Re: [Discuss-gnuradio] Values of gain differ with Python and C++

[Eric Blossom]

On Sun, Nov 05, 2006 at 01:42:30AM +0100, De Lima Julian wrote:
> Hello,
> 
> I have seen in the file usrp_basic.h that the minimum value of the gain
> is -20 and the maximum is 0. And in the user guide of the USRP, it is
> written that the PGA has a maximum gain of 20 dB.

Yes, this is true, for the PGA in the AD9862.


> But with Python when you call subdev.gain_range(), the minimum value is
> 0 and the maximum value is 90. Is it the same? With Python it is just a
> different representation?

There's additional gain available on the daughterboard.  We give you a
single knob that adjusts both values.

Eric