| ID |
Date |
Author |
Subject |
Text |
 |
|
568
|
Thu Nov 24 08:13:23 2016 |
Stefan Ritt | PLL did not lock | Which serial number has the board? Has
it been in use before or is it a new board?
Stefan |
|
|
569
|
Thu Nov 24 13:24:26 2016 |
Stefan Ritt | Potential Incorrect Timing Calibration for DRS4 Data | The code in the macro is correct. The misconception
lies in the definition what "sample
0" means. Please view the attached picture. |
|
|
571
|
Mon Nov 28 16:52:38 2016 |
Stefan Ritt | PLL did not lock | Have you tried to unplug and re-plug the
board a few times? According to our database,
you should have three boards. Do all three |
|
|
574
|
Wed Nov 30 08:53:58 2016 |
Stefan Ritt | Potential Incorrect Timing Calibration for DRS4 Data | The inverter chain in the DRS4 is continously
running in a ring. Once you get a trigger,
it is stopped. This happens in any of the |
|
|
575
|
Wed Nov 30 10:45:29 2016 |
Stefan Ritt | Long timing between two channels | You cannot measure times longer than 1024/sampling
rate.
Stefan |
|
|
577
|
Wed Nov 30 19:05:24 2016 |
Stefan Ritt | DRS4 Initiation | Uhh, there are 1000 things which might
be wrong. A bit like "my car is not
working, it makes strange noise". Without |
|
|
579
|
Fri Dec 2 16:47:37 2016 |
Stefan Ritt | DRS4 Initiation | No, I can't think of anything else.
There is no intermediate addressing stage.
The only thing which sometimes happens is |
|
|
582
|
Fri Jan 13 13:16:09 2017 |
Stefan Ritt | DRS software doesn't work under Windows XP SP3 | The error probably comes from the fact
that the drsosc.exe application is a 64-bit
application and cannot be executed under |
|
|
583
|
Fri Jan 13 13:50:10 2017 |
Stefan Ritt | DRS software doesn't work under Windows XP SP3 | Can you try that executable under XP: https://www.dropbox.com/s/j1n09afhbmh0zzu/drsosc.exe?dl=0
|
|
|
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 |
|
|
587
|
Tue Jan 31 08:40:04 2017 |
Stefan Ritt | LLD and ULD discriminations, | Not inside the board. Each channel has
a single discriminator. You can select to
trigger on a rising or falling edge, but |
|
|
589
|
Fri Feb 24 18:35:38 2017 |
Stefan Ritt | Passing parameters to drscl | This is indeed currently not implemented.
But there is a simple C program drs_exam.cpp,
which connects to a board and safes some |
|
|
591
|
Wed Apr 5 12:28:28 2017 |
Stefan Ritt | drscl doesn't find eval board but drsosc does (Windows 7) | Two people report now this problem, while
this works fine at our lab. So I'm puzzled
right now. |
|
|
594
|
Mon Apr 10 10:48:03 2017 |
Stefan Ritt | DRS4 eval board v4 coincidence firmware changes for triger for short pulses | You have to download the package for your
board, which then includes also the correct
firmware for your board. If you have a V4 |
|
|
595
|
Mon Apr 10 10:50:57 2017 |
Stefan Ritt | drs4 registers behaviour | Using the RESET line to reset registers
is not a good idea since it can have some
bad side-effects. The READ SHIFT register |
|
|
597
|
Mon Apr 10 14:05:17 2017 |
Stefan Ritt | drs4 registers behaviour | 1. WRITE SHIFT register and CONFIG registers
are initialized to "1" on power
up, but if you want to change that, use A0-A3 |
|
|
599
|
Tue Apr 11 09:41:44 2017 |
Stefan Ritt | drs4 registers behaviour | What I do is the following: Have the RESET
input unconnected. When you power up, this
makes an internal reset during the power |
|
|
601
|
Thu Apr 13 16:50:18 2017 |
Stefan Ritt | Stand-alone Time Calibration for PSI Board | Hard to say. Timing calibration is quite
delicate. If you start from scratch, better
read this paper: https://arxiv.org/abs/1405.4975 |
|
|
603
|
Thu Apr 13 17:02:01 2017 |
Stefan Ritt | Stand-alone Time Calibration for PSI Board | Than you can try to isolate the code. Note
that different SCAs might work differently.
Like the DRS4 has a channel-to-channel jitter |
|
|
606
|
Wed Apr 19 12:17:25 2017 |
Stefan Ritt | Wave rotation during transfer from the board? | This is correct. Actually the amplitude
array is rotated already inside the DRS4
chip. So the readout starts with the stop |
|