Getting 0, Nan while using usrp2_rx_cfile.py

Hello all,

I have faced another problem here. I am really in great trouble and want
this problem to be solved as early as possible.
I am using the usrp2_rx_cfile.py to get the raw IQ data in usrp2.
I am using the following command
sudo python usrp2_rx_cfile.py -f 800M -N 1000 -d 100 -s -v output.dat

After that, I converted the .dat file using octave command
(read_complex_binary).

However, the values I am getting are ambiguous.
I am getting lots of 0 (zeros) and lots of Nan (dont know what does it
mean
though)…I have no idea about it.

Here is the snapshot of what I get. I would really appreciate if
somebody
can give any idea about this. Thank you.

------snapshot-----------
(9.183409485952689e-41,0)
(NaN,NaN)
(NaN,NaN)
(NaN,NaN)
(NaN,NaN)
(NaN,9.183409485952689e-41)
(NaN,NaN)
(NaN,9.183409485952689e-41)
(NaN,NaN)
(NaN,NaN)
(9.183409485952689e-41,0)
(NaN,9.183409485952689e-41)
(9.183409485952689e-41,0)
(9.183409485952689e-41,9.183409485952689e-41)
(NaN,NaN)
(9.183409485952689e-41,0)
(NaN,NaN)
(0,9.183409485952689e-41)
(NaN,NaN)
(NaN,9.183409485952689e-41)
(NaN,NaN)
(NaN,9.183409485952689e-41)
(0,9.183269356106256e-41)
(9.183409485952689e-41,9.183409485952689e-41)
(9.183409485952689e-41,0)
(9.183409485952689e-41,0)
(9.183409485952689e-41,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)
(0,0)


View this message in context:
http://old.nabble.com/Getting-0%2C-Nan-while-using-usrp2_rx_cfile.py-tp32870494p32870494.html
Sent from the GnuRadio mailing list archive at Nabble.com.

From the GNURadio Wiki page on Octave:

Data captured directly from the USRP is stored as 32-bit complex, rather
than 64-bit complex (gr.sizeof_gr_complex). To read this data, first
use*
read_short_binary()* and then split it into a two dimensional vector:

d=read_short_binary(data);
c=split_vect(d,2);

This works for both Octave and Matlab.
The value ‘NaN’ indicates an arithmetic or read error. You can google
it
to find more.

http://gnuradio.org/redmine/projects/gnuradio/wiki/Octave

Cheers,
Ben

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