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Chapter 9 Using 5G DSS Signal Analyzer
Conducting modulation measurements
10 Tap PDSCH, and then select the PDSCH modulation type option: Auto, QPSK,
16 QAM, 64 QAM, 256 QAM, LTE E-TM3.3, LTE E-TM3.2, LTE E-TM3.1a, LTE
E-TM3.1, LTE E-TM2a, LTE E-TM2, LTE E-TM1.2 or LTE E-TM1.1.
If two or more modulation types are used in a frame, select Auto. If the PDSCH
uses the same modulation type in a frame or in a subframe, select a specific
modulation type to get more accurate EVM.
11 Tap PDSCH Threshold to set the threshold for PDSCH and enter a value by
using the on-screen keyboard.
12 Tap PDSCH Precoding to set On or Off to enable or disable the PDSCH
precoding.
Figure 146
Figure 146 5G DSS DSS channel mapper measurement
Control channel
The Control Channel measures the constellation for the specified control channel as
well as modulation accuracy of the control channel at the specified subframe.
Setting measure setup
After configuring spectrum measurement in
page
9, you can set the measure setup to continue your measurement. The measure-
ment settings can be saved and recalled as a file by selecting File Type as Setup and
load the file onto the instrument using the Save/Load icons on the side bars.
To set measure setup
1
Tap the Setup (
Page 310
shows an example of DSS channel mapper measurement.
) icon in the side bar.
SPA06MA-O User's Guide
22145360, R005
"Configuring spectrum measurements" on
April 2021
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