Manual Number: 00650-010-6
Page 17
Chapter 7: Calibration
Periodic calibration of the AOBx/16 cards are recommended if it is used in extreme environmental
conditions. The card uses very stable components but vibration, or high-low temperature cycles
might result in slight analog output errors.
Factory calibration and periodic calibration of the card includes adjustment of the internal refer-
ence voltage unless you are using an external reference voltage.
The suggested sequence for calibration is:
a.
Set base address for the card
b. Set range and polarity for each channel
c.
Adjust 5V Reference Voltage
d. Adjust Unipolar zero on each channel
e.
Adjust Unipolar full scale of each channel
f.
Adjust Bipolar zeroes of each channel
g. Check Bipolar negative full scale of each channel
h. Check Bipolar zero of each channel
To calibrate the card, run the setup program and follow the screen prompts. No attempt at calibra-
tion should be made in noisy locations or with a noisy calibration setup.
Each DAC output is available between the Analog Ground Pins (located on each end along the top
edge of the card) and the Channel Test Point Pins located between each DAC channel’s set of
calibration potentiometers.
Note:
After changing a channel’s voltage range or polarity, the channel may require recalibration
for best accuracy.
Summary of Contents for AOB8/16
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