Chapter 8. Maintenance and TroubleshootingModel PM880 Portable Hygrometer User’s Manual 1398.6 Resetting to Factory Default Settings (cont.)5. Press [F3] (OK) to restore the factory default settings.6. The program asks for confirmation: “Are you SURE?” Press [F3] (Yes).The PM880 replaces the default site file and the global meter settings withthe factory default settings. When the meter returns to taking measurements,it displays data using the default site.8.7 Viewing or Changing Security SettingsTo guard against accidental or intentional tampering, the PM880 includes apassword-based security system. The system has three security levels.Individual passcodes protect the three security levels; they consist of one toeight digits. The three levels are as follows:• User Level - allows access to the display and non-critical metersettings (such as resetting the clock).• Operator Level - allows access to most of the meter settings used toset up the meter such as probe selection and calibration data. Thislevel also allows you to delete files such as old logs and unneededsite files.• Service Level - provides access to all meter settings, and is availableto GE representatives and authorized service agents only.The backup battery maintains the file system, so that if the battery fails orthe drive is erased, the passcodes will revert to the default values. For boththe User and Operator level, the default code is 2719.Use the sections that follow to set up security levels and enter newpasscodes.• Setting the Security Passcodes - see the next page• Setting Remote Access Security - page 141
