Dear Mr. Askar,
you can get the detailed names of the available gain elements of every device
by calling
auto gain_names = my_multi_usrp->get_rx_gain_names();
and then do something fun like:
for(const auto& gain_name : gain_names) {
auto gain = my_multi_usrp->get_rx_gain(gain_name);
std::cout << gain_name << ": " << gain << " dB(arbitrary)\n";
}
Setting the gains works just the same,
my_multi_usrp->set_rx_gain(gain_element_name, value).
However, 99.5% of times¹ you *don't* want to set the gain to any element in
isolation; UHD
was coded to choose the most sensible combination of gains distributed across
the settable
gain elements.
There's a relatively new API for *Gain Profiles*: With a call to
my_multi_usrp->get_rx_gain_profile_names() you get a list of available gain
profiles (I
must admit I don't know which ones are supported on CBX-120; you might only get
an empty
list meaning there's but one default profile); you can set them with the
eponymous setter
method.
May I ask what the intention behind wanting to set that individual gain instead
of simply
setting the overall RX gain is? Maybe we can advise to your advantage based on
that.
Best regards,
Marcus Müller
¹ Note that 87.56% of such numbers are totally made up
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On 15.02.21 17:48, Askar, Ramez via USRP-users wrote:
>
> Dear Sir or Madam,
>
>
>
> We are using the X310 with CBX-120 daughter cards. How can we get and set
> the digital
> RX gain (ads62p48 gain) from C++ application?
>
>
>
>
>
> Best regards / Mit freundlichen Grüßen
>
> --
> Askar, Ramez, M.Sc.
> Research Associate / Project Manager / Delegate
>
> Wireless Communications and Networks
> Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, HHI
> Einsteinufer 37, 10587 Berlin, Germany
> +49 (0)30 31002-628
> [email protected] <mailto:[email protected]>
> www.hhi.fraunhofer.de <http://www.hhi.fraunhofer.de/>
>
>
>
>
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