 Wed May 13 10:27:43 2015, Chenfei Yang, transparent-mode voltage
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I'm using an AD9252, 0.9V common mode voltage is suggested and I already use 8 un-switchable level shifters. Just as you said, this common mode range
is recommended for optimum performance and the device can function over a wider range with reasonable performance. So I think I could
adjust O_OFS to a minor level during transparent output. |
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Wed May 13 12:52:22 2015, Chenfei Yang, transparent-mode voltage
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Yes. I use exactly the same scheme as you mentioned. I'll try your solution.
Stefan
Ritt wrote:
There might be a solution. How do you bias th input |
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Wed May 13 16:13:07 2015, Chenfei Yang, transparent-mode voltage
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If using a ROFS of 0.9V, the input would not between 1.05V~2.05V better non-linearity area. Is that appropriate?
Stefan
Ritt wrote:
There might be a solution. How do you bias th input |
 Mon Jul 20 09:25:38 2015, Chenfei Yang, Measure the time between different samples
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Hi,
I have a question using a data acquisition card base on DRS4 chip. How can I measure the time between several samples of one channel，with the
accuracy of like nanoseconds , for I am using the internal trigger. Is there any complete work about this problem？
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Fri Jun 27 11:23:19 2014, ChengMing Du, drsosc binary to cern ROOT file conversion
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Stefan Ritt wrote:
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Wed Nov 25 02:52:35 2015, Chris Thompson, PC software beyond Windows 7
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I am new to this forum. I have ordered a DRS4 evaluation board for doing experiments with very fast PET detectors. It has not arrived yet. The version
of the manual I downloaded today shows software installation instructions for Windows 7 and earlier versions. I intend to use it on a 64bit PC running
Windows 8.1. Will the Windows 7 driver work, or is there an updated version for Windows 8 or 10? |
Wed Nov 25 17:36:25 2015, Chris Thompson, PC software beyond Windows 7 
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I tried this suggestion of changing the startup settings to ingore driver license signing (as suggested in the post # 434), but when I tried to install
the software I got a error message which I captured from the screen and I have attached. Perhaps I have the wrong version, or, as suggested, the file I
downloaded from your site is incomplete? |
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Sat Dec 5 02:39:20 2015, Chris Thompson, PC software beyond Windows 7
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I tried restarting Windows 10 in a way the allowed me to use "advanced startup options" Option 7 suggested it was to restart without mandatory
driver signing. However, the error persists. Has anyone tested this latest version 5.0.4 on Windows 10? My hardware arrived today, and I am anxious to
test it.!!!! |
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Sat Dec 5 03:21:21 2015, Chris Thompson, PC software beyond Windows 7
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On a hunch, I tried downloading V 5.0.3 instead. This works, and I now have the oscilloscope mode displaying signals! (just to make sure, I re-tire version
5.0.4 and still get the same error. So, in summary V 5.0.3 seems to install successfully and work with Windows 10, but the newer V5.0.4 does not install...
I assmume that I am missing something though, as the newer version is 10 Mbytes bigger! |
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Thu Jan 14 21:49:37 2016, Chris Thompson, Triggering of DRS4 in the fastest sampling mode
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I am attempting to use the DRS4 to measure the timing resolution of a pair of SensL silicon photomultipliers (SiPM). In order to do this I need to trigger
the DRS4 only when there is a coincidence between the two input signals, and hopefully make histograms of the relative detection times of each detector.
There are two completely separate issues. (1) I think this may just be a labelling error. In the first image (OR_mode_selected) one can clearly |
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Thu Mar 31 20:48:00 2016, Chris Thompson, Trigger on the And of a positive and negative signal
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I needed a fast pulse inverter in order to feed signals from the recent SensL SiPMs into a conventional CFD which only accepted negative signals. I got
a very small ferite torridal transformer from Coilcraft and wired up to invert signals then inserted into in 50 ohm coax cable and it works fine. These
things cost only a few cents each! |
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Fri Apr 1 22:09:07 2016, Chris Thompson, Trigger on the And of a positive and negative signal
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The coilcraft part number is: JA4220-ALB. Iordered two of them and they were sent as free samples. You might want to buy some slightly bigger
ones. I found them so small it was very hard to solder the coax cable to the connectors. Since I got them, I managed to damage one as they are quite fragile!
In the confirmation email I got there was some contact info which may be useful for you: "For help, contact Victoria Berner |
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Sun Apr 3 22:10:19 2016, Chris Thompson, Trigger on the And of a positive and negative signal
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No there are no other components. I put a photo of the inverter with its cables SMA and one end, BNC at the other. You can see it is very small. I glued
the inverter to a piece of thin plywood, and fixed the cables to it before attempting to solder them to the pads on the ferite bead support
Abaz |
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Sun Oct 19 14:36:54 2014, Chris Tully, coverting the xml file format into binary
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Hi,
Is there a straightforward way to convert the xml file format into the binary format? I have some runs taken mistakenly with
xml. |
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Wed Mar 9 09:57:20 2016, Christian D, LabView
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Hi,
I would like to use the DRS4 board with LabView for fast readout.
Do you know anyone who has written a VI for that? |
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Fri Nov 4 17:41:03 2016, Christian Farina, Missing Header
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Hello everybody,
I am completely new to this, so please bear with me.
I am trying to install the applications on my laptop. I downloaded and untar-ed the drivers and applications for Linux as described in the evaluation |
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Wed Nov 9 17:19:48 2016, Christian Farina, Missing Header
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Thank you Stefan, that was just what I needed.
Also, I have another question, if I am allowed to ask on this forum. I am trying to study how the time calibration of the DRS is done. Can you
point me to the script in which this is done? |
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Thu Nov 10 20:54:45 2016, Christian Farina, Missing Header
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Hi Stefan,
I have already read the paper. I was just unsure where the calibration code was located. Thank you so much for all your help.
Christian |
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Thu Apr 13 16:42:21 2017, Christian Farina, Stand-alone Time Calibration for PSI Board
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Hello everybody,
I was trying to create a stand-alone program that would perform a time calibration on the board. My goal would be the following.
- acquire about 10k sinus waveforms |
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Thu Apr 13 16:54:32 2017, Christian Farina, Stand-alone Time Calibration for PSI Board
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Hi Stefan,
Thank you for your reply. I have read the paper already. I looked through the code and I understand that the LTC and GTC are performed by the
AnalyzeSlope and AnalyzePeriod functions, respectively, correct? It seems to me to be a complicated business to re-write that part from scratch, at least |