The available calibration types are Standard Cal and Flex Cal. Standard Cal applies to the currently set frequency range. Changing either the Start or Stop Frequency setting requires turning off User Cal, in which case the factory default 1-Port ReadyCal will apply to all measurement types except Transmission (Ext Sensor). You may subsequently re-calibrate the instrument as appropriate.

Flex Cal calibrates the instrument over the entire frequency range and interpolates data points if the frequency range is changed. This method saves time, as it does not require the user to re-calibrate the system for frequency changes. The trade-off is fewer data points and less accuracy, compared to Standard Cal.

Table: Summary of Calibration Types lists the main characteristics of the Standard and Flex calibration types. If you do not expect to change the frequency range often, Standard Cal is recommended for best accuracy.