Viewing Modulation Analysis Measurement Results - Keysight X Series Manual

Making WLAN Measurements
Making Modulation Analysis Measurements
To make Modulation Analysis measurements for a 802.11p signal, you
need to follow the steps below.
Step
1. Select the radio standard.
2. Adjust the subcarrier spacing
for your test.
3. Select the Modulation
Analysis measurement again
or restart the measurement.

Viewing Modulation Analysis Measurement Results

The measurement provides following views for 802.11b/g (DSSS/CCK/PBCC):
— IQ Measured Polar Graph
— I/Q Error
— Demod Bits
— Numeric Results
The measurement provides following views for 802.11a/g (OFDM), 802.11g
(DSSS-OFDM):
— IQ Measured Polar Graph
— OFDM EVM
— Demod Bits
— Numeric Results
— Preamble Freq Error vs. Time
The measurement provides following views for 802.11n (20 MHz & 40 MHz):
— IQ Measured Polar Graph
— OFDM EVM
— Demod Bits
— Numeric Results
Keysight WLAN Measurement Guide
Action
Mode Setup Rad io Std
a. Press ,
802.11a/b/g 802.11a/g
, and
Subcarrier Spacing
a. Press
enter the desired value.
Meas, Mod ulation
a. Press
Analysis Restart
, or press
Notes
,
.
For a 10 MHz 802.11p signal, you
, and
can enter 156.25 kHz (that is half
of the preset Subcarrier Spacing
312.5 kHz); For a 5 MHz 802.11p
signal, you can enter 78.125 kHz
(that is one fourth of the preset
Subcarrier Spacing 312.5 kHz).
.
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