StandardDev

SCPI Commands :

READ:WLAN:MEASurement<Instance>:MEValuation:MODulation:SDEViation
FETCh:WLAN:MEASurement<Instance>:MEValuation:MODulation:SDEViation
CALCulate:WLAN:MEASurement<Instance>:MEValuation:MODulation:SDEViation
class StandardDevCls[source]

StandardDev commands group definition. 3 total commands, 0 Subgroups, 3 group commands

class CalculateStruct[source]

Response structure. Fields:

  • Reliability: int: ‘Reliability indicator’

  • Out_Of_Tol: enums.ResultStatus2: Out of tolerance result, i.e. the percentage of measurement intervals of the statistic count for modulation measurements exceeding the specified modulation limits.

  • Mcs_Index: enums.ResultStatus2: Modulation and coding scheme index

  • Mod_Type: enums.ResultStatus2: No parameter help available

  • Payload_Sym: enums.ResultStatus2: Number of OFDM symbols in the payload of the measured burst

  • Measured_Sym: enums.ResultStatus2: Number of measured payload OFDM symbols

  • Payload_Bytes: enums.ResultStatus2: Number of bytes in the payload of the measured burst.

  • Guard_Interval: enums.ResultStatus2: SHORt, LONG: short or long guard interval (up to 802.11ac) GI08, GI16, GI32: 0.8 μs, 1.6 μs, and 3.2 μs guard interval durations (for 802.11ax)

  • Nof_Ss: enums.ResultStatus2: Number of spatial streams

  • No_Of_Sts: enums.ResultStatus2: Number of space-time streams

  • Burst_Rate: enums.ResultStatus2: If a modulation filter is used, the burst rate indicates the share of bursts of the selected modulation format in the bursts received. Otherwise, it returns 1.

  • Power_Backoff: enums.ResultStatus2: Minimum distance of signal power to reference level since the start of the measurement.

  • Burst_Power: enums.ResultStatus2: RMS power of the measured burst

  • Peak_Power: enums.ResultStatus2: Peak power of the measured burst

  • Crest_Factor: enums.ResultStatus2: No parameter help available

  • Evm_All_Carr: enums.ResultStatus2: EVM for all carriers

  • Evm_Data_Carr: enums.ResultStatus2: EVM for data carriers

  • Evm_Pilot_Carr: enums.ResultStatus2: EVM for pilot carriers

  • Freq_Error: enums.ResultStatus2: Center frequency error

  • Clock_Error: enums.ResultStatus2: Symbol clock error

  • Iq_Offset: enums.ResultStatus2: No parameter help available

  • Dc_Power: enums.ResultStatus2: Power of the DC subcarriers

  • Gain_Imbalance: enums.ResultStatus2: Gain imbalance cannot be calculated if the spectrum is not symmetrical, e.g. for HE_TB and HE_MU.

  • Quad_Error: enums.ResultStatus2: Quadrature error cannot be calculated if the spectrum is not symmetrical, e.g. for HE_TB and HE_MU.

  • Ltf_Power: enums.ResultStatus2: Power of long training fields (LTF) portion

  • Data_Power: enums.ResultStatus2: Power of data portion

  • Preamble_Power: enums.ResultStatus2: No parameter help available

class ResultData[source]

Response structure. Fields:

  • Reliability: int: ‘Reliability indicator’

  • Out_Of_Tol: float: Out of tolerance result, i.e. the percentage of measurement intervals of the statistic count for modulation measurements exceeding the specified modulation limits.

  • Mcs_Index: int: Modulation and coding scheme index

  • Mod_Type: enums.ModulationTypeD: No parameter help available

  • Payload_Sym: int: Number of OFDM symbols in the payload of the measured burst

  • Measured_Sym: int: Number of measured payload OFDM symbols

  • Payload_Bytes: int: Number of bytes in the payload of the measured burst.

  • Guard_Interval: enums.GuardInterval: SHORt, LONG: short or long guard interval (up to 802.11ac) GI08, GI16, GI32: 0.8 μs, 1.6 μs, and 3.2 μs guard interval durations (for 802.11ax)

  • Nof_Ss: int: Number of spatial streams

  • No_Of_Sts: int: Number of space-time streams

  • Burst_Rate: float: If a modulation filter is used, the burst rate indicates the share of bursts of the selected modulation format in the bursts received. Otherwise, it returns 1.

  • Power_Backoff: float: Minimum distance of signal power to reference level since the start of the measurement.

  • Burst_Power: float: RMS power of the measured burst

  • Peak_Power: float: Peak power of the measured burst

  • Crest_Factor: float: No parameter help available

  • Evm_All_Carr: float: EVM for all carriers

  • Evm_Data_Carr: float: EVM for data carriers

  • Evm_Pilot_Carr: float: EVM for pilot carriers

  • Freq_Error: float: Center frequency error

  • Clock_Error: float: Symbol clock error

  • Iq_Offset: float: No parameter help available

  • Dc_Power: float: Power of the DC subcarriers

  • Gain_Imbalance: float: Gain imbalance cannot be calculated if the spectrum is not symmetrical, e.g. for HE_TB and HE_MU.

  • Quad_Error: float: Quadrature error cannot be calculated if the spectrum is not symmetrical, e.g. for HE_TB and HE_MU.

  • Ltf_Power: float: Power of long training fields (LTF) portion

  • Data_Power: float: Power of data portion

  • Preamble_Power: float: No parameter help available

calculate() → CalculateStruct[source]
# SCPI: CALCulate:WLAN:MEASurement<Instance>:MEValuation:MODulation:SDEViation
value: CalculateStruct = driver.wlanMeas.multiEval.modulation.standardDev.calculate()

Return the single value results for OFDM SISO measurements. For MIMO measurements, the stream/antenna-independent values are returned. The values described below are returned by FETCh and READ commands. CALCulate commands return limit check results instead, one value for each result listed below.

return:

structure: for return value, see the help for CalculateStruct structure arguments.

fetch() → ResultData[source]
# SCPI: FETCh:WLAN:MEASurement<Instance>:MEValuation:MODulation:SDEViation
value: ResultData = driver.wlanMeas.multiEval.modulation.standardDev.fetch()

Return the single value results for OFDM SISO measurements. For MIMO measurements, the stream/antenna-independent values are returned. The values described below are returned by FETCh and READ commands. CALCulate commands return limit check results instead, one value for each result listed below.

return:

structure: for return value, see the help for ResultData structure arguments.

read() → ResultData[source]
# SCPI: READ:WLAN:MEASurement<Instance>:MEValuation:MODulation:SDEViation
value: ResultData = driver.wlanMeas.multiEval.modulation.standardDev.read()

Return the single value results for OFDM SISO measurements. For MIMO measurements, the stream/antenna-independent values are returned. The values described below are returned by FETCh and READ commands. CALCulate commands return limit check results instead, one value for each result listed below.

return:

structure: for return value, see the help for ResultData structure arguments.