[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] USRP1+external VUHF Tuner and C++ Interface
From: |
Luca Pascale |
Subject: |
Re: [Discuss-gnuradio] USRP1+external VUHF Tuner and C++ Interface |
Date: |
Thu, 30 Jul 2009 08:08:18 -0700 (PDT) |
Hi Eric,
thanks for your reply.
Now seems work something more.
Next Two things I have to investigate are :
1) I have a tone in the middle of the spectrum regardlss of the input
signal. What should be ?
2)db->is_quadrature() return true. What does it exactly means ? (i set
urx->set_format(0x00000300)-default).
Thanks again,
Luca
Eric Blossom wrote:
>
> On Wed, Jul 29, 2009 at 02:31:12PM -0700, Luca Pascale wrote:
>>
>> Hi all,
>>
>> I am trying to use USRP1 with an external Tuner using the C++ USRP
>> interface
>> example founded on the wiki.
>> The Tuner have a 16 MHz BW centered at 21.4MHz IF.
>> I have connected it (passing through a passband filter centered @21.4M
>> and
>> 16M wide) to USRP using the BasicRX daughterboard. I have some doubt
>> about
>> this setup.
>>
>> A) Do I need to control in someway (by a "driver") the doughterboard?
>>
>> B) How should I have to set the DDC freq ( set_rx_freq() ) to get
>> correctly
>> the signals around the 21.4M IF ?
>>
>> Thanks in advance,
>
> usrp_tune_result r;
> bool ok = u->tune(0, db, 21.4e6, r);
>
> Eric
>
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>
--
View this message in context:
http://www.nabble.com/USRP1%2Bexternal-VUHF-Tuner-and-C%2B%2B-Interface-tp24726872p24740204.html
Sent from the GnuRadio mailing list archive at Nabble.com.