Re: [Discuss-gnuradio] Problem using the dbs card

[Krzysztof Kamieniecki]

Hi Frederic,

Where did you get dbs_fft.py from?

I was a bit confused with gnuradio-examples/python/usrp/dbs_debug.py, in that the sliders label RF 
and IF gain actually seem to be attenuators. To actually get some signal I had to slide them to the 
left.

Regards,
Krys

EVENNOU Frederic RD-TECH-GRE wrote:

> Hi everybody,
>
> I started using the gnuradio platform some few weeks ago, and I've been 
> trying to use the dbs_rx card. I made some few tests to practice myself 
> on the way to use this card, but unfortunately I didn't have any 
> successful result.
>
> I've been using a python program named dbs_fft.py to have a look at the 
> spectrum in a range of frequencies that I specify. I made some few tests 
> by emitting a sine wave at 1GHz (and then around this frequency), but 
> I've never been able to get it with the dbs card, whereas I can see it 
> very clearly on a spectrum analyzer (level == address@hidden). At emission, 
> and reception, I have some antennas working in that band and antennas 
> are separated by 50cm. On my display screen I just receive some noise so 
> I must receive some samples from the dbs_rx card.
>
> I made the same test at lower frequencies and using the TVRx card to 
> receive the signal, and it works pretty well.
> Did someone have the same problem with this card, and is there anything 
> special that can be done to check if my dbs_rx card works properly ?
>
> Thanks for your help
> Frederic
>
>
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Krzysztof Kamieniecki
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