Viavi CellAdvisor 5G, User Manual

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Using 5G NR Signal Analyzer
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5 Tap Sync Raster/SCS 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.
The following table shows the sync raster offset range and sync SCS offset range per SSB SCS and sync raster/SCS
resolution.
SSB SCS
(kHz)
Sync Raster Resolution
(kHz)
Sync Raster Offset
Range
Sync SCS Resolution
(kHz)
Sync SCS Offset
Range
15 180 0 to 250 15 0 to 11
30 180 0 to 506 30 0 to 5
120 720 0 to 92 120 0 to 5
240 720 0 to 48 240 0 to 2
NOTE
Make sure to sync signals using SSB frequency setting as SSB location set by Sync Raster Offset and Sync SCS
Offset might not be matched.
6 Tap SSB Auto Search Mode if you do not know SSB location and do the following steps:
a Tap Auto Preamp/Atten and switch SSB Auto Search to Start to set preamp and attenuation automatically.
b Tap Manual and switch SSB Auto Search to Start for manually setting based on your need.
NOTE
If you tap SSB Auto Search to Start, the searching progress screen appears to let you know the status of searching.
You can tap SSB Auto Search to Stop to stop searching.
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 .
8 Tap SSB Periodicity and select the options from 5 ms , 10 ms , 20 ms , 40 ms , 80 ms , 160 ms .
The SS burst period (SSB periodicity) is defined by each base station and network configurable. 20 ms is the default for the
initial cell selection.
9 Tap to switch PCI ( Physical Cell ID ) to Manual or Auto .
10 Tap PCI and input a value from 0 to 1007 using the on-screen keyboard.
The PCI switches to Manual .
11 Tap PDSCH Configuration or the Configuration icon on the screen to set PDSCH EVM in the PDSCH EVM Setting window
appeared.
a Tap Data and select Data Subcarrier Spacing from the following options: 15 kHz , 30 kHz , 60 kHz , or 120 kHz .
- Start Symbol and Number of RBs are automatically changed based on the Data Subcarrier Spacing selection.
b Tap Grid to set the resource grid that BWP to be assigned per each numerology (SSB SCS and Data SCS).
- In the formula, a wider numerology between SSB SCS and Data SCS represents
μ0 and a narrower numerology
represents
μ.
- Based on the input numerology and bandwidth you have set, input Start Grid and Size Grid using the on-screen
keyboard.
c Tap Bandwidth Part to set the range that to be assigned BWP for the input Data SCS.
- In the formula, input Start BWP and Size BWP value using the on-screen keyboard.
d Back to Data , do the following steps:
- Select Slot Number for analyzing PDSCH EVM from 1 to 19 using the on-screen keyboard.