Measurement-computing USB-2408 Series Manuel d'utilisateur télécharger pdf (Page 24)

USB-2408 Series User's Guide Specifications

Input bandwidth

Table 6. 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 AGND at the input

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

Table 7. 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

±10 V

126.84

100.14

71.76

45.06

30.52

26.70

19.07

11.92

9.54

±5 V

56.74

47.56

34.21

25.87

16.21

14.31

14.30

5.96

4.77

±2.5 V

32.96

28.79

17.94

14.19

7.51

7.09

5.72

3.81

4.00

±1.25 V

18.57

17.52

13.83

9.30

5.48

5.01

3.81

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

4.24

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

Table 8. RMS noise performance specifications (µVRMS)

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

±10 V

19.22

15.17

10.87

6.83

4.62

4.05

2.89

1.81

1.44

±5 V

8.60

7.21

5.18

3.92

2.46

2.17

2.16

0.90

0.72

±2.5 V

4.99

4.36

2.72

2.15

1.14

1.07

0.87

0.58

0.60

±1.25 V

2.81

2.66

2.10

1.41

0.83

0.76

0.58

0.51

0.43

±0.625 V

2.86

2.51

1.28

1.12

0.81

0.73

0.66

0.58

0.38

0.40

0.30

±0.3125 V

2.32

2.24

1.24

1.05

0.72

0.71

0.68

0.56

0.51

0.39

0.37

±0.15625 V

2.01

2.55

1.13

1.00

0.86

0.68

0.64

0.40

0.47

0.35

±0.078125 V

2.04

2.28

1.39

1.04

0.65

0.63

0.60

0.54

0.35

0.32

0.36

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Measurement-computing USB-2408 Series Manuel d'utilisateur Page 24

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