Capture 10 sec with 25 MSamples/s (4 - 8 Bits)... how to do ?

Hans-Bernhard Broeker wrote:
> rickman <spamgoeshere4@yahoo.com> wrote:
>> Hans-Bernhard Broeker wrote:
>>> rickman <spamgoeshere4@yahoo.com> wrote:
>>>> to a RAID drive.  This was pretty good for 10 years ago in a
>>>> standard PC running Windows2K.
>
>>> You've thus admitted to secretly owning a time machine.  Or how
>>> else would you have had access to Win2K 10 years ago?
>

Maybe he is a dog ;-)
A dog year is much shorter...


-- 
Best Regards,
Ulf Samuelsson
ulf@a-t-m-e-l.com
This message is intended to be my own personal view and it
may or may not be shared by my employer Atmel Nordic AB

Ulf Samuelsson wrote:
> Martin Maurer wrote:
> > Hello,
> >
> > i am in the need to capture around 10 seconds (ok, 5 to 8 seconds
> > would also be enough) with 25 MSamples / s. Each sample should be 4
> > to 8 digital lines. It would be nice if i can use an external clock.
> >
> > But how to do this ? The amount of data for 10s * 25 MSamples / s * 1
> > Byte = 250 MByte. So it is not a small amount !?!
> >
> > So at the moment i have 3 ideas to solve this:
> >
>
> The question is if you want to build a one off, or if you are going to do
> multiple chips.
>
> If it is a one off, then you may be able to adopt the Gigatrace function
> of a Green Hills or Lauterbach Probe.
> They have 1 GB of DRAM.
> It will cost you, but maybe developing something will cost as well.
>
>       Spartan-3 Memory Interface Board (HW-S3-SL361) is a Xilinx Development
> Board @ $995.
> containing 64 MB DDR SDRAM and it looks like you can add another 128 MB.

Alternatively, you can use the $150 Xilinx starter kit with
1M SRAM buffer.  You can fill several parallel flash chips
or modules from the buffer.
Newer compact flash can sustain 5 to 10MB/s.
3 to 5 parallel units should be enough for you.

You don't even need to build a PCB,  One of our customer
just wire-wrap some .1" connectors from the starter kit
to standard IDE cables.  That way, they can test multiple
CFs at the same time.  Those multi-G CFs takes a long time to test.

>
> --
> Best Regards,
> Ulf Samuelsson
> ulf@a-t-m-e-l.com
> This message is intended to be my own personal view and it
> may or may not be shared by my employer Atmel Nordic AB

Ulf Samuelsson <ulf@a-t-m-e-l.com> wrote:
> Hans-Bernhard Broeker wrote:
> > rickman <spamgoeshere4@yahoo.com> wrote:
> >> Hans-Bernhard Broeker wrote:
> >>> rickman <spamgoeshere4@yahoo.com> wrote:
> >>>> to a RAID drive.  This was pretty good for 10 years ago in a
> >>>> standard PC running Windows2K.
> >
> >>> You've thus admitted to secretly owning a time machine.  Or how
> >>> else would you have had access to Win2K 10 years ago?

> Maybe he is a dog ;-)
> A dog year is much shorter...

Unlikely, because of contradiction to the well-known fact that "On
USENET, nobody knows you're a dog."  So, if Rickman were a dog, and we
knew that, then he could not be on USENET.  His postings are evidence
to the contrary.  So he can't be a dog. ;->

[Any possible resemblance between this argument and the famous
disproof of God's existence by example of the Bablefish is most
definitely not a coincidence.]

-- 
Hans-Bernhard Broeker (broeker@physik.rwth-aachen.de)
Even if all the snow were burnt, ashes would remain.

Hans-Bernhard Broeker wrote:
> Ulf Samuelsson <ulf@a-t-m-e-l.com> wrote:
> > Hans-Bernhard Broeker wrote:
> > > rickman <spamgoeshere4@yahoo.com> wrote:
> > >> Hans-Bernhard Broeker wrote:
> > >>> rickman <spamgoeshere4@yahoo.com> wrote:
> > >>>> to a RAID drive.  This was pretty good for 10 years ago in a
> > >>>> standard PC running Windows2K.
> > >
> > >>> You've thus admitted to secretly owning a time machine.  Or how
> > >>> else would you have had access to Win2K 10 years ago?
>
> > Maybe he is a dog ;-)
> > A dog year is much shorter...
>
> Unlikely, because of contradiction to the well-known fact that "On
> USENET, nobody knows you're a dog."  So, if Rickman were a dog, and we
> knew that, then he could not be on USENET.  His postings are evidence
> to the contrary.  So he can't be a dog. ;->
>
> [Any possible resemblance between this argument and the famous
> disproof of God's existence by example of the Bablefish is most
> definitely not a coincidence.]

Woof!