When I used eye diagram block (which seems to be a member of WxGUI
the following error appeared:
File “/usr/local/lib/python2.7/dist-packages/baz/eye.py”, line 98, in
self.st = gr.message_sink(gr.sizeof_float, msgq, dont_block=1)
AttributeError: ‘module’ object has no attribute ‘message_sink’
what is the main problem?
which GNU Radio version are you using?
GNU Radio itself (to my knowledge) doesn’t come with a dedicated eye
diagram, and it’s possible that you’re trying to use an out-of-tree
module that was meant for another version of GNU Radio.
You can try to emulate an eye diagram by using the Scope Sink, and
triggering on a signal that has an edge on every symbol center.
I’m using GNURadio 188.8.131.52. Under [Graphical Sinks], I have “Baudline
, “Fast AutoCorrelation Sink” and also “Eye diagram”. It doesn’t work!
I didn’t get your hint of creating an eye diagram
On Tue, Feb 17, 2015 at 9:39 PM, Marcus M. [email protected]
Department of Electrical Engineering
Amirkabir University Of Technology
Tel: +98 (919) 158-7730
yep, these are not GNU Radio core visualizations, but come with gr-baz.
You might be using a GNU Radio 3.6-compatible version of gr-baz instead
of one that works with GR 3.7. Make sure to install the master branch of
GitHub - balint256/gr-baz: Collection of new blocks for GNU Radio , after removing all remnants of the gr-baz
version that you have.
My hint regarding the eye diagram was just to build an eye diagram like
it’s in the books : An oscilloscope that is triggered on the symbol
Eye pattern - Wikipedia
I’ll add one thing to Marcus’ recommendation: turn on persistence in the
scope widget. Then you’ve got a great eye-diagram!
On Thu, Feb 19, 2015 at 4:33 AM, Marcus Müller
You can turn persistence on!? I use qt widgets, I don’t see that option
the Time Sink. Is this a WX only option?
Sorry, that is a WX-only option for now. Sigh.
On Thu, Feb 19, 2015 at 3:40 PM, Richard B. [email protected]