Question
The red UNCAL sign is on - what has to be done?
Red CAL Sign in the Display is on
Answer
Typical reasons for the missing calibration data are:
- The FSEx exhibits a fault. In this case, the calibration will stop and a message will be displayed.The instrument must be repaired by an R&S service center.
- A general reset (factory reset) has been performed. The calibration data is erased and the instrument needs to be recalibrated by pressing 'TOTAL CAL'.
- A firmware update causes a factory reset and all calibration data is lost. Recalibration with 'TOTAL CAL' is required