When plotting the same set of phase noise simulation results these two methods give different answers:

- Going through Analog Design Env ->  Results -> Direct Plot -> Main Form -> pnoise radio button -> phase noise - > Plot
Curve name turns out as "Phase Noise; dBc/Hz, Relative Harmonic = 1"

- Going through result browser -> schematic -> psf -> Run1 -> pnoise-pnoise -> out and taking dB20 of it.
Curve name turns out as "dB20(getData("out" ?result "pnoise-pnoise" ?resultsDir "/export/simulation/CELLNAME/spectre/schematic"))"

The two curves have the exact same shape, but they are offset by a few dB. The exact amount of offset changes from circuit to circuit [observed 0.7 to 5.5 dB] The simulation is only ran once, on the same station, so pointing to different data is not the problem. Can the two ways be implying different parameters? [e.g. something like one takes the full 20 pnoise sidebands into account, as desired, while the other doesn't, maybe??] I'm attaching a PDF of a sample case.

Thanks for bearing with the long post.

Thank you very much for your quick reply, Ken.