/// <summary>
/// This example illustrates how to use the RFmxWLAN APIs to configure the analyzer to perform an OFDMModAcc measurement.
/// You can use the Generator Basic example to generate the WLAN signal before running this example.
/// </summary>
static void Main(string[] args)
{
Console.WriteLine("\n----------------------- WLAN Analyzer Example -----------------------\n");
double centerFrequency = 3.5e9; //Hz
string resourceName = "5840";
string signalString = "Signal0";
string resultString = "Result0";
SA.RFmxInstr.InstrumentConfiguration saInstrConfig;
SA.CommonConfiguration saCommonConfig;
SA.AutoLevelConfiguration saAutolevelConfig;
SA.RFmxWLAN.StandardConfiguration wlanStandardConfig;
SA.RFmxWLAN.OFDMModAccConfiguration modaccConfig;
SA.RFmxWLAN.OFDMModAccResults modAccResults = new OFDMModAccResults();
//Analyzer Configuration
Console.WriteLine("Configure...\n");
saInstrConfig = SA.RFmxInstr.InstrumentConfiguration.GetDefault();
saCommonConfig = saCommonConfig = SA.CommonConfiguration.GetDefault();
saCommonConfig.ExternalAttenuation_dB = 0;
saCommonConfig.CenterFrequency_Hz = centerFrequency;
saCommonConfig.ReferenceLevel_dBm = 0.0;
saAutolevelConfig = SA.AutoLevelConfiguration.GetDefault();
saAutolevelConfig.Enabled = true;
saAutolevelConfig.MeasurementInterval_s = 10e-3;
wlanStandardConfig = SA.RFmxWLAN.StandardConfiguration.GetDefault();
wlanStandardConfig.ChannelBandwidth_Hz = 80.0e6;
wlanStandardConfig.Standard = RFmxWlanMXStandard.Standard802_11ax;
modaccConfig = SA.RFmxWLAN.OFDMModAccConfiguration.GetDefault();
#region Configure Analyzer
RFmxInstrMX instr = new RFmxInstrMX(resourceName, "");
SA.RFmxInstr.ConfigureInstrument(instr, saInstrConfig);
RFmxWlanMX wlan = instr.GetWlanSignalConfiguration(signalString);
SA.RFmxWLAN.ConfigureCommon(wlan, saCommonConfig);
SA.RFmxWLAN.ConfigureStandard(wlan, wlanStandardConfig);
#endregion
#region Measure
Console.WriteLine("Measure...\n");
ConfigureOFDMModAcc(wlan, modaccConfig);
RFmxWlanMXMeasurementTypes[] lteMeasurements = new RFmxWlanMXMeasurementTypes[1] {
RFmxWlanMXMeasurementTypes.OfdmModAcc
};
SA.RFmxWLAN.SelectAndInitiateMeasurements(wlan, lteMeasurements, saAutolevelConfig, false, "", resultString);
modAccResults = FetchOFDMModAcc(wlan, RFmxWlanMX.BuildResultString(resultString));
//print Results
Console.WriteLine("\n---------------------- ModAcc Results ---------------------\n");
Console.WriteLine("Composite RMS EVM (dB): {0:N}", modAccResults.CompositeRMSEVMMean_dB);
#endregion
wlan.Dispose();
instr.Close();
Console.WriteLine("Please press any key to close the application.\n");
Console.ReadKey();
}
public void Run()
{
#region Create Sessions
NIRfsg nIRfsg = new NIRfsg(resourceName, false, false);
RFmxInstrMX instr = new RFmxInstrMX(resourceName, "");
RFmxSpecAnMX specAn = instr.GetSpecAnSignalConfiguration(signalStringSpecan);
RFmxWlanMX wlan = instr.GetWlanSignalConfiguration(signalStringWlan);
#endregion
#region Configure Generation
ConfigureInstrument(nIRfsg, sgInstrConfig);
Waveform waveform = LoadWaveformFromTDMS(filePath);
DownloadWaveform(nIRfsg, waveform);
ConfigureBurstedGeneration(nIRfsg, waveform, paEnableTiming, paenConfig, out double period, out _);
nIRfsg.Initiate();
#endregion
