National Instruments NI 9229, NI 9239 - page 21

© National Instruments Corp. 21 NI 9229/9239
Accuracy, NI 9239
Input noise
NI 9229.......................................320 μVrms
NI 9239.......................................70 μVrms
Stability
Gain drift............................... .....±5 ppm/°C
Offset drift
NI 9229................................ ±150 μV/°C
NI 9239................................ ±26 μV/°C
Measurement Conditions
Percent of
Reading
(Gain Error)
Percent of
Range*
(Offset Error)
Calibrated max (–40 to 70 °C) ±0.13% ±0.06%
Calibrated typ (25 °C, ±5°C) ±0.03% ±0.008%
Uncalibrated max (–40 to 70 °C) ±1.4% ±0.70%
Uncalibrated typ (25 °C, ±5°C) ±0.3% ±0.11%
* Range equals 10.52 V