I'll toss a stupid question out there because I honestly don't understand this thread (but very interested in it for the same reason)...
From my understanding, the harmonic test simply avoids sweeping all the stuff between the harmonics allowing a narrow RBW setting to cover all the harmonics in a reasonable amount of time instead of sweeping the whole way, but how small of a harmonic are we looking for?
I get it, with mine in normal SA mode and set to 1Hz, I can see pretty small signals (IIRC down to -165dBm or so), and that's great for looking at a homebrew duplexer, but from a device harmonics perspective, acceptable harmonics are usually -50 to -100dBc, so is it really necessary to see a harmonic that is sitting down at -160dBm? I wouldn't consider an SVA1032x the go-to tool for repairing something sophisticated enough to need to see a harmonic down in the natural weeds, so whats the point here? Is 30Hz not enough?
And if its not enough, go to normal SA mode, set it to 1Hz, and sweep each harmonic manually.