Viavi CellAdvisor 5G, User Manual

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Using LTE/LTE-A TDD Analyzer
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3 To select the number of antenna ports, tap the MIMO and select 2x2 or 4x4 .
4 To select the Cyclic Prefix, tap Cyclic Prefix and select Normal or Extended .
5 Optional. Tap the Save icon on the side bar and select the save option form the choices available for your measurement mode.
OTA ID Scanner measurement with LTE/LTE-A TDD Analyzer
Multipath Profile
The Multipath Profile enables you to determine RF environmental conditions of testing area. It indicates the amount of power of the
dominant pilot signal that is dispersed outside the main correlation peak due to multipath echoes that are expressed in dB. This
value should be very small ideally.
The multipath profile is the result of portions of the original broadcast signal arriving at the receiving antenna out of phase. This can
be caused by the signal being reflected off objects such as buildings or being refracted through the atmosphere differently from the
main signal.
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 the
Save/Load icons on the side bar.
1 Tap the Setup ( )icon on the side bar.
2 Tap Bandwidth and select the value from the following choices: 1.4 MHz , 3 MHz , 5MHz , 10 MHz , 15 MHz, or 20 MHz .
3 Tap RS Window and select the RS window option:
2 μs, 4 μs,
or
8 μs
.
4 Tap Subframe Number to set the number of subframe using the on-screen keyboard.
5 Tap Physical Cell ID and select the type Manual or Auto .
Auto lets the instrument detect the Physical Cell ID for the LTE signal automatically, and Manual sets a specific Physical Cell
ID for the LTE signal manually in order to speed up the synchronization with a BTS.
6 To select the number of antenna ports, tap the MIMO and select 2x2 or 4x4 .
7 To select the Cyclic Prefix, tap Cyclic Prefix and select Normal or Extended .