NI-9230 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

3 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

TEDS capacitive drive

3000 pF

Internal master timebase ( fM)

Frequency

13.1072 MHz

Accuracy

±100 ppm

Data rate range ( fs) using internal master timebase

Minimum

0.985 kS/s

Maximum

12.8 kS/s

Data rate range ( fs) using external master timebase

Minimum

0.977 kS/s

Maximum

12.84 kS/s

Figure 1. Data Rates (fs)
fM2×m×n
where
  • for m = 64, n = 9 to 25
  • for m = 128, n = 5 to 25
  • for m = 256, n = 2 to 26

Input coupling

AC/DC (software-selectable)

AC cutoff frequency

-3 dB

0.1 Hz

-0.1 dB

0.87 Hz maximum

Figure 2. AC Cutoff Frequency Response

1378

DC voltage input range

Minimum

±30.87 V

Typical

±31.5 V

Maximum

±32.13 V

AC voltage full-scale range[1]

Minimum

±30.87 V peak

Typical

±31.5 V peak

Maximum

±32.13 V peak

Channel-to-channel common-mode voltage range (AI- to AI-)

±1 V maximum

IEPE excitation current (software-selectable on/off)

Minimum

4 mA

Typical

4.25 mA

IEPE excitation noise

100 nA rms

IEPE compliance voltage

22 V minimum

If you are using an IEPE sensor, use the following equation to make sure your configuration meets the IEPE compliance voltage range.

Figure 3. IEPE Compliance Voltage Range
(0.67×Vcommon-mode+Vbias±Vfull-scale)

where

  • V common-mode is the channel-to-channel common-mode voltage across two or more channels
  • V bias is the bias voltage of the IEPE sensor
  • V full-scale is the full-scale voltage of the IEPE sensor
Note This equation must resolve to 0 V to 22 V.
IEPE fault detection[2]

Short circuit

V AI < 1.5 V

Open loop

V AI > 24 V

Overvoltage protection

±45 V for a low impedance source connected between any two terminals

Input delay

64x decimation

30/fs + 3.0 μs

128x decimation

29/fs + 3.0 μs

256x decimation

28/fs + 3.0 μs

Table 1. Accuracy
Measurement Conditions Percent of Reading (Gain Error) Percent of Range[3] (Offset Error)[4]
Calibrated Maximum (-40 °C to 70 °C) ±0.60% ±0.23%
Typical (23 °C, ±5 °C) ±0.10% ±0.023%
Uncalibrated[5] Maximum (-40 °C to 70 °C) ±1.50% ±0.59%
Typical (23 °C, ±5 °C) ±0.40% ±0.12%
Stability

Gain drift

±25 ppm/°C

Offset drift (DC coupled)

±320 μV/°C

Table 2. Gain Matching (Calibrated)
Frequency Band 20 Hz to 5.12 kHz
Typical Maximum
Channel-to-channel 25 mdB 120 mdB
Table 3. Phase Matching (Maximum)
Frequency Band 20 Hz to 5.12 kHz
Channel-to-channel (0.022°/kHz × fin) + 0.045°
Module-to-module (0.022°/kHz × fin) + 0.045° + (360° × fin /fM)

Passband frequency

0.4 · fs

Table 4. Flatness (Peak-to-Peak)
Frequency Band 20 Hz to 5.12 kHz
Typical 70 mdB
Maximum 75 mdB
Table 5. Phase Nonlinearity (Maximum)
Frequency Band 20 Hz to 5.12 kHz
AC Coupled 0.31°
DC Coupled 0.025°
Stopband

Frequency

0.5 · fs

Rejection

120 dB

Alias-free bandwidth

0.4 · fs

Oversample rate

64 · fs, 128 · fs, and 256 · fs

Rejection at oversample rate[6]

f s = 10.24 kS/s

95 dB at 1.311 MHz

f s = 12.8 kS/s

118 dB at 3.277 MHz

Crosstalk ( fin = 1 kHz)

-125 dB

CMRR

Channel-to-channel ( fin ≤ 1 kHz)

56 dB

Channel-to-earth ( fin = 60 Hz)

107 dB

SFDR (fin = 1 kHz, -60 dBFS)

f s = 12.8 kS/s

122 dBFS

f s = 11.38 kS/s

118 dBFS

f s = 10.24 kS/s

120 dBFS

Table 6. Input Noise
Data Rate 12.8 kS/s 11.38 kS/s 10.24 kS/s
AC coupled 106 μV RMS 169 μV RMS 117 μV RMS
DC coupled 97 μV RMS 164 μV RMS 111 μV RMS
Table 7. Dynamic range ( fin = 1 kHz, -60 dBFS)
Data Rate 12.8 kS/s 11.38 kS/s 10.24 kS/s
AC coupled 106