Hello Dave,

The zero channel jumps to a different place every time I run the bof, but when running is stable.
I am not using and external sync pulse.

On simulations the pulse period looks ok, but I don't know if is synchronized with the data. Actually, I don't know how to check this. For example: if I use for simulation a band limited white noise; how can I know when the first channel is going out of the pfb or fft? I guess with a big DC offset I could "mark" channel 0, but anyway I wouldn't know how this should look at the pfb output...

Cheers,

r


On 26-11-2012 14:04, David MacMahon wrote:
Hi, Ricardo,

On Nov 23, 2012, at 8:55 AM, Ricardo Finger wrote:

The zero channel jumps around every time I run the bof (It can be anywhere).
Is the zero channel different but stable each separate time you run the bof or 
does it jump around while the design is running?

On simulations the pulse looks ok for both cases.
What are you using for the external sync pulse?  Are you sure that the design 
is syncing up to it at startup?  What happens if you run the design without the 
external sync pulse?

Just some ideas,
Dave


--
Ricardo Finger Camus
Ingeniero Eléctrico
Departamento de AstronomĂ­a
Universidad de Chile
Of: 56(2)9771150
Casilla 36-D, Santiago.
www.das.uchile.cl/lab_mwl/


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