MC PCI-DAS1602 Uživatelský manuál stáhnout pdf (Strana 4)

Specifications PCI-DAS1602/16

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 16

1 2 3 4 5 6 7 8 9 10 11

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MC PCI-DAS1602 Uživatelský manuál Strana 4