/// <summary>Synchronizes the RF and envelope signal generators, and initiates generation.</summary> /// <param name="rfVsg">The open RFSG session corresponding to the RF signal generator.</param> /// <param name="envVsg">The open RFSG session corresponding to the envelope signal generator.</param> /// <param name="syncConfig">Specifies common settings used for synchronizing the RF and envelope signal generators.</param> public static void InitiateSynchronousGeneration(NIRfsg rfVsg, NIRfsg envVsg, SynchronizationConfiguration syncConfig) { TClock tclk = new TClock(new ITClockSynchronizableDevice[] { rfVsg, envVsg }); // The PXIe-5840 can only apply positive delays so we have to establish an inital delay of -RFDelayRange/2 for TCLK to handle negative shifts as well tclk.DevicesToSynchronize[0].SampleClockDelay = -syncConfig.RFDelayRange_s / 2.0; rfVsg.Arb.RelativeDelay = syncConfig.RFDelayRange_s / 2.0 + syncConfig.RFDelay_s; tclk.ConfigureForHomogeneousTriggers(); tclk.Synchronize(); tclk.Initiate(); }
private static void MapAndConfigTrigger(NIScope scopeSession, AITriggerConfiguration triggerConfiguration, ref TClock tClockSession) { //配置触发沿 ScopeTriggerSlope triggerSlope; switch (triggerConfiguration.TriggerEdge) { case Edge.Rising: triggerSlope = ScopeTriggerSlope.Positive; break; case Edge.Falling: triggerSlope = ScopeTriggerSlope.Negative; break; default: throw new Exception("触发沿 TriggerEdge 设置错误!"); } //设置触发源 ScopeTriggerSource triggerSource = triggerConfiguration.TriggerSource.ToString(); //设置触发模式 switch (triggerConfiguration.TriggerType) { case AITriggerType.Immediate: scopeSession.Trigger.Type = ScopeTriggerType.Immediate; scopeSession.Trigger.ConfigureTriggerImmediate(); break; case AITriggerType.DigitalTrigger: scopeSession.Trigger.Type = ScopeTriggerType.DigitalEdge; scopeSession.Trigger.ConfigureTriggerDigital(triggerSource, triggerSlope, PrecisionTimeSpan.Zero, new PrecisionTimeSpan(triggerConfiguration.Delay)); break; case AITriggerType.AnalogTrigger: scopeSession.Trigger.Type = ScopeTriggerType.Edge; scopeSession.Trigger.EdgeTrigger.Configure(triggerSource, 2.5, triggerSlope, ScopeTriggerCoupling.DC, PrecisionTimeSpan.Zero, new PrecisionTimeSpan(triggerConfiguration.Delay)); break; default: throw new Exception("触发模式 TriggerType 设置错误!"); } //如果不是非同步 //加入到TClock中 if (triggerConfiguration.MasterOrSlave != AITriggerMasterOrSlave.NonSync) { lock (TClockDevice.Lock) { if (TClockDevice.SyncDevices == null) { TClockDevice.SyncDevices = new List <NIScope>(); } TClockDevice.SyncDevices.Add(scopeSession); } } //如果是主卡,则将所有的 SynchronizableDevices 实例化出来,这样写也就决定了只能有一个 Master( NI 机箱可级联支持双 Master) //这一行必须是在所有需要同步的卡 scopeSession 设置完毕之后 if (triggerConfiguration.MasterOrSlave == AITriggerMasterOrSlave.Master) { TClockDevice.IsMasterReady = false; TClockDevice.IsSlaveCanAddIntoTDevice = true; //因为主卡可能会和从卡同时被 Arm,因此先等待所有从卡设备加入 TClockDevice Thread.Sleep(1000); TClockDevice.IsSlaveCanAddIntoTDevice = false; ITClockSynchronizableDevice[] scopeSynchronizableDevices = new ITClockSynchronizableDevice[TClockDevice.SyncDevices.Count]; for (int i = 0; i < TClockDevice.SyncDevices.Count; i++) { scopeSynchronizableDevices[i] = TClockDevice.SyncDevices[i]; } tClockSession = new TClock(scopeSynchronizableDevices); tClockSession.ConfigureForHomogeneousTriggers(); tClockSession.Synchronize(); } }