Gated Fft Measurement - Keysight X Series Measurement Manual

Making Time-Gated Measurements

Gated FFT Measurement

Gated FFT Measurement
This procedure utilizes gated FFT to gate the FM signal. For concept and theory
information about gated FFT see
Step
1 Set the analyzer to the
Spectrum Analyzer mode.
2 Preset the analyzer
3 Set the center frequency,
span, reference level and
attenuation.
4 Set the Gate source to the
external trigger input on the
rear panel.
5 Set the gate method and turn
gate on.
6 Select the minimum
resolution bandwidth
required.
"How time gating works" on page
Action
• Press Mode, Spectrum
Analyzer.
• Press Mode Preset.
a. Press FREQ Channel,
Center Freq, 40, MHz.
b. Press SPAN X Scale,
Span, 500, kHz.
c. Press AMPTD Y Scale,
Ref Level, 10, dBm.
• Press Sweep/Control,
Gate, More, Gate
Source, External 1.
a. Press Sweep/Control,
Gate, Gate Method,
FFT.
b. Press Gate (On).
• Press BW, Res BW
(Auto).
108
Notes
This enables the spectrum analyzer
measurements.
See Figure 8-12.
199.