- ![]() | Pressing any of these parameters opens the associated menu with a keypad that allows you to conveniently change the parameter value. These are the same settings found in the right side menus. REF LEVEL Sets the reference level of the top graticule line. If the reference level offset is not zero, OFFSET REF LEVEL is displayed at this location. SCALE/DIV Sets the graticule scale/division. REF LEVEL OFFSET Compensates for the presence of external input attenuation or gain. Refer to Setting Amplitude Parameters. FREQ OFFSET Accounts for frequency conversions outside of the analyzer. Refer to Setting Frequency Parameters. ATTEN LEVEL When auto attenuation is off, sets input attenuation. PRE AMP Toggles the low-noise front-end preamplifier on or off. Refer to Setting Amplitude Parameters. TRACES Displays the current status of up to six traces in a quick-view summary. The summary information includes the trace or cursor number, type, mode, and detector type. The active trace will show a highlighted background with the mode and detector type restated under the table. In Spectrogram, a reference trace (T0) will show you the settings of the trace used to fill the spectrogram. The reference trace settings are applied to all traces and cursors while in Spectrogram view. Pressing a trace or cursor in the summary panel activates the pressed trace or cursor and opens the TRACE menu. It allows you to select and set up an individual trace or cursor as desired. Refer to Setting Trace Parameters. SWEEP Toggles the current sweep setting between continuously or sweep once. Refer to Setting Sweep Parameters. FREQ REFERENCE Indicates the current frequency reference source of Internal High Accuracy (used after GNSS (GPS) has lost sync, but while the internal clock still has good GNSS (GPS) reference), Internal Standard Accuracy, External, or GNSS (GPS) Hi Accuracy (requires GNSS (GPS)). The instrument automatically selects the frequency reference in the following order of priority: external, GNSS (GPS), then the internal time base. |