Accuracy - Measurement Computing PCI-DAS6031 User Manual

PCI-DAS6031 & PCI-DAS6033 User's Guide

Accuracy

100 kS/s sampling rate, single channel operation and a 15-minute warm-up. Accuracies listed are for
measurements made following an internal calibration. They are valid for operational temperatures within ±1°C
of internal calibration temperature and ±10°C of factory calibration temperature. Calibrator test source high side
tied to Channel 0 High and low side tied to Channel 0 Low. Low-level ground is tied to Channel 0 Low at the
user connector.
Range
±10 V
±5 V
±2 V
±1 V
±500 mV
±200 mV
±100 mV
0 to 10 V
0 to 5 V
0 to 2 V
0 to 1 V
0 to 500 mV
0 to 200 mV
0 to 100 mV
Range % of
Reading
±10 V 0.0061
±5 V 0.0361
±2 V 0.0361
±1 V 0.0361
±500 mV 0.0361
±200 mV 0.0411
±100 mV 0.0461
0 to 10 V 0.0061
0 to 5 V 0.0361
0 to 2 V 0.0361
0 to 1 V 0.0361
0 to 500 mV 0.0361
0 to 200 mV 0.0411
0 to 100 mV 0.0461
1
Averaged measurements assume averaging of 100 single-channel readings.
Each PCI-DAS6031 and PCI-DAS6033 is tested at the factory to assure the board's overall error does not
exceed accuracy limits described in
Table 2. Absolute Accuracy
Absolute Accuracy
±3.76 LSB
±13.61 LSB
±13.70 LSB
±13.83 LSB
±14.09 LSB
±16.71 LSB
±19.99 LSB
±6.40 LSB
±26.11 LSB
±26.28 LSB
±26.54 LSB
±27.13 LSB
±32.11 LSB
±38.67 LSB
Table 3. Absolute Accuracy Components – All values are (±)
Offset Noise +Quantization (µV)
(µV)
Single Pt
479.2 634.1
243.6 317.1
102.2 126.8
55.1 63.4
31.6 36.8
17.4 22.5
12.7 19.6
326.6 417.8
167.3 208.9
71.7 83.6
39.9 41.8
23.9 28.1
14.4 19.6
11.2 18.1
Table 2 .
1
Averaged
54.9
27.5
11.0
5.5
3.2
2.0
1.8
36.6
18.3
7.3
3.7
2.5
1.8
1.7
6-2
Specifications
Temp Absolute
Drift Accuracy at
(%/ºC) FS (mV)
0.0001 1.147
0.0006 2.077
0.0006 0.836
0.0006 0.422
0.0006 0.215
0.0006 0.102
0.0006 0.061
0.0001 0.976
0.0006 1.992
0.0006 0.802
0.0006 0.405
0.0006 0.207
0.0006 0.098
0.0006 0.059