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From: | George Nychis |
Subject: | Re: [Discuss-gnuradio] help with tuning RFX2400 MIMO_b, weird RX results |
Date: | Tue, 29 Apr 2008 14:47:16 -0400 |
User-agent: | Thunderbird 2.0.0.12 (X11/20080227) |
Hi Bob!Right, when I side "wide circle", i didn't mean flat, i meant that the circle seemed thick... as if there is a large variation in amplitude.
my newest graph seems a little better: http://cyprus.cmcl.cs.cmu.edu/tmp/flex_graphs/flex_rx2en.jpg Thanks, George Bob McGwier wrote:
George:The flattened ellipsoid is in the eye of the beholder. ;-). It isn't really. It is the aspect ratio of your gnuplot. You are clipped and it appears there is a slight DC bias on the I channel to plus DC (pushed slightly to the right).Bob George Nychis wrote:I'm getting a little closer... http://cyprus.cmcl.cs.cmu.edu/tmp/flex_graphs/closer.jpgit looks like I'm clipping a little bit, and is that "wide circle" effect a result of DC offset?- George Long, Jeffrey P. wrote:Kind of looks like it is clipping to me and possibly some DC offset problems. -Jeff -----Original Message----- From: address@hidden [mailto:address@hidden On Behalf Of George Nychis Sent: Tuesday, April 29, 2008 10:13 AM To: Eric Blossom Cc: address@hidden Subject: Re: [Discuss-gnuradio] help with tuning RFX2400 MIMO_b,weird RX resultsYou're not being shunned :) Stating the obvious, it would be great to have 1 complete implementation of the C++ daughterboard code, rather than N partial implementations.Hopefully once I get passed my May madness I can work with Michael on this.Does it look like I am clipping? I am not changing the transmitter between the two dumps. I figured the rx gain was too high but it seemsto be being set correctly. - George _______________________________________________ Discuss-gnuradio mailing list address@hidden http://lists.gnu.org/mailman/listinfo/discuss-gnuradio_______________________________________________ Discuss-gnuradio mailing list address@hidden http://lists.gnu.org/mailman/listinfo/discuss-gnuradio9999
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