Programming Examples | 9 |
*XREFERENCE : int32 - specifies the data point associated
* | with the |
*YINCREMENT : float32 - voltage difference between data points.
* | YORIGIN | : float32 - value of the voltage at center screen. |
*YREFERENCE : int32 - data point where
*/
printf("Reading preamble\n");
ipromptf(id, ":WAVEFORM:PREAMBLE?\n", "%,10lf\n", preamble); /*
printf("Preamble FORMAT: %e\n", preamble[0]);
printf("Preamble TYPE: %e\n", preamble[1]);
printf("Preamble POINTS: %e\n", preamble[2]);
printf("Preamble COUNT: %e\n", preamble[3]);
printf("Preamble XINCREMENT: %e\n", preamble[4]);
printf("Preamble XORIGIN: %e\n", preamble[5]);
printf("Preamble XREFERENCE: %e\n", preamble[6]);
printf("Preamble YINCREMENT: %e\n", preamble[7]);
printf("Preamble YORIGIN: %e\n", preamble[8]);
printf("Preamble YREFERENCE: %e\n", preamble[9]); */
/* QUERY_WAVE_DATA - Outputs waveform records to the controller
*over the interface that is stored in a buffer previously
*specified with the ":WAVEFORM:SOURCE" command.
*/
iprintf(id, ":WAVEFORM:DATA?\n"); /* Query waveform data. */
/* READ_WAVE_DATA - The wave data consists of two parts: the header,
*and the actual waveform data followed by an New Line (NL)
*character. The query data has the following format:
*
*<header><waveform data block><NL>
*Where:
*
*<header> = #800002048 (this is an example header)
*The "#8" may be stripped off of the header and the remaining
*numbers are the size, in bytes, of the waveform data block.
*The size can vary depending on the number of points acquired
*for the waveform which can be set using the ":WAVEFORM:POINTS"
*command. You may then read that number of bytes from the
*oscilloscope; then, read the following NL character to
*terminate the query.
*/
waveform_size = WAVE_DATA_SIZE; /* Read waveform data. */
iscanf(id, "%#b\n", &waveform_size, waveform_data); if ( waveform_size == WAVE_DATA_SIZE )
{
printf("Waveform data buffer full: "); printf("May not have received all points.\n");
}
else
{
printf("Reading waveform data... size = %d\n", waveform_size);
}
Agilent InfiniiVision 5000 Series Oscilloscopes Programmer's Reference | 557 |
