Signal Generators

[XUV]

Hi,

I have been working with VS 2010 for several month and I am still not very able in using it. I am writing a software that should control the set-up of an experiment by means of a DAQ USB 6251. I have a problem with the pulse train generator that I use as a trigger clock for managing two acquisition tasks that have to work simultaneously.

Here are the trigger task features:

triggertask.COChannels.CreatePulseChannelFrequency(counterComboBox.Text, _
"PulseTrain", COPulseFrequencyUnits.Hertz, idleState, 0.0, _
Convert.ToDouble(frequencyTextBox.Text), _
Convert.ToDouble(dutyCycleTextBox.Text))

triggertask.Triggers.StartTrigger.Type = StartTriggerType.DigitalEdge

triggertask.Triggers.StartTrigger.DigitalEdge.Edge = triggerEdge

triggertask.Triggers.StartTrigger.DigitalEdge.Source = triggerSourceTextBox.Text

triggertask.Timing.ConfigureImplicit(SampleQuantityMode.FiniteSamples, Samplesnumber.Text)

triggertask.Start()

As it should generate a finite number of samples I suppose that triggertask.isdone should change from false to true after the last pulse has been generated, but this doesn't happen. I need this function to start again the program once the first acquisition is complete.

Does anybody can help me?

Thanks