PIM Master™ Passive Intermodulation Analyzer with Site Master™ Cable & Antenna Analyzer (331) and 2-Port Options (703) User Guide : System Operation : System Menu : Reset Menu
 
Reset Menu
Key Sequence: Shift > System (8) > System Options > Reset
Reset Menu
Factory Defaults
Press this key to restore the instrument to the default settings for all measurement modes and system settings, including connectivity, language, and the display and audio settings. User calibrations are not affected by this operation (see Master Reset). The instrument will power cycle when the operation is complete. Press the Enter key to initiate the reset, or press Esc to abort.
Master Reset
Press this submenu key to restore the instrument to factory defaults as described above and to delete all user files from the instrument internal memory, including user calibrations. The instrument will power cycle when the operation is complete. Press Enter to initiate the reset, or press Esc to abort.
Update Firmware
Press this submenu key to update the instrument operating system using an external USB drive. Press Enter to begin the update, or press Esc to return to normal operation without updating. Refer to PIM Master Firmware Update for additional information.
Back
Press this submenu key to return to the System Options Menu.
Caution 
A Factory Defaults reset or Master Reset will require that you reload any custom language files via Line Sweep Tools.