The PRESET menu sets certain settings to the default state. Preset only affects the current analyzer settings, such as those for the spectrum analyzer or for the CAA/CAA_USB. Preset does not affect user files or system settings such as networking settings. For other reset options, such as a complete factory reset of the instrument, refer to “Reset settings” section in Instrument Overview chapter of user guide. To recover from system software faults, refer to Appendix A, “Instrument Messages and Troubleshooting” chapter of instrument user guide.