Measurement-computing PCI-DAS1602/16 Manuale Utente Scaricare il pdf (Pagina 20)

PCI-DAS1602/16 User's Guide Calibrating the PCI-DAS1602/16

19

Analog output calibration

The analog output circuits are calibrated for both gain and offset. Offset adjustments for the analog outputs are

made in the output buffer section. The tuning range of this adjustment allows for maximum DAC and output

buffer offsets. Gain calibration of the analog outputs is performed via DAC reference adjustments.

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

Ref

D/A

Gain

Adjust

Analog Out

Offset

Adjust

Trim DAC

Coarse

Trim DAC

Fine

Trim DAC

Coarse

Trim DAC

Fine

Figure 6. Analog output calibration

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 30 31

Commenti su questo manuale

Nessun commento