Perhaps there's should be a "firmware" parameter in the USRP source/sink
blocks.
I want to avoid this if possible. If we only need to use this firmware
when decim < 8, then that can be done inside the grc usrp code But
if someone wants to disable the halfband filters and TX when decim >
Firas Abbas wrote:
> Hi,
>
> When working with 8 bit samples, you must disable FPGA halfband filter see
> (http://gnuradio.org/trac/wiki/UsrpFAQ/DDC).
>
> To do so, the USRP (via GRC) should load the "std_4rx_0tx.rbf" image.
>
>
> Best Regards,
>
> Firas
>
>
>
>
I have confirmed that using the
Josh Blum wrote:
> According to this:
> http://gnuradio.org/trac/browser/gnuradio/trunk/gr-usrp/apps/usrp_rx_cfile.cc#L87
>
>
> if you dont like half band filters or you want to decimate by 4,
> "std_4rx_0tx.rbf" is the firmware for you
>
> >
>
> so, it seems that the correct thing to do in
Hi,
When working with 8 bit samples, you must disable FPGA halfband filter see
(http://gnuradio.org/trac/wiki/UsrpFAQ/DDC).
To do so, the USRP (via GRC) should load the "std_4rx_0tx.rbf" image.
Best Regards,
Firas
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According to this:
http://gnuradio.org/trac/browser/gnuradio/trunk/gr-usrp/apps/usrp_rx_cfile.cc#L87
if you dont like half band filters or you want to decimate by 4,
"std_4rx_0tx.rbf" is the firmware for you
>
so, it seems that the correct thing to do in grc would be to set this
spec
Marcus D. Leech wrote:
> Josh Blum wrote:
>
>> svn up!
>>
>> let me know if something goes wrong
>>
>>
> Intersesting.
>
> When I use 8-bit samples with decim=8 or higher, things are peachy.
>
> But when I use decim=16 with 8-bits samples, I get a continuous stream
> of -423dB out of the FF
Josh Blum wrote:
> svn up!
>
> let me know if something goes wrong
>
Intersesting.
When I use 8-bit samples with decim=8 or higher, things are peachy.
But when I use decim=16 with 8-bits samples, I get a continuous stream
of -423dB out of the FFT Log Power sink.
I think what I'm getting is a pil
There are plans now...
Any example code would help
Marcus D. Leech wrote:
Josh, et al:
Do you have plans to support 8-bit sample settings in the GRC USRP objects?
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Josh, et al:
Do you have plans to support 8-bit sample settings in the GRC USRP objects?
--
Marcus Leech
Principal Investigator, Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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