Agilent Technologies InfiniiVision 3000 X-Series, Руководство программиста

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Programming Examples
39
Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide 1143
' Output setup string to a file:
Dim strPath As String
strPath = "c:\scope\config\setup.dat"
If Len(Dir(strPath)) Then
Kill strPath ' Remove file if it exists.
End If
' Open file for output.
Dim hFile As Long
hFile = FreeFile
Open strPath For Binary Access Write Lock Write As hFile
Dim lngI As Long
For lngI = 0 To lngSetupStringSize - 1
Put hFile, , byteArray(lngI) ' Write data.
Next lngI
Close hFile ' Close file.
' Change settings with individual commands:
' -----------------------------------------------------------------
' Set vertical scale and offset.
DoCommand ":CHANnel1:SCALe 0.05"
Debug.Print "Channel 1 vertical scale: " + _
DoQueryString(":CHANnel1:SCALe?")
DoCommand ":CHANnel1:OFFSet -1.5"
Debug.Print "Channel 1 vertical offset: " + _
DoQueryString(":CHANnel1:OFFSet?")
' Set horizontal scale and position.
DoCommand ":TIMebase:SCALe 0.0002"
Debug.Print "Timebase scale: " + _
DoQueryString(":TIMebase:SCALe?")
DoCommand ":TIMebase:POSition 0.0"
Debug.Print "Timebase position: " + _
DoQueryString(":TIMebase:POSition?")
' Set the acquisition type (NORMal, PEAK, AVERage, or HRESolution).
DoCommand ":ACQuire:TYPE NORMal"
Debug.Print "Acquire type: " + _
DoQueryString(":ACQuire:TYPE?")
' Or, configure by loading a previously saved setup.
' -----------------------------------------------------------------
strPath = "c:\scope\config\setup.dat"
Open strPath For Binary Access Read As hFile ' Open file for input.
Dim lngSetupFileSize As Long
lngSetupFileSize = LOF(hFile) ' Length of file.
Get hFile, , byteArray ' Read data.
Close hFile ' Close file.
' Write learn string back to oscilloscope using ":SYSTem:SETup"
' command:
Dim lngRestored As Long
lngRestored = DoCommandIEEEBlock(":SYSTem:SETup", lngSetupFileSize)
Debug.Print "Setup bytes restored: " + CStr(lngRestored)