Agilent Technologies InfiniiVision 5000 Series - Page 742

742 Agilent InfiniiVision 5000 Series Oscilloscopes Programmer's Guide
12 Programming Examples
CheckVisaStatus(nViStatus)
End Sub
Private Function VisaGetResultString() As StringBuilder
Dim strResults As New StringBuilder(1000)
' Read return value string from the device.
Dim nViStatus As Integer
nViStatus = visa32.viScanf(m_nSession, "%1000t", strResults)
CheckVisaStatus(nViStatus)
Return strResults
End Function
Private Function VisaGetResultValue() As Double
Dim fResults As Double = 0
' Read return value string from the device.
Dim nViStatus As Integer
nViStatus = visa32.viScanf(m_nSession, "%lf", fResults)
CheckVisaStatus(nViStatus)
Return fResults
End Function
Private Function VisaGetResultValues() As Double()
Dim fResultsArray As Double()
fResultsArray = New Double(9) {}
' Read return value string from the device.
Dim nViStatus As Integer
nViStatus = visa32.viScanf(m_nSession, _
"%,10lf" & Chr(10) & "", fResultsArray)
CheckVisaStatus(nViStatus)
Return fResultsArray
End Function
Private Function VisaGetResultIEEEBlock(ByRef ResultsArray _
As Byte()) As Integer
' Results array, big enough to hold a PNG.
ResultsArray = New Byte(299999) {}
Dim length As Integer
' Number of bytes returned from instrument.
' Set the default number of bytes that will be contained in
' the ResultsArray to 300,000 (300kB).
length = 300000
' Read return value string from the device.
Dim nViStatus As Integer
nViStatus = visa32.viScanf(m_nSession, "%#b", length, _
ResultsArray)
CheckVisaStatus(nViStatus)
' Write and read buffers need to be flushed after IEEE block?
nViStatus = visa32.viFlush(m_nSession, visa32.VI_WRITE_BUF)
CheckVisaStatus(nViStatus)