RAlbert,
In sweep mode, ‘Power’ averaging will perform averaging in mW units and ‘Log’ averaging will average in dBm units.
In real-time, averaging is always performed in mW units.
There is a separate type of averaging when you select “Average” for your trace type, that will average the traces together in their final unit type, which is typically dBm.
Let me know if you have follow up questions,
Andrew
