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Chapter 8 Using LTE - FDD Signal Analyzer
The Set Timing menu becomes activated.
5
To define a schedule for an auto measurement, complete the following steps:
a
Press the Set Timing soft key.
b
Press the Start Time (HH:MM) soft key.
c
Enter the time in the HH:MM format, and then press the Enter soft key.
d
Press the Stop Time (HH:MM) soft key.
e
Enter the time in the HH:MM format, and then press the Enter soft key.
f
Press the Time Interval soft key.
g
Enter the amount of time in minutes, and then press the Enter soft key.
6
Press the Settings soft key, and then set the following as needed:
a
Press the Bandwidth soft key, and then 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.
b
Toggle the Cell ID soft key and select Auto or Manual as desired:
–
–
c
Press the MIMO soft key, and then select the antenna number option: 2x2 or 4x4.
This MIMO (Multiple Input Multiple Output) setting is activated only if the option 030 LTE-
Advanced FDD is installed with a license number. If not, the instrument sets this option to
2x2 by default. A 2x1 or 4x1 RF combiner is also required to able to test on MIMO
channels.
d
Press the Antenna Port soft key, and then select the option: Auto, 0, 1, 2, or 3.
If the option 030 LTE-Advanced FDD is not installed or if the MIMO is set to 2x2, the
antenna ports 2 and 3 are disabled.
e
Toggle the External Offset soft key and select On.
f
Enter a value by using the numeric keys, and then press the dB soft key.
g
To turn the Multimedia Broadcast Multicast Service (MBMS) feature on or off, toggle the
MBMS soft key and select On or Off. For proper MBMS testing, you need to set the
Subframe No with the same PMCH subframe number.
h
To set the Multicast Broadcast Single Frequency Network (MBSFN) detection automatically
or manually for MBMS testing, toggle the MBSFN soft key and select Auto or Manual. An
automatically detected or manually entered MBSFN ID appears on the screen.
7
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.
8
Press the Run Test soft key to start to run a test.
The Auto Measure Results window appears at the end of the test.
9
To stop running the test, press the Abort soft key.
10
To change the view on the screen during the test, press the Display and then select the view
option from the following choices:
–
Screen: You can view each measurement screen as the test progresses.
–
Results: You can view a measurement result table as the test progresses.
–
Settings: You can view a measurement setting table as the test progresses.
Setting display
After completion of the auto measurement, the screen menu changes to Trace/Display so that you can
view the results in different forms.
Procedure
1
Toggle the Display soft key and select the display option:
–
Result: You can view the result table.
The Display Result menu becomes activated.
210
Auto: Lets the instrument detect the Cell ID for the LTE signal automatically.
Manual: Sets a specific Cell ID for the LTE signal manually in order to speed up the
synchronization with a BTS.
JD700B Series User's Guide
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