[USRP-users] Output power of E310

Marcus Müller marcus.mueller at ettus.com
Tue Mar 15 12:30:04 EDT 2016


The point still is that to change the boundaries at which a different
filter is used, you'd have to modify UHD's e300_impl.cpp around lines
1160ff. UHD currently doesn't expose an API to do so.


On 03/15/2016 04:30 PM, Marcus D. Leech via USRP-users wrote:
>
> Ah, found it.
>
> There's an update_bandsel() method in e300_impl.cpp
>
>  
>
>  
>
>  
>
> On 2016-03-15 11:23, Marcus D. Leech via USRP-users wrote:
>
>> Claudio:
>>
>> I'm hunting through the code to see where it selects the filters
>> based on frequency.  All of this code was recently re-factored, and I
>> have a query in to R&D to figure this out.
>>
>> There doesn't appear to be a top-level "set_filter()" although such
>> is used internally in the drivers, which select the appropriate
>> filters automatically.
>>
>>  
>>
>>  
>>
>> On 2016-03-15 07:15, Claudio Cicconetti wrote:
>>
>>     Dear Marcus, all,
>>     I have upgraded to latest (Rev4) image, the results are basically the
>>     same: output power varies significantly and non-monotonically with
>>     center frequency.
>>
>>     Is there any (simple) way to change the configuration of filters?
>>
>>     Finding a "good" configuration for a given frequency with trial&error
>>     would be acceptable for us, since the center frequency is fixed and
>>     known in advance.
>>
>>     Btw, I tried to generate the image from source following the
>>     instructions in the manual, but the compilation fails ('unknown type
>>     name' errors when compiling volk).
>>
>>     Best regards,
>>     Claudio
>>
>>     On 03/14/2016 02:25 PM, Marcus D. Leech via USRP-users wrote:
>>
>>         On 03/14/2016 04:04 AM, Claudio Cicconetti via USRP-users wrote:
>>
>>             2. getting a pre-built image from
>>             http://files.ettus.com/e3xx_images/ If the option 2. is
>>             the correct one, can you please provide a pointer to the
>>             correct image to copy to the SD?
>>
>>         I'd use the latest Rev4 image:
>>         http://files.ettus.com/e3xx_images/e3xx-release-4/ettus-e3xx-sg1/
>>         Use the "dev" image
>>
>>             Best regards, Claudio
>>
>>
>> _______________________________________________
>> USRP-users mailing list
>> USRP-users at lists.ettus.com <mailto:USRP-users at lists.ettus.com>
>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
>
> _______________________________________________
> USRP-users mailing list
> USRP-users at lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/attachments/20160315/25c1cf86/attachment-0002.html>


More information about the USRP-users mailing list