National Instruments Deterministic Ethernet Expansion Chassis NI 9144 - Manual (Page 41)

© National Instruments Corporation 41 NI 9144 User Guide and Specifications
The calibration data is stored in a U32 array, though each Offset field
should be interpreted as a signed value.
The NI 9219 returns calibrated 24-bit (padded to 32-bits) AI data for all
modes and ranges.
To convert raw data into engineering units use the following formula:
y = m*x + b
• b = offset based on range of the device (such as, –60 for ± 60 Volts
Voltage Measurement Range)
• m = Gain (Full-Range/ (2 24 )): (such as, 120/(2 24 ) for ± 60 Volts Voltage
Measurement Range)
14 3-Wire RTD Pt1000
15 Pt100
16 Quarter-Bridge 350
Ω
17 120
Ω
18 Half-Bridge ±500 mV/V
19 Reserved —
20 Full-Bridge ±62.5 mV/V
21 ±7.8 mV/V
Table 35. NI 9219 Calibration Data
Coefficient Representation
LSB Weight Unsigned
Offset Signed
Table 34. NI 9219 Channel Calibration (Continued)
Entry
Number Mode Range