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Using LTE/LTE-A TDD Analyzer
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6 To assign an antenna port number automatically or manually, tap the Antenna Port under Antenna menu and select the
option: Auto , Antenna 0 , Antenna 1 , Antenna 2 , or Antenna 3 .
If the MIMO is set to 2x2, the antenna ports 2 and 3 are disabled.
7 Tap Cyclic Prefix and select Normal or Extended .
8 Tap Delay and enter a value using the on-screen keyboard to set the amount of delay in
μs
.
9 Tap Special Subframe and enter a value using the on-screen keyboard.
Setting limit
1 Tap Menu > Limit .
2 Tap to switch Subframe Power/ Frame Avg Power/ Time Error/ IQ Origin Offset to set the Test limits to On or Off with
setting High and (Low) Limits using the on-screen keyboard to enable or disable Pass/Fail indication.
3 Optional. Tap the Save icon on the side bar and select the save option form the choices available for your measurement mode.
Power vs Time (Frame) measurement with LTE/LTE-A TDD Analyzer
Power vs Time (Slot)
The Power vs. Time (Slot) in LTE/LTE-A TDD Signal Analyzer measures the modulation envelope in the time domain, showing the
signal rise and fall shapes of LTE/LTE-A TDD signal.
NOTE:
In this measurement, desirable level of the input power is lower than -10 dBm. If the input power to be measured is
-10 dBm or higher, it is highly recommended that you use an external attenuator.
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 using 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 Slot Number to set the number of slots using the on-screen keyboard.
4 Optional. 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.