Viavi CellAdvisor 5G, User Manual

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CellAdvisor 5G User's Guide
315
PDSCH error vector
magnitude
PDSCH EVM
Test limits On/Off, High Limit (QPSK), High Limit (16QAM), High Limit (64QAM),
High Limit (256QAM)
Modulation quality measurement with 5G TM
NOTE:
You can easily set the slot number by tapping the rectangular next to Slot No ( ). Once you
select any slot number from 1 to 19, the selected slot number is indicated as yellow (active data signal). The valid
signal data is indicated as green; therefore, you must set the right slot number not to select the invalid data signal
indicated as gray.
MIMO time alignment error
In eNode-B supporting Tx Diversity transmission, signals are transmitted from two or more antennas. These signals shall be aligned.
The time alignment error in Tx diversity is specified as the delay between the signals from two antennas at the antenna ports.
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 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