Viavi CellAdvisor 5G, User Manual

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Using 5G NR Signal Analyzer
198
Setting measure setup
Before starting the Beam Analyzer, you need to set Spectrum measurements displayed on the quick access and display tab. See
"
Configuring Spectrum Measurements " for more details.
1 Tap the Setup ( )icon on the side bar.
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 actually 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.
The following table shows the setting criteria based on the operating frequency.
Operating Frequency
L
Case SCS Slots in a burst period (slot duration)
< 3 GHz (FR1) 4
A
{2,8} +14*n
15 kHz 5 (1 ms)
B
{4,8,16,20} +28*n
30 kHz 10 (0.5 ms)
C
{2,8} +14*n
30 kHz 10 (0.5 ms)
3 to 6 GHz (FR1) 8
A
{2,8} +14*n
15 kHz 5 (1 ms)
B
{4,8,16,20} +28*n
30 kHz 10 (0.5 ms)
C
{2,8} +14*n
30 kHz 10 (0.5 ms)
> 6 GHz (FR2)
64
D
{4,8,16,20} +28*n
120 kHz 40 (0.125 ms)
E
{8,12,16,20,32,36,40,44} +56*n
240 kHz 80 (62.5 ms)
3 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