Agilent Technologies InfiniiVision 7000A Series Programmer's Manual page 884

12
Programming Examples
884
Dim fCount As Double = fResultsArray(3)
Console.WriteLine("Preamble COUNt: {0:e}", fCount)
Dim fXincrement As Double = fResultsArray(4)
Console.WriteLine("Preamble XINCrement: {0:e}", fXincrement)
Dim fXorigin As Double = fResultsArray(5)
Console.WriteLine("Preamble XORigin: {0:e}", fXorigin)
Dim fXreference As Double = fResultsArray(6)
Console.WriteLine("Preamble XREFerence: {0:e}", fXreference)
Dim fYincrement As Double = fResultsArray(7)
Console.WriteLine("Preamble YINCrement: {0:e}", fYincrement)
Dim fYorigin As Double = fResultsArray(8)
Console.WriteLine("Preamble YORigin: {0:e}", fYorigin)
Dim fYreference As Double = fResultsArray(9)
Console.WriteLine("Preamble YREFerence: {0:e}", fYreference)
' QUERY_WAVE_DATA - Outputs waveform records to the controller
' over the interface that is stored in a buffer previously
' specified with the ":WAVeform:SOURce" command.
' READ_WAVE_DATA - The wave data consists of two parts: the
' header, and the actual waveform data followed by a
' New Line (NL) character.
' format:
'
' <header><waveform data block><NL>
'
' Where:
'
' <header> = #800002048
'
' The "#8" may be stripped off of the header and the remaining
' numbers are the size, in bytes, of the waveform data block.
' The size can vary depending on the number of points acquired
' for the waveform which can be set using the
' ":WAVEFORM:POINTS" command.
' of bytes from the oscilloscope; then, read the following NL
' character to terminate the query.
' Read waveform data.
nLength = oscp.DoQueryIEEEBlock(":WAVeform:DATA?", ResultsArray)
Console.WriteLine("Read waveform data ({0} bytes).", nLength)
' Make some calculations from the preamble data.
Dim fVdiv As Double = 32 * fYincrement
Dim fOffset As Double = fYorigin
Dim fSdiv As Double = fPoints * fXincrement / 10
Dim fDelay As Double = (fPoints / 2) * fXincrement + fXorigin
' Print them out...
Console.WriteLine("Scope Settings for Channel 1:")
Console.WriteLine("Volts per Division = {0:f}", fVdiv)
Agilent InfiniiVision 7000A Series Oscilloscopes Programmer's Guide
The query data has the following
(this is an example header)
You may then read that number