Measurement Basics: Frequency, Span, Amplitude - Keysight HSA N9342C Demonstration Manual

08 | Keysight | N9342C/N9343C/N9344C HSA Handheld Spectrum Analyzer - Demonstration Guide
Demonstration 2

Measurement basics: frequency, span, amplitude

The key measurement setup parameters of a spectrum analyzer are:
– Frequency
Adjust the frequency range measured
– Span
Adjust how closely you look at the signal
– Amplitude
Adjust the view of the signal's level
A typical spectrum analyzer measurement procedure contains the following three steps:
1. Tune the center frequency of the analyzer to the signal of interest.
2. Adjust the span to zoom in on the signal of interest.
3. Adjust the amplitude to give the optimum view of the signal.
In this demonstration, we will set signal generator to output a signal to N934xC HSA with
an RF cable and set these parameters.
Instructions for the source
Set 2 GHz center frequency, amplitude -10 dBm, CW signal
Instructions for HSA
Tune the center frequency to 2 GHz
Adjust span so signal fills the screen
Set reference level to
-10 dBm so that the signal peak is at the top of graticule line (Figure 2)
Figure 2. Adjust reference level
Keystrokes for the source
[Preset], [FREQ], [2], {GHz}, [AMPTD], [-10], {dBm}, [RF On]
Keystrokes for HSA
[Freq], [2], {GHz}
[Span], [10], {MHz}
[Amptd], {Ref Level}, [-10], {dBm}