Viavi CellAdvisor 5G, User Manual

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5G TM Signal Analyzer
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Setting measure setup
Before starting the measurement, you need to set Spectrum measurements displayed on the quick access and display tab. See
"
Configuring Spectrum Measurements " for more details. 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 Configuration .
a Tap the number to switch the carrier on or off. You can select up to 8 carriers.
b Tap Center Frequency and input the value using the on-screen keyboard.
3 Tap Radio Setup then the Radio Setup pop-up window appears, if you choose FR1 , select from the following:
a SCS 15 kHz: 5, 10, 15, 20, 25, 30, 40, 50 MHz
b SCS 30 kHz: 5, 10, 15, 20, 25, 30, 40, 50, 60, 70, 80, 90, 100 MHz
c SCS 60 kHz: 10, 15, 20, 25, 30, 40, 50, 60, 70, 80, 90, 100 MHz
d Tap Duplex Type between FDD and TDD as required.
- FDD : both uplink and downlink can transmit at the same time at different spectrum frequencies
- TDD : both uplink and downlink use the same spectrum frequencies but at different times
4 Tap Radio Setup then the Radio Setup pop-up window appears, if you choose FR2 , select from the following:
- SCS 60, 120 kHz: 50, 100 MHz
- You can only select the Duplex Type as TDD .
5 Based on the above setting, tap Test Model FR1 and select the options from the following choices: FR1-TM1.1, FR1-TM1.2,
FR1-TM3.1, FR1-TM3.1a, FR1-TM3.2, FR1-TM3.
6 Based on the above setting, tap Test Model FR2 and select the options from the following choices: FR2-TM1.1, FR2-TM2, FR2-
TM3.1.
7 Tap to switch Phase Correction to On or Off .
Phase Correction is a way of optimizing EVM performance. When you switch it On, it will decrease inter-symbol interference
and compensate distortion caused by a filter applying to each OFDM symbol.
8 Tap Symbol Phase Comp and select from the following choices: Auto , Manual , or Off .
Symbol Phase Compensation is used to compensate for phase differences between symbols caused by upconversion. Users
do not always use the instrument based on RF frequency. In this case, you can set it to Manual or Off.
▪
Auto : Setting radio frequency to center frequency.
▪
Manual : Setting radio frequency as required.
▪
Off : Setting radio frequency to 0.
NOTE:
When calculating Symbol Phase Compensation, you can use the following formula. It is a formula that complies
with 3GPP standard and used to calculate conversion of 5G NR signal to RF signal.
Setting limit
1 Tap the Menu > Limit on the side bar.
2 Tap to switch the Test Limits to On or Off to enable or disable Pass/Fail indication.
The result color for Pass is green, and the result color for Fail is red. It is shown on the top right side of the screen.
3 Tap High Limit to set the upper threshold using the on-screen keyboard.
4 Optional . Tap the Save icon on the side bar and select the save option form the choices available for your measurement mode.