Subject: Re: [Discuss-gnuradio] Understanding the interfence environment
Date: mer 06 set 06 07:56:52 -0400
Quoting Marcus Leech ([EMAIL PROTECTED]):
> Roberto Mastrodonato wrote:
> >Hi
> >
> >how can you set frequency and gain?
> >10x
> >R
> The DBS_RX tunes from around 900Mhz to around 2200Mhz, and also has
> variable-gain amplifiers, as does
> the AD9862 A/D chip. There are usrp functions to control this, which
> I use in my radio astronomy application.
The actual code for setting frequency and gain (for daughterboard
dbs_rx) is found (in python!) in file
<source code of gnuradio>/gr-usrp/src/db_dbs_rx.py
(methods set_freq and set_gain). The procedure is quite abstruse and I
found no text document that would explain in a less terse format what
was done and why. I re-coded the process in C for a library to be
called from Ruby, but I have no certainty that the logic is
correct. If you want I can send you the code, but it has possibly less
documentation that the original python code (which is, I admit, quite
an achievement), and since I could not understand exactly what the
procedure was performing, I have no way to ascertain that my code is
correct.
Carlo
--
* Se la Strada e la sua Virtu' non fossero state messe da parte,
* K * Carlo E. Prelz - [EMAIL PROTECTED] che bisogno ci sarebbe
* di parlare tanto di amore e di rettitudine? (Chuang-Tzu)
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