JDS Uniphase CellAdvisor JD780A Series, User Manual

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JD780A Series Analyzers
Using LTE
– TDD Signal Analyzer
297
c. Press the µs soft key.
NOTE
The Delay setting is used only when there is a time offset in the signals to be measured.
–
To select the cyclic prefix, toggle the Cyclic Prefix soft key and select Normal or
Extended . See
“Appendix E – Cyclic prefix table” on page 575 for OFDM parameter details
by different bandwidth.
Measurement example
Figure 137 Time alignment error measurement with LTE - TDD signal analyzer
NOTE
You can use the LIMIT hot key to analyze your measurements with the user-definable
limit and Pass/Fail indication. See
“Setting limit for modulation tests” on page 300 for
more information.
Data allocation map
The Data Allocation Map function represents data allocation as a mapping.
Setting measure setup
After configuring test parameters as described in the
“Configuring test parameters” on page 265, you
can continue your measurement. The measurement settings can be saved and recalled as a file. You
can also use JDViewer, PC application software to configure a measure setup, save as a file, and load
the file on to the instrument.
Procedure
1.
Press the MEASURE SETUP hot key.
2.
To set the nominal channel bandwidth to be measured, complete the following steps:
a. Press the Bandwidth soft key.
b. Select the bandwidth option: 1.4 MHz , 3 MHz , 5 MHz , 10 MHz , 15 MHz , or 20 MHz .