#region Configure Analyzer
saAutolevelConfig.MeasurementInterval_s = period;
SA.RFmxInstr.ConfigureInstrument(instr, saInstrConfig);
SA.RFmxSpecAn.ConfigureCommon(specAn, saCommonConfig);
ampmConfigurationSpecAn.ReferenceWaveform = waveform;
ampmConfigurationSpecAn.DutAverageInputPower_dBm = sgInstrConfig.DutAverageInputPower_dBm;
SA.RFmxSpecAn.ConfigureAmpm(specAn, ampmConfigurationSpecAn);
SA.RFmxWLAN.ConfigureCommon(wlan, saCommonConfig);
SA.RFmxWLAN.ConfigureStandard(wlan, wlanStandardConfig);
SA.RFmxWLAN.ConfigureOFDMModAcc(wlan, modAccConfig);
SA.RFmxWLAN.ConfigureSEM(wlan, semConfig);
#endregion
#region Measure SpecAn
RFmxSpecAnMXMeasurementTypes[] specanMeasurements = new RFmxSpecAnMXMeasurementTypes[1] {
RFmxSpecAnMXMeasurementTypes.Ampm
};
SA.RFmxSpecAn.SelectAndInitiateMeasurements(specAn, specanMeasurements, saAutolevelConfig, waveform.SignalBandwidth_Hz, false, "", resultStringSpecan);
ampmResultsSpecAn = SA.RFmxSpecAn.FetchAmpm(specAn, RFmxSpecAnMX.BuildResultString(resultStringSpecan));
PrintAMPMResults();
#endregion
#region WLAN measure and results
RFmxWlanMXMeasurementTypes[] wlanMeasurements = new RFmxWlanMXMeasurementTypes[1] {
RFmxWlanMXMeasurementTypes.OfdmModAcc
};
SA.RFmxWLAN.SelectAndInitiateMeasurements(wlan, wlanMeasurements, saAutolevelConfig, false, "", resultStringWlan);
modAccResults = SA.RFmxWLAN.FetchOFDMModAcc(wlan, RFmxWlanMX.BuildResultString(resultStringWlan));
PrintModAccResults();
wlanMeasurements[0] = RFmxWlanMXMeasurementTypes.Sem;
SA.RFmxWLAN.SelectAndInitiateMeasurements(wlan, wlanMeasurements, saAutolevelConfig, false, "", resultStringWlan);
semResults = SA.RFmxWLAN.FetchSEM(wlan, RFmxWlanMX.BuildResultString(resultStringWlan));
PrintSemResults();
#endregion
AbortGeneration(nIRfsg);
CloseInstrument(nIRfsg);
wlan.Dispose();
wlan = null;
instr.Close();
instr = null;
}
public void Run()
{
#region Create Sessions
NIRfsg nIRfsg = new NIRfsg(resourceName, false, false);
RFmxInstrMX instr = new RFmxInstrMX(resourceName, "");
RFmxSpecAnMX specAn = instr.GetSpecAnSignalConfiguration(signalStringSpecan);
RFmxWlanMX wlan = instr.GetWlanSignalConfiguration(signalStringWlan);
#endregion
#region Configure Generation
ConfigureInstrument(nIRfsg, sgInstrConfig);
Waveform waveform = LoadWaveformFromTDMS(filePath);
// Apply CRF to the waveform if it is enabled
waveform = Methods.RFmxDPD.ConfigurePreDpdCrestFactorReduction(specAn, waveform, preDpdCrestFactorReductionConfig);
DownloadWaveform(nIRfsg, waveform);
ConfigureContinuousGeneration(nIRfsg, waveform);
var waveformLength_s = waveform.Data.SampleCount / waveform.SampleRate;
nIRfsg.Initiate();
#endregion
#region configure Analyzer
saAutolevelConfig.MeasurementInterval_s = waveform.BurstLength_s;
SA.RFmxInstr.ConfigureInstrument(instr, saInstrConfig);
SA.RFmxSpecAn.ConfigureCommon(specAn, saCommonConfig);
SA.RFmxWLAN.ConfigureCommon(wlan, saCommonConfig);
#endregion
#region Configure SpecAn
ampmConfigurationSpecAn.ReferenceWaveform = waveform;
ampmConfigurationSpecAn.DutAverageInputPower_dBm = sgInstrConfig.DutAverageInputPower_dBm;
SA.RFmxSpecAn.ConfigureAmpm(specAn, ampmConfigurationSpecAn);
#endregion
#region Configure WLAN Measurement
SA.RFmxWLAN.ConfigureStandard(wlan, wlanStandardConfig);
