private void ConfigureSG() { transceiver.RfsgHandle.RF.PowerLevel = sgPowerLevel; // set IQ rate of the generator transceiver.RfsgHandle.Arb.IQRate = 1 / waveform.PrecisionTiming.SampleInterval.TotalSeconds; { // automatically offset the LO outside of the band // the Upconverter.CenterFrequency property will remain constant for each step in the configuration list double maxBandwidth = bandwidths.Max(); if (txStartFrequency > rxStopFrequency) { transceiver.RfsgHandle.RF.Upconverter.CenterFrequency = txStopFrequency + maxBandwidth; // inject to the right if the rx band is below the tx band } else if (rxStartFrequency > txStopFrequency) { transceiver.RfsgHandle.RF.Upconverter.CenterFrequency = txStartFrequency - maxBandwidth; // inject to the left if the rx band is above the tx band } else // if none of the above then there is some band overlap { // find the side that is easier to inject on double upperMargin = Math.Abs(rxStopFrequency - txStopFrequency); double lowerMargin = Math.Abs(rxStartFrequency - txStartFrequency); if (lowerMargin < upperMargin) { transceiver.RfsgHandle.RF.Upconverter.CenterFrequency = txStartFrequency - lowerMargin - maxBandwidth; } else // prefer high side injection if the upper and lower margins are equal { transceiver.RfsgHandle.RF.Upconverter.CenterFrequency = txStopFrequency + upperMargin + maxBandwidth; } } // the driver will throw an error if it is unable to satify the calculated downconverter center frequency } #if ni5644R { // comment out if using 5646R transceiver.RfsgHandle.RF.Upconverter.CenterFrequency = (txStartFrequency + txStopFrequency) / 2; } #endif { // set configuration list to loop through the carrier frequencies // transceiver.RfsgHandle.BasicConfigurationList.CheckIfConfigurationListExists(Band); // possible speed improvement can be made here. RfsgConfigurationListProperties[] configurationListProperties = new RfsgConfigurationListProperties[] { RfsgConfigurationListProperties.Frequency }; transceiver.RfsgHandle.BasicConfigurationList.CreateConfigurationList(band, configurationListProperties, true); if (soakTime > 0) { transceiver.RfsgHandle.BasicConfigurationList.CreateStep(true); transceiver.RfsgHandle.RF.Frequency = soakFrequency; } foreach (double frequency in txFrequencyRamp) { // create steps for sweep transceiver.RfsgHandle.BasicConfigurationList.CreateStep(true); transceiver.RfsgHandle.RF.Frequency = frequency; } } transceiver.ConditionalWriteWaveform(waveformName, waveform); transceiver.RfsgHandle.Arb.Scripting.WriteScript(BuildScript()); transceiver.RfsgHandle.Arb.Scripting.SelectedScriptName = band; transceiver.RfsgHandle.DeviceEvents.MarkerEvents[1].ExportedOutputTerminal = referenceTriggerLine; transceiver.RfsgHandle.Utility.Commit(); }
private void ConfigureSG() { transceiver.RfsgHandle.RF.PowerLevel = sgPowerLevel; transceiver.RfsgHandle.Triggers.ConfigurationListStepTrigger.DigitalEdge.Source = triggerLine; transceiver.RfsgHandle.RF.Upconverter.CenterFrequency = stopFrequency + bandwidth; // inject to the right of the sweep band RfsgConfigurationListProperties[] configurationListProperties = new RfsgConfigurationListProperties[] { RfsgConfigurationListProperties.Frequency }; transceiver.RfsgHandle.BasicConfigurationList.CreateConfigurationList("GeneratorSweep", configurationListProperties, true); foreach (double frequency in frequencyRamp) { transceiver.RfsgHandle.BasicConfigurationList.CreateStep(true); transceiver.RfsgHandle.RF.Frequency = frequency; } transceiver.RfsgHandle.Utility.Commit(); }