I will double check that with a noise source. Which methods in the API can be used for offset tuning?
Thanks. BW JS ________________________________________ From: USRP-users [[email protected]] on behalf of [email protected] [[email protected]] Sent: 10 June 2019 20:20 To: [email protected] Subject: Re: [USRP-users] Dip in frequency spectrum. On 06/10/2019 01:51 PM, J Subash via USRP-users wrote: > Hi, > > I am recording a 20MHz wide signal centred at 370MHz. > > Attached is an averaged frequency spectrum, and there is a 6dB dip at > the centre of the spectrum. Is there a obvious reason for this. I am > using the python API and a B200 for doing this. > > Is there any way to avoid this from happening? > > Thanks > > BW > > JS > How do you know that your signal doesn't have this dip? Use of a good flt noise source allows you to differentiate between the case of your signal, and the receiver. There is DC-offset removal in the signal chain, so if you aren't using offset tuning, you can see some amount of "over-correction" for the DC-offset, leading to a dip in the response, although it's usually fairly small. _______________________________________________ USRP-users mailing list [email protected] http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com _______________________________________________ USRP-users mailing list [email protected] http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
