Chapter 9
Using LTE-TDD Signal Analyzer
JD700B Series User’s Guide
305
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.
To assign a antenna port number automatically or manually, press the
Antenna Port
soft
key and select the option:
Auto
,
0
,
1
,
2
, and
3
. If the option 031 LTE-Advanced TDD is not
installed or if the MIMO is set to 2x2, the antenna ports 2 and 3 are disabled.
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. If this setting is on, either PMCH or
PDSCH appears on the screen depending on the detected channel.
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.
To set the delay, complete the following steps:
Press the
Delay
soft key to set the amount of delay in µs.
Enter a value by using the numeric keys. You can also use the rotary knob.
Press the
µs
soft key.
NOTE
The Delay setting is used only when there is a time offset in the signals to be measured.
To select the cyclic prefix, toggle the
Cyclic Prefix
soft key and select
Normal
or
Extended
. See “Appendix E – Cyclic prefix table” on page 784 for OFDM parameter details
by different bandwidth.
Press the
PDSCH Modulation Type
soft key, and then select the modulation type option:
Auto
,
QPSK
,
16 QAM
,
64 QAM
,
E-TM3.3
,
E-TM3.2
,
E-TM3.1
,
E-TM2
,
E-TM1.2
, and
E-TM1.1
. If two or more modulation types are used in a frame, select
Auto
. If the PDSCH
uses the same modulation type in a frame or in a subframe, select a specific modulation
type to get more accurate EVM.
NOTE
If you have installed a license for the option
033 LTE-TDD 256 QAM Demodulator
on
your CellAdvisor, you will have additional PDSCH modulation types of
256 QAM
,
E-TM3.1a
, and
E-TM2a
.
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.
Toggle the
PDSCH Precoding
soft key between
On
and
Off
to enable or disable the
PDSCH precoding.
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 ...