Measuring A Source Frequency Drift - Keysight X Series Measurement Manual

Tracking Drifting Signals

Measuring a Source Frequency Drift

Measuring a Source Frequency Drift
The analyzer can measure the short- and long-term stability of a source. The
maximum amplitude level and the frequency drift of an input signal trace can be
displayed and held by using the maximum-hold function. You can also use the
maximum hold function if you want to determine how much of the frequency
spectrum a signal occupies.
This procedure using signal tracking to keep the drifting signal in the center of the
display. The drifting is captured by the analyzer using maximum hold.
Step
1 Set up the signal sources.
2 Instrument setup.
3 Set the analyzer to the
Spectrum Analyzer mode.
4 Preset the analyzer
5 Set the analyzer center
frequency, span and
reference level.
6 Place a marker on the peak
of the signal.
Action
a. Set the frequency of the
signal source to 300 MHz.
b. Set the source amplitude to
−20 dBm
• Connect the source RF
OUTPUT to the analyzer RF
INPUT as shown.
• Press Mode, Spectrum
Analyzer.
• Press Mode Preset.
a. Press FREQ Channel,
Center Freq, 300, MHz.
b. .Press SPAN X Scale,
Span, 10, MHz.
c. Press AMPTD Y Scale, Ref
Level, 10, −dBm.
• Press Peak Search.
58
Notes
This enables the spectrum analyzer
measurements.