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Chapter 6 Using LTE/LTE-A TDD Analyzer
Conducting RF measurement
ACLR
The Adjacent Channel Power Ratio (ACPR) designated by the 3GPP LTE/LTE-A
specifications as the Adjacent Channel Leakage Power Ratio (ACLR), is the power
contained in a specified frequency channel bandwidth relative to the total carrier
power. It may also be expressed as a ratio of power spectral densities between the
carrier and the specified offset frequency band.
Setting measure setup
After configuring the spectrum measurement in
on page
measurement 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 bar.
To set measure setup
1
Tap the Setup (
2
Tap Bandwidth and select the value from the following choices: 1.4 MHz, 3 MHz,
5 MHz, 10 MHz, 15 MHz or 20 MHz.
You can also tap the rectangle with value,(
the chart screen and input the value using the on-screen keyboard.
3
Tap Subframe Number and input the value from 0 to 9 using the on-screen
keyboard.
4
Optional. Tap to switch Physical Cell ID to Manual or Auto.
–
–
To set limit
1
Tap Menu > Limit.
2
Tap to switch the Test Limits to On or Off to enable or disable Pass/Fail indica-
tion.
The result table color for Pass is green, and the result table color for Fail is red.
3
Optional: Tap the Save hot key on the side bar and select the save option from the
choices available for your measurement mode.
Figure 72
Page 142
9, you can set the measure setup to continue your measurement. The
) icon in the side bar.
Auto lets the instrument detect the Physical Cell ID for the LTE signal auto-
matically
Manual sets a specific Physical Cell ID for the LTE signal manually in order to
speed up the synchronization with a BTS.
shows an example of LTE/LTE-A TDD ACLR measurement.
SPA06MA-O User's Guide
"Configuring spectrum measurements"
22145360, R005
) under
April 2021
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