On 10/26/2020 09:16 AM, Jon Beniston wrote:
Hi Marcus,
I think this may be a problem in UHD's
d9361_device_t::_tx_quadrature_cal_routine()
This calculates a variable max_cal_freq, that's the maximum frequency used
by the calibration. It then checks this against bbbw (the baseband
bandwidth), bu
Hi Marcus,
>The documentation probably needs to be updated, but also the examples.
>The examples are necessarily fairly generic, and they often reflect the
"thinking"
>at the time the example was created--with whatever hardware existed at the
time the
>example was created.
Ok, thanks.
I've j
On 10/23/2020 03:56 PM, Jon Beniston wrote:
universe where set_bandwidth does nothing.
Ok, thanks. Should the examples not be like that then too? Are there better
examples to use a reference, because I can't see anything in the docs.
Thanks,
Jon
The documentation probably needs to be updated,
Hi Marcus,
>There is likely some "setup" stuff done to the AD9361 chip during stream
creation,
> because the chip needs to know about the stream parameters
> it would not surprise me to find that there's some filter-setting done
during stream creation.
> Calls like set_bandwidth, set_gain, set_fre
On 10/23/2020 03:29 PM, Jon Beniston wrote:
Hi Marcus,
It seems to make a difference if set_tx_bandwidth is called before or
after get_tx_stream.
In the example programs, they all seem to do it before, however, it
appears to work better afterwards. Please see the attached two
programmes, which
Hi Marcus,
>> It seems to make a difference if set_tx_bandwidth is called before or
>> after get_tx_stream.
>>
>> In the example programs, they all seem to do it before, however, it
>> appears to work better afterwards. Please see the attached two
>> programmes, which are basically just your tx
On 10/23/2020 02:27 PM, Jon Beniston wrote:
It seems to make a difference if set_tx_bandwidth is called before or after
get_tx_stream.
In the example programs, they all seem to do it before, however, it appears
to work better afterwards. Please see the attached two programmes, which are
basical
Hi Marcus,
>Everything at that level is determined entirely by the AD9361 RFFE
chip--although
>there may be some settings that make things better.
It seems to make a difference if set_tx_bandwidth is called before or after
get_tx_stream.
In the example programs, they all seem to do it before, h
On 10/23/2020 12:41 PM, Jon Beniston via USRP-users wrote:
Hi,
Would anyone please be able to explain the interaction between
set_tx_bandwidth and LO/carriage leakage for the B210?
It seems that the device meets the spec of -50dBc if tx_bandwidth is set to
a value greater than 10MHz or lower t
Hi,
Would anyone please be able to explain the interaction between
set_tx_bandwidth and LO/carriage leakage for the B210?
It seems that the device meets the spec of -50dBc if tx_bandwidth is set to
a value greater than 10MHz or lower than 1MHz. However, at settings of
around 2 - 6MHz, with max
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