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In this case, the output pk-pk amplitude is 0.015ns giving a gain of -24.437dB. Although this would pass the G.8262 limits, it has clearly been affected by a transient when the frequency and amplitude have changed on the DUT input. The Paragon-X has a recovery time which is used to remove the effects of such transients but at 80Hz, this recovery time is set to 0s (see here for information about recovery times versus frequency).
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