9/18

www.ni.com

Nominal Range

Residual Gain Error

(ppm of Reading)

Gain

Tempco

(ppm/°C)

Reference

Tempco

(ppm/°C)

Residual Offset

Error (ppm of

Range)

Offset Tempco

(ppm of

Range/°C)

INL Error

(ppm of

Range)

Random

Noise, σ ( V

μ

)

rms

Absolute Accuracy

at Full Scale ( V)

Positive

Full Scale

Negative

Full Scale

2

–2

102

8

5

15

42

46

71

528

1

–1

120

8

5

15

50

46

61

291

AbsoluteAccuracy = Reading · (GainError) + Range · (OffsetError) + NoiseUncertainty

GainError = ResidualAIGainError + GainTempco · (TempChangeFromLastInternalCal) + ReferenceTempco · (TempChangeFromLastExternalCal)

OffsetError = ResidualAIOffsetError + OffsetTempco · (TempChangeFromLastInternalCal) + INL_Error

NoiseUncertainty

For a coverage factor of 3 σ and averaging 10,000 points.

Absolute accuracy at full scale on the analog input channels is determined using the following assumptions:

*

TempChangeFromLastExternalCal = 10 °C

TempChangeFromLastInternalCal = 1 °C

number_of_readings = 10,000

CoverageFactor = 3 σ

For example, on the 10 V range, the absolute accuracy at full scale is as follows:

GainError = 95 ppm + 8 ppm · 1 + 5 ppm · 10

GainError = 153 ppm

OffsetError = 15 ppm + 35 ppm · 1 + 46 ppm

OffsetError = 96 ppm

NoiseUncertainty=

NoiseUncertainty = 7.6 μV

AbsoluteAccuracy = 10 V · (GainError) + 10 V · (OffsetError) + NoiseUncertainty

AbsoluteAccuracy = 2,498 μV

Accuracies listed are valid for up to two years from the device external calibration.

AO Absolute Accuracy Table

Nominal Range

Residual Gain Error

(ppm of Reading)

Gain

Tempco

(ppm/°C)

Reference

Tempco

(ppm/°C)

Residual Offset Error

(ppm of Range)

Offset Tempco

(ppm of Range/°C)

INL Error

(ppm of

Range)

Absolute Accuracy at

Full Scale ( V)

Positive

Full Scale

Negative

Full Scale

10

–10

110

17

5

65

1

64

3,066

5

–5

117

8

5

65

1

64

1,526

Accuracies listed are valid for up to two years from the device external calibration.

AbsoluteAccuracy = OutputValue · (GainError) + Range · (OffsetError)

GainError = ResidualGainError + GainTempco · (TempChangeFromLastInternalCal) + ReferenceTempco · (TempChangeFromLastExternalCal)

OffsetError = ResidualOffsetError + AOOffsetTempco · (TempChangeFromLastInternalCal) + INL_Error

Digital I/O/PFI

Static Characteristics

Number of channels

NI 6356

24 total, 8 (P0.<0..7>), 16 (PFI <0..7>/P1, PFI <8..15>/P2)

NI 6358

48 total, 32 (P0.<0..31>), 16 (PFI <0..7>/P1, PFI <8..15>/P2)

Ground reference

D GND

Direction control

Each terminal individually programmable as input or output

Pull-down resistor

50 kΩ typ, 20 kΩ min

Input voltage protection 2

±20 V on up to two pins

Waveform Characteristics (Port 0 Only)

Terminals used

NI 6356

Port 0 (P0.<0..7>)

NI 6358

Port 0 (P0.<0..31>)

Port/sample size

NI 6356

Up to 8 bits