3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
arrow. If the instrument is unable to find data that is N dB below the marker on
either side of the marker, the arrows are displayed at the indicator point of the
marker, no value (---) is displayed as the result and –100 Hz returned remotely (see
figure below):
Some sample N dB scenarios are shown below to illustrate how the function works
in various cases. In each case, the two-headed blue arrow represents N dB of
amplitude.
360 Spectrum Analyzer Mode User's &Programmer's Reference