 Mon Oct 29 18:30:28 2012, Martin Petriska, GetWave
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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? |
 Tue Nov 13 11:26:32 2012, Stefan Ritt, GetWave
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Martin Petriska wrote:
I have some question according to GetWave function. In drs_exam.cpp simple GetWave(0,0,wave_array[]) |
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Thu Nov 1 20:08:33 2012, hongwei yang, DRS4 firmware
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Hi,
We are using drs4 board, but oscilloscope app will somehow stop to work if we config trigger into "or and", When I
look into the drs4 firmware file drs4_eval3_app.vhd, I couldn't find the trigger_config value assignment which is mentioned at(#7 offset 0x1E from 31 downto |
Thu Nov 1 20:17:42 2012, Stefan Ritt, DRS4 firmware 
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hongwei yang wrote:
Hi, |
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Thu Nov 1 20:21:44 2012, hongwei yang, DRS4 firmware
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Stefan Ritt wrote:
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Thu Nov 1 20:25:53 2012, hongwei yang, DRS4 firmware
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hongwei yang wrote:
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Thu Nov 1 20:32:03 2012, Stefan Ritt, DRS4 firmware
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hongwei yang wrote:
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Thu Nov 1 20:46:53 2012, hongwei yang, DRS4 firmware
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Stefan Ritt wrote:
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Fri Oct 12 14:06:04 2012, Moritz von Witzleben, DRS abbreviation
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Hello,
what is the abbreviation of DRS?
Thanks and kind Regards, |
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Fri Oct 12 14:09:37 2012, Stefan Ritt, DRS abbreviation
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Moritz von Witzleben wrote:
Hello, |
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Thu Oct 4 20:50:36 2012, Zach Miller, DRS5
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Hi,
Our group had previously heard that a "DRS-5.0" might be on the horizon and that it may have ethernet capabilities as well as 16-input
channels (we heard this when ordering the DRS-4). Is this still in the works and accurate information? If so, is there a rough estimate to the "release |
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Thu Oct 4 20:59:18 2012, Stefan Ritt, DRS5
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Zach Miller wrote:
Hi, |
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Thu Oct 4 21:07:27 2012, Zach Miller, DRS5
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Stefan Ritt wrote:
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Tue Aug 28 17:52:45 2012, Zach Miller, DRS-4.0.0 DOScreen.cpp
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Hi,
I found an old thread regarding a fix for DOScreen.cpp for DRS-3.1.0, that fixes an "ambiguous overload problem." Currently when I attempt
to build the drs-4.0.0, I get this similar error: |
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Wed Aug 29 10:52:44 2012, Stefan Ritt, DRS-4.0.0 DOScreen.cpp
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Zach Miller wrote:
Hi, |
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Wed Aug 29 16:42:42 2012, Zach Miller, DRS-4.0.0 DOScreen.cpp
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Stefan Ritt wrote:
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Wed Aug 29 16:45:36 2012, Stefan Ritt, DRS-4.0.0 DOScreen.cpp
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Zach Miller wrote:
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Wed Aug 29 16:57:49 2012, Zach Miller, DRS-4.0.0 DOScreen.cpp
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Stefan Ritt wrote:
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Wed Aug 1 17:42:32 2012, Mayank S. Rajguru, Calculation of loop filter parameters (R,C1and C1) for 1 GHz
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Hi,
we are planning to use the DRS4 in our board for 1 GHz sampling and digitization.
