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Re: [Discuss-gnuradio] fftsink and scopesink refactored
From: |
Martin Dvh |
Subject: |
Re: [Discuss-gnuradio] fftsink and scopesink refactored |
Date: |
Tue, 22 Nov 2005 22:47:34 +0100 |
User-agent: |
Debian Thunderbird 1.0.2 (X11/20051002) |
Jonathan Jacky wrote:
>
> I tried the new fftsink and scopesink on Mac OS X 10.4.3 Tiger.
>
> Both of them work without modifications on a 1 GHZ Powerbook G4.
> Previous versions would not always work --- they would start up
> and display a blank window, with the twirling beachball icon that
> indicates the program is busy, apparently because wxPython on the Mac
> couldn't keep up with the data.
>
> Now scopesink just barely works on the 1 GHZ Powerbook. With the timebase
> at 100 us/div or more, the display frequently freezes and the beachball
> appears, and the only escape is to type ^C into the terminal
> window. At smaller values of us/div (fewer cycles on the display) the
> display updates and the controls are responsive.
>
> scopesink works well (no beachball) on a 1 GHz PowerMac G4 (dual
> processors) and on a 2.7 GHz PowerMac G5 (dual processors).
>
> Now fftsink works well even on the 1 GHz Powerbook.
>
> There is one oddity. When scopesink starts up, the vertical scale is at
> e+35 ! It takes about two minutes to autorange down to
> +/-1000 full scale. This behavior occurs on both faster and slower Macs.
I have the same problem on linux x86.
Although the problem is not allways there.
I suspect one of the buffers doesn't get initialized at 0.
It seems to also only happen for me when I use the usrp as source with an
actual signal.
(When I put the usrp in counting mode, the problem goes away and I get a nice
sawtooth signal)
Greetings,
Martin
>
> Jon Jacky
>
>
>
>
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