Yes, you can measure any amplifier. (Converters also)
Check the output power of the power amp with a 50
ohm load on the input to be sure you won't damage the NF
meter. Measuring the power amp with no input should
work. The exception to this would be class C amplifiers
which won't turn on without a strong enough signal at
If the gain is high or just to protect
the NF meter you can add an attenuator after the
amplifier. On the 8970, use 34.4 Special Function,
"Enter loss after DUT" to compensate for the attenuator.
Joe thanks for the reply and sorry for the
delay. If I'm trying to calculate the kTB power in dBm
then do I need to place a filter on either the input or
the output of the PA to simulate the operating BW? I'm
only operating in a narrow bandwidth compared to its total
operating frequency range.