Spectrum Analyzer Mode Key Descriptions
Spectrum Analyzer Mode Functions
V
changes the amplitude units to V for the current setting (log or linear).
selects the ratio between the video and resolution bandwidths. If signal responses near the noise level are visually masked by the noise, the ratio can be set to less than 1 to smooth this noise. The knob and steo kevs change the ratio in a 1, 3, 10 sequence. Pressing (PRESET)
and AUTO ALL sets the ratio to 0.300 X. The ratio can be changed using the step keys or the knob.
initiates a digital averaging routine that averages displayed signals and noise. This function does not affect the sweep time, bandwidth, or other analog characteristics of the analyzer. Annotation on the left side of the screen indicates the current number of sweeps averaged. The default number of sweeps is 100. Increasing the number of sweeps smooths the trace. To turn off the video averaging function, press VID AVG ON OFF so that OFF is underlined. The number of sweeps can be entered using the numeric keypad.