 Thu Nov 14 11:39:06 2013, Schablo, Cascading of channels
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Hello, I want use cascading of channels for 2048 cell - SetChannelConfig(0,8,4), but i can't understand how . Please, help me. Where i can
dowload 2048_mode.ppt. (I found information about this file in DRS.cpp (3445 line "/ combine |
 Thu Nov 14 12:51:56 2013, Stefan Ritt, Cascading of channels 
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Schablo wrote:
Hello, I want use cascading of channels for 2048 cell - SetChannelConfig(0,8,4), but i can't understand how . Please, help me. |
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Thu Nov 21 14:35:57 2013, Schablo, Cascading of channels
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Stefan Ritt wrote:
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Thu Nov 21 14:45:56 2013, Stefan Ritt, Cascading of channels
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Schablo wrote:
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Sat Feb 12 13:06:56 2022, Matias Senger, Cannot trigger on pulses, have to trigger on undershoot
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I am using the DRS4 board trying to measure pulses produced by an LGAD. I have no prior experience with this board, have just installed the `drsosc`
application and am exploring. I am experiencing some strange trigger behavior. Consider the following screenshot:
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Tue Feb 15 12:02:29 2022, Stefan Ritt, Cannot trigger on pulses, have to trigger on undershoot
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The trigger comparator is a ADCMP601 unit which requires a minimum pulse width of 3-4 ns. I see that your pulses are only 1-2 ns wide. You have to make
your pulses wider in order to trigger on them.
Stefan |
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Thu May 29 04:22:43 2014, Toshihiro Nonaka, CalibrationWaveform
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I'm writing the drs_exam.cpp to use multi-boards(v3, firmware:4.0.0), and taking data succeeded. But I have several questions about function written
in DRS.cpp.
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Thu Jun 12 17:16:13 2014, Stefan Ritt, CalibrationWaveform
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Toshihiro Nonaka wrote:
I'm writing the drs_exam.cpp to use multi-boards(v3, firmware:4.0.0), and taking data succeeded. But |
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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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Wed Jul 14 14:55:09 2021, Mehrpad Monajem, C code to read the 4 channel with external trigger
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Hi there,
Recently I bought a 5GSPS evaluation board with 2048 sampling points.
I want to read 4 inputs of the evaluation bord ar 5 GSPS or 2.5GSP and use an external trigger. |
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Mon Aug 9 12:50:31 2021, Stefan Ritt, C code to read the 4 channel with external trigger
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Sorry the late reply, I was on vacation.
Here are some answers:
1. I'm sorry I can't help much here, since I currently don't have a Windows 10 computer here to compile any code. I moved now completely |
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Tue Aug 10 13:57:09 2021, Mehrpad Monajem, C code to read the 4 channel with external trigger
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Thank you for the reply.
In the version that I have, I cannot find drs_exam_2048.cpp file. Could you please send me the link to download the software folder, which contain
this file. |
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Thu Nov 10 04:41:24 2016, Abhishek Rajput, Break Statements in DRS4 Binary to ROOT Macro
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Hello,
I recently modified the binary to ROOT convertor written by Stefan (https://midas.psi.ch/elogs/DRS4+Forum/361) so it can decode data taken
with any channel or set of channels on the DRS4. In the process of testing this modifed version for data taken on all 4 channels, I encountered problems |
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Thu Nov 10 09:56:04 2016, Stefan Ritt, Break Statements in DRS4 Binary to ROOT Macro
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Hi,
fread() returns the number of bytes read and zero (I believe) if there is an end of file. So this break statement is a simple end-of-file test.
There might be other erros such as hard disk failures, but these are extremely rare. |
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Thu Nov 10 19:24:52 2016, Abhishek Rajput, Break Statements in DRS4 Binary to ROOT Macro
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Hello,
I am wondering why the code should be changed to i < sizeof(eh), since doesn't fread(&eh,sizeof(eh),1,f) return 1 in this scenario?
I've confirmed with a cout statement that this is the case, so this break condition will therefore always trigger as sizeof(eh) is 32 bytes. |
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Thu Nov 10 22:07:40 2016, Stefan Ritt, Break Statements in DRS4 Binary to ROOT Macro
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You're right, fread() return the number of objects read, so indeed it should be one if successful.
Abhishek
Rajput wrote:
Hello, |
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Wed Apr 27 20:04:12 2016, Abaz Kryemadhi, Best settings for time measurements
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I am studing some pulses that are about 200-300 ns wide and a rise time of few ns, which settings would be best for coincidence time
measurements?
In some preliminary work I found for 700 MegaS the time measurement is better without time calibration (in -0.05 to 1V) rather than with time |
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Thu Apr 28 15:46:34 2016, Stefan Ritt, Best settings for time measurements
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The DRS4 chip has been designed to work best at high sampling speeds. At 700 MSPS, the chip is at it's limit and timing is very poorr (ns?). In order
to get good timing, run it at least at 2 GSPS.
Stefan |
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Fri Apr 9 17:14:45 2010, Hao Huan, Baseline Variation In Data
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Hi Stefan,
when I sample a constant input with the DRS 4 chip, there was a baseline variation showing up as a saw-tooth pattern which grows
with the absolute value of the differential input. Do you think this is the kind of baseline variation mentioned in the evaluation board manual, i.e. coming |