Noise Performance; Crosstalk - Measurement Computing PCI-DAS1602/16 User Manual

PCI-DAS1602/16 User's Guide

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.
Range ±2 counts
± 10.00 V 97%
± 5.000 V 97%
± 2.500 V 96%
± 1.250 V 96%
0 - 10.00 V 88%
0 - 5.000 V 88%
0 - 2.500 V 83%
0 - 1.250 V 83%
* 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.
Range
±10.000 V
±5.000 V
±2.500 V
±1.250 V
0V to +10.000 V
0V to +5.000 V
0V to +2.500 V
0V to +1.250 V
Table 4. Noise specifications
±1 count
80%
80%
79%
79%
65%
65%
61%
61%
Table 5. Crosstalk specifications
1 kHz Crosstalk
(LSB pk-pk)
4
2
2
3
4
2
2
3
Max Counts
11
11
11
11
15
15
15
16
10 kHz Crosstalk
(LSB pk-pk)
13
7
5
4
8
5
4
3
22
Specifications
LSBrms*
1.7
1.7
1.7
1.7
2.3
2.3
2.3
2.4
50 kHz Crosstalk
(LSB pk-pk)
24
18
16
14
23
16
16
16