Agilent Technologies InfiniiVision 2000 X-Series, Руководство программиста, Страница: 808 / 930

808 Agilent InfiniiVision 2000 X-Series Oscilloscopes Programmer's Guide
38
Programming Examples
Dim strErrors As String
myScope.WriteString query
DoQueryNumbers = myScope.ReadList
CheckInstrumentErrors
Exit Function
VisaComError:
MsgBox "VISA COM Error: " + CStr(Err.Number) + ", " + _
Err. ", " + _
Err.Description, vbExclamation, "VISA COM Error"
End
End Function
Private Function DoQueryIEEEBlock_UI1(query As String) As Variant
On Error GoTo VisaComError
myScope.WriteString query
DoQueryIEEEBlock_UI1 = myScope.ReadIEEEBlock(BinaryType_UI1)
CheckInstrumentErrors
Exit Function
VisaComError:
MsgBox "VISA COM Error: " + CStr(Err.Number) + ", " + _
Err. ", " + _
Err.Description, vbExclamation, "VISA COM Error"
End
End Function
Private Sub CheckInstrumentErrors()
On Error GoTo VisaComError
Dim strErrVal As String
Dim strOut As String
myScope.WriteString ":SYSTem:ERRor?" ' Query any errors data.
strErrVal = myScope.ReadString ' Read: Errnum,"Error String".
While Val(strErrVal) <> 0 ' End if find: 0,"No Error".
strOut = "INST Error: " + strErrVal
myScope.WriteString ":SYSTem:ERRor?" ' Request error message.
strErrVal = myScope.ReadString ' Read error message.
Wend
If Not strOut = "" Then
MsgBox strOut, vbExclamation, "INST Error Messages"
myScope.FlushWrite (False)
myScope.FlushRead
End If
Exit Sub