Thanks Justin. It actually moves, as I move around the center frequency.
Does this happen on BB60D only, or SP145 and SM family could also show similar behaviour?
EDIT:
I played a bit with span settings, and now I can see other spurs (depending on the span, and center freq)
It’s a bit concerning, because then from now on, every time I have to check if the spurs I see are artifacts of the spectrum analyzer itself, or exist in the signal.
I had never noticed this (maybe because I rarely work with frequencies this low).
Could it be something more likely to happen in the lower frequencies? According to BB60D’s diagram, this specific signal I tested, pass through a different signal path (<130MHZ) than what I usually use.
