Zero Frequency

Flex Apps:
FlexPLL
Response Measurements

The Zero Frequency measurement indicates a single frequency in the JTF model where gain decreases. Similar to this is the Pole Frequency measurement that locates a single frequency in the JTF model where gain increases. A Type 2 PLL by definition has only one pole.

JTF and OJFT for 3rd Order Type 2 PLLs
with Zero, Pole, and Gain Frequencies

SCPI Command

:MEASure:RESPonse:PLLModel:FZERo?

:MEASure:RMEMory:PLLModel:FZERo?