Re: Sweep Response Results After Completing All Calibrations
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I'm glad you are making progress. I still think your "compensated" output should be flatter and near 0 dBm.
In addition to the things you mentioned, I ran into a couple things getting the coefficients from Excel. One was that it defaulted to too few significant digits. Getting numbers like 0.02 won't cut if if the actual number is 0.015625 or whatever. But there is a way to tell it to give more digits. And also increase the font size so you can see the numbers! It's also easy to make errors transcribing the coefficients to your parameters file. I've done that a time or two as well.
I do think if the battery is steady at 8.5 V you should be OK on the output of the regulator.
Having your power meter circuit in the same box as the Arduino and DDS probably does raise your minimum signal floor. But if the effects are constant and repeatable across the range, they still shouldn't affect your frequency compensation, as I see it.
On Fri, Jan 23, 2015 at 7:10 PM, n1vc@... [PHSNA] <PHSNA@...> wrote: