Agilent Technologies InfiniiVision 7000A Series Programmer's Manual page 876

12
Programming Examples
876
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 OpenResourceManager()
{
int nViStatus;
nViStatus =
visa32.viOpenDefaultRM(out this.m_nResourceManager);
if (nViStatus < visa32.VI_SUCCESS)
throw new
ApplicationException("Failed to open Resource Manager");
}
private void OpenSession()
{
int nViStatus;
nViStatus = visa32.viOpen(this.m_nResourceManager,
this.m_strVisaAddress, visa32.VI_NO_LOCK,
visa32.VI_TMO_IMMEDIATE, out this.m_nSession);
CheckVisaStatus(nViStatus);
}
public void SetTimeoutSeconds(int nSeconds)
{
int nViStatus;
nViStatus = visa32.viSetAttribute(this.m_nSession,
visa32.VI_ATTR_TMO_VALUE, nSeconds * 1000);
CheckVisaStatus(nViStatus);
}
Agilent InfiniiVision 7000A Series Oscilloscopes Programmer's Guide