Measurement-computing PCI-DAS6023 Bedienungsanleitung PDF herunterladen (Seite 33)

PCI-DAS6023 and PCI-DAS6025 User's Guide Specifications

Parametrics

Table 7. Parametrics specifications

Maximum working voltage

(signal + common-mode)

Input must remain within ±11 V of ground

CMRR @ 60 Hz

±10 V: 85 dB

±5 V: 85 dB

±500 mV: 90 dB

±50 mV: 90 dB

Small signal bandwidth, all ranges

500 kHz

Large signal bandwidth, all ranges

225 kHz

Input coupling

Input impedance

100 GOhm in normal operation.

Min 10 MOhm in powered off or overload condition.

Input bias current

±200 pA

Input offset current

±100 pA

Absolute maximum input voltage

–40 V to +55 V, power on or off. Protected inputs:

 CH<15:0> IN

 AISENSE

Crosstalk

Adjacent channels: -60 dB

All other channels: -80 dB

Noise performance

Table 8 summarizes the noise performance for the PCI-DAS6025, PCI-DAS6023. Noise distribution is

determined by gathering 50 K samples with inputs tied to ground at the user connector. Samples are gathered at

the maximum specified single-channel sampling rate. Specification applies to both single-ended and differential

modes of operation.

Table 8. Analog input noise performance (not including quantization)

Range

Typical Counts

Dithered

LSBrms

Dithered

Typical Counts

Undithered

LSBrms

Undithered

±10 V

0.6

0.1

±5 V

0.6

0.1

±500 mV

0.6

0.1

±50 mV

0.8

0.7

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