On 06/10/2019 05:31 PM, Joeal Subash wrote:
I will double check that with a noise source. Which methods in the API can be
used for offset tuning?
Thanks.
BW
JS
https://files.ettus.com/manual/page_general.html
________________________________________
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.
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