 Fri Dec 2 16:47:37 2016, Stefan Ritt, DRS4 Initiation
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No, I can't think of anything else. There is no intermediate addressing stage. The only thing which sometimes happens is that the QFN76 package is
not soldered correctly. If you don't have this under control, some pins might have a bad contact. You can check this by touching with a oscilloscope
probe not the PCB pads but really the pins from the side, which is a bit tricky. |
 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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Thu May 21 07:18:48 2020, Keita Mizukoshi, DRS4 Evaluation board control tool 'drscl' with macro file
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Dear experts,
I would like to use DRS4 evaluation board as DAQ system for small, table-top experiment. |
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Fri May 22 12:53:33 2020, Stefan Ritt, DRS4 Evaluation board control tool 'drscl' with macro file
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There is an example program in the distribution under software/drscl/drs_exam.cpp which is a stand-alone program to do what you need. It uses the C library
coming with the distribution. It configureres the board, defines a trigger, and then writes a few waveforms into a file. You can use it as a starting point
for your development. If you need any other language, you have to develop bindings to the C library. |
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Mon May 25 03:36:12 2020, Keita Mizukoshi, DRS4 Evaluation board control tool 'drscl' with macro file
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Thank you very much. That is what I wanted.
Stefan
Ritt wrote:
There is an example program in the distribution under software/drscl/drs_exam.cpp |
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Tue Jun 16 20:45:54 2015, Michael Buadelk, DRS4 Evaluation Board Osc Application
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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 |
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Tue Jun 16 22:26:41 2015, Stefan Ritt, DRS4 Evaluation Board Osc Application
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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 |
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Wed May 13 01:07:36 2015, Cosmin Deaconu, DRS4 Evaluation Board + Powered USB Hub
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I am trying to use 4 evaluation boards with a powered USB hub (since eventually, I will have to do this on a laptop). It seems like destroying
the DRS object is insufficent to properly close the boards when on the hub (i.e. I get usb read errors next time I run my program). When all the boards
are plugged into the computer, all is fine. This is on Linux using libusb1. My guess is something about resetting the port doesn't work properly |
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Sun Apr 5 22:16:48 2015, Julien Wulf, DRS4 Evaluation Board Baseline/Voltage Calibration
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Hi,
I`m trying to calibrate my DRS4 evoluation board to an input range of 0-1V but it doesn`t work.
1) First I tried to calibrate it with the drsosc (version 5.0.3) Software. The -0.5V - 0.5V calibration works, but during the 0 - 1V calibration |
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Tue Apr 21 12:52:18 2015, Stefan Ritt, DRS4 Evaluation Board Baseline/Voltage Calibration
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1) I tried to cablirate a V5 board with drsosc 5.0.3 and it just worked fine for me. No idea what went wrong in your case.
2) The "found 4096 stuck pixels on this board" can be safely ignored. It comes from the fact that the standard evaluation board has
four cannels unconnected (the DRS4 chip has 8 channels, four are connected to in the evaluation board and four are unconnected). So the software sees |
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Tue Apr 21 13:03:38 2015, Daniel Stricker-Shaver, DRS4 Evaluation Board Baseline/Voltage Calibration
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I also use Ubuntu 14.04 LTS and for my V3 borad I have to use drsosc 4.x or ealier to perform the calibration.
Stefan
Ritt wrote:
1) I tried to cablirate a V5 board with drsosc 5.0.3 and it just worked |
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Tue Apr 21 13:06:39 2015, Stefan Ritt, DRS4 Evaluation Board Baseline/Voltage Calibration
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Sure, for a V3 board you need a pre-V5 software, but I assumed Julien had a V5 board.
Daniel
Stricker-Shaver wrote:
I also use Ubuntu 14.04 LTS and for my V3 borad I have to |
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Thu Apr 10 14:45:12 2014, Roman Gredig, DRS4 Evalboard V5 with Windows7Pro64bit
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Dear Stefan
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Wed Apr 16 10:24:55 2014, Stefan Ritt, DRS4 Evalboard V5 with Windows7Pro64bit
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>
> Dear Stefan
>
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Tue Feb 27 16:34:26 2018, Steven Block, DRS4 Dead times 6x
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Hello All,
I am currently trying to figure out how to properly characterize the dead time of the DRS4 board. My most recent experiment to try and answer
this question involved using an external trigger that can range from 1Hz to 2MHz. I fed this trigger into the DRS4 and collected 1000 samples with no input |
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Tue Feb 27 17:04:12 2018, Stefan Ritt, DRS4 Dead times
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XML is very slow to write, and you are probably limited by that. Switch to binary mode, which is much faster. You will see in the end a maximum rate
of ~500 Hz, and thus a dead time of 2ms, independent of the sampling speed. Note that you have only an evaluation board, which is optimized for ease of
use. If you develop your own electronics, and do optimized readout, you can bring the deadtime down to 30ns x number of samples + 2us, or 32us if you read |
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Tue Feb 27 18:04:18 2018, Steven Block, DRS4 Dead times
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That is extremely helpful! Many thanks. One more question; If I were to take inputs from 2 channels at once, would that scale the dead time to 64us
using your example?
Steven |
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Tue Feb 27 18:12:32 2018, Stefan Ritt, DRS4 Dead times
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For applications which are critical on the dead time, one typically uses one ADC per DRS4 channel, and thus the dead time stays at 32us. If you multiplex
two DRS4 channels into one ADC channel, then it goes to 32us.
Stefan |
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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 |