Using the UBX board on the x310 and the lo leakage is the same amplitude if not 
higher than the signal being played with rfnoc samples from file.


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Subject: USRP-users Digest, Vol 145, Issue 55

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Today's Topics:

   1. X310 calibration (Avila, Jose A)
   2. Re: X310 calibration (Marcus D. Leech)


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Message: 1
Date: Fri, 23 Sep 2022 17:36:37 +0000
From: "Avila, Jose A" <[email protected]>
Subject: [USRP-users] X310 calibration
To: "[email protected]" <[email protected]>
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I have noticeable lo leakage when running the cpp rfnoc replay samples from 
file. So I ran the calibration functions but it doesn't seem to be using the 
created files since I did not notice a difference. Is there a function call or 
setting in cpp I need to add? I thought it would be automatic. Using uhd 4.2 
with X310.
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Message: 2
Date: Fri, 23 Sep 2022 14:16:48 -0400
From: "Marcus D. Leech" <[email protected]>
Subject: [USRP-users] Re: X310 calibration
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=UTF-8; format=flowed

On 2022-09-23 13:36, Avila, Jose A wrote:
> I have noticeable lo leakage when running the cpp rfnoc replay samples
> from file. So I ran the calibration functions but it doesn't seem to
> be using the created files since I did not notice a difference. Is
> there a function call or setting in cpp I need to add? I thought it
> would be automatic. Using uhd 4.2 with X310.
>
Which daughtercards are you using?

I'll note that most of the DC-offset compensation is done in a
daughtercard-independent way and doesn't rely on the
   CAL functions as far as I know--there's a continuous "DC offset
removal" function in the FPGA.

When you say "noticeable" what is the magnitude we're talking about?



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