Measurement-computing DAQFlex User Guide Manuel d'utilisateur télécharger pdf (Page 23)

DAQFlex Software User's Guide Using DAQFlex Software

catch (Exception ex)

{

Console.WriteLine(ex.Message);

}

Try

Dim ScanData As Double(,)

Dim Names As String()

Dim Device As DaqDevice

Dim TimeOut As Integer

Names = DaqDeviceManager.GetDeviceNames(DeviceNameFormat.NameAndSerno)

Device = DaqDeviceManager.CreateDevice(Names(0))

Device.SendMessage("AOSCAN:LOWCHAN=0")

Device.SendMessage("AOSCAN:HIGHCHAN=0")

Device.SendMessage("AOSCAN:RATE=1000")

Device.SendMessage("AOSCAN:SAMPLES=5000")

Device.SendMessage("AOSCAN:BUFSIZE=5000")

int TimeOut = 0

Device.WriteScanData(ScanData, 5000, TimeOut)

Device.SendMessage("AOSCAN:START")

Catch ex As Exception

Console.WriteLine(ex.Message)

End Try

WriteScanData() parameters

 The first parameter to the WriteScanData method is the array containing the output scan data.

 The second parameter is the number of samples to write.

 The last parameter is a timeout value in milliseconds.

The WriteScanData method is synchronous, and will return when the number of samples specified have

been written to the device’s output buffer.

Each time the WriteScanData method is called, the data is written to an internal buffer starting at the

point after the last sample was written. When an output scan completes or is stopped, the write index is

reset to the beginning of the buffer.

Internal buffer

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 124 125

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Measurement-computing DAQFlex User Guide Manuel d'utilisateur Page 23