Field Master Pro™ MS2090A User Guide : Secure Data (Option 7) : Erase All User Files in Internal Memory
 
Erase All User Files in Internal Memory
Perform a Master Reset:
1. Turn the instrument on.
2. Access System menu > SETTINGS
3. Go to RESET > RESET ALL.
A warning message will be displayed to warn the user that all settings will be returned to factory default values and all user files will be deleted. This is a standard file deletion and does not involve overwriting existing information.
4. Press the OK to complete the master reset.
5. The instrument will reboot and the reset is complete.