NB-IoT Multi-Evaluation Measurement
R&S
®
CMW-KM300/-KS300
235
User Manual 1178.5689.02 ─ 06
Freq. Sync. Range
Specifies the frequency synchronization range.
High
The frequency sync. range is
±
1.8 kHz for subcarrier spacing
3.75
kHz and
±
7 kHz for subcarrier spacing 15 kHz.
Low
±
0.2 kHz for subcarrier spacing 3.75 kHz and
±
0.8 kHz for subcarrier
spacing 15 kHz. Use this value when the high frequency synchroniza-
tion range cannot be achieved or is not required.
Remote command:
CONFigure:NIOT:MEAS<i>:MEValuation:FSYRange
Modulation Scheme < Modulation
Selects the used modulation scheme. Adjust this value to the measured signal.
The allowed values depend on the configured NPUSCH format and on the number of
allocated subcarriers, see
Chapter 3.2.6.2, "Resource Unit Allocation"
Configure the resource allocation before configuring this setting.
In the standalone (SA) scenario, this parameter is controlled by the measurement. In
the combined signal path (CSP) scenario, it is controlled by the signaling application.
Remote command:
CONFigure:NIOT:MEAS<i>:MEValuation:MODulation:MSCHeme
(SA)
See
on page 232 for CSP.
Statistic Count
Defines the number of measurement intervals per measurement cycle.
Scope of the individual statistic counts:
●
Modulation:
Used by the views EVM, magnitude error, phase error, inband emissions, I/Q dia-
gram and TX measurement.
One interval comprises one slot.
●
Emission mask:
Spectrum emission mask, one interval comprises one slot.
●
ACLR:
Spectrum ACLR, one interval comprises one slot.
●
Power:
Power dynamics, one interval comprises one complete diagram.
Power monitor, one interval comprises the number of slots specified via parameter
The measurement provides independent statistic counts for different results. In single-
shot mode, a measurement with a completed statistic count is stopped, even if another
measurement with an incomplete statistic count is still running.
Remote command:
CONFigure:NIOT:MEAS<i>:MEValuation:SCOunt:MODulation
CONFigure:NIOT:MEAS<i>:MEValuation:SCOunt:SPECtrum:SEMask
CONFigure:NIOT:MEAS<i>:MEValuation:SCOunt:SPECtrum:ACLR
CONFigure:NIOT:MEAS<i>:MEValuation:SCOunt:POWer
GUI Reference
深圳德标仪器
135-1095-0799