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LTE Multi Evaluation Measurement
R&S
®
CMW-KM5xx/-KS5xx
656
User Manual 1173.9628.02 ─ 16
3.5.3.16
EVM Results (Traces)
The following commands return the EVM vs SC-FDMA symbol and EVM vs subcarrier
results of the multi evaluation measurement.
FETCh:LTE:MEAS<i>:MEValuation:EVMagnitude:CURRent?
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FETCh:LTE:MEAS<i>:MEValuation:EVMagnitude:AVERage?
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FETCh:LTE:MEAS<i>:MEValuation:EVMagnitude:MAXimum?
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READ:LTE:MEAS<i>:MEValuation:EVMagnitude:CURRent?
..............................................656
READ:LTE:MEAS<i>:MEValuation:EVMagnitude:AVERage?
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READ:LTE:MEAS<i>:MEValuation:EVMagnitude:MAXimum?
.............................................656
FETCh:LTE:MEAS<i>:MEValuation:TRACe:EVMC?
..........................................................656
READ:LTE:MEAS<i>:MEValuation:TRACe:EVMC?
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FETCh:LTE:MEAS<i>:MEValuation:EVMagnitude:CURRent?
FETCh:LTE:MEAS<i>:MEValuation:EVMagnitude:AVERage?
FETCh:LTE:MEAS<i>:MEValuation:EVMagnitude:MAXimum?
READ:LTE:MEAS<i>:MEValuation:EVMagnitude:CURRent?
READ:LTE:MEAS<i>:MEValuation:EVMagnitude:AVERage?
READ:LTE:MEAS<i>:MEValuation:EVMagnitude:MAXimum?
Returns the values of the EVM bar graphs for the SC-FDMA symbols in the measured
slot. The results of the current, average and maximum bar graphs can be retrieved.
See also
chapter 3.2.6.2, "Detailed Views: EVM, Magnitude Error, Phase Error"
Return values:
<Reliability>
<EVMlow0>
<EVMhigh0> ...
<EVMlow5/6>
<EVMhigh5/6>
EVM values, low and high EVM window position.
Normal cyclic prefix: values for SC-FDMA symbol 0 to 6, includ-
ing the reference symbol as symbol number 3.
Extended cyclic prefix: values for SC-FDMA symbol 0 to 5,
including the reference symbol as symbol number 2.
Range:
0 % to 100 %
Default unit: %
Example:
See
Performing Single-Shot Measurements
Usage:
Query only
Firmware/Software:
V1.0.10.1
FETCh:LTE:MEAS<i>:MEValuation:TRACe:EVMC?
READ:LTE:MEAS<i>:MEValuation:TRACe:EVMC?
Returns the values of the EVM vs subcarrier trace. See also
Views: EVM, Magnitude Error, Phase Error"
The number of results n equals 12 times the number of resource blocks, which
depends on the channel bandwidth, see
chapter 3.2.4.1, "Resources in Time and Fre-
Command Reference
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