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JD780A Series Analyzers
channels.
–
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.
6.
Optional. Go to SAVE/LOAD > Save, and then select the save option from the choices available
for your measurement mode. See "Using save" on page 31 for more information.
Measurement example
Figure 146 Multipath profile measurement with LTE - TDD OTA signal analyzer
Control channel
DL RS power is the resource element power of Downlink Reference Symbol. The absolute DL RS
power is indicated on the BCH. The absolute accuracy is defined as the maximum deviation between
the DL RS power indicated on the BCH and the DL RS power at the BS antenna connector.
The OTA Control Channel provides summary of all control channels including RS power trend over
time. GPS coordinates (latitude and longitude) will be displayed on the screen if a GPS antenna is
connected and locked to the GPS satellites.
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.
316
Using LTE – TDD Signal Analyzer
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