Quasi-peak was fun, so now let's have fun with the Average detector/s, each and 
all of them !

For reference, EN 302 208-1, Sec. 8.3, 8.4, 8.5.
Detection mode: Averaging


Which averaging would this be?  On the SA that I'm using,
There is video averaging by reducing the VBW to something a lot smaller than 
RBW.
There is EMI average detector, and

There is average detector which has two modes, power and video. 
(one is the log of the average of power, the other is the average of the log of 
power.)
And there is a multiple sweep averaging of the above.
And there is adjusting the sweep time while averaging is turned on.
And adjusting the span to be measured has an effect on the average measurement.

Each can give a different result.

So starting with the always correct answer in EMC, "it depends,"  what are 
these dependencies?

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