Measurement-computing PCI-DAS1602/12 Bedienungsanleitung PDF herunterladen (Seite 23)

PCI-DAS1602/12 User's Guide Specifications

Accuracy

330 kHz sampling rate, single channel operation and a 60-minute warm-up. Accuracies are listed for

operational temperatures within ±2 ºC of internal calibration temperature. Calibrator test source high side tied

to Channel 0 High, and low side tied to Channel 0 Low. Low-level ground is tied to Channel 0 Low at the user

connector.

Table 2. Absolute accuracy specifications

Range

Absolute Accuracy (LSB)

Absolute Accuracy (mV)

±10 V

±2.5 LSB

±12.2

±5 V

±2.5 LSB

±6.10

±2.5 V

±2.5 LSB

±3.05

±1.25 V

±2.5 LSB

±1.53

0 V to +10 V

±2.5 LSB

±6.10

0 V to +5 V

±2.5 LSB

±3.05

0 V to +2.5 V

±2.5 LSB

±1.53

0 V to +1.25 V

±2.5 LSB

±0.76

Table 3. Accuracy components (errors in LSBs)

Range

Gain Error

Offset Error

DLE

ILE

±10 V

±1.0 max

±0.75 max

±1.5 max

±5 V

±1.0 max

±0.75 max

±1.5 max

±2.5 V

±1.0 max

±0.75 max

±1.5 max

±1.25 V

±1.0 max

±0.75 max

±1.5 max

0 to +10 V

±1.0 max

±0.75 max

±1.5 max

0 to +5 V

±1.0 max

±0.75 max

±1.5 max

0 to +2.5 V

±1.0 max

±0.75 max

±1.5 max

0 to +1.25 V

±1.0 max

±0.75 max

±1.5 max

Each PCI-DAS1602/12 is tested at the factory to assure the board’s overall error does not exceed accuracy

limits described in Table 2.

As shown in Table 3, total board error is a combination of gain, offset, differential linearity error (DLE) and

integral linearity error (ILE). The theoretical worst-case error of the board may be calculated by summing these

component errors. Worst case errors are realized only in the unlikely event that each of the component errors is

at their maximum level, and causing error in the same direction.

Table 4. Analog input drift specifications

ADC full-scale gain drift

±6 ppm/°C

ADC zero drift

±6 ppm/°C

No missing codes guaranteed

12 bits

Common mode range

±10 V

CMRR @ 60 Hz

-70 dB typ

Input impedance

10 MOhm min

Input leakage current

200 nA max

Absolute maximum input voltage

±35 V power on or off

Warm-up time

60 minutes

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