Measurement-computing USB-2416-4AO Manual do Utilizador descarregar pdf (Página 34)

USB-2416-4AO User's Guide Specifications

Range A/D

data

rate

Gain error

(% of

reading)

Offset

error

INL

error (%

range)

Absolute

accuracy

Gain

temperature

coefficient (%

reading/°C)

Offset

temperature

coefficient

(µV/°C)

60 S/s 0.035 6 µV 0.0009 33.866 µV 0.0006 1

50 S/s 0.035 6 µV 0.0009 34.026 µV 0.0006 1

25 S/s 0.035 6 µV 0.0009 33.933 µV 0.0006 1

10 S/s 0.035 6 µV 0.0009 33.937 µV 0.0006 1

5 S/s 0.035 6 µV 0.0009 33.969 µV 0.0006 1

2.5 S/s 0.035 6 µV 0.0009 33.934 µV 0.0006 1

Input bandwidth

Table 13. input bandwidth

A/D data rate -3 db Bandwidth (Hz)

3750 S/s

1615

2000 S/s

878

1000 S/s

441

500 S/s

221

100 S/s

44.2

60 S/s

26.5

50 S/s

22.1

25 S/s

11.1

10 S/s

4.42

5 S/s

2.21

2.5 S/s

1.1

Noise performance

For the peak-to-peak noise distribution test, a differential input channel is connected to GND at the input

terminal block, and 50,000 samples are acquired at the maximum rate available at each setting.

Table 14. Peak-to-peak noise performance specifications (µV)

A/D data rate

Range

3750 S/s 2000 S/s 1000 S/s 500 S/s 100 S/s 60 S/s 50 S/s 25 S/s 10 S/s 5 S/s 2.5 S/s

±20 V

230.31 186.92 126.84 100.14 57.22 57.22 49.59 47.58 23.84 23.84 14.31

±10 V

126.84 100.14 71.76 45.06 30.52 30.52 26.70 19.07 11.92 9.54 9.54

±5 V

56.74 47.56 34.21 25.87 16.21 14.31 14.31 14.30 5.96 4.77 4.77

±2.5 V

32.96 28.79 17.94 14.19 7.51 7.09 7.09 5.72 3.81 2.86 2.38

±1.25 V

18.57 17.52 13.83 9.30 5.48 5.48 5.01 3.81 3.34 3.34 2.86

±0.625 V

18.88 16.58 8.45 7.41 5.32 4.80 4.38 3.86 2.50 2.61 1.98

±0.3125 V

15.33 14.76 8.19 6.94 4.75 4.69 4.49 3.70 3.34 2.56 2.45

±0.15625 V

13.28 16.84 7.47 6.61 5.70 4.48 4.48 4.24 2.66 3.07 2.29

±0.078125 V

13.47 15.02 9.17 6.88 4.28 4.16 4.00 3.57 2.28 2.13 2.40

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