John, simple rule.
Subtract the EXT GAIN value from the max rated input power and keep the tinySA measured power below that value
This works for both attenuators and amplifiers.
With ext gain of -30 dB your max rated power at the input of the external attenuator goes 30 dB up
With 20 dB external gain the max level at the input of the external amp goes 20 dB down
--
Designer of the tinySA
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