Keysight P9241, Руководство программиста SCPI

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1242 Keysight P9241/42/43A Oscilloscopes SCPI Programmer's Guide
38
Programming Examples
/* Read system setup. */
num_bytes = do_query_ieeeblock(":SYSTem:SETup?");
printf("Read setup string query (%d bytes).\n", num_bytes);
/* Write setup string to file. */
fp = fopen ("c:\\scope\\config\\setup.stp", "wb");
num_bytes = fwrite(ieeeblock_data, sizeof(unsigned char), num_bytes,
fp);
fclose (fp);
printf("Wrote setup string (%d bytes) to ", num_bytes);
printf("c:\\scope\\config\\setup.stp.\n");
/* Change settings with individual commands:
/* Set vertical scale and offset. */
do_command(":CHANnel1:SCALe 0.05");
do_query_string(":CHANnel1:SCALe?");
printf("Channel 1 vertical scale: %s\n", str_result);
do_command(":CHANnel1:OFFSet -1.5");
do_query_string(":CHANnel1:OFFSet?");
printf("Channel 1 offset: %s\n", str_result);
/* Set horizontal scale and offset. */
do_command(":TIMebase:SCALe 0.0002");
do_query_string(":TIMebase:SCALe?");
printf("Timebase scale: %s\n", str_result);
do_command(":TIMebase:POSition 0.0");
do_query_string(":TIMebase:POSition?");
printf("Timebase position: %s\n", str_result);
/* Set the acquisition type (NORMal, PEAK, AVERage, or HRESolution). *
/
do_command(":ACQuire:TYPE NORMal");
do_query_string(":ACQuire:TYPE?");
printf("Acquire type: %s\n", str_result);
/* Or, configure by loading a previously saved setup. */
/* Read setup string from file. */
fp = fopen ("c:\\scope\\config\\setup.stp", "rb");
num_bytes = fread (ieeeblock_data, sizeof(unsigned char),
IEEEBLOCK_SPACE, fp);
fclose (fp);
printf("Read setup string (%d bytes) from file ", num_bytes);
printf("c:\\scope\\config\\setup.stp.\n");
/* Restore setup string. */
num_bytes = do_command_ieeeblock(":SYSTem:SETup", num_bytes);
printf("Restored setup string (%d bytes).\n", num_bytes);
/* Capture an acquisition using :DIGitize. */
do_command(":DIGitize CHANnel1");
}