Re: [Discuss-gnuradio] tx_sampless.cc not working fine...????

[Josh Blum]

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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