NI-9381 Specifications
- Updated2024-11-05
- 4 minute(s) read
NI-9381 Specifications
Definitions
Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty.
Characteristics describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.
- Typical specifications describe the performance met by a majority of models.
- Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.
Specifications are Typical unless otherwise noted.
Conditions
Specifications are valid for the range -40 °C to 70 °C unless otherwise noted.
NI-9381 Pinout
Signal | Description |
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AI | Analog input signal connection |
AO | Analog output signal connection |
DIO | Digital input/output signal connection |
GND | Ground connection |
Analog Input
Number of channels | 8 single-ended channels | ||||||
ADC resolution | 12 bits | ||||||
Type of ADC | Successive approximation register (SAR) | ||||||
Input range | 0 V to 5 V ±1% | ||||||
DNL | ±1.25 LSB | ||||||
Conversion time | 50 µs (20 kS/s) | ||||||
Input coupling | DC | ||||||
Input impedance | 1 MΩ in parallel with 50 pF | ||||||
Bandwidth | 1 kHz | ||||||
|
Measurement Conditions | Percent of Reading (Gain Error) | Percent of Range (Offset Error) | |
---|---|---|---|
Calibrated | Maximum (-40 °C to 70 °C) | ±0.70% | ±13 mV |
Typical (23 °C, ±5 °C) | ±0.15% | ±6.5 mV | |
Uncalibrated[2]2 Uncalibrated accuracy refers to the accuracy achieved when acquiring in raw or unscaled modes where the calibration constants stored in the module are not applied to the data. | Maximum (-40 °C to 70 °C) | ±1.00% | ±16 mV |
Typical (23 °C, ±5 °C) | ±0.50% | ±7.5 mV |
Analog Output
Number of channels | 8 channels | ||||||
DAC resolution | 12 bits | ||||||
Type of DAC | String | ||||||
Startup voltage | 0 V | ||||||
Output range | 0 V to 5 V ±1% | ||||||
Current drive | ±1 mA | ||||||
Output impedance | 5 Ω | ||||||
Update time | 50 µs (20 kS/s) | ||||||
Short-circuit protection | Indefinitely | ||||||
Slew rate | 30 V/ms | ||||||
Settling time | 900 µs | ||||||
DNL | ±1 LSB | ||||||
Capacitive drive | 1,500 pF | ||||||
|
Measurement Conditions | Percent of Reading (Gain Error) | Percent of Range (Offset Error) | |
---|---|---|---|
Calibrated | Maximum (-40 °C to 70 °C) | ±1.02% | ±23.5 mV |
Typical (23 °C, ±5 °C) | ±0.19% | ±5 mV | |
Uncalibrated[4]4 Uncalibrated accuracy refers to the accuracy achieved when acquiring in raw or unscaled modes where the calibration constants stored in the module are not applied to the data. | Maximum (-40 °C to 70 °C) | ±1.9% | ±50 mV |
Typical (23 °C, ±5 °C) | ±0.6% | ±10 mV |
Digital Input/Output
Number of channels | 4 channels | ||||||||||||||||||||
Default power-on line direction | Input | ||||||||||||||||||||
Input/output type | LVTTL, single-ended | ||||||||||||||||||||
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Maximum I/O switching frequency | 1 MHz | ||||||||||||||||||||
Capacitive drive | 100 pF |
Safety Voltages
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Environmental Characteristics
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Ingress protection | IP40 | ||||||||||||
Pollution Degree | 2 | ||||||||||||
Maximum altitude | 2,000 m | ||||||||||||
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To meet these shock and vibration specifications, you must panel mount the system.
Power Requirements
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Physical Characteristics
Dimensions | Visit ni.com/dimensions and search by module number. |
Weight | 145 g (5.1 oz) |
1 Accuracy is impacted for AC signals by an amount equal to 4.0f μV, where f is the signal frequency in hertz
2 Uncalibrated accuracy refers to the accuracy achieved when acquiring in raw or unscaled modes where the calibration constants stored in the module are not applied to the data.
3 Accuracy is impacted for AC signals by an amount equal to 4.0f μV, where f is the signal frequency in hertz
4 Uncalibrated accuracy refers to the accuracy achieved when acquiring in raw or unscaled modes where the calibration constants stored in the module are not applied to the data.