[Discuss-gnuradio] QT GUI (Constellation Sink) Update Period (Refresh Rate)

[David Halls]

Hi all,

I am using QT, finally, but I am struggling with the 'refresh rate' on the Constellation Sink.

My system receives one packet of 576 symbols (points), every second (slow!). I would like the plot to display all 576 each second, then wipe, and show the next 576 etc. There seems to be a lot of persistence and almost no update...

1) Line Alpha is to do with the transparency - not persistence?

2) Should I set 'Number of Points' to 576?

3) Update period, what is this in terms of, Hz or..., what should I set this to?

Sorry if this is all detailed somewhere but I can't find it easily in https://gnuradio.org/doc/doxygen/page_qtgui.html

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