[hpsdr] Level calculation error in Two Tone Test generation routine
Warren C. Pratt
warren at wpratt.com
Wed Nov 23 20:10:06 PST 2016
Hi John,
Thanks for pointing out those controls. Other than for the Penelope
board, those settings figure into the control of DAC current. They
don't change I-Q.
73,
Warren NR0V
On 11/23/2016 7:40 PM, John Marvin wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Perhaps this is a bit pedantic, but the "PA Gain" tab under "PA
> Settings" provides a drive level correction factor on a per band basis
> (at least that is my understanding). This is to help compensate for #3
> below, i.e. the varying frequency dependent gain characteristics of
> the various analog amplifier stages.
>
> This is probably not a significant factor in the discussion, but it
> might help explain any variances seen if someone was actually looking
> at the digital I/Q levels at the protocol level.
>
> 73,
>
> John
> AC0ZG
>
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