ID |
Date |
Author |
Subject |
Text |
 |
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428
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Fri Jun 5 13:15:35 2015 |
Felix Bachmair | DRS4 firmware UCF constraints | Hi Stefan,
No we only use one evaluation board. We use
the evaluation board as a part of our beam |
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427
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Fri Jun 5 12:07:38 2015 |
Stefan Ritt | DRS4 firmware UCF constraints | I presume you have several evaluation boards
and want to run them in sync, right?
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426
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Wed Jun 3 09:07:38 2015 |
Stefan Ritt | Peculiar behavior of time values for Rev5 DRS4 EB | First of all, you should not use new boards
with old software. I try to keep the current
software compatible with old boards, but |
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425
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Tue May 26 11:27:27 2015 |
Felix Bachmair | DRS4 firmware UCF constraints | > > Hello, I'm using two DRS4 rev.5 boards
for 8ch readout and triggering.
> >
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424
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Sun May 24 09:34:27 2015 |
Peter Steinberg | Peculiar behavior of time values for Rev5 DRS4 EB | Hi -
I am setting up a new DRS4 rev5
but using drivers and software we were recently |
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423
|
Sat May 23 11:03:20 2015 |
Felix Bachmair | Issue with Trigger rates below ~100Hz | Hi
We are working with the DRS 4 V5
version and we investigated an issue with |
|
|
422
|
Fri May 22 14:25:45 2015 |
Stefan Ritt | DRS4 firmware UCF constraints | > Hello, I'm using two DRS4 rev.5 boards for
8ch readout and triggering.
>
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421
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Tue May 19 14:14:45 2015 |
Ilja Bekman | DRS4 firmware UCF constraints | Hello, I'm using two DRS4 rev.5 boards for
8ch readout and triggering.
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|
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420
|
Wed May 13 16:25:24 2015 |
Stefan Ritt | transparent-mode voltage | To get the good linearity, you need indeed
ROFS = 1.05V. With a O-OFS of 0.9V, a zero
input signal would give you DRS_OUT+=1.05V |
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419
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Wed May 13 16:13:07 2015 |
Chenfei Yang | transparent-mode voltage | If using a ROFS of 0.9V, the input would
not between 1.05V~2.05V better non-linearity
area. Is that appropriate? |
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418
|
Wed May 13 12:52:22 2015 |
Chenfei Yang | transparent-mode voltage | Yes. I use exactly the same scheme as you
mentioned. I'll try your solution.
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|
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417
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Wed May 13 12:34:49 2015 |
Stefan Ritt | transparent-mode voltage | There might be a solution. How do you bias
th input of the
DRS4 chip? If you use a scheme as described |
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416
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Wed May 13 10:27:43 2015 |
Chenfei Yang | transparent-mode voltage | I'm using an AD9252, 0.9V common mode
voltage is suggested and I already use 8
un-switchable level shifters. Just as you |
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|
415
|
Wed May 13 10:16:40 2015 |
Stefan Ritt | transparent-mode voltage | I see your point. Actually I will soon
have the same issue since we design right
now a board with an AD9637 using the transparent |
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414
|
Wed May 13 09:55:09 2015 |
Chenfei Yang | transparent-mode voltage | Here's the problem. My external ADC
has 2Vpp differtial input voltage range.
And the common-mode voltage of the inputs |
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413
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Wed May 13 09:45:51 2015 |
Stefan Ritt | transparent-mode voltage | The ROFS signal has no effect in the transparent
mode, so you have to adjust O_OFS between
sampling and transparent mode accordingly. |
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412
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Wed May 13 09:31:18 2015 |
Chenfei Yang | transparent-mode voltage | Hello Mr. Stefan Ritt
For DRS4 differential inputs
ranges form 500mV to 1100mV, with ROFS set |
|
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411
|
Wed May 13 08:19:53 2015 |
Stefan Ritt | Getting Trigger Source | DRSBoard::GetTriggerSource() simply returns
what has been enabled via DRSBoard::SetTriggerSource().
The actual source which causes the trigger |
|
|
410
|
Wed May 13 01:07:36 2015 |
Cosmin Deaconu | DRS4 Evaluation Board + Powered USB Hub | I am trying to use 4 evaluation boards
with a powered USB hub (since eventually,
I will have to do this on a laptop). |
|
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409
|
Wed May 13 00:52:51 2015 |
Cosmin Deaconu | Getting Trigger Source | I'd like to be able to know which channel
(0,1,2,3 or external) was responsible for
the trigger. DRSBoard::GetTriggerSource() |
|