Measurement-computing PCI-DAS1602/12 Bedienungsanleitung PDF herunterladen (Seite 21)

PCI-DAS1602/12 User's Guide Calibrating the PCI-DAS1602/12

Analog output calibration

Analog output circuits are calibrated for offset and gain. Coarse and fine offset adjustments are made in the

output buffer section. The tuning range of these adjustments allows for maximum DAC and output buffer

offsets. Coarse and fine gain calibration is performed via adjustments to the DAC reference.

The analog output calibration system is shown in Figure 6. This circuit is duplicated for both DAC0 and DAC1.

Ref

DAC

Gain

Adjust

Analog Out

Offset

Adjust

Trim DAC

Coarse

Trim DAC

Fine

Trim DAC

Figure 6. Analog output calibration

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Measurement-computing PCI-DAS1602/12 Bedienungsanleitung Seite 21