FindFreq component returns an incorrect value with low frequency input signals

Tech Note: TN0187
Product: RPvdsEx
Version: All
Date Added: 2005-06-08


If the input frequency to a FindFreq component is zero, FindFreq will return either an erroneous value or the last valid input frequency. For input signals with a frequency less than 0.1 Hz, the component takes longer to stabilize (~10 seconds).


When using low frequency inputs to FindFreq, do not use the output as an input to another circuit component if this transient behavior will affect the operation of the circuit. This component can always be used to troubleshoot circuits.