| ID |
Date |
Author |
Subject |
Text |
 |
|
825
|
Fri Apr 9 21:38:59 2021 |
Stefan Ritt | Spikes/noise sensitive to clock settings? | elog:824
|
|
|
828
|
Wed May 5 10:12:44 2021 |
Stefan Ritt | recording only timestamp and amplitude and/or filesize maximum | The maximum file size depends on the underlying
linux file system. Common values are 4-16
GBytes. |
|
|
830
|
Mon Aug 9 12:50:31 2021 |
Stefan Ritt | C code to read the 4 channel with external trigger | Sorry the late reply, I was on vacation.
Here are some answers:
1. I'm sorry I can't help |
|
|
834
|
Sat Sep 18 15:47:50 2021 |
Stefan Ritt | how to acquire the stop channel with 2x4096 cascading | The problem must be on your side, since
the Write Shift Register readout works in
other applications with the DRS4 chip. So |
|
|
835
|
Sat Sep 18 15:48:30 2021 |
Stefan Ritt | drs_exam_multi with non-v4 boards, default configuration | Hi,
please note the the evaluation
board is what it says, a board to evaluate |
|
|
838
|
Thu Oct 14 15:25:07 2021 |
Stefan Ritt | livetime (or deadtime) of DRS4 evaluation board | The one thing you can do easily is to look
at the scaler values. If one channel counts
all physical events, and you have all read |
|
|
840
|
Thu Oct 14 18:42:31 2021 |
Stefan Ritt | livetime (or deadtime) of DRS4 evaluation board | I would say not exactly, but it's a
good approximation.
|
|
|
844
|
Tue Oct 26 12:00:51 2021 |
Stefan Ritt | External trigger and drs_exam | 1. Why should your waveform start from
0 to 5ns? I don't get your point. Whenever
you trigger a readout, you get a 200ns wide |
|
|
845
|
Tue Oct 26 12:02:56 2021 |
Stefan Ritt | Trigger multiple boards independently | Unfortunately an independent operation
from a single computer is not supported by
the software. You can try to modify the drs_exam |
|
|
848
|
Wed Oct 27 08:11:42 2021 |
Stefan Ritt | Trigger multiple boards independently | I'm not sure if the rate would go up
to 2 kHz (not 2 GHz!). Depends how the USB
hub is designed. What you can do however |
|
|
852
|
Tue Nov 16 08:51:14 2021 |
Stefan Ritt | V3 board, only one channel works, all components at each channel input working | A V3 boards is already 10 years old and
out of warranty. The software has no configuration
to turn channels off except the channel buttons |
|
|
855
|
Mon Jan 3 17:13:41 2022 |
Stefan Ritt | DRS4 request assistance | 1. fDOMINO is defined as fREFCLK * 2048
2. Good values can be derived from
the evaluation board schematics: C1=4.7nF, |
|
|
857
|
Sat Jan 15 10:50:47 2022 |
Stefan Ritt | I want to know about the readout |
student_riku |
|
|
859
|
Tue Jan 25 14:34:42 2022 |
Stefan Ritt | Regarding measuring for a set time | drsosc is a graphical application contiously
acquiring data from the board, and drscl
is a command line tool for debugging, as |
|
|
864
|
Tue Feb 15 12:02:29 2022 |
Stefan Ritt | Cannot trigger on pulses, have to trigger on undershoot | 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 |
|
|
868
|
Thu Mar 3 13:47:26 2022 |
Stefan Ritt | How to convert samples to volt? | The 'drscl' tool is more for experts,
normal users are advised to use the DRSOsc
oscilloscope. |
|
|
869
|
Thu Mar 3 16:14:16 2022 |
Stefan Ritt | Scaler issue to evaluate live time | The scalers are read out 10x per seconds,
so they have an accuracy of 10 Hz. I tried
a 50 Hz pulser, and measured 40 Hz, I tried |
|
|
872
|
Mon Mar 7 08:45:32 2022 |
Stefan Ritt | Why does not trigger at higher sampling frequencies? | Unfortunately I have not idea what the
problem could be. In principle the trigger
should be independent of the sampling speed, |
|
|
874
|
Mon Mar 7 16:37:54 2022 |
Stefan Ritt | Scaler issue to evaluate live time | I tried your measurement with the DRSOscilloscope
app (see below), and I measure a constant
difference of 10 Hz among the whole range |
|
|
878
|
Sat Mar 12 10:13:24 2022 |
Stefan Ritt | Time calibration and the C++ API | DRSBoard::GetTime is declared in DRS.h
line 720.
If you want to measure timing down |
|