Measurement-computing USB-2416 Manuel d'utilisateur télécharger pdf (Page 35)

USB-2416 User's Guide Specifications

Table 15. 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

±20 V

34.90

28.32

19.22

15.17

8.67

7.51

7.22

3.61

2.17

±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

0.43

0.36

±1.25 V

2.81 2.66 2.10 1.41 0.83 0.83 0.76 0.58 0.51 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

Table 16. Noise-free resolution specifications (bits)

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

17.4 17.7 18.2 18.6 19.4 19.4 19.6 19.6 20.6 20.6 21.4

±10 V

17.2

17.6

18.1

18.7

19.3

19.5

20.0

20.6

21.0

±5 V

17.4

17.6

18.1

18.5

19.2

19.4

20.6

21.0

±2.5 V

17.2

17.4

18.1

18.4

19.3

19.4

19.7

20.3

20.7

21.0

±1.25 V

17.0

17.1

17.4

18.0

18.8

18.9

19.3

19.5

19.7

±0.625 V

16.0 16.2 17.1 17.3 17.8 18.0 18.1 18.3 18.9 18.8 19.2

±0.3125 V

15.3 15.3 16.2 16.4 17.0 17.0 17.0 17.3 17.5 17.9 17.9

±0.15625 V

14.5 14.1 15.3 15.5 15.7 16.1 16.1 16.1 16.8 16.9 17.1

±0.078125 V

14.5

14.3

15.0

15.4

16.1

16.2

16.4

17.0

17.1

16.9

Channel switching error

Table 17. Step response accuracy specifications

Accuracy

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

0.0011% 0.0006% 0.0004% 0.0003% 0.0002% 0.0002% 0.0002% 0.0002% 0.0001% 0.0001% 0.0001%

±10 V

0.0010%

0.0008%

0.0005%

0.0004%

0.0002%

0.0003%

0.0002%

0.0001%

±5 V

0.0009%

0.0008%

0.0004%

0.0003%

0.0002%

0.0001%

±2.5 V

0.0010%

0.0007%

0.0008%

0.0004%

0.0003%

0.0002%

0.0001%

±1.25 V

0.0013% 0.0009% 0.0008% 0.0007% 0.0004% 0.0004% 0.0003% 0.0003% 0.0003% 0.0003% 0.0003%

±0.625 V

0.0022% 0.0016% 0.0011% 0.0011% 0.0007% 0.0007% 0.0005% 0.0005% 0.0004% 0.0005% 0.0003%

±0.3125 V

0.0031% 0.0031% 0.0020% 0.0017% 0.0015% 0.0012% 0.0010% 0.0010% 0.0012% 0.0009% 0.0009%

±0.15625 V

0.0056%

0.0062%

0.0048%

0.0037%

0.0032%

0.0025%

0.0024%

0.0021%

0.0019%

0.0022%

0.0016%

±0.078125 V

0.0114%

0.0123%

0.0076%

0.0070%

0.0041%

0.0051%

0.0046%

0.0036%

0.0032%

0.0030%

0.0034%

Channel switching error is defined as the accuracy that can be expected after one conversion when switching

from a channel with a DC input at one extreme of full scale to another channel with a DC input at the other

extreme of full scale, expressed in terms of percentage of full scale value.

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 48 49

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