Example Of One-Button-Measurement - Modulation Analysis - Keysight X Series Manual

Making WLAN Measurements
Making Modulation Analysis Measurements
— Burst Info & HT-Sig Info
— Preamble Freq Error vs. Time
— I/Q Impairment
The measurement provides following views for 802.11ac (20 MHz, 40 MHz, 80
MHz, 80+80MHz & 160 MHz):
— IQ Measured Polar Graph
— OFDM EVM
— Demod Bits
— Numeric Results
— Burst Info & HT-Sig Info
— Preamble Freq Error vs. Time
— I/Q Impairment
For more information on what these data are, see the N9077A & W9077A
WLAN Measurement Application User's and Programmer's Reference.
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Example of One-Button-Measurement - Modulation Analysis

This example assumes the signal is correctly applied to the input.
Step 1. Press Mode Preset
Step 2. Press Meas, Mod ulation Analysis
Step 3. View the measurement views. (See
The default measurement results should look like
802.11n example signal, the Polar Vector view graph shows the constellation
states for 64QAM. The data summary on the left side shows various error
measurement results, including RMS EVM, Peak EVM, Pilot EVM, Data EVM,
Freq Error, Symbol Clock Error and IQ Original Offset (CFL).
58
"Making Modulation Analysis Measurements" on page
Figure 2-23).
Figure 2-23. For the
Keysight WLAN Measurement Guide
55.