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CellAdvisor 5G User's Guide
185
Trigger spectrum measurement with 5G NR
Conducting RF measurement
Channel Power
The Channel Power measurement is a common test used in the wireless industry to measure the total transmitted power of a radio
within a defined frequency channel. It acquires a number of points representing the input signal in the time domain, transforms this
information into the frequency domain using Fast Fourier Transform (FFT), and then calculates the channel power. The effective
resolution bandwidth of the frequency domain trace is proportional to the number of points acquired for the FFT.
The channel power measurement identifies the total RF power, power spectral density, and Peak to Average Ratio (PAR) of the
signal within the channel bandwidth.
Setting measure setup
After configuring spectrum measurement in " Configuring Spectrum Measurements ", you can set the measure setup to continue your
measurement. The 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.
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)