Specifically for the PSA: If the frequency bin width is larger than the RBW, could there be frequencies missing in the display? Is the PSA LO swept continuously or is it stepped?
If you are using the normal detector or peak detector, then you can have a narrower RBW than bin / bucket width and not miss any frequencies. However, if you use sample detector, then you can miss frequencies. Also, if you use average detector, then the measured power can read low.
If you are using the normal detector or peak detector, then you can have a narrower RBW than bin / bucket width and not miss any frequencies. However, if you use sample detector, then you can miss frequencies. Also, if you use average detector, then the measured power can read low.
I hope this helped -