Veghihat, Hope this can help you
http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2012-October/005376.html
On Mon, Apr 29, 2013 at 8:24 AM, vegihat vegihat wrote:
> Well as you advice me, i set the --lo-offset=1M , for the following
> command
>
> uhd_rx_cfile -a serial=4759a751 -N
Well as you advice me, i set the --lo-offset=1M , for the following command
uhd_rx_cfile -a serial=4759a751 -N 10 -f 2.53G --samp-rate=2M
--lo-offset=1M noise.dat -v
However the peak is still there. I give below the output of
uhd_rx_cfile.py.
As you can see the Rx DDC frequency is
I remember that some DC is manually added into the frequency point which
can be divided by 5Mhz or 10Mhz? Besides the DC at the your central freq,
be aware of that if the lo offset setting makes your bandwidth cover these
frequency point, you still can see the peaks.
Hope I am not wrong, at least I
On 04/26/2013 02:27 PM, vegihat vegihat wrote:
if i have understand i need to use the --lo-offset of uhd_rx_cfile
i have gave various values to --lo-offset and only one value has
moved the DC offset (--lo-offset=1G) and the plotfft gives many small
spikes (maybe this is caused to aliasing, bu
if i have understand i need to use the --lo-offset of uhd_rx_cfile
i have gave various values to --lo-offset and only one value has moved the
DC offset (--lo-offset=1G) and the plotfft gives many small spikes (maybe
this is caused to aliasing, but i am not sure)
which is the rule (value of --lo-
On 04/26/2013 12:56 PM, Marcus D. Leech wrote:
On 04/26/2013 12:52 PM, vegihat vegihat wrote:
i use the following command to capture some samples of noise
uhd_rx_cfile -a serial=4759a751 -N 10 -f 2.48G --samp-rate=2M
noise.dat
then using matlab i read the samples
y=read_complex_binary (
On 04/26/2013 12:52 PM, vegihat vegihat wrote:
i use the following command to capture some samples of noise
uhd_rx_cfile -a serial=4759a751 -N 10 -f 2.48G --samp-rate=2M
noise.dat
then using matlab i read the samples
y=read_complex_binary ('noise.dat');
and i do plotfft
plotfft(y,20
i use the following command to capture some samples of noise
uhd_rx_cfile -a serial=4759a751 -N 10 -f 2.48G --samp-rate=2M noise.dat
then using matlab i read the samples
y=read_complex_binary ('noise.dat');
and i do plotfft
plotfft(y,200)
the plot shows a peak near the center. I don't
