NI 9144 User Guide and Specifications
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© National Instruments
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8
9
NI 9269 Calibration Data
The NI 9269 has four channels with a nominal range of ±10.7 V. Each channel has an associated
LSB weight, which is the number of volts per bit, and an offset, which is the number of volts per
bit measured when the inputs are grounded.
Note
LSB weight is referred to as Gain in the object dictionary.
The calibration data is stored in a U32 array, though each Offset field (subindex 1, 3, 5, and so
on) should be interpreted as a signed value.
Use the calibration coefficients with the following equation to generate corrected data:
where
Code
represents the code returned by the NI 9269
V
desired
represents the corrected current value
NI 93
8
1
The vendor configuration extensions for the NI 9381 are listed in Table 100.
Table 99.
NI 9269 Scan List Format
Coefficient
Representation
Units
LSB Weight
Unsigned
nV/LSB
Offset
Signed
nV
V
desired
Code
(
)
Code LSB
weight
×
nV
bits
---------
10
9
–
×
V
nV
-------
Offset nV
(
)
10
9
–
V
nV
-------
×
+
=
