Keysight P9241, Руководство программиста SCPI

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1262 Keysight P9241/42/43A Oscilloscopes SCPI Programmer's Guide
38
Programming Examples
// Download the screen image.
// -----------------------------------------------------------
myScope.DoCommand(":HARDcopy:INKSaver OFF");
// Get the screen data.
nLength = myScope.DoQueryIEEEBlock(":DISPlay:DATA? PNG, COLor",
out ResultsArray);
// Store the screen data to a file.
strPath = "c:\\scope\\data\\screen.png";
FileStream fStream = File.Open(strPath, FileMode.Create);
fStream.Write(ResultsArray, 0, nLength);
fStream.Close();
Console.WriteLine("Screen image ({0} bytes) written to {1}",
nLength, strPath);
// Download waveform data.
// -----------------------------------------------------------
// Set the waveform points mode.
myScope.DoCommand(":WAVeform:POINts:MODE RAW");
Console.WriteLine("Waveform points mode: {0}",
myScope.DoQueryString(":WAVeform:POINts:MODE?"));
// Get the number of waveform points available.
myScope.DoCommand(":WAVeform:POINts 10240");
Console.WriteLine("Waveform points available: {0}",
myScope.DoQueryString(":WAVeform:POINts?"));
// Set the waveform source.
myScope.DoCommand(":WAVeform:SOURce CHANnel1");
Console.WriteLine("Waveform source: {0}",
myScope.DoQueryString(":WAVeform:SOURce?"));
// Choose the format of the data returned (WORD, BYTE, ASCII):
myScope.DoCommand(":WAVeform:FORMat BYTE");
Console.WriteLine("Waveform format: {0}",
myScope.DoQueryString(":WAVeform:FORMat?"));
// Display the waveform settings:
double[] fResultsArray;
fResultsArray = myScope.DoQueryNumbers(":WAVeform:PREamble?");
double fFormat = fResultsArray[0];
if (fFormat == 0.0)
{
Console.WriteLine("Waveform format: BYTE");
}
else if (fFormat == 1.0)
{
Console.WriteLine("Waveform format: WORD");
}
else if (fFormat == 2.0)
{
Console.WriteLine("Waveform format: ASCii");
}