[USRP-users] Output power of E310

mleech at ripnet.com mleech at ripnet.com
Tue Mar 15 11:30:04 EDT 2016


 

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/ [1] 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/ [2] Use the "dev" image Best regards, Claudio

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