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Using LTE/LTE-A TDD Analyzer
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Tap
PDCCH Mode
to select
REG
to calculate EVM based on Resource Element Group or
Average
to calculate EVM after
adding all the PDCCH signals from one subframe.
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Tap
PDSCH Precoding
to set
On
or
Off
to enable or disable the PDSCH precoding.
Setting limit
1
Tap
Menu
>
Limit
.
2
Tap to switch the
Frequency error/ EVM/ Power/ Time Error
to set the
Test limits
to
On
or
Off
with setting
High and Low
Limits/required options
using the on-screen keyboard to enable or disable Pass/Fail indication.
Using marker
If you turn the Chart view on, you can use
Marker
to place a marker at a specific symbol.
1
Tap
Menu
>
Marker
.
2
Tap
Marker View
between
On
and
Off
to display or dismiss the marker on the chart.
3
Tap
Symbol
to select the symbol number to which the marker is placed. Enter the value using the on-screen keyboard.
Subframe measurement with LTE/LTE-A TDD Analyzer
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.
Содержание CellAdvisor 5G
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