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JD780A Series Analyzers
310
Using LTE
– TDD Signal Analyzer
The component carrier configuration window appears.
b.
Press the
CA Range
soft key.
c.
Enter the number of the component carrier to be set between 1 and 5.
d.
Press the
Enter
soft key.
e.
Toggle the
Turn On
soft key and then select
On
to set parameters and view the results for
the selected component carrier on the screen or
Off
to turn it off.
f.
Set the following parameters as needed:
–
Center Frequency
,
Channel
,
Bandwidth
,
Cell ID
,
CFI
,
PHICH Ng
,
Antenna Port
,
MBMS On/Off
,
Cyclic Prefix
, and
PDSCH Modulation Type
g.
To set more component carriers, repeat the steps
c-f
.
3.
Press the
MEASURE SETUP
hot key again.
4.
Toggle the
EVM Detection Mode
soft key and select
Single
or
Combine
as desired:
–
Single:
Testing on one single antenna connected to your JD780A series with a cable.
–
Combine:
Testing on multiple antennas connected to your JD780A series with a 2x1 or 4x1
combiner or an antenna.
5.
To select the subframe number to be measured, do one of the following:
–
If the
EVM Detection Mode
is set to
Single
, press the
Subframe No
soft key and then set
the subframe number.
NOTE
For MBMS testing, this subframe number must be neither 0 nor 5 as these subframes 0
and 5 are not available for MBMS and it must be set to the MBMS transmitted channel
’s
subframe number.
–
If the
EVM Detection Mode
is set to
Combine
, toggle the
Subframe No
soft key and then
select
0
or
5
.
6.
To set the threshold for PDSCH, complete the following steps:
a.
Press the
PDSCH Threshold
soft key.
b.
Enter a value by using the numeric keys.
c.
Press the
dB
soft key.
7.
Toggle the
PDSCH Precoding
soft key between
On
and
Off
to enable or disable the PDSCH
precoding.
8.
To select the number of antenna ports, toggle the
MIMO
soft key and select
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.
Setting display
You can use the
TRACE/DISPLAY
hard key to select modulation analysis or spectrum analysis.
Procedure
1.
Press the
TRACE/DISPLAY
hard key.
2.
Toggle the
Display
soft key and select
MA
for modulation analysis or
SA
for spectrum analysis.
The screen changes according to the selected option.
Содержание CellAdvisor JD780A Series
Страница 52: ...JD780A Series Analyzers 52 Getting Started Figure 6 Example of Web remote on Chrome...
Страница 91: ...JD780A Series Analyzers Using Spectrum Analyzer 91 Figure 23 PIM detection for multiple carriers...
Страница 254: ...JD780A Series Analyzers 254 Using LTE FDD Signal Analyzer 3 RS SINR 4 S SS RSSI 5 P SS Power...
Страница 323: ...JD780A Series Analyzers Using LTE TDD Signal Analyzer 323 3 RS SINR 4 S SS RSSI 5 P SS Power...
Страница 390: ...JD780A Series Analyzers 390 Using EV DO Signal Analyzer 3 Pilot 4 MAC 64 5 MAC 128...
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Страница 590: ...JD780A Series Analyzers 590 Appendix Figure 306 Append keywords window...