Measurement-computing PCI-DAS1602/16 Bedienungsanleitung PDF herunterladen (Seite 23)

PCI-DAS1602/16 User's Guide Specifications

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%

1.7

± 5.000 V

97%

80%

1.7

± 2.500 V

96%

79%

1.7

± 1.250 V

96%

79%

1.7

0 - 10.00 V

88%

65%

2.3

0 - 5.000 V

88%

65%

2.3

0 - 2.500 V

83%

61%

2.3

0 - 1.250 V

83%

61%

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

±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

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