Agilent Technologies Infiniium 90000 Q-Series, Programmer'S Manual

Page: 1077 / 1186

Sample Programs
38
Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference 1077
If (err <> VI_SUCCESS) Then HandleVISAError vi
err = viVScanf(vi, "%t", strErrVal) ' Read: Errnum,"Error String".
If (err <> VI_SUCCESS) Then HandleVISAError vi
While Val(strErrVal) <> 0 ' End if find: 0,"No Error".
strOut = "INST Error: " + strErrVal
err = viVPrintf(vi, ":SYSTem:ERRor? STRing" + vbLf, 0) ' Request err
or.
If (err <> VI_SUCCESS) Then HandleVISAError vi
err = viVScanf(vi, "%t", strErrVal) ' Read error message.
If (err <> VI_SUCCESS) Then HandleVISAError vi
Wend
If Not strOut = "" Then
MsgBox strOut, vbExclamation, "INST Error Messages"
err = viFlush(vi, VI_READ_BUF)
If (err <> VI_SUCCESS) Then HandleVISAError vi
err = viFlush(vi, VI_WRITE_BUF)
If (err <> VI_SUCCESS) Then HandleVISAError vi
End If
Exit Sub
ErrorHandler:
MsgBox "*** Error : " + Error, vbExclamation
End
End Sub
Private Sub HandleVISAError(session As Long)
Dim strVisaErr As String * 200
Call viStatusDesc(session, err, strVisaErr)
MsgBox "*** VISA Error : " + strVisaErr, vbExclamation
' If the error is not a warning, close the session.
If err < VI_SUCCESS Then
If session <> 0 Then Call viClose(session)
End
End If
End Sub