> any decent loop should average the sawtooth You can't really, depending on their relative phases and the resulting aliasing products the average of the sawt

> any decent loop should average the sawtooth You can't really, depending on their relative phases and the resulting aliasing products the average of the sawtooth error can still have an arbitrary offset which last for an arbitrarily long time. > that they will not have that much effect okay fine for some definition of 'not much' that's true. But failing to account for it can result in a bigger error than many people expect-- and in an annoying way, since when you test it might be in a state where it is averaging out okay but then later shift into a state where it's producing an offset that doesn't average out. Assuming your receiver outputs the correction it's pretty easy to handle, so long as you know it's a thing.