SA.RFmxWLAN.ConfigureOFDMModAcc(wlan, modAccConfig);
SA.RFmxWLAN.ConfigureSEM(wlan, semConfig);
#endregion
#region Configure and Measure DPD
if (EnableDpd)
{
Methods.RFmxDPD.ConfigureCommon(specAn, commonConfigurationDpd, waveform);
Methods.RFmxDPD.ConfigureMemoryPolynomial(specAn, memoryPolynomialConfiguration);
Methods.RFmxDPD.ConfigureApplyDpdCrestFactorReduction(specAn, applyDpdCrestFactorReductionConfig);
Console.WriteLine("\n------------------------ Perform DPD ----------------------\n");
specAn.SelectMeasurements("", RFmxSpecAnMXMeasurementTypes.Dpd, true);
Methods.RFmxDPD.PerformMemoryPolynomial(specAn, nIRfsg, memoryPolynomialConfiguration, waveform);
Console.WriteLine("\n------------------------ DPD done --------------------------\n");
}
#endregion
#region Measure SpecAn
RFmxSpecAnMXMeasurementTypes[] specanMeasurements = new RFmxSpecAnMXMeasurementTypes[1] {
RFmxSpecAnMXMeasurementTypes.Ampm
};
SA.RFmxSpecAn.SelectAndInitiateMeasurements(specAn, specanMeasurements, saAutolevelConfig, waveform.SignalBandwidth_Hz, false, "", resultStringSpecan);
ampmResultsSpecAn = SA.RFmxSpecAn.FetchAmpm(specAn, RFmxSpecAnMX.BuildResultString(resultStringSpecan));
PrintAMPMResults();
#endregion
#region measure and results
RFmxWlanMXMeasurementTypes[] wlanMeasurements = new RFmxWlanMXMeasurementTypes[1] {
RFmxWlanMXMeasurementTypes.OfdmModAcc
};
SA.RFmxWLAN.SelectAndInitiateMeasurements(wlan, wlanMeasurements, saAutolevelConfig, false, "", resultStringWlan);
modAccResults = SA.RFmxWLAN.FetchOFDMModAcc(wlan, RFmxWlanMX.BuildResultString(resultStringWlan));
PrintModAccResults();
wlanMeasurements[0] = RFmxWlanMXMeasurementTypes.Sem;
SA.RFmxWLAN.SelectAndInitiateMeasurements(wlan, wlanMeasurements, saAutolevelConfig, false, "", resultStringWlan);
semResults = SA.RFmxWLAN.FetchSEM(wlan, RFmxWlanMX.BuildResultString(resultStringWlan));
PrintSemResults();
#endregion
AbortGeneration(nIRfsg);
CloseInstrument(nIRfsg);
wlan.Dispose();
wlan = null;
instr.Close();
instr = null;
}
static void Main()
{
#region Configure Generation
string resourceName = "VST2";
string filePath = Path.GetFullPath(@"Support Files\80211a_20M_48Mbps.tdms");
NIRfsg nIRfsg = new NIRfsg(resourceName, false, false);
InstrumentConfiguration instrConfig = InstrumentConfiguration.GetDefault();
instrConfig.CarrierFrequency_Hz = 2.412e9;
ConfigureInstrument(nIRfsg, instrConfig);
Waveform waveform = LoadWaveformFromTDMS(filePath);
DownloadWaveform(nIRfsg, waveform);
WaveformTimingConfiguration timing = new WaveformTimingConfiguration
{
DutyCycle_Percent = 60,
PreBurstTime_s = 1e-9,
PostBurstTime_s = 1e-9,
BurstStartTriggerExport = "PXI_Trig0"
};
PAENConfiguration paenConfig = new PAENConfiguration
{
PAEnableMode = PAENMode.Dynamic,
PAEnableTriggerExportTerminal = "PFI0",
PAEnableTriggerMode = RfsgMarkerEventOutputBehaviour.Toggle
};
ConfigureBurstedGeneration(nIRfsg, waveform, timing, paenConfig, out double period, out _);
nIRfsg.Initiate();
#endregion
RFmxInstrMX instr = new RFmxInstrMX("VST2", "");
RFmxWlanMX wlan = instr.GetWlanSignalConfiguration();
instr.GetWlanSignalConfiguration();
CommonConfiguration commonConfiguration = CommonConfiguration.GetDefault();
commonConfiguration.CenterFrequency_Hz = 2.412e9;
