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Chapter 9 Using 5G DSS Signal Analyzer
Conducting modulation measurements
7
Tap CFI and input a value from 1 to 3 as desired using the on-screen keyboard.
8
Tap SSB frequency and input the value using the on-screen keyboard.
9
Tap GSCN and input the value from 2 to 26639 using the on-screen keyboard. If
you need to search SSB based on ARFCN raster, it would take too long time
since ARFCN raster is very narrow. Therefore, it is recommended that you define
a SSB searching frequency in wider steps. This is the usage/purpose of GSCN.
You can search the frequency corresponding to GSCN in maximum 100 MHz
bandwidth of ARFCN that SPA06MA-O supports.
10 Tap PCI (Physical Cell ID) and select between LTE PCI and NR PCI.
–
–
11 Tap PDSCH, and then select the PDSCH modulation type option: Auto, QPSK,
16 QAM, 64 QAM, 256 QAM, LTE E-TM3.3, LTE E-TM3.2, LTE E-TM3.1a, LTE
E-TM3.1, LTE E-TM2a, LTE E-TM2, LTE E-TM1.2 or LTE 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.
12 Tap PDSCH Threshold to set the threshold for PDSCH and enter a value by
using the on-screen keyboard.
13 Tap PDSCH Precoding to set On or Off to enable or disable the PDSCH
precoding.
14 Tap Menu > Display and select Reset to refresh your measurement screen.
To set the limit
1
Tap Menu > Limit.
2
Tap NR Limit and set the limits depending on your selected measurement mode:
To set the limit for
Frequency error
Page 306
NOTE
Based on the GSCN input frequency, the SSB Frequency is automatically
changed.
Tap to switch LTE PCI Mode to Manual or Auto and input a value from 0 to
503.
The PCI switches to Manual.
Tap NR PCI Mode to Manual or Auto and input a value from 0 to 1007.
The PCI switches to Manual.
NOTE
You can set Auto to let the instrument detect the Physical Cell ID for the LTE/
NR signal automatically and Manual to set the specific Physical Cell ID for the
LTE/NR signal manually in order to speed up the synchronization with a BTS.
Set
Test limits On/Off, High/Low Limit
SPA06MA-O User's Guide
22145360, R005
April 2021
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