I have seen in the data sheet that "For the PLL to work, an external loop filter is required. This filter ensures quick locking and stable |
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Mon Aug 6 02:44:00 2012, Stefan Ritt, Calculation of loop filter parameters (R,C1and C1) for 1 GHz
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Mayank S. Rajguru wrote:
Hi, |
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Mon Jul 9 14:14:48 2012, Ivan Petrov, Problem compiling drs_exam.cpp on windows
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Hello again. I have not got evaluation board yet, but already faced some difficulties:) I'm trying to compile drs_exam.cpp on Windows 7 using dev-c++
with imagelib-2 and WxWindows 2.4.2 DevPaks installed, but nothing works. Compile log is attached. Honestly, I'm not very familiar with c++, so any suggestions
will be helpful. Thank you. |
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Tue Jul 10 13:15:00 2012, Stefan Ritt, Problem compiling drs_exam.cpp on windows
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Ivan Petrov wrote:
Hello again. I have not got evaluation board yet, but already faced some difficulties:) I'm trying to |
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Wed Jul 11 10:04:51 2012, Ivan Petrov, Problem compiling drs_exam.cpp on windows
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Stefan Ritt wrote:
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Tue Mar 20 16:23:33 2012, Martin Petriska, triger for measuring time between pulses in channels
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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 |
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Tue Mar 20 16:33:50 2012, Stefan Ritt, triger for measuring time between pulses in channels
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Martin Petriska wrote:
I have two BaF2 detectors with PMT connected to Ch1 and Ch2. At this time Im using external triger |
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Wed Mar 21 09:33:00 2012, Martin Petriska, triger for measuring time between pulses in channels
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Stefan Ritt wrote:
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Wed Mar 21 09:39:33 2012, Stefan Ritt, triger for measuring time between pulses in channels
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Martin Petriska wrote:
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Wed Jun 20 10:40:21 2012, Ivan Petrov, triger for measuring time between pulses in channels
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Stefan Ritt wrote:
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Wed Jun 20 12:45:05 2012, Stefan Ritt, triger for measuring time between pulses in channels
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Ivan Petrov wrote:
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Wed Jun 20 14:36:01 2012, Ivan Petrov, triger for measuring time between pulses in channels
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Stefan Ritt wrote:
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Wed Jun 20 14:44:38 2012, Stefan Ritt, triger for measuring time between pulses in channels
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Ivan Petrov 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 |
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Mon Jun 25 14:21:13 2012, Stefan Ritt, triger for measuring time between pulses in channels
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Andrey Kuznetsov wrote:
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Mon Apr 23 10:38:51 2012, Guillaume Blanchard, DRS4 Initialization
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Hello,
I am writing a VHDL code to drive a DRS4 chip.
In order to configure the DRS4 chip, I have to set the "Config Register" and the "Write Shift Register" then ... (I do not |
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Wed Apr 25 13:42:37 2012, Stefan Ritt, DRS4 Initialization
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Guillaume Blanchard wrote:
Hello, |
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Wed Feb 15 18:08:13 2012, Yuji Iwai, Evaluation Board v4 Trigger/Clock Connectors
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| Quick question - what type of connectors are used for the trigger and clock in/out on the v4 eval board? |
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Sat Feb 4 11:59:26 2012, Zhongwei Du, what sort of detectors for physical experiment the DRS4 used?
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Hello.
We are designing a waveform sampling board for Si strip array detector ,whose rise time is less than 10 ns, which makes we doubt whether the
DRS4 can do more accurate than traditional charge integral circuit for charge measuring. |
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Mon Feb 6 08:15:38 2012, Stefan Ritt, what sort of detectors for physical experiment the DRS4 used?
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Zhongwei Du wrote:
Hello. |
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Tue Jan 31 08:10:37 2012, Stefan Ritt, IEEE Real Time 2012 Call for Abstracts
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Hello,
I'm co-organizing the upcoming Real Time Conference, which covers also fields of waveform processing and sampling, so it might be interesting for
people working with the DRS4 chip. If you have recent results, you could also consider to send an abstract to this conference. It will be nicely |
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Thu Jan 26 09:12:03 2012, Ravindra Raghunath Shinde, DRS4 Rev2.0 for analog pulse counting
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Hello,
We are using DRS4 Rev.2.0 board.
