Oscope Triggering and Sampling

I searched the list and perused some source code, but could not find
to the following, so…

  1. Is there a way to do a ‘one-time’ trigger with the oscilloscope? I
    having the ability to capture data and examine it.

  2. I can’t seem to capture more than a very small window of samples,
    even as
    I increase the time per division in the GUI. Is there a way to capture,
    say, 4,000,000 samples then stop?

  3. The trigger button in usrp_oscope.py only has 50%…can’t seem to
    find a
    way to set it to a fixed value…I feel like I’m missing something
    incredibly obvious here. Can someone clear this up?

Application: usrp_oscope.py -n 3
gnu-radio version 3.1.3 (built from tarball)
Ubuntu 9.04 x86

Thanks in advance,

I would install gnuradio trunk or 3.2 release candidate and enable the
gl sinks: http://gnuradio.org/trac/wiki/CompGrWxgui#GLSinks

The gl scope has much better time scaling and triggering capabilities.


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