Pole Frequency
Flex Apps:
FlexPLL
The Pole Frequency measurement locates a single frequency in the JTF model where gain increases. Similar to this is the Zero Frequency measurement that locates a single frequency in the JTF model where gain decreases. A Type 2 PLL by definition has only one pole.
with Zero, Pole, and Gain Frequencies

SCPI Command
:MEASure:RESPonse:PLLModel:FPOLe?
:MEASure:RMEMory:PLLModel:FPOLe?