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11 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.
12 Tap PDSCH Threshold to set the threshold for PDSCH and enter a value by
using the on-screen keyboard.
13 Tap PDSCH Precoding to set On or Off to enable or disable the PDSCH
precoding.
14 Tap EVM Detection Mode to set Combine or Single.
–
–
15 Tap Menu > Display and select Reset to refresh your measurement screen.
a
b
To set the limit
1
Tap Menu > Limit.
2
Tap NR Limit and set the limits depending on your selected measurement mode:
To set the limit for
Frequency error
PDSCH EVM
Data EVM RMS
Data EVM Peak
P-SS EVM
S-SS EVM
April 2021
Combine: Testing on multiple antennas connected to your SPA06MA-O
series with a 2x1 or 4x1 combiner or an antenna
Single: Testing on one single antenna connected to your SPA06MA-O series
with a cable
Tap Reset to refresh your measurement screen.
You can check the EVM Peak is changed at the right bottom of the measure-
ment screen when you tap Reset.
Tap to switch Chart to On or Off.
You can check the Chart view when On is selected. You can check Channel
Summary with Subframe in a table when Off is selected.
Set
Test limits On/Off, High/Low Limit
Test limits On/Off, High Limit for QPSK, 16 QAM, 64 QAM,
256 QAM
Test limits On/Off, High Limit
Test limits On/Off, High Limit for QPSK, 16 QAM, 64 QAM,
256 QAM
Test limits On/Off, High Limit
Test limits On/Off, High Limit
SPA06MA-O User's Guide
22145360, R005
Chapter 9 Using 5G DSS Signal Analyzer
Conducting modulation measurements
Page 317
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