Viavi SPA06MA-O R005 User Manual page 116

Chapter 5 Using LTE/LTE-A FDD Analyzer
Conducting modulation measurement
h
To set limit
1 Tap Menu > Limit.
2 Tap the test items and set the limits depending on your selected measurement
mode:
To set the limit for
Data EVM RMS
Data EVM Peak
IQ Origin Offset
3 Optional: Tap the Save hot key on the side bar and select the save option from the
choices available for your measurement.
To set marker
1 Tap Menu > Marker.
2 Tap RB Number to select the resource block to be marked and enter the resource
block number using the on-screen keyboard.
The marker appears on the selected resource block.
3 Tap Marker View between On and Off to display of dismiss the result of the
selected resource block.
Figure 47
Figure 47 LTE/LTE-A FDD data channel measurement
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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.
Tap PDSCH Precoding to set On or Off to enable or disable the PDSCH
precoding.
Select and set
Test limits On/Off, High Limit
Test limits On/Off, High Limit
Test limits On/Off, High Limit
shows an example of LTE/LTE-A FDD data channel measurement.
SPA06MA-O User's Guide
22145360, R005 April 2021