AutoLevelConfiguration autoLevel = new AutoLevelConfiguration
{
AutoLevelMeasureTime_s = period,
AutoLevelReferenceLevel = true
};
SA.RFmxWLAN.ConfigureCommon(instr, wlan, commonConfiguration, autoLevel);
SignalConfiguration signal = SignalConfiguration.GetDefault();
signal.AutoDetectSignal = false;
signal.ChannelBandwidth_Hz = 20e6;
signal.Standard = RFmxWlanMXStandard.Standard802_11ag;
SA.RFmxWLAN.ConfigureSignal(wlan, signal);
TxPConfiguration txpConfig = new TxPConfiguration
{
AveragingCount = 10,
MaximumMeasurementInterval_s = waveform.BurstLength_s,
AveragingEnabled = RFmxWlanMXTxpAveragingEnabled.True
};
SA.RFmxWLAN.ConfigureTxP(wlan, txpConfig);
OFDMModAccConfiguration modAccConfig = OFDMModAccConfiguration.GetDefault();
modAccConfig.OptimizeDynamicRangeForEvmEnabled = RFmxWlanMXOfdmModAccOptimizeDynamicRangeForEvmEnabled.False;
modAccConfig.AveragingEnabled = RFmxWlanMXOfdmModAccAveragingEnabled.True;
SA.RFmxWLAN.ConfigureOFDMModAcc(wlan, modAccConfig);
TxPServoConfiguration servoConfig = TxPServoConfiguration.GetDefault();
servoConfig.TargetTxPPower_dBm = 0.5;
SA.RFmxWLAN.TxPServoPower(wlan, nIRfsg, servoConfig, autoLevel);
SEMConfiguration semConfig = SEMConfiguration.GetDefault();
SA.RFmxWLAN.ConfigureSEM(wlan, semConfig);
wlan.Initiate("", "");
TxPResults txpRes = SA.RFmxWLAN.FetchTxP(wlan);
OFDMModAccResults modAccResults = SA.RFmxWLAN.FetchOFDMModAcc(wlan);
SEMResults semResults = SA.RFmxWLAN.FetchSEM(wlan);
Console.WriteLine("TXP Avg Power: {0:N}", txpRes.AveragePowerMean_dBm);
Console.WriteLine("Composite RMS EVM (dB): {0:N}", modAccResults.CompositeRMSEVMMean_dB);
Console.WriteLine("\n----------Lower Offset Measurements----------\n");
for (int i = 0; i < semResults.LowerOffsetMargin_dB.Length; i++)
{
Console.WriteLine("Offset {0}", i);
Console.WriteLine("Measurement Status :{0}",
semResults.lowerOffsetMeasurementStatus[i]);
Console.WriteLine("Margin (dB) :{0}", semResults.LowerOffsetMargin_dB[i]);
Console.WriteLine("Margin Frequency (Hz) :{0}", semResults.LowerOffsetMarginFrequency_Hz[i]);
Console.WriteLine("Margin Absolute Power (dBm) :{0}\n", semResults.LowerOffsetMarginAbsolutePower_dBm[i]);
}
Console.WriteLine("\n----------Upper Offset Measurements----------\n");
for (int i = 0; i < semResults.UpperOffsetMargin_dB.Length; i++)
{
Console.WriteLine("Offset {0}", i);
Console.WriteLine("Measurement Status :{0}", semResults.upperOffsetMeasurementStatus[i]);
Console.WriteLine("Margin (dB) :{0}", semResults.UpperOffsetMargin_dB[i]);
Console.WriteLine("Margin Frequency (Hz) :{0}", semResults.UpperOffsetMarginFrequency_Hz[i]);
Console.WriteLine("Margin Absolute Power (dBm) :{0}\n", semResults.UpperOffsetMarginAbsolutePower_dBm[i]);
}
Console.WriteLine("\n--------------------\n\nPress any key to exit.");
Console.ReadKey();
wlan.Dispose();
instr.Close();
AbortGeneration(nIRfsg);
CloseInstrument(nIRfsg);
}
static void LoadAndRunMeasurements(string instrName, string inputPath, string outputPath)
{
inputPath = Path.GetFullPath(inputPath);
RFmxInstrMX instr = null;
NIRfsa rfsa = null;
IntPtr rfsaHandle;
try
{
Console.WriteLine($"Initializing RFmx session with instrument \"{instrName}\"...");
instr = new RFmxInstrMX(instrName, "");
