Hi Peter,

Usually I sample signals by myself. Depending on the wave form and the
bandwidth you can use simple methods like interfacing the line to the
sound card on the computer, storing it as uncompressed wav and then
convert it to your like. Or build a sampler, so you can send the
digitalized sample over USB for example. Or use a commercial logic
analyzer / USB scope etc which are usually allows you to store the
input in a defined format.

Alternatively if you know the signal very well you can write a
stimulus file by hand, which is similar to VHDL.

Tamas


On Tue, Jan 5, 2010 at 1:10 AM, Peter <plpeter2006@yahoo.com> wrote:
> I sometimes have a need to use digitally sampled test signals, in simulat=
ions
> and otherwise. Obtaining f.ex. a 10 second 1kHz sine wave in ulaw format =
is not
> a problem. Not so with other not so simple waveforms, such as video signal
> (color bars or gray-scale) sampled at some reasonable parameters (like 4*=
fsc and
> 8 bits or similar). Has anyone got an idea where one could obtain such, s=
topping
> short of generating them from scratch? As usual, searching the net was not
> conductive to results.
>
> thanks,
>
> =A0Peter
>
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-- =

/* www.mcuhobby.com */ int main() { char *a,*s,*q; printf(s=3D"/*
www.mcuhobby.com */ int main() { char *a,*s,*q; printf(s=3D%s%s%s,
q=3D%s%s%s%s,s,q,q,a=3D%s%s%s%s,q,q,q,a,a,q); }",
q=3D"\"",s,q,q,a=3D"\\",q,q,q,a,a,q); }

-- =

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