Anritsu FAQs
What is the difference between an OSL calibration and FlexCal?
With the OSL calibration, you have to calibrate each time you change the frequency range. With the FlexCal, you can change the frequency range and you don't have to perform another calibration. FlexCal is great for troubleshooting purposes. The accuracy can be affected if your span is really narrow so for optimum accuracy, it is recommended to use the OSL calibration.
