The AF ANalyzer subsystem measures the single tone audio signal. It corresponds to the Analyzer softkey in the main menu Audio Analyzer/Generator and the associated output fields.
Subsystem AFANalyzer - Measurement Control
Subsystem AFANalyzer...:CONTrol (Control)
Subsystem AFANalyzer...:FILTer (Filter)
Subsystem AFANalyzer... (Measured Values)