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LTE PRACH Measurement
R&S
®
CMW-KM5xx/-KS5xx
802
User Manual 1173.9628.02 ─ 16
It indicates the correlation between the ideal preamble sequence determined from the
parameter settings and the measured preamble sequence. A value of 1 corresponds to
perfect correlation. A value much smaller than 1 indicates that the searched preamble
sequence was not found.
Suffix:
<Number>
.
1..16
Number of the preamble for which the results shall be queried
Return values:
<Reliability>
<SeqCorrelation>
Range:
0 to 1
Example:
See
Performing Single-Shot Measurements
Usage:
Query only
Firmware/Software:
V2.1.20
Manual operation:
See
"Statistical Overviews and other Single Values"
4.5.3.10
EVM vs. Subcarrier Results (Traces)
The following commands return the EVM vs. subcarrier traces of the PRACH measure-
ment.
FETCh:LTE:MEAS<i>:PRACh:TRACe:EVM:CURRent?
FETCh:LTE:MEAS<i>:PRACh:TRACe:EVM:AVERage?
FETCh:LTE:MEAS<i>:PRACh:TRACe:EVM:MAXimum?
READ:LTE:MEAS<i>:PRACh:TRACe:EVM:CURRent?
READ:LTE:MEAS<i>:PRACh:TRACe:EVM:AVERage?
READ:LTE:MEAS<i>:PRACh:TRACe:EVM:MAXimum?
Return the values of the EVM vs. subcarrier traces. Each value is averaged over the
samples in one preamble subcarrier. The results of the current, average and maximum
traces can be retrieved.
See also
chapter 4.2.9.2, "Detailed Views: EVM, Magnitude Error, Phase Error"
Return values:
<Reliability>
<Results>
The number of results depends on the preamble format.
Format 0 to 3: 839 EVM values, format 4: 139 EVM values
Range:
0 % to 100 %
Default unit: %
Example:
See
Performing Single-Shot Measurements
Usage:
Query only
Firmware/Software:
V2.0.10
Command Reference
深圳德标仪器
135-1095-0799