Agilent Technologies InfiniiVision 3000 DSO-X 3054A Manual de servicio descargar pdf (Pagina 925)

100

101

Programming Examples 37

Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide 925

{

double[] fResultsArray;

fResultsArray = new double[10];

// Read return value string from the device.

int nViStatus;

nViStatus = visa32.viScanf(m_nSession, "%,10lf\n",

fResultsArray);

CheckVisaStatus(nViStatus);

return fResultsArray;

}

private int VisaGetResultIEEEBlock(out byte[] ResultsArray)

{

// Results array, big enough to hold a PNG.

ResultsArray = new byte[300000];

int length; // Number of bytes returned from instrument.

// Set the default number of bytes that will be contained in

// the ResultsArray to 300,000 (300kB).

length = 300000;

// Read return value string from the device.

int nViStatus;

nViStatus = visa32.viScanf(m_nSession, "%#b", ref length,

ResultsArray);

CheckVisaStatus(nViStatus);

// Write and read buffers need to be flushed after IEEE block?

nViStatus = visa32.viFlush(m_nSession, visa32.VI_WRITE_BUF);

CheckVisaStatus(nViStatus);

nViStatus = visa32.viFlush(m_nSession, visa32.VI_READ_BUF);

CheckVisaStatus(nViStatus);

return length;

}

private void CheckInstrumentErrors(string strCommand)

{

// Check for instrument errors.

StringBuilder strInstrumentError = new StringBuilder(1000);

bool bFirstError = true;

do // While not "0,No error"

{

VisaSendCommandOrQuery(":SYSTem:ERRor?");

strInstrumentError = VisaGetResultString();

if (!strInstrumentError.ToString().StartsWith("+0,"))

{

if (bFirstError)

{

Console.WriteLine("ERROR(s) for command '{0}': ",

strCommand);

bFirstError = false;

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