Matt Ettus wrote:
Look at the samples in the scope sink. Do you see a pattern of A A B B C C D D...., meaning instead of unique samples, is every one repeated? If so, it means that the halfband decimator is probably not being bypassed properly.
Here are the first 100 8 bit samples from the USRP and the first 100 16 bit samples divided by 256. You'll notice that the 16 bit samples divided by 256 are larger than the 8 bit samples. Both are collecting ambient noise from my GPS antenna:
Here are the first 100 8 bit samples from the USRP: -2 0 0 0 2 -1 0 0 0 -2 0 0 0 1 0 0 -1 -3 0 0 2 2 0 0 0 0 0 0 -3 0 0 0 2 2 0 0 2 0 0 0 0 1 0 0 -3 0 0 0 -6 0 0 0 -4 2 0 0 1 1 0 0 0 0 0 0 -2 0 0 0 3 0 0 0 -1 -2 0 0 1 -3 0 0 0 -1 0 0 0 -1 0 0 1 3 0 0 1 5 0 0 0 0 0 0 Here are the first 100 16 bit samples divided by 256: -1 3 2 2 -3 -2 -3 1 -2 1 -1 -1 1 -2 2 3 -2 1 1 -4 0 -2 -2 -3 0 -4 0 -2 0 2 5 2 2 0 5 1 1 1 3 1 -2 -3 -3 -5 1 3 0 0 4 -1 3 3 1 -4 1 -2 -1 -2 1 -6 -3 -2 1 3 -4 -1 -5 -2 -2 3 0 -2 -1 -3 2 4 2 2 4 -2 1 4 -1 1 1 3 0 0 -2 -2 -3 -1 0 0 -3 2 -3 -3 -2 0 _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
