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Chapter 8 Using LTE - FDD Signal Analyzer
To set the limit for
Frequency error
Error vector magnitude
Time alignment error
RS power
5
To verify unwanted emissions, press the Unwanted Emissions soft key, and then do the
following as needed:
To set the limit for
Occupied bandwidth
Adjacent channel power ratio
Spectrum emission mask
Spurious emissions
6
Optional. You can enable alarm sound that goes off if the measurement falls outside of the limit.
Toggle the Beep soft key between On and Off to enable or disable the beep sound.
7
Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings.
See "Using save" on page 32 for more information.
Setting measure setup
After setting frequency as described in the "Configuring test parameters" on page 173, you can
continue your measurement.
Procedure
1
Press the MEASURE SETUP hot key.
2
Press the Bandwidth soft key.
3
Select the nominal channel bandwidth to be measured, from the choices: 1.4 MHz, 3 MHz,
5 MHz, 10 MHz, 15 MHz, and 20 MHz.
4
Press the Sector soft key, and then select the sector option: Alpha, Beta, or Gamma.
5
To set external offset, complete the following steps:
a
Toggle the External Offset soft key and select On.
b
Enter a value by using the numeric keys.
c
Press the dB soft key.
6
To save your settings and results, go to SAVE/LOAD > Save and then perform functions as you
desire. See "Using save" on page 32 for more information.
7
Press the Run Test soft key to start to run a test.
The Auto Measure Results window appears at the end of the test.
8
When prompted on the screen, connect the cable from the Spectrum Analyzer RF In port of the
instrument either to Antenna Port 0 or Antenna Port 1 of the eNode-B, and then change the TM
mode on the eNode-B side.
9
Press the Continue soft key to continue testing.
10
Repeat the steps 8-9 until completion of the test.
208
Select
Frequency Error > Test Limits
[E-TM2|E-TM3.1|E-TM3.2|E-
TM3.3]
EVM > Test Limits [E-TM2|E-
TM3.1|E-TM3.2|E-TM3.3]
Time Alignment Error
RS Power
Select
Occupied BW
ACLR
SEM
Spurious Emissions
JD700B Series User's Guide
Set
High Limit
Low Limit
High Limit (QPSK)
High Limit (16 QAM)
High Limit (64 QAM)
High Limit
High Limit
Low Limit
Set
High Limit
Mask Type
Range Table
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