Hi Rob, > The float to complex provides two float input ports and one complex output > port. I believe the top float port is the "in-phase" and the bottom float > port is the "quadrature-phase" port.
if you hover above these ports you'll see that the upper is "re" (real) and the other is "im" (imaginary), which, typically, maps to I and Q. > I transferred the png file to windows but the > file name causes problems in windows. Um, I think renaming a file shouldn't be that hard :) make sure you attach .png; many file managers on Linux autodetect the content of a file, no matter what the extension is (or if it's missing), but Windows Explorer might be stuck in the 80s, feature-wise. Also, Unix filesystems typically support UTF-8, but if you e.g. use a FAT32-formatted USB drive, you might encounter problems... Best regards, Marcus On 06/30/2015 04:52 PM, numeric wrote: > Thank you Marcus. > I tried again to implement your suggestion. This time I had success! Thank > you! > However, I had to make changes. I set the constellation sink for 2 inputs > and added a second float to complex block. This provides a Y (or vertical) > scope input representing the waveform R + J*X. Where R is the "real" > component of the VNA reflection component and X is the "imaginary" component > of the reflection component. They are both plotted on the same axis. The > orthogonal scope axis is the driving VNA VCO waveform (used a sawtooth) and > is the same waveform for R and X reflection parts. > > The ambiguous part: > The float to complex provides two float input ports and one complex output > port. I believe the top float port is the "in-phase" and the bottom float > port is the "quadrature-phase" port. I need to document further what I did, > a picture, as they say, is worth a 1000 words. I have a screen shot of the > waveform and GRC flow diagram. I transferred the png file to windows but the > file name causes problems in windows. However, at this time I have another > project to complete first. > Thank you for your help, > Rob > > > > > Marcus Müller-3 wrote >> I don't know how you want to trigger your Oscilloscope in X/Y mode -- >> hence I used the "Free" trigger mode, to generate the lissajous figures >> I sent you. What's wrong about them? If you describe what you're >> expecting, we might find a solution together. > > > > > -- > View this message in context: > http://gnuradio.4.n7.nabble.com/QT-scope-block-tp54482p54524.html > Sent from the GnuRadio mailing list archive at Nabble.com. > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
