I am also going to make usb scope, which is having 25MSPS rate and 2 channel
and 8bit resolution.
The cost will be approximately 50$
Which will be of very small size like that of a USB thumb drive and probes
like that of earphones.
Which could be plug in to PCs or PDAs.
But will it satisfy the requirements?? Of persons do electronic works???
How much need is out there in market??
if there is an Application which allows This USB probe interface with a
smart phone like I phone
how much helpful will be this project to others??


YOurs SaRIn....


On Wed, Mar 10, 2010 at 8:57 AM, Kari Laine <klaine8@gmail.com> wrote:

> Hi,
>
> I just thought I mention it here and seems right kind of people are
> reading - so I might get answers to my question.
>
> I am writing Linux-software for USB-scope, namely Velleman PCSGU250.
> http://www.velleman.eu/
> It has a function generator also.
> Velleman has been very helpful with information how to communicate
> with the scope and those documents are going to be available to
> anybody.
>
> Specs says it's bandwith is 12Mhz
> I don't know whether it can handle 12MHz at the same time from both
> channels.
>
> Here in Finland it is not very expensive. It is about 250 euros.
>
> My project status is about 25%. I try to get something out in 3-4
> weeks. This is my first stab at a large C++ program and I probably
> done all the errors a beginner can make - make that a double. User
> interface is based on QT, which is great - but big.
>
> Anyway could someone please explain to me how to compare scopes. I
> know it is big question but main points would be nice.
> Also good pointers to web-sites about good oscilloscope information
> appreciated.
>
> How the pretrigger capture of data can be done with PC-scopes? At
> least Velleman works so, that it captures data and then sends it over
> to PC via USB. I have understood there is a PIC which handles this
> FPGA->PIC->PC traffic. I have not been yet able to figure out whether
> there are blind points at the time communication to PC is taking place
> - anyone?
>
> I have newer played with a very expensive scope so therefore a stupid
> question. On those the capturing is happening all the time and the
> computer inside them is handling the data continuously - right? So on
> those pretrigger is easy, just a circular buffer...
>
> Why on earth Scope manufacturers use Windows in a scope and not Linux
> which is lot better - only my opinion.
>
> Which is the best PC-Scope available?
>
> Best Regards
> Kari
>
> --
> PIC - ARM - Microcontrollers - I2C - SPI
> Keypads - USB-RS232 - USB-I2C - Accessories
> http://www.byvac.com
> I am just a happy customer
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist