Tracking Generator - Keysight HSA N9342C Demonstration Manual

23 | Keysight | N9342C/N9343C/N9344C HSA Handheld Spectrum Analyzer - Demonstration Guide
Demonstration 13

Tracking generator

In many cases, stimulus response characteristic measurements are important. A
spectrum analyzer equipped with a tracking generator forms a stimulus response
measurement system that can easily perform scalar component test with high dynamic
range (due to the spectrum analyzer's tuned receiver architecture and narrow IF
bandwidths). The Keysight N924xC HSAs each have an optional high-performance,
built-in tracking generator (Option TG7) (frequency range from 5 MHz to 7 GHz). With
this option, the HSA performs stimulus response measurements.
In this demonstration, we'll measure the passband and rejection of a bandpass filter.
Instructions for HSA
Preset the HSA
Turn on the tracking generator and set its output amplitude to -10 dBm
Set start frequency and stop frequency
Note: Select frequencies appropriate for the device being tested
Note: Decrease the resolution bandwidths to increase dynamic range
To measure the test system's frequency response more accuracy, directly
connect the cable from the tracking generator output to the analyzer RF
input
The normalization function is used to eliminate the test system's frequen-
cy response error from the measurements. Store the frequency response
of the test system in trace 4 and make the Normalize On
Connect the DUT to the analyzer
Change the normalized reference position to optimize the view range
(Figure 25)
Measure the rejection of the filter 20 MHz above to the center frequency
DUT
Figure 25. Stimulus response measurements
Keystrokes for HSA
[Preset]
[Mode], {Track Generator}, {Amplitude, (On)}, [-10], {dBm}
[Freq], {Start Freq}, [852.5], {MHz}, [Stop Freq], [952.5], {MHz}
[Meas], {Normalize}, {Store Ref 1->4}, {Normalize (On)}
{Norm Ref Posn}, [9], {Enter}
[Marker], [902.5], {MHz}, {Mode}, {Delta}, [20], {MHz}