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Chapter 7 Using 5G NR Signal Analyzer
Conducting RF measurements
ACLR
The Adjacent Channel Power Ratio (ACPR) designated by the 3GPP WCDMA
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/SSB SCS and select the Setting in the pop-up window based on
your need. SSB is abbreviation for Synchronization Signal Block or SS Block and
it refers to Synchronization PBCH block since the synchronization signal and
PBCH channel are packed as a single block that always moves together. SSB
should be detected first in 5G NR frame. See
criteria based on the operating frequency.
3
Tap Sync Raster Offset to set the sync raster resolution to 180 kHz (FR1) or to
720 kHz (FR2) for carrier frequency center using the on-screen keyboard. See
Table 37
resolution.
4
Tap Sync SCS Offset to fine-tune the offset using the SCS. See
for the sync raster offset range per SSB SCS and sync raster resolution.
5
Tap SSB Center Frequency and input the value using the on-screen keyboard.
6
Tap GSCN and input the value using the on-screen keyboard.
Based on GSCN input frequency, the SSB frequency changes automatically.
7
Tap L to set the maximum number of SS-PBCH blocks within a single SS burst
set (A set of SS being transmitted in 5 ms window of SS transmission) among 4, 8
and 64. Refer to the selection criteria based on the table in Step 2.
Page 204
9, you can set the measure setup to continue your measurement. The
) icon in the side bar.
below for the sync raster offset range per SSB SCS and sync raster
SPA06MA-O User's Guide
"Configuring spectrum measurements"
Table 36
22145360, R005
below for the setting
Table 38
below
April 2021
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