We want to measure number of pulses generated by charge particle detector. These negative going analog pulses are very fast having rise time |
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Thu Jan 26 09:15:42 2012, Stefan Ritt, DRS4 Rev2.0 for analog pulse counting
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Ravindra Raghunath Shinde wrote:
Hello, |
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Thu Jan 26 09:44:34 2012, Ravindra Raghunath Shinde, DRS4 Rev2.0 for analog pulse counting
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Stefan Ritt wrote:
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Thu Jan 26 09:49:38 2012, Stefan Ritt, DRS4 Rev2.0 for analog pulse counting
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Ravindra Raghunath Shinde wrote:
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Thu Jan 26 10:05:57 2012, Ravindra Raghunath Shinde, DRS4 Rev2.0 for analog pulse counting
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Stefan Ritt wrote:
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Thu Jan 19 23:26:26 2012, Heejong Kim, drs_exam.cpp for evaluation board version 4
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Hello,
I'm using DRS4 evaluation board version4 in Linux (Scientific Linux 5).
Version4 software (drs-4.0.0) was installed without any troubles. |
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Fri Jan 20 08:09:38 2012, Stefan Ritt, drs_exam.cpp for evaluation board version 4
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Heejong Kim wrote:
Hello, |
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Fri Jan 20 23:50:39 2012, Heejong Kim, drs_exam.cpp for evaluation board version 4
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Stefan Ritt wrote:
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Wed Dec 14 00:44:37 2011, Hao Huan, Synchronization Delay in the Firmware for 8051 Controller
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Hi Stefan,
I have a question regarding the DRS 4 evaluation board firmware for the 8051 controller embedded in the CY7C68013 USB chip:
on the board the controller is running at 12 MHz and the FIFO interface of the USB chip is running at 30 MHz, so the number of delay cycles for synchronization |
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Wed Dec 14 08:55:29 2011, Stefan Ritt, Synchronization Delay in the Firmware for 8051 Controller
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Hao Huan wrote:
Hi Stefan, |
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Mon Dec 12 16:43:04 2011, Stefan Ritt, DC coupled DRS4 input stage
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In the attachement you will find a working DC-coupled input stage to the DRS4 chip. The bandwidth of this design is about 700 MHz, the gain is 1.
The upper version does not have an additional input buffer. This is not a very "clean" design, since the differential driver has an input
impedance of 150 Ohm, which together with the 75 Ohm termination resistor gives about 50 Ohm termination. |
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Thu Apr 14 18:23:53 2011, Bob Hirosky, Fixes to DOScreen.cpp for recent built on linux
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Hello,
I was just building version 3.1.0 and ran into some problems in DOScreen.cpp. Basically the conversions from
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Fri Apr 15 08:28:54 2011, Stefan Ritt, Fixes to DOScreen.cpp for recent built on linux
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> Hello,
>
> I was just building version 3.1.0 and ran into some problems in DOScreen.cpp. Basically the conversions from
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Fri Dec 9 17:45:48 2011, Michael Büker, Fixes to DOScreen.cpp for recent built on linux
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> I was just building version 3.1.0 and ran into some problems in DOScreen.cpp. Basically the conversions from
> char* to wxString were generating "ambiguous overload" errors (in gcc 4.4.3, wx-2.8)
>
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Mon Oct 31 09:15:02 2011, Zhongwei Du, How to link PMT
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I want to measure the signal from PMT . But it is a current signal, should i just put a series resistance, or use a amplifier to convert it to voltage
signal before drs4?
Can you give me some advice ? |
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Tue Nov 1 11:07:02 2011, Stefan Ritt, How to link PMT
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Zhongwei Du wrote:
I want to measure the signal from PMT . But it is a current signal, should i just put a series resistance, |
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Sun Oct 23 23:32:28 2011, Hao Huan, Phase Shift for ADC Readout
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Dear Dr. Ritt,
In the DRS 4 datasheet it is recommended to sample the analog output of the chip after 8~10 ns of the SRCLK edge for it to stablize
and thus a phase shift between SRCLK and the ADC sampling clock is necessary. However in the latest version of the evaluation board firmware the phase-shifted |
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Mon Oct 24 10:30:15 2011, Stefan Ritt, Phase Shift for ADC Readout
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Hao Huan wrote:
Dear Dr. Ritt, |
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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. |
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Sat Oct 22 00:40:02 2011, Stefan Ritt, DRS4 eval board: readout rate
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Aurelien Bouvier wrote:
Hi, |