In R2015b, the AGC System object and block were improved to incorporate a simplified interface, tolerate a significantly larger input signal power range, and converge more quickly.

By default, LegacyMode is false, and this setting is recommended. However, you can set LegacyMode property to true to access the properties and behavior of the previous releases. These properties include DetectorMethod, LoopMethod, UpdatePeriod, StepSize, and GainOutputPort.