What is "1-FA Test"

When I'm reading the paper about RF power amplifier, I don't know "1-FA Test".

What is "1-FA Test" ?

Thanx

1-FA means One Frequency Assignment.
There could be multiple FA. In such case, high output power is required for the amplifier in order to maintain linearity after the addition of FA. For example, if the system requires 10W per FA as the output power in order to support using 3 FAs, a Linear Power Amplifier with 30W output power should be integrated.