User`s guide

92 • Calibration
6.4 D/A Adjustment
6.4.1 Unipolar Analog Output
1. Set JP1 to select uni-polar. Connect the DVM (+) to CN3 pin-30 (DAOut)
and DVM (-) to A.GND.
2. Write the digital value 0 to the DAC. Trim VR2 to obtain a 0V reading on
the DVM
3. Write the digital value 4095 to the DAC. Trim VR1 to obtain a 10V reading
on the DVM.
6.4.2 Bipolar Analog Output
1. Set JP1 to select bipolar. Connect the DVM (+) to CN3 pin-30 (DAOut)
and DVM (-) to A.GND.
2. Write the digital value 2048 to the DAC. Trim VR2 to obtain a 0V reading
on the DVM.
3. Write the digital value 4095 to the DAC. Trim VR1 to obtain a +10V
reading on the DVM.
A calibration utility is included with the ADLINK CD, which is included with the
product package. A detailed calibration procedure and description can be
found in the utility. Users only need to run the software calibration utility and
follow the procedures.
Note: When you first receive the PCI-9112 card, calibration is NOT
necessary, the PCI-9111 has been fully calibrated before it is
shipped.