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viFindNext (findList, instrResourceString);
}
status = viOpen (defaultRM, instrResourceString, VI_NULL, VI_NULL, &instr);
if
(status<VI_SUCCESS)
{
printf ("Cannot open a session to the device %d.\n", i+1);
continue;
}
/* * At this point we now have a session open to the USB TMC instrument.
* We will now use the viPrintf function to send the device the string "*IDN?\n", *
asking for the device's identification. */
char
* cmmand ="*IDN?\n";
status = viPrintf (instr, cmmand);
if
(status<VI_SUCCESS)
{
printf ("Error writing to the device %d.\n", i+1);
status = viClose (instr);
continue;
}
/** Now we will attempt to read back a response from the device to
* the identification query that was sent. We will use the viScanf *
function to acquire the data.
* After the data has been read the response is displayed.*/
status = viScanf(instr, "%t", buffer);
(status<VI_SUCCESS)
{
printf ("Error reading a response from the device %d.\n", i+1);
}
else
{
printf ("\nDevice %d: %*s\n", i+1,retCount, buffer); }
Digital Oscilloscope Series
if
204
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