[Discuss-gnuradio] Reading I & Q from a binary file

[paul munro]

Hi.
I have sampled a FM signal and saved it to a file using 'usrp_rx_cfile.py'. 
I have checked the file by demodulating it using 'wfm_rcv_file.py' and 
everything works fine. I am now trying to read the file using LabView. The 
tutorial by Dawei Shen says the data is 16 bit signed integers in I followed 
by Q format. What I read in LabView is: each I sample is zero, and Q values 
range from 0 to +-32000 (see figure).

Are these values reasonable?? Should the inphase sample be zero?? I doesn't 
seem right to me... Is it definitely I followed by Q, am I a word out??  I 
have tried with a few different files, but I get the same results.

Any help appreciated
Regards Paul

_________________________________________________________________
Discover fun and games at  @  http://xtramsn.co.nz/kids

screenshot.jpeg
Description: JPEG image