[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] DBSRX: Tune the LO from python
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] DBSRX: Tune the LO from python |
Date: |
Fri, 16 Mar 2007 13:35:40 -0700 |
User-agent: |
Mutt/1.5.9i |
On Fri, Mar 16, 2007 at 01:17:27AM -0700, Chris Stankevitz wrote:
> Is it possible to set the DBSRX's LO frequency and the FPGA DDC
> independently?
Yes it is.
> Currently you can set the single quantity (LO - DCC)
> using the USRP's "tune" member function.
>
> When f = 1.57542GHz, I do not like GNURadio's choice of
> LO = 1.5755 GHz
> DDC = 80KHz
>
> The board seems to put out a signal at 1.5760 GHz when the LO is tuned
> to 1.5755 GHz which is not present when the LO is tuned to slightly
> higher freqs. I would like to tune the LO to the higher freq and use a
> larger DDC.
>
> Thanks,
> Chris
You have all the source available to you.
The source to "tune" is in gr-usrp/src/usrp.py
gr-usrp/src/db_dbs_rx.py may also be relevant.
Eric