Table of Contents
Advertisement
Chapter 6 Using LTE/LTE-A TDD Analyzer
Conducting modulation measurement
e
f
g
h
i
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
Frequency Error
PDSCH EVM
PMCH EVM
Data EVM RMS
Data EVM Peak
DL RS Power
Time Error
3
Optional: Tap the Save hot key on the side bar and select the save option from the
choices available for your measurement.
Figure 77
Page 152
An automatically detected or manually entered MBSFN ID appears on the
screen.
To set the delay, tap Delay and enter the value using the on-screen keyboard
to set the amount of delay in μs.
NOTE
The Delay setting is used only when there is a time offset in the signals to be
measured.
To select the Cyclic Prefix, tap Cyclic Prefix and select Normal or
Extended.
To set the threshold for PDSCH, tap PDSCH Threshold and enter a value by
using the on-screen keyboard.
Tap PDSCH Modulation Type, and then select the modulation type option:
Auto, QPSK, 16 QAM, 64 QAM, 256 QAM, E-TM3.3, E-TM3.2, E-TM3.1a,
E-TM3.1, E-TM2a, E-TM2, E-TM1.2 or 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.
Tap PDSCH Precoding to set On or Off to enable or disable the PDSCH
precoding.
Select and 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 for QPSK/16 QAM/64 QAM
Test limits On/Off, High Limit
Test limits On/Off, High Limit
Test limits On/Off, High/Low Limit
Test limits On/Off, High/Low Limit
shows an example of LTE/LTE-A TDD constellation measurement.
SPA06MA-O User's Guide
22145360, R005
April 2021
Advertisement
Table of Contents
