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The calibration data is stored in a U32 array, though each offset field should 
be interpreted as a signed value.

Use the calibration coefficients with the following equation to generate 
corrected data:

Table 12.  NI 9203 Calibration Coefficients

LSB Weight

Unsigned

pA/LSB

Offset

Signed

pA

Table 13.  NI 9203 Calibration Equation Information

I

corrected

pA

Calibrated current

I

raw

bits

The raw code from the 
NI 9203

I

expected0mA

bits

Expected code at 0 mA. 
0 bits for 0–20 mA range. 
32768 bits for ±20 mA 
range

LSB

weight

pA/bit

Number of pA in one bit

I

offset

pA

Offset at 0 mA

(

)

–

∗ LSB

–

=

        pA                                bits                      pA/bit             pA

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