There might be cases where a spectrum analyzer is used to measure a particular signal that is surrounded by many adjacent strong signals. Perhaps the signal measured isn't as strong as the adjacent signals and requires and increase in level but unfortunately the adjacent signals are raised as well.
Although none of the strong adjacent signals are overpowering of the analyzer, perhaps they are all somewhere around -30dBm but there are about 10 of them or more, is it possible that although the input levels look fine on screen when in reality the analyzer is actually seeing higher than -30dB at it's input thus staying below the input level limits might not always be so obvious.
Thoughts on this, thanks
