LTE PRACH Measurement
R&S
®
CMW-KM5xx/-KS5xx
776
User Manual 1173.9628.02 ─ 16
// error handling and number of preambles. Enable high dynamic mode.
// *****************************************************************************
CONFigure:LTE:MEAS:PRACh:SCONdition SLFail
CONFigure:LTE:MEAS:PRACh:SCOunt:MODulation 20
CONFigure:LTE:MEAS:PRACh:SCOunt:PDYNamics 20
CONFigure:LTE:MEAS:PRACh:MOEXception ON
CONFigure:LTE:MEAS:PRACh:TOUT 3600
CONFigure:LTE:MEAS:PRACh:NOPReambles 10
CONFigure:LTE:MEAS:PRACh:POWer:HDMode ON
// *****************************************************************************
// Disable automatic detection of the PRACH frequency offset and
// specify it manually.
// *****************************************************************************
CONFigure:LTE:MEAS:PRACh:PFOFfset:AUTO OFF
CONFigure:LTE:MEAS:PRACh:PFOFfset 0
// *****************************************************************************
// Disable automatic detection of the preamble sequence index and
// specify it manually.
// *****************************************************************************
CONFigure:LTE:MEAS:PRACh:MODulation:SINDex:AUTO OFF
CONFigure:LTE:MEAS:PRACh:MODulation:SINDex 5
// *****************************************************************************
// Specify EVM window length for all preamble formats.
// Correct EVM window length for preamble format 2.
// Specify the EVM window position for traces.
// *****************************************************************************
CONFigure:LTE:MEAS:PRACh:MODulation:EWLength 1500,10000,3000,10000,200
CONFigure:LTE:MEAS:PRACh:MODulation:EWPosition HIGH
4.4.5 Configuring the Trigger System
// *****************************************************************************
// Set trigger source, slope, threshold, timeout and minimum trigger gap.
// *****************************************************************************
TRIGger:LTE:MEAS:PRACh:SOURce 'IF Power'
TRIGger:LTE:MEAS:PRACh:SLOPe FEDGe
TRIGger:LTE:MEAS:PRACh:THReshold -30
TRIGger:LTE:MEAS:PRACh:TOUT 1
TRIGger:LTE:MEAS:PRACh:MGAP 0.00006
4.4.6 Specifying Limits
// *****************************************************************************
// Define modulation limits.
// *****************************************************************************
Programming
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135-1095-0799