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LTE PRACH Measurement
R&S
®
CMW-KM5xx/-KS5xx
775
User Manual 1173.9628.02 ─ 16
●
For synchronization and proper decoding, some UE signal settings must be in
accordance with the measured signal; see
chapter 4.4.3, "Specifying Required
4.4.2 Specifying General and Common Measurement Settings
// *****************************************************************************
// System-Reset
// *****************************************************************************
*RST; *OPC?
*CLS; *OPC?
// *****************************************************************************
// Define signal routing and perform RF and analyzer settings:
// Carrier center frequency 1850 MHz, frequency offset 1 kHz, peak power 7 dBm,
// 5 dB user margin and 1 dB mixer level offset.
// *****************************************************************************
ROUTe:LTE:MEAS:SCENario:SALone RF1C, RX1
CONFigure:LTE:MEAS:RFSettings:EATTenuation 2
CONFigure:LTE:MEAS:RFSettings:FREQuency 1850E+6
CONFigure:LTE:MEAS:RFSettings:FOFFset 1000
CONFigure:LTE:MEAS:RFSettings:ENPower 7
CONFigure:LTE:MEAS:RFSettings:UMARgin 5
CONFigure:LTE:MEAS:RFSettings:MLOFfset 1
// *****************************************************************************
// Set duplex mode TDD and query the resulting frame structure type (T2).
// Specify channel bandwidth 1.4 MHz.
// *****************************************************************************
CONFigure:LTE:MEAS:DMODe TDD
CONFigure:LTE:MEAS:FSTRucture?
CONFigure:LTE:MEAS:CBANdwidth B014
4.4.3 Specifying Required PRACH Settings
// *****************************************************************************
// Specify required UE signal settings: PRACH configuration index 1,
// logical root sequence index 50, zero correlation zone config 3.
// *****************************************************************************
CONFigure:LTE:MEAS:PRACh:PCINdex 1
CONFigure:LTE:MEAS:PRACh:MODulation:LRSindex 50
CONFigure:LTE:MEAS:PRACh:MODulation:ZCZConfig 3
4.4.4 Specifying Additional Measurement-Specific Settings
// *****************************************************************************
// Define stop condition (stop on limit failure), statistic counts (20 cycles),
Programming
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