Chapter 9
Using LTE-TDD Signal Analyzer
326
JD700B Series User’s Guide
5 GHz.
Set the following parameters as needed:
Center Frequency
,
Channel Number
,
Bandwidth
,
Physical Cell ID
,
CFI
,
PHICH Ng
,
Antenna Port
,
MBMS On/Off
,
Cyclic Prefix
, and
PDSCH Modulation Type
NOTE
You can set
PSS/SSS EVM
Threshold
value using the rotary knob, the arrow keys, or
the numeric keys only if
MA
is selected in
TRACE/DISPLAY
.
To set more component carriers, repeat the steps
c-g
.
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 JD700B series with a cable.
Combine:
Testing on multiple antennas connected to your JD700B 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:
Press the
PDSCH Threshold
soft key.
Enter a value by using the numeric keys.
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,
SA
for spectrum analysis or
Dual Sp
for dual spectrogram analysis.
The screen changes according to the selected option.
3
If
SA
is selected, complete the following steps:
Press the
CC#
soft key, and then select between
CC1
and
CC2
.
Press the
Select Trace
soft key and then select the trace number:
T1
,
T2
,
T3
,
T4
,
T5
, or
T6
.
The legend shape of the selected trace changes from square to round to indicate that the
trace is the active one now.
Do one of the following:
To
Select
Trace Legend
Clear current data and display with new
measurements
Clear Write
W
Содержание CellAdvisor JD700B Series
Страница 2: ...CellAdvisorTM JD700B Series FW3 120 User s Guide ...
Страница 105: ...Chapter 4 Using Spectrum Analyzer 104 JD700B Series User s Guide Figure 44 PIM detection for multiple carriers ...
Страница 406: ...Chapter 11 Using EV DO Signal Analyzer JD700B Series User s Guide 405 3 Pilot 4 MAC 64 5 MAC 128 ...
Страница 734: ...Chapter 18 Perfroming BBU Emulation JD700B Series User s Guide 733 Figure 441 Example of verification of link status ...
Страница 763: ...Chapter 21 Performing Fiber Inspection 762 JD700B Series User s Guide Figure 461 Fiber inspection report ...
Страница 808: ...Appendix JD700B Series User s Guide 807 JD740B series ...
Страница 811: ...Appendix 810 JD700B Series User s Guide Figure 470 Append keywords window ...