Tuesday, July 30, 2019

Re: [Discuss-gnuradio] turn off DC offset

Hey,

I've had a similar issue with a 3.7 version so maybe this helps.

For me, no other value than "True" (without "") would generate a call to
"set_auto_dc_offset()" in the GRC generated python script ("top_block.py").

So, in order to disable DC offset tracking, a quick workaround would be
to set "Enable DC Offset Corrections" to "True". This adds the desired
call to "set_auto_dc_offset()" to your "top_block.py". Now you only need
to manually change "True" to "False" in "top_block.py" and DC offset
tracking should be disabled. Remember to not regenerate the flow-graph
after making those changes as otherwise GRC will override your changes.

Alternatively, you can of course always simply add the line
self.uhd_usrp_source_0.set_auto_dc_offset(False, 0)
to your script without using GRC.

Hope this helps.
Cheers,
Julian


On 30.07.19 17:07, Simona Sibio wrote:
> Yes.
>
> gnuradio-config-info -v
> 3.7.13.4
>
> Best Regards,
>
> Simona
>
> Il giorno mar 30 lug 2019 alle ore 15:03 Michael Dickens
> <michael.dickens@ettus.com <mailto:michael.dickens@ettus.com>> ha scritto:
>
> __
> Can you execute "gnuradio-config-info -v" and report back what it
> returns?
>
> Can you execute some UHD-based application (whether GNU Radio or
> whatever), and report back the displayed debugging info?
>
> On Tue, Jul 30, 2019, at 9:56 AM, Simona Sibio wrote:
>> Of course, I am using Linux, the GNU radio version is 7.3.0 and
>> UHD version is UHD.3.13.1.
>>
>> And, I would like to measure the DC offset in the receiver.
>>
>> Thank you for your time.
>> Best Regards,
>>
>> Simona
>
>
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> Discuss-gnuradio mailing list
> Discuss-gnuradio@gnu.org
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>

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