What about the gain setting? In grc, the gain setting defaults to 0 dB,
this is not the case for tx_samples, try adding -g 0 to the options.
-josh
On 03/31/2010 08:37 AM, Krishna S wrote:
Hi,
I have some issue with tx_samples.cc and the GRC.
when i send the file containing complex I&Q samples from GRC
Transmitter side : File Source --->USRP2_sink(interp=16, f=1.8G)
|-->FFT_sink(avg=yes)
Receiver side: usrp2_fftsink.py (decim=16,f=1.8G)
I get perfect frequency plot matching exactly as seen in the transmitter side.
But
when i use tx_samples.cc (interp=16, f=1.8G, -r) to transmit the same
file. I get the almost same frequency plot with lot of dissortion, I
have checked all the available parameters in the tx_samples.cc but in
vain.
I have also , python generated code top_block.py by the
GRC for the above function with the tx_samples.cc , both are sending
32bit floating complex values to usrp2_sink..., how come their results
are different....? even though keeping all the parameters same for both
of them...!
(Tim, i posting with a new subject)
Thank you
KRISHNA S
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