Rohde & Schwarz R&S CMW-KM300, Руководство пользователя, Страница: 344 / 388

NB-IoT NPRACH Measurement
R&S
®
CMW-KM300/-KS300
344 User Manual 1178.5689.02 ─ 06
NPRACH Preamble Format
Enter the NPRACH preamble format used by the UE.
For background information, see Chapter 4.2.6, "NB-IoT Preamble Structure" ,
on page 331.
Remote command:
CONFigure:NIOT:MEAS<i>:PRACh:PFORmat
Number of Preambles
Specifies the number of preambles to be captured per measurement interval for multi-
preamble result views, for example "EVM vs Preamble" and "Power vs Preamble".
Single-preamble views evaluate only one preamble per measurement interval. To ach-
ieve maximum measurement speed for these views, set "Number of Preambles" to 1.
See also Chapter 4.2.3, "Defining the Scope of the Measurement" , on page 329.
Remote command:
CONFigure:NIOT:MEAS<i>:PRACh:NOPReambles
Period of Preambles
Specifies the period expected between subsequent preambles.
See also Chapter 4.2.3, "Defining the Scope of the Measurement" , on page 329.
Remote command:
CONFigure:NIOT:MEAS<i>:PRACh:POPReambles
4.3.4.2 Modulation Settings
The following parameters configure the modulation settings of the NB-IoT NPRACH
measurement.
Figure 4-13: Modulation settings
Statistic Count ............................................................................................................. 344
EVM Window Length ...................................................................................................345
EVM Window Position .................................................................................................345
Statistic Count
Defines the number of measurement intervals per measurement cycle. A measurement
cycle is the duration of a single-shot measurement. For continuous measurements, the
measurement cycle is relevant for average results.
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