Datagram - JDS Uniphase CellAdvisor JD780A Series User Manual

Frequency error
Time error
Time alignment error
3.
Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings.
See "Using save" on page 31 for more information.
Setting display
You can use the TRACE/DISPLAY hard key to select the display option.
Procedure
1.
Press the TRACE/DISPLAY hard key.
2.
Toggle the Display soft key and select Power or EVM.
The screen changes according to the selected option.
Measurement example
Figure 110 Control channel measurement with LTE - FDD OTA signal analyzer

Datagram

The OTA Datagram is a time-varying spectral representation that shows how the power of a signal
varies with time. The power allocated to the specific resource block will be represented with an
amplitude axis (in dBm) and the waterfall diagram will show the trend of past resource block power
over certain period. Using a marker function facilitates analysis of accumulated resource block power
for data utilization.
Setting measure setup
After configuring test parameters as described in the "Configuring test parameters" on page 197, you
Frequency Error
Time Error
Time Alignment Error
Using LTE - FDD Signal Analyzer
JD780A Series Analyzers
High Limit
Low Limit
High Limit
Low Limit
High Limit
249