Console.WriteLine($"Loading configuration from \"{Path.GetFileName(inputPath)}\"...");
instr.LoadAllConfigurations(inputPath, true);
instr.DangerousGetNIRfsaHandle(out rfsaHandle);
rfsa = new NIRfsa(rfsaHandle);
string[] signalNames = new string[0];
RFmxInstrMXPersonalities[] personalities = new RFmxInstrMXPersonalities[0];
Console.WriteLine("Configuration loaded successfully.");
instr.GetSignalConfigurationNames("", RFmxInstrMXPersonalities.All, ref signalNames, ref personalities);
for (int i = 0; i < signalNames.Length; i++)
{
Console.WriteLine("");
ConsoleKeyInfo info;
switch (personalities[i])
{
case RFmxInstrMXPersonalities.BT:
RFmxBTMX bt = instr.GetBTSignalConfiguration(signalNames[i]);
Console.WriteLine($"Enter 'y' to initiate acquisition for RFmx Bluetooth with signal \"{signalNames[i]}\"; any other key to skip.");
info = Console.ReadKey();
Console.WriteLine();
if (info.KeyChar == 'y')
{
bt.Initiate("", "");
bt.WaitForMeasurementComplete("", 10);
FetchAndLog(rfsa, personalities[i], signalNames[i], outputPath);
}
bt.Dispose();
break;
case RFmxInstrMXPersonalities.Wlan:
RFmxWlanMX wlan = instr.GetWlanSignalConfiguration(signalNames[i]);
Console.WriteLine($"Enter 'y' to initiate acquisition for RFmx WLAN with signal \"{signalNames[i]}\"; any other key to skip.");
info = Console.ReadKey();
Console.WriteLine();
if (info.KeyChar == 'y')
{
wlan.Initiate("", "");
wlan.WaitForMeasurementComplete("", 10);
FetchAndLog(rfsa, personalities[i], signalNames[i], outputPath);
}
wlan.Dispose();
break;
case RFmxInstrMXPersonalities.SpecAn:
RFmxSpecAnMX specAn = instr.GetSpecAnSignalConfiguration(signalNames[i]);
Console.WriteLine($"Enter 'y' to initiate acquisition for RFmx SpecAn with signal \"{signalNames[i]}\"; any other key to skip.");
info = Console.ReadKey();
Console.WriteLine();
if (info.KeyChar == 'y')
{
specAn.Initiate("", "");
specAn.WaitForMeasurementComplete("", 10);
FetchAndLog(rfsa, personalities[i], signalNames[i], outputPath);
}
specAn.Dispose();
break;
case RFmxInstrMXPersonalities.NR:
RFmxNRMX nr = instr.GetNRSignalConfiguration(signalNames[i]);
Console.WriteLine($"Enter 'y' to initiate acquisition for RFmx NR with signal \"{signalNames[i]}\"; any other key to skip.");
info = Console.ReadKey();
Console.WriteLine();
if (info.KeyChar == 'y')
{
nr.Initiate("", "");
nr.WaitForMeasurementComplete("", 10);
FetchAndLog(rfsa, personalities[i], signalNames[i], outputPath);
}
nr.Dispose();
break;
case RFmxInstrMXPersonalities.Lte:
RFmxLteMX lte = instr.GetLteSignalConfiguration(signalNames[i]);
Console.WriteLine($"Enter 'y' to initiate acquisition for RFmx LTE with signal \"{signalNames[i]}\"; any other key to skip.");
info = Console.ReadKey();
Console.WriteLine();
if (info.KeyChar == 'y')
{
lte.Initiate("", "");
lte.WaitForMeasurementComplete("", 10);
FetchAndLog(rfsa, personalities[i], signalNames[i], outputPath);
}
lte.Dispose();
break;
default:
throw new System.NotImplementedException($"The \"{personalities[i].ToString()}\" personality has not been implemented.");
}
}
Console.WriteLine("All measurements complete.");
}
catch (Exception ex)
{
Console.WriteLine("Exception occurred: " + ex.Message);
Console.WriteLine("Location: " + ex.StackTrace);
}
finally
{
if (instr != null)
{
instr.Dispose();
}
}
}
