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NB-IoT Multi-Evaluation Measurement
R&S
®
CMW-KM300/-KS300
207
User Manual 1178.5689.02 ─ 06
3.2.5.2
Offline Mode and Offline Segment
In list mode, it is possible to select the results of a single segment for display in the
measurement diagram (see also
"Offline Segment Nr. < List Mode"
on page 236). This
"offline mode" offers several advantages:
●
Check of the measurement results (e.g. while developing test scripts)
●
Calculation and display of additional measurement results (traces). Use the
FETCh:NIOT:MEAS:MEValuation:TRACe:...
commands to retrieve these
results.
After a list mode measurement is completed, the measurement diagram shows the last
segment measured. Calculation of the offline results in an arbitrary segment requires a
two-stage measurement:
1. Start a single-shot list mode measurement
(
INITiate:NIOT:MEAS:MEValuation
) to collect all measurement data.
2. Select the offline segment
(
CONFigure:NIOT:MEAS:MEValuation:LIST:OSINdex <Segment>
).
3. Initiate a second measurement (repeat
INITiate:NIOT:MEAS:MEValuation
).
4. Go to local to view the results.
The second measurement stage implies a calculation of all measurement results in the
offline segment from the existing raw data. No new measurement data is acquired. By
repeating this second stage for different segments, you can obtain a complete set of
measurement results over the entire measurement length.
Reconfiguration of the measurement
To obtain consistent results in the second measurement stage, the raw data must still
correspond to the measurement settings. Avoid any reconfiguration that would require
a new measurement, if you wish to reuse your data in offline mode.
3.2.6
NB-IoT UL Signal Properties
This section describes the following selected topics related to NB-IoT UL signal proper-
ties.
Resources in Time and Frequency Domain
..........................................................207
.......................................................................................209
3.2.6.1
Resources in Time and Frequency Domain
The channel bandwidth for the NB-IoT uplink is 200 kHz. At both edges, 10 kHz are not
allocated (guard band). The remaining 180 kHz can be allocated to UEs.
General Description
深圳德标仪器
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