Chapter 9
Using LTE-TDD Signal Analyzer
320
JD700B Series User’s Guide
3
Press the
PvsT Test Limits
soft key, and then enable test limits as desired.
4
Press the
Modulation Test Limits
soft key, and then enable test limits as desired.
5
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.
6
Optional
. Go to
SAVE/LOAD > Save
, and then select
Limit
to save the limit settings.
See “Using save” on page 35 for more information.
NOTE
You can use the
Allowed % Change
soft key for each test item to compare two
measurement values displayed in the result table. This requires setting the
Display
mode
to
Compare
in advance.
Setting measure setup
After configuring test parameters as described in the “Configuring test parameters” on page 283, you can
continue your measurement. The measurement settings can be saved and recalled as a file. You can also
use JDViewer, PC application software to configure a measure setup, save as a file, and load the file on to
the instrument.
Procedure
1
Press the
MEASURE SETUP
hot key.
2
Toggle the
Configuration
soft key and select the configuration option:
Current:
Lets the instrument use current frequency (single carrier) and determine pass or
fail based on the instrument
’
s limit settings in Auto Measure.
Scenario:
Runs a test with a programmed scenario in JDViewer.
The Scenario menu becomes activated.
3
To load a scenario, press the
Scenario
soft key, and then select a scenario file to load.
4
Toggle the
Test Time
soft key and select the test time option:
Now:
Lets the instrument run a test only once.
Schedule:
Lets the instrument repeat tests as defined in the Set Timing.
The Set Timing menu becomes activated.
5
To define a schedule for an auto measurement, complete the following steps:
Press the
Set Timing
soft key.
Press the
Start Time (HH:MM)
soft key.
Enter the time in the HH:MM format, and then press the
Enter
soft key.
Press the
Stop Time (HH:MM)
soft key.
Enter the time in the HH:MM format, and then press the
Enter
soft key.
Press the
Time Interval
soft key.
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:
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
.
Toggle the
Physical Cell ID
soft key and select
Auto
or
Manual
as desired:
Auto:
Lets the instrument detect the Physical Cell ID for the LTE signal automatically.
Manual:
Sets a specific Physical Cell ID for the LTE signal manually in order to speed
up the synchronization with a BTS.
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 031 LTE-
Advanced TDD 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.
Press the
Antenna Port
soft key, and then select the option:
Auto
,
0
,
1
,
2
, or
3
.
If the option 031 LTE-Advanced TDD is not installed or if the MIMO is set to 2x2, the
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