Channel Switching Error - Measurement Computing USB-2416 User Manual

USB-2416 User's Guide
Range (V) 3750 S/s
±20 34.90
±10 19.22
±5 8.60
±2.5 4.99
±1.25 2.81
±0.625 2.86
±0.3125 2.32
±0.15625 2.01
±0.078125 2.04
Range (V) 3750 S/s
±20 17.4
±10 17.2
±5 17.4
±2.5 17.2
±1.25 17.0
±0.625 16.0
±0.3125 15.3
±0.15625 14.5
±0.078125 14.5

Channel switching error

3750
Range (V)
S/s
0.001
±20
1%
0.001
±10
0%
0.000
±5
9%
0.001
±2.5
0%
0.001
±1.25
3%
0.002
±0.625
2%
0.003
±0.3125
1%
0.005
±0.15625
6%
0.011
±0.078125
4%
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.
Table 15. RMS noise performance specifications (µVRMS)
2000 S/s 1000 S/s 500 S/s
28.32 19.22 15.17
15.17 10.87 6.83
7.21 5.18 3.92
4.36 2.72 2.15
2.66 2.10 1.41
2.51 1.28 1.12
2.24 1.24 1.05
2.55 1.13 1.00
2.28 1.39 1.04
Table 16. Noise-free resolution specifications (bits)
2000 S/s 1000 S/s 500 S/s
17.7 18.2 18.6
17.6 18.1 18.7
17.6 18.1 18.5
17.4 18.1 18.4
17.1 17.4 18.0
16.2 17.1 17.3
15.3 16.2 16.4
14.1 15.3 15.5
14.3 15.0 15.4
Table 17. Step response accuracy specifications
2000 1000 500
S/s S/s S/s
0.0006 0.0004 0.0003
% % %
0.0008 0.0005 0.0004
% % %
0.0008 0.0004 0.0004
% % %
0.0007 0.0008 0.0004
% % %
0.0009 0.0008 0.0007
% % %
0.0016 0.0011 0.0011
% % %
0.0031 0.0020 0.0017
% % %
0.0062 0.0048 0.0037
% % %
0.0123 0.0076 0.0070
% % %
A/D data rate
100 S/s 60 S/s 50 S/s
8.67 8.67 7.51
4.62 4.62 4.05
2.46 2.17 2.17
1.14 1.07 1.07
0.83 0.83 0.76
0.81 0.73 0.66
0.72 0.71 0.68
0.86 0.68 0.68
0.65 0.63 0.60
A/D data rate
100 S/s 60 S/s 50 S/s
19.4 19.4 19.6
19.3 19.3 19.5
19.2 19.4 19.4
19.3 19.4 19.4
18.8 18.8 18.9
17.8 18.0 18.1
17.0 17.0 17.0
15.7 16.1 16.1
16.1 16.2 16.2
Accuracy S/s
100
60 S/s 50 S/s
S/s
0.0002 0.0002 0.0002
% % %
0.0002 0.0002 0.0003
% % %
0.0003 0.0002 0.0002
% % %
0.0003 0.0002 0.0002
% % %
0.0004 0.0004 0.0003
% % %
0.0007 0.0007 0.0005
% % %
0.0015 0.0012 0.0010
% % %
0.0032 0.0025 0.0024
% % %
0.0041 0.0051 0.0046
% % %
34
Specifications
25 S/s 10 S/s 5 S/s
7.22 3.61 3.61
2.89 1.81 1.44
2.16 0.90 0.72
0.87 0.58 0.43
0.58 0.51 0.51
0.58 0.38 0.40
0.56 0.51 0.39
0.64 0.40 0.47
0.54 0.35 0.32
25 S/s 10 S/s 5 S/s
19.6 20.6 20.6
20.0 20.6 21.0
19.4 20.6 21.0
19.7 20.3 20.7
19.3 19.5 19.5
18.3 18.9 18.8
17.3 17.5 17.9
16.1 16.8 16.9
16.4 17.0 17.1
25 S/s 10 S/s 5 S/s
0.0002 0.0001 0.0001
% % %
0.0002 0.0001 0.0001
% % %
0.0002 0.0001 0.0001
% % %
0.0002 0.0002 0.0001
% % %
0.0003 0.0003 0.0003
% % %
0.0005 0.0004 0.0005
% % %
0.0010 0.0012 0.0009
% % %
0.0021 0.0019 0.0022
% % %
0.0036 0.0032 0.0030
% % %
2.5 S/s
2.17
1.44
0.72
0.36
0.43
0.30
0.37
0.35
0.36
2.5 S/s
21.4
21.0
21.0
21.0
19.7
19.2
17.9
17.1
16.9
2.5 S/s
0.0001
%
0.0001
%
0.0001
%
0.0001
%
0.0003
%
0.0003
%
0.0009
%
0.0016
%
0.0034
%