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Re: [Discuss-gnuradio] ScopeSink Howto

From: Berndt Josef Wulf
Subject: Re: [Discuss-gnuradio] ScopeSink Howto
Date: Fri, 7 Jan 2005 02:30:19 +1030
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On Thursday 06 January 2005 22:52, Prateek Dayal wrote:
> Hi,
> I have been trying to use to scope sink and it is not working very
> predictably. I tried the demo program that is there and it worked
> fine. Then I tried generating say a 350 Hz sine wave with a sampling
> of 1 kHz, 3 Khz, 1 Mhz but it all resulted in a line. It seems to be
> working only for higher input frequecies. Is there some specific
> tuning that needs to be done for lower frequencies ???

Did you change the timebase of the scopesink to a value that accommodates your 
signal (e.g. 10 ms/div)? The sample applications opens the scope with a 
timebase of 50us/div which would display only a fraction of the 350Hz signal. 
Think of it like a real oscilloscope.

cheerio Berndt

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