Measurement-computing PCI-DAS1602/16 Manual de usuario descargar pdf (Pagina 22)

PCI-DAS1602/16 User's Guide Specifications

Accuracy

Table 2. Analog input accuracy specifications

Range

Accuracy

BIP10

±16 LSB

BIP5

±6 LSB

BIP2.5

±16 LSB

BIP1.25

±16 LSB

UNI10

±8 LSB

UNI5

±28 LSB

UNI2.5

±28 LSB

UNI1.25

±28 LSB

Accuracy Components

Gain error

Trimmable by potentiometer to 0

Offset error

Trimmable by potentiometer to 0

PGA linearity error

±1.3 LSB typ , ±10.0 LSB max

Integral linearity error

±0.5 LSB typ , ±3.0 LSB max

Differential linearity error

±0.5 LSB typ, ±2.0 LSB max

Total board error is a combination of gain, offset, differential linearity and integral linearity error. The

theoretical absolute accuracy of the board may be calculated by summing these component errors. Worst case

error is realized only in the unlikely event that each of the component errors is at their maximum level, and

causing error in the same direction.

Analog input drift

Table 3. Analog input drift specifications

Range

Analog input full-scale

gain drift

Analog input zero drift

Overall analog input drift

± 10.00 V

2.2 LSB/°C max

1.8 LSB/°C max

4.0 LSB/°C max

± 5.000 V

2.2 LSB/°C max

1.9 LSB/°C max

4.1 LSB/°C max

± 2.500 V

2.2 LSB/°C max

2.0 LSB/°C max

4.2 LSB/°C max

± 1.250 V

2.2 LSB/°C max

2.3 LSB/°C max

4.5 LSB/°C max

0 - 10.00 V

4.1 LSB/°C max

1.9 LSB/°C max

6.0 LSB/°C max

0 - 5.000 V

4.1 LSB/°C max

2.1 LSB/°C max

6.2 LSB/°C max

0 - 2.500 V

4.1 LSB/°C max

2.4 LSB/°C max

6.5 LSB/°C max

0 - 1.250 V

4.1 LSB/°C max

3.0 LSB/°C max

7.1 LSB/°C max

Absolute error change per °C temperature change is a combination of the Gain and Offset drift of many

components. The theoretical worst case error of the board may be calculated by summing these component

errors. Worst case error is realized only in the unlikely event that each of the component errors is at their

maximum level, and causing error in the same direction.

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