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∙
/*** VOLTAGE OUTPUT ADJUSTMENT | ***/ | |
for (i=1;i<num_chan+1;i++) |
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{ |
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result = 0; |
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while (result < 1) |
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{ |
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err=viPrintf(dac, “CAL%d:CONF:VOLT?\n”,i); | /* Configure for calibration */ | |
if(err < VI_SUCCESS) err_handler(dac, err); |
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err=viScanf(dac, “%d”, &result); |
| /* Enter integer returned */ |
/* returns a 1 when ready to calibrate */
if(err < VI_SUCCESS) err_handler(dac, err);
}
result = 1;
while (result !=0)
{
meas_volt=get_voltage ();/* Get the voltage measurement */ err=viPrintf(dac, “CAL%d:VAL:VOLT? %f\n”,i,meas_volt); /* Send the measurement*/ if(err < VI_SUCCESS) err_handler(dac, err);
err=viScanf(dac, “%d”, &result);
if(err < VI_SUCCESS) err_handler(dac, err); if (result == 5)
{
printf (“Calibration for channel %d aborted\n”,i); result = 0;
}
}
} |
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/*** CURRENT OUTPUT ADJUSTMENT | ***/ | |
/*** set the calibration resistor value | ***/ |
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result = 0; |
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while (result < 1) |
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{ |
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err=viPrintf(dac, “CAL:CONF:RES?\n”); | /* Configure for resistance calibration */ | |
if(err < VI_SUCCESS) err_handler(dac, err); |
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err=viScanf(dac, “%d”, &result); |
| /* Enter integer returned */ |
if(err < VI_SUCCESS) err_handler(dac, err); | /* returns a 1 when ready to calibrate */ | |
| ||
}
meas_res = get_resistance();
err=viPrintf(dac, “CAL:VAL:RES %f\n”,meas_res); /* Send the resistance value */ if(err < VI_SUCCESS) err_handler(dac, err);
/*** channel current output adjustment ***/
for (i=1;i<num_chan+1;i++)
{
result = 0;
while (result < 1)
{
err=viPrintf(dac, “CAL%d:CONF:CURR? \n”,i); /* Configure for calibration */ if(err < VI_SUCCESS) err_handler(dac, err);
163 Voltage/Current Output Adjustment | Appendix D |