Noise performance, Crosstalk – Measurement Computing PCI-DAS1602/16 User Manual
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PCI-DAS1602/16 User's Guide
Specifications
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Noise performance
The following table summarizes the worst case noise performance for the PCI-DAS1602/16. Noise distribution
is determined by gathering 50000 samples with inputs tied to ground at the PCI-DAS1602/16 main connector.
Data is for both single-ended and differential modes of operation.
Table 4. Noise specifications
Range
±2 counts
±1 count
Max Counts
LSBrms*
± 10.00 V
97%
80%
11
1.7
± 5.000 V
97%
80%
11
1.7
± 2.500 V
96%
79%
11
1.7
± 1.250 V
96%
79%
11
1.7
0 - 10.00 V
88%
65%
15
2.3
0 - 5.000 V
88%
65%
15
2.3
0 - 2.500 V
83%
61%
15
2.3
0 - 1.250 V
83%
61%
16
2.4
* Input noise is assumed to be Gaussian. An RMS noise value from a Gaussian distribution is calculated by
dividing the peak-to-peak bin spread by 6.6.
Crosstalk
Crosstalk is defined here as the influence of one channel upon another when scanning two channels at the
specified per channel rate for a total of 50000 samples. A full scale 100 Hz triangle wave is input on channel 1.
Channel 0 is tied to analog ground at the 100-pin user connector. Table 5 summarizes the influence of channel
1 on channel 0 and does not include the effects of noise.
Table 5. Crosstalk specifications
Range
1 kHz Crosstalk
(LSB pk-pk)
10 kHz Crosstalk
(LSB pk-pk)
50 kHz Crosstalk
(LSB pk-pk)
±10.000 V
4
13
24
±5.000 V
2
7
18
±2.500 V
2
5
16
±1.250 V
3
4
14
0V to +10.000 V
4
8
23
0V to +5.000 V
2
5
16
0V to +2.500 V
2
4
16
0V to +1.250 V
3
3
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