Measurement Specialties PCI-DAS64/M2/16 manual Dac

PCI-DAS64/M2/16 User's Guide Calibrating the PCI-DAS64/M2/16

The analog output circuits are calibrated for gain and offset. Gain calibration of the analog outputs is performed via DAC reference adjustments. Offset adjustments for the analog outputs are made in the output buffer section. The tuning range of this adjustment yields maximum DAC and output buffer offsets.

The calibration scheme for the analog out section is shown in Figure 5-3.This circuit is duplicated for both DAC0 and DAC1

DAC	Analog
	Out
Ref

	Gain		Offset
Trim DAC	Adjust	Trim DAC	Adjust
Coarse		Coarse
Trim DAC		Trim DAC
Fine		Fine

Figure 5-3. Analog out calibration

5-3