Please have a look at the attached document. Here you'll find most NF variables...

Thank you very much!

Best Regards,
Shuanglong Xie

Thank Stb.
But I am still a little confused. Does the "file" in the commands fileread filewrite refer to the file that we can record in the E6x analyze software?

Here is the case. I actually connect the E62 with a motor device. When the device arrived at a certain point, I hope to measure the magnetic field intensity in x,y,z respectively and save it in txt file with the corresponding coordinator information. What am I supposed to do? Now I can only read the root mean square of the magnetic field with the help of the struct "Smeasurementvalue" and the readcmd. But this is not enough.

I appreciate your help. Thank you so much!

Best Regards,
Shuanglong Xie

You have to write an application that continuously reads data from the device and calculates a RMS. Examples are provided with the Programmers Guide.

Best Regards

Hi, Stb,

I have solved the previous problem. But new problem occurred.
while reading data from buffer, it would occasionally read the residual data that is from last sweep.
the code is as follow, where do I get wrong.

Cusbconnection *con = Cusbconnection::getconnection(0);
con->clearbuffer();
con->writeenvironment(SV_USBMEAS, 1);
con->writeenvironment(SV_USBSWPRST,1);
con->readenvironment(SV_STARTFREQ,startfreq);
con->clearbuffer();

while(i++<100)
{
con->readcmd(&y, UST_PHYFREQDAT,size);
con->readdata(&y, 1);

……
……;reading data and save and display.
……
}

con->writeenvironment(SV_USBMEAS, 0);

// close devices
Cusbconnection::closeall();
getch();

In most cases, it can read the right data in right order. But sometimes it may read the residual data.

any help would be greatly appreciated.

Best Regards,
Shuanglong Xie

Hello shuanglongxie,

just disregard the out of bound data and try to synchronize against the start frequency.