 Wed Mar 3 17:36:31 2010, Hao Huan, Initialization of the Domino Circuit
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Hi Stefan,
I read in the datasheet that every time after power up the Domino wave in DRS4 needs to be started and stopped once to initialize
the Domino circuit. However in your firmware it seems the chip immediately goes into the idle state after reset. Is that Domino circuit initialization |
 Wed Mar 3 17:49:30 2010, Stefan Ritt, Initialization of the Domino Circuit
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Hao Huan wrote:
Hi Stefan, |
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Tue Jul 19 02:35:04 2022, Jingyu Zhang, Increase event rate, use ROI mode, and install sw from source in Mac
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Dear experts,
We are trying to increase the event rate of the DRS4. We looked into the ROI
but couldn’t figure out how to run in ROI mode. We are wondering if there is pre-existing firmware for this? We also tried to download and build |
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Fri Jul 29 14:09:35 2022, Stefan Ritt, Increase event rate, use ROI mode, and install sw from source in Mac
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The firmware from the website always reads 1024 bins. You have to modify it to stop before that, like reading only 128 samples or so. For compiling under
MacOSX, this should work, since I do it myself.
Regards, |
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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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Sat Jan 15 09:13:42 2022, student_riku, I want to know about the readout
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Hello, everyone.
I'm a student in Japan.
Please forgive me if this is a very rudimentary question. |
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Sat Jan 15 10:50:47 2022, Stefan Ritt, I want to know about the readout
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student_riku
wrote:
Am I right in thinking that inputting 1 to DMODE (Bit0) in the configuration
register will connect the 1024th cell to the 1st cell? |
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Wed Jan 26 06:44:11 2022, student_riku, I want to know about the readout
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Dear Stefan
Thanks a lot.
I solved it. |
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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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Wed Mar 2 17:25:10 2022, Matias Senger, How to convert samples to volt?
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I am using the `drscl` app. My prior experience is practically zero, sorry if this is a very naive question. When I read using `read 0 1` (channel 0,
with calibration) I get this:
``` |
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Thu Mar 3 13:47:26 2022, Stefan Ritt, How to convert samples to volt?
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The 'drscl' tool is more for experts, normal users are advised to use the DRSOsc oscilloscope.
The board has to be calibrated for a given sampling speed before calibrated data can be read out. Do that with the "calib" command,
specifying 5 for the sampling rate, 0 for the range (which is the middle between -0.5 and +0.5) and 1 for 1024 mode. If you then do "start", |
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Thu Mar 14 03:43:49 2019, Deepak Samuel, How to buy DRS evaluation kit
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Dear Stefan,
I have emailed drs4@psi.ch a couple of times regarding the pricing of the evaluation kits for academic use in India and have not received any
reply and hence writing in this forum. Could you please help me in this? |
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Wed May 26 19:18:09 2010, Hao Huan, High Frequency Input for DRS
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Hi Stefan,
I read in the DRS datasheet that the bandwidth for the transparent mode OUT+ is only 200MHz which I think cannot be improved
by any active input buffer; so if you want to operate the chip for really high frequency input, would it be better to feed on-board discriminators not |
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Tue Jun 1 13:36:18 2010, Stefan Ritt, High Frequency Input for DRS
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Hao Huan wrote:
Hi Stefan, |
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Wed Feb 10 02:57:55 2010, pepe sanchez lopez, Hello
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hello i am an student and i want to do my final project with drs4 board and i really can´t find how to open waveform file and how can i save or
opened many of them quickly.
if you can tell me how i will be very grateful. |
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Wed Feb 10 15:35:09 2010, Stefan Ritt, Hello
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pepe sanchez lopez wrote:
hello i am an student and i want to do my final project with drs4 board and i really can´t find |
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Thu May 8 23:41:03 2025, Jonathan Bradshaw, Handling of Write Shift Register and Write Config Register
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Hi all
We're building a product which will use two different operating modes; firstly a long capcture using channel daisy chaining (2048 samples)
and secondly a segmented capture (2 separate captures of 1024 samples each). |
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Fri May 9 08:17:50 2025, Stefan Ritt, Handling of Write Shift Register and Write Config Register
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This is correct. Setting A0-A3 to 0b1101 multiplexes the Shift Write Register to SROUT, so you will either a "0" or a "1" depending
on which of the two channels was written last.
Your segmented capture does unfortunately not work. Due to a bug in the silicon, the first (e.g. even) written channel gets half overwritten |
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Tue May 13 04:10:30 2025, Jonathan Bradshaw, Handling of Write Shift Register and Write Config Register
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Hi Stefan
Just so I'm 100% clear; is there no reliable way to perform 2 segmented captures with a single DRS4 IC?
While not a showstopper, this is a bit disappointing. |