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Re: [Discuss-gnuradio] USRP1 gain

From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] USRP1 gain
Date: Wed, 09 Oct 2013 11:22:14 -0400
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On 10/09/2013 11:20 AM, Nemanja Savic wrote:
Thank you Marcus, I think I can say that i learned something today.
Just for clarification: USRP or UHD knows the gain of all components in the rx chain of wbx. If i specify for example 12 db of gain, and the gain of the chain without attenuator is for example 25 db, it will try to set attenuation to 13 db. For values greater than 25 db, it will adjust pga on USRP main board.


UHD knows the gain control range of each element. It distributes gain settings accordingly.

Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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