Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
N dB Points can be used to measure the bandwidth of a signal; it is commonly used
in conjunction with a tracking generator to measure filter bandwidths.
In one of the common use cases, the marker is placed on a peak, and the arrows are
displayed N dB down the skirt from the marker on either side of the peak. The N dB
value and the frequency difference between the two arrows is displayed around the
arrow as shown in the figure above. Normally this displays on the right arrow, but if
this would place any part of the text offscreen to the right then it displays on the left
Spectrum Analyzer Mode User's &Programmer's Reference 359

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)