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Subframe
The Subframe measures the modulation accuracy of all the data and control channels
at the specified subframe (1 ms).
Setting measure setup
After configuring spectrum measurement in
page
9, you can set the measure setup to continue your measurement. The measure-
ment 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 bars.
To set measure setup
1
Tap the Setup (
2
Tap to switch Carrier Auto Search to Start to start searching the SSB frequency
and apply it or to Stop to stop searching.
3
Tap to switch Radio Config and set Duplex Type (FDD/TDD), DSS Type (Co-
channel) and Technology (LTE/NR) and other related parameters as below:
You can select Co-channel to find NR frequency based on the LTE operating
frequency in co-channel and select Adjacent channel to search both LTE and NR
frequency. Note that Adjacent channel will be available in the next release.
•
When LTE is selected as Technology, do the following steps:
–
–
–
–
April 2021
) icon in the side bar.
NOTE
If searching is unavailable, the instrument displays a pop-up message saying
that it fails to detect NR (SSB)
frequency.
Select Bandwidth (MHz) from the following choices: 20, 15, 10, or 5.
Select MIMO between 2x2 and 4x4 to set the number of antenna ports. If the
MIMO is set to 2x2, the antenna ports 2 and 3 are disabled.
Select Cyclic Prefix between Normal and Extended. Cyclic prefix works as
a buffer region or guard interval to protect the OFDM signals from inter
symbol interference.
-
Normal: Intended to be sufficient for the majority of scenarios
-
Extended: Intended for scenarios with particularly high delay spread
Select PHICH Ng between Normal and Extended and then to set the
number of PHICH groups (Ng): 1/6, 1/2, 1, or 2. The PHICH group value/Ng
is decided based on the number of PHICH groups per subframe. PHICH
SPA06MA-O User's Guide
"Configuring spectrum measurements" on
22145360, R005
Chapter 9 Using 5G DSS Signal Analyzer
Conducting modulation measurements
Page 315
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