8
2.2.2 DAC Correction Formula for +/-10V Output Voltage Range
The basic formula for correcting bipolar DAC output value is:
Data = Value * ( 1 - Gain
corr
/ 131072 ) - Offset
corr
/ 4
Data is the (corrected) digital value that should be sent to the DAC, Value is the desired output value,
Gain
corr
and Offset
corr
are the correction factors from the ID PROM.
Gain
corr
and Offset
corr
correction factors are stored separately for each for the four DAC outputs.
Floating point arithmetic or scaled integer arithmetic is necessary to avoid rounding error while
computing above formula.
