Keysight N9923-90001 User’s Guide227System SettingsSystem Configuration— The external reference is off-frequency.For best results, the signal should be between –5 dBm and +5 dBm.Security LevelFor security reasons, you can prevent fr equency information from appearing onthe FieldFox while in NA, or CAT modes.How to set Security Level— Press System 7— Then System Configuration— Then Security Level— Then choose from the following:—None All frequency settings are visible.—High Frequency information is blanked from the following:——Display annotation——Softkeys——Marker display and marker table——Calibration properties——All settings tables——Limit line tables——All saved.png files—Any of the following will re-display frequency information:——Set to None, Preset, Mode Preset, or FieldFox restart.Date and Time, Format, and Time Zone SettingsSet the local date and time, Date and Time format, and Time Zone that isshown on the FieldFox screen. The Date and Time is also used to identify filesthat are saved.The Date and Time can also be set by synchronizing with GPS satellites. Learnmore in “GPS” on page 219.How to Update Date and Time using InternetThis method of setting the Date and Time does NOT have the securityrestrictions of the other methods (listed below).This method will NOT set the correct Time Zone. You must do that using themanual method. See below.
