Sapiens - How to enable the core probe?
Press the MENU button 13, turn knob 16 until “Settings” is displayed and confirm by pressing knob 16.

Select “Core probe Enable” and press knob 16 to confirm.

Turn knob 16 to select:

A - Core probe DISABLED
B - Core probe ENABLED.
Select function A or B by turning knob 16 and confirm by pressing knob 16.
The yellow box indicates which function has been selected.
The green box shows which function is enabled.