In case anyone's curious, this is what the initial power-on looks like the very first time a DOT050V variant is powered up:

The PLL manages to dial things in *roughly* in an hour or so. The little raggedy bits after that, I believe, are the TCXO knocking the crystal around a bit to calibrate it's response. In my experience so far they go away after a day or so.

Subsequent power-ups will start from the last DAC value that resulted in a 0 count error, so they won't take as long to dial in, unless conditions are markedly different.