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83 Appendix D
D.1 VR Assignment
The six variable resistors (VRs) on the PCI-1718HDU/HGU board help
you make accurate adjustment on all A/D and D/A channels. See the fig-
ure in Appendix B for help finding the VRs. The following list shows the
function of each VR:
Figure D.1: PCI-1718 VR Assignment
VR Function
VR1 A/D unipolar offset
VR2 A/D full scale
VR3 A/D bipolar offset
VR4 PGA offset
VR5 D/A full scale
VR6 D/A offset