| ID | Date | Author | Subject  | Text |  | 
| 116 | Fri Feb 25 10:13:51 2011 | Stefan Ritt | Announcement digital pulse processing workshop | Dear colleague, if you live not so far from Zurich,
 you might be interested in this workshop:
 |  | 
| 6 | Mon Apr 27 15:09:49 2009 | Stefan Ritt | Amplitude and Timing calibration for DRS4 Evaluation Board | This is a quick notification to all users of the current DRS4 evaluation board.
 As you all know, the DRS4 chip needs
 |    | 
| 584 | Sat Jan 28 14:11:58 2017 | Danny Petschke | AND trigger problems | Dear Stefan, 
 I have 2 identical pulses as a
 splittet signal with an amplitude of 300mV.
 |  | 
| 585 | Mon Jan 30 16:37:33 2017 | Stefan Ritt | AND trigger problems | In the evaluation board we use an ADCMP601 comparator, which has a setup and hold time
 of 4.6 ns. So a pulse which exceeds the threshold
 |  | 
| 616 | Thu Jun  8 14:26:23 2017 | Rebecca Schmitz | AND Trigger problems with 2-3 channels | Hello, 
 I work with the DRS4 Evaluation
 Board V5 and I have a problem with the software.
 |  | 
| 617 | Thu Jun  8 15:52:20 2017 | Stefan Ritt | AND Trigger problems with 2-3 channels | Can you post a screenshot where I can see the channel waveforms, the configuration
 and the trigger settings?
 |  | 
| 618 | Fri Jun  9 09:44:33 2017 | Rebecca Schmitz | AND Trigger problems with 2-3 channels | Hello, 
 It
 seems that a coincidence with two fixed channels
 |     | 
| 620 | Thu Jun 22 21:36:08 2017 | Stefan Ritt | AND Trigger problems with 2-3 channels | Hi, 
 from our screenshots I see the
 following:
 |  | 
| 364 | Thu Aug 21 11:03:36 2014 | Martin Petriska | 10GSps on DRS4 Evm with delay cables | Hi, I read its possible to use channels 2,4,6 to extend 200ns to 400ns (1024bins
 to 2048).
 |  | 
| 365 | Tue Aug 26 12:32:21 2014 | Stefan Ritt | 10GSps on DRS4 Evm with delay cables | 
 
 
 
 
 |  | 
| 697 | Thu May 17 13:29:34 2018 | Stefan Ritt | "Symmetric spikes" fixed | Good news for all DRS4 users. After many years, I finally understand where the "symmetric
 spikes" come from and how to fix them.
 |     | 
| 714 | Mon Sep  3 11:17:26 2018 | Martin Petriska | "Symmetric spikes" fixed | Hi, 
 Is it possible to fix it by FPGA
 changes?  I see readout cycle (proc_drs_reedout) in
 |  | 
| 715 | Tue Sep  4 13:04:30 2018 | Stefan Ritt | "Symmetric spikes" fixed | Yes it's possible, but I have to find time for that. The software of the evaluation
 board takes care of the spikes ("remove
 |  | 
| 716 | Thu Sep 13 18:09:13 2018 | Martin Petriska | "Symmetric spikes" fixed | Ok, so I made it ... and Yes it works :), 
 https://youtu.be/0noy4CoFoh8
 
 here is changed part in drs4_eval4_app.vhd
 |  | 
| 106 | Wed Jul 21 10:46:32 2010 | Jinhong Wang | ENOB of DRS | Hi, Stefan, I see in your ppt "Design and performance of 6 GSPS waveform digitizing
 chip DRS4" , you define DRS4 ENOB as
 |  | 
| 107 | Wed Jul 21 10:58:20 2010 | Stefan Ritt | ENOB of DRS | 
 
 
 
 
 |  | 
| 402 | Thu Apr  9 11:46:33 2015 | Felix Bachmair | DRSBoard::SetTriggerSource | Hi 
 I have a question about the function
 SetTriggerSource in the class DRSBoard (DRS.h/DRS.cpp)
 |  | 
| 405 | Tue Apr 21 12:01:45 2015 | Stefan Ritt | DRSBoard::SetTriggerSource | Your first assumption is correct, e.g. 
 source = 00000000'00000001
 = 0x0001 ==> CH1
 |  | 
| 257 | Sun May 26 13:08:52 2013 | tmiron alon |  | Hallo, I'm using DRS4 Evaluation Board Rev
 4.0 and I'm trying to  change the output
 |  | 
| 258 | Fri Jun  7 10:22:48 2013 | Stefan Ritt |  | 
 
 
 
 
 |  |