Agilent Technologies Infiniium 90000 Q-Series, Programmer'S Manual

Page: 1115 / 1186

Sample Programs
38
Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference 1115
/* Read screen image. */
num_values = do_query_ieeeblock(":DISPlay:DATA? PNG");
printf("Screen image bytes: %d\n", num_values);
/* Write screen image bytes to file. */
fp = fopen ("c:\\scope\\data\\screen.png", "wb");
num_values = fwrite(ieeeblock_data, sizeof(unsigned char), num_values,
fp);
fclose (fp);
printf("Wrote screen image (%d bytes) to ", num_values);
printf("c:\\scope\\data\\screen.png.\n");
/* Download waveform data.
* ------------------------------------------------------------- */
/* Get the waveform type. */
do_query_string(":WAVeform:TYPE?");
printf("Waveform type: %s\n", str_result);
/* Get the number of waveform points. */
do_query_string(":WAVeform:POINts?");
printf("Waveform points: %s\n", str_result);
/* Set the waveform source. */
do_command(":WAVeform:SOURce CHANnel1");
do_query_string(":WAVeform:SOURce?");
printf("Waveform source: %s\n", str_result);
/* Choose the format of the data returned: */
do_command(":WAVeform:FORMat WORD");
do_query_string(":WAVeform:FORMat?");
printf("Waveform format: %s\n", str_result);
/* Display the waveform settings: */
do_query_number(":WAVeform:XINCrement?");
x_increment = num_result;
printf("Waveform X increment: %e\n", x_increment);
do_query_number(":WAVeform:XORigin?");
x_origin = num_result;
printf("Waveform X origin: %e\n", x_origin);
do_query_number(":WAVeform:YINCrement?");
y_increment = num_result;
printf("Waveform Y increment: %e\n", y_increment);
do_query_number(":WAVeform:YORigin?");
y_origin = num_result;
printf("Waveform Y origin: %e\n", y_origin);
/* Read waveform data. */
num_values = do_query_ieeeblock_words(":WAVeform:DATA?");
printf("Number of data values: %d\n", num_values);
/* Open file for output. */
fp = fopen("c:\\scope\\data\\waveform_data.csv", "wb");