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NB-IoT NPRACH Measurement
R&S
®
CMW-KM300/-KS300
352
User Manual 1178.5689.02 ─ 06
4.4.3
Specifying Required NPRACH Settings
// *****************************************************************************
// Specify required UE signal settings: NPRACH preamble format
// *****************************************************************************
CONFigure:NIOT:MEAS:PRACh:PFORmat 0
4.4.4
Specifying Measurement-Specific Settings
// *****************************************************************************
// Define stop condition (stop on limit failure), statistic counts (20 cycles),
// error handling, number of preambles, periodicity of preambles.
// *****************************************************************************
CONFigure:NIOT:MEAS:PRACh:SCONdition SLFail
CONFigure:NIOT:MEAS:PRACh:SCOunt:MODulation 20
CONFigure:NIOT:MEAS:PRACh:SCOunt:PDYNamics 20
CONFigure:NIOT:MEAS:PRACh:MOEXception ON
CONFigure:NIOT:MEAS:PRACh:TOUT 3600
CONFigure:NIOT:MEAS:PRACh:NOPReambles 10
CONFigure:NIOT:MEAS:PRACh:POPReambles MS160
// *****************************************************************************
// Specify EVM window length for all preamble formats.
// Specify the EVM window position for traces.
// *****************************************************************************
CONFigure:NIOT:MEAS:PRACh:MODulation:EWLength 120, 450
CONFigure:NIOT:MEAS:PRACh:MODulation:EWPosition HIGH
4.4.5
Configuring the Trigger System
// *****************************************************************************
// Set trigger source, slope, threshold, timeout and minimum trigger gap.
// *****************************************************************************
TRIGger:NIOT:MEAS:PRACh:SOURce 'IF Power'
TRIGger:NIOT:MEAS:PRACh:SLOPe FEDGe
TRIGger:NIOT:MEAS:PRACh:THReshold -30
TRIGger:NIOT:MEAS:PRACh:TOUT 1
TRIGger:NIOT:MEAS:PRACh:MGAP 0.00006
4.4.6
Specifying Limits
// *****************************************************************************
// Define modulation limits.
// *****************************************************************************
CONFigure:NIOT:MEAS:PRACh:LIMit:EVMagnitude 20, 40
CONFigure:NIOT:MEAS:PRACh:LIMit:MERRor 20, OFF
CONFigure:NIOT:MEAS:PRACh:LIMit:PERRor 20, OFF
Programming
深圳德标仪器
135-1095-0799