Keysight x-series Measurement Guide

100
Making Time-Gated Measurements
Gated LO Measurement
Gated LO Measurement
This procedure utilizes gated LO to gate the FM signal. For concept and theory
information about gated LO see “How time gating works” on page 199.
Step Action Notes
1 Set the analyzer to the
Spectrum Analyzer
mode.
• Press Mode, Spectrum
Analyzer.
This enables the spectrum analyzer
measurements.
2 Preset the analyzer. • Press Mode Preset.
3 Set the center frequency,
span, reference level and
attenuation.
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.
4 Set the gate source to the
rear external trigger
input.
• .Press Sweep/Control,
Gate, More, Gate
Source, External 1.
5 Set the gate delay, gate
length, gate sweep time,
and gate trigger.
a. Press Sweep/Control,
Gate, Gate Delay, 2,
ms.
b. Press Gate Length, 1,
ms.
c. Press Gate View Sweep
Time, 5, ms.
d. Press More1 of 2,
Control (Edge).
6 Access the analyzer gate
view display.
• Press Sweep/Control,
Gate, Gate View (On).
Use this function to confirm the gate “on”
time during the RF burst interval
(alternatively you could also use the
oscilloscope to view the gate settings).

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)