Agilent Technologies FS2010 Manual de servicio descargar pdf (Pagina 373)

100

101

Agilent Signal Generators Programming Guide 365

Creating and Downloading User–Data Files

Save and Recall Instrument State Files

NOT appended to the block and END is not sent at the conclusion of the

write.*/

static public void WriteFileBlock(uint device, string fileName)

{

// Make sure that the file exists, otherwise sends a null block

if (File.Exists(fileName))

{

FileStream fs = new FileStream(fileName, FileMode.Open);

// Send the definite block header: #{lengthDataLength}{dataLength}

string fileSize = fs.Length.ToString();

string fileSizeLength = fileSize.Length.ToString();

WriteDevice(device, "#" + fileSizeLength + fileSize, false);

// Don't set END at the end of writes

VisaInterop.SetAttribute(device, VisaAttribute.SendEndEnable, 0);

// Write the file block to the signal generator

byte[] readBuf = new byte[TRANSFER_BLOCK_SIZE];

int numRead = 0;

uint retCount = 0;

while ((numRead = fs.Read(readBuf, 0, TRANSFER_BLOCK_SIZE)) != 0)

{

VisaInterop.Write(device, readBuf, (uint)numRead, out retCount);

}

// Go ahead and set END on writes

VisaInterop.SetAttribute(device, VisaAttribute.SendEndEnable, 1);

// Done with file

fs.Close();

}

else

{

// Send an empty definite block

WriteDevice(device, "#10", false);

}

// Declaration of VISA device access constants

public enum VisaAccessMode

{

NoLock = 0,

ExclusiveLock = 1,

SharedLock = 2,

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