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78 Calibration

5.2 Auto-calibration

Through the DAQ-/DAQe-/PXI-2016/2010/2006/2005 card auto-

calibration feature, the calibration software measures and corrects

almost all calibration errors without any external signal connec-

tions, reference voltage, or measurement devices.

The DAQ-/DAQe-/PXI-2016/2010/2006/2005 card comes with an

onboard calibration reference to ensure the accuracy of auto-cali-

bration. The reference voltage is measured in the production line

through a digital potentiometer and compensated in the software.

The calibration constant is memorized after this measurement. We

do not recommended adjustment of the onboard calibration refer-

ence except when an ultra-precision calibrator is available.

NOTES

• Warm the card up for at least 15 minutes before initiating auto-cal-

ibration.

• Remove the cable before auto-calibrating the card since the DA

outputs are changed during the process.

5.3 Saving Calibration Constants

When auto-calibration is completed, you can save the new calibra-

tion constants to the user-configurable banks in the EEPROM.

The date and the temperature when you ran auto-calibration is

saved with the calibration constants. You can store three sets of

calibration constants according to three different environments

and re-load the calibration constants later.

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Adlink DAQe-2006 Bedienungsanleitung Seite 90