 2011, Andriy Zatserklyaniy, compilation error for version 4.0.0 on linux
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Hi Stefan,
When I compiled DRS4 software version 4.0.0 on Linux (Debian Squeeze) I got this compilation error:
g++ -g -O2 -Wall -Wuninitialized -fno-strict-aliasing -Iinclude -DOS_LINUX -DHAVE_LIBUSB -DUSE_DRS_MUTEX musbstd.o mxml.o strlcpy.o DRS.o ConfigDialog.o |
Tue Nov 19 04:33:22 2013, Andriy Zatserklyaniy, DRSOsc at Mac OS X Mavericks
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I installed Mac OS package on macbook (late 2013). DRSOsc starts to write file but freezes; need to be restarted to restore connection with DRS4
evaluation board (ordered Aug 2011).
When I ran from the command line, I see these messages: |
Tue Nov 19 21:49:37 2013, Andriy Zatserklyaniy, DRSOsc at Mac OS X Mavericks
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Stefan Ritt wrote:
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Sat Jun 23 00:29:52 2012, Andrey Kuznetsov, triger for measuring time between pulses in channels
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Stefan Ritt wrote:
On the evaluation board, yes. This board is not optimized for high readout rate. If you do your own |
Wed May 8 06:07:52 2013, Andrey Kuznetsov, DRS4 v2.0 Eval Board running on higher versions of DRS Oscilloscope program
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Hi,
I have an old v2.0 board that I just upgraded firmware on using v4.0.0 download package which has a drs4_eval1.bit for v2.0 boards containing firmware
15158. So I would like to use the latest DRS Oscilloscope program, due to the faster acquisition speeds and advanced calibration techniques, however I |
Wed May 8 19:50:01 2013, Andrey Kuznetsov, DRS4 installation on Windows 8 issues
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I'm also having trouble installing drivers and running DRSOsc program on another computer running Windows 8.
The issue with the driver is that it's not digitally signed. |
Thu Jul 25 01:31:29 2013, Andrey Kuznetsov, Evaluation Board Behavior
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alonzi wrote:
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Wed Aug 28 13:07:51 2013, Andrey Kuznetsov, Some bug fixes and questions
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For http://www.psi.ch/drs/DocumentationEN/manual_rev20.pdf:
0 0x02 15..8 board_type 5 for DRS4 USB Evaluation Board 1.1 ---> should instead say Evaluation Board 2.0 ?
I've been reviewing DRS.cpp v4.0.1 |
Thu Sep 5 10:01:00 2013, Andrey Kuznetsov, Some bug fixes and questions
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#11 0x080589de in DRSBoard::GetWave (this=0xb7456008, chipIndex=0, channel=0 '\000', waveform=0x40f24000, responseCalib=true, triggerCell=207, wsr=0,
adjustToClock=false, threshold=1, offsetCalib=true) at src/DRS.cpp:3380
This is calling: |
Mon Sep 9 06:49:36 2013, Andrey Kuznetsov, Some bug fixes and questions
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The DRSCallback *pcb is missing an if statement in the code when DRS Oscilloscope software isn't used when calibrating in function: int DRSBoard::CalibrateTiming(DRSCallback *pcb) |
Wed Sep 11 02:41:28 2013, Andrey Kuznetsov, USB connection stops
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Hi,
although I don't have a chance to test your code, it looks very similar to what I am using.
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Thu Jun 20 01:36:48 2019, Andrew Peck, Evaluation firmware wait_vdd state
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Dear Stefan,
I am working with others at UCLA on a custom made board built around the DRS4. We are in the process of writing firmware so I am adapting the
readout state machine from the evaluation board firmware. |
Mon Jun 24 23:07:35 2019, Andrew Peck, Evaluation firmware wait_vdd state
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Dear Stefan,
Thanks so much for clarifying this. We made wait_vdd a parameter controlled by software and will try to experiment with it to find some compromise
between deadtime and the offset added by the droop in VDD. |