Fluke 9100 User Handbook Manual page 205

Note that although the x10 and 10 softkeys remain active, pressing them will always
result in the error message:
Frequency too big or Frequency too small
being displayed, as they would move the target frequency out of the permissible range.
You can now continue with the calibration as detailed in Section 10.3.4.3.-stage 2.
Final Width = 215mm
Section 10: Calibrating the Model 9100: Standard Calibration — Basic Sequences 10.3-15