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Re: [Discuss-gnuradio] Re: debug freezing

From: Josh Blum
Subject: Re: [Discuss-gnuradio] Re: debug freezing
Date: Fri, 17 Apr 2009 10:11:06 -0700
User-agent: Thunderbird (X11/20090318)

feldmaus wrote:
Josh Blum <josh <at> joshknows.com> writes:

peak detector can output 1 or 0. What is it outputting?

I get 1 and 0 when it is not freezed.
I uploaded a screenshot, but i am not sure whether this works,

There you can see that i get 1 at a peak otherwise 0. The blue wave
in the scope shows the peaks and the red wave is the signal
i am searching peaks for.

The signal is at 1020 kHz. Some frequencies results in a freezing
of my graphical elements.

Do you think that it might be possible for peak detector to output always the same number at "some frequencies"?

Replace the peak detector with a source of constant 0 or a source of constant 1, do the plots appear frozen?

It seems that if you give the graphical sinks a signal that never changes, the plotted waveforms will also not change.

Further, if your scope is triggering on channel 1 (the blue) and blue is constant, the scope cannot find a trigger point, and stop plotting new samples until a trigger point is found.


Regards Markus

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