NI-9234 Specifications
- Updated2023-06-30
- 6 minute(s) read
NI-9234 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.
Input Characteristics
Number of channels | 4 analog input channels | ||||||||||||||||||
ADC resolution | 24 bits | ||||||||||||||||||
Type of ADC | Delta-Sigma (with analog prefiltering) | ||||||||||||||||||
Sampling mode | Simultaneous | ||||||||||||||||||
Type of TEDS supported | IEEE 1451.4 TEDS Class I | ||||||||||||||||||
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Data rates [1]1 The data rate must remain within the appropriate data range. (fs) | (fM ÷ 256)/n, n = 1, 2, ..., 31 | ||||||||||||||||||
Input coupling | AC/DC (software-selectable) | ||||||||||||||||||
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Input range | ±5 V | ||||||||
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Common-mode voltage range (AI- to earth ground) | ±2 V maximum | ||||||||
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Power-on glitch | 90 μA for 10 μs | ||||||||
IEPE compliance voltage | 19 V maximum |
If you are using an IEPE sensor, use the following equation to make sure your configuration meets the IEPE compliance voltage range.
- (Vcommon-mode + Vbias ± Vfull-scale) must be 0 to 19
Where
- V common-mode is the common-mode voltage applied to the NI 9234
- V bias is the bias voltage of the IEPE sensor
- V full-scale is the full-scale voltage of the IEPE sensor
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Input delay | (40 + 13/512)/fs + 2.6 μs |
Measurement Conditions | Percent of Reading (Gain Error) | Percent of Range[2]2 Range = 5.1 Vpk (Offset Error) | |
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Calibrated | Maximum (-40 °C to 70 °C) | 0.34%, ±0.03 dB | ±0.14%, 7.1 mV |
Typical (25 °C±5 °C) | 0.05%, ±0.005 dB | ±0.006%, 0.3 mV | |
Uncalibrated[3]3 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%, ±0.16 dB | ±0.27%, 13.9 mV |
Typical (25 °C±5 °C) | 0.48%, ±0.04 dB | ±0.04%, 2.3 mV |
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Phase nonlinearity (fs = 51.2 kS/s) | ±0.45° maximum | ||||||||||||
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Alias-free bandwidth | 0.45 * fs | ||||||||||||
Oversample rate | 64 * fs | ||||||||||||
Crosstalk (1 kHz) | -110 dB | ||||||||||||
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SFDR (fin = 1 kHz, -60 dBFS) | 120 dB |
Idle Channel | 51.2 kS/s | 25.6 kS/s | 2.048 kS/s |
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Noise | 97 dBFS | 99 dBFS | 103 dBFS |
50 μVrms | 40 μVrms | 25 μVrms | |
Noise density | 310 nV/√Hz | 350 nV/√Hz | 780 nV/√Hz |
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Input Amplitude | 1 kHz | 8 kHz |
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-1 dBFS | -95 dB | -87 dB |
-20 dBFS | -95 dB | -80 dB |
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MTBF | 390,362 hours at 25 °C; Bellcore Issue 2, Method 1, Case 3, Limited Part Stress Method |
Power Requirements
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Physical Characteristics
Dimensions | Visit ni.com/dimensions and search by module number. |
Weight | 173 g (6.1 oz) |
Safety Voltages
Connect only voltages that are within the following limits:
Channel-to-earth ground | ±30 V maximum, Measurement Category I | ||||||
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Measurement Category I
Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live electrical supply system that powers equipment. This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics.
Environmental Characteristics
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Ingress protection | IP40 | ||||||||||||
Pollution Degree | 2 | ||||||||||||
Maximum altitude | 5,000 m | ||||||||||||
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To meet these shock and vibration specifications, you must panel mount the system.
Calibration
Calibration interval | 1 year |