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Chapter 6 Using LTE/LTE-A TDD Analyzer
Conducting RF measurement
Figure 70 LTE/LTE-A TDD occupied bandwidth measurement
Spectrum emission mask
The Spectrum Emission Mask (SEM) measurement is to identify and determine the
power level of out-of band spurious emission outside the necessary channel
bandwidth and modulated signal. It measures the power ratio between in-band and
adjacent channels. The SPA06MA-O indicates either Pass or Fail based on the
specified limit of the signal.
Setting measure setup
After configuring the spectrum measurement in
on page
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.
To set measure setup
1
Tap the Setup (
2
Tap Bandwidth and select the value from the following choices: 1.4 MHz, 3 MHz,
5 MHz, 10 MHz, 15 MHz or 20 MHz.
You can also tap the rectangle with value,(
the chart screen and input the value using the on-screen keyboard.
Page 140
NOTE
The Occupied Bandwidth measurement shows both of power across the band
and power bandwidth in a user specified percentage to determine the amount
of spectrum used by a modulated signal. Occupied bandwidth is typically
calculated as the bandwidth containing 99% of the transmitted power.
9, you can set the measure setup to continue your measurement. The
) icon in the side bar.
SPA06MA-O User's Guide
"Configuring spectrum measurements"
22145360, R005
) under
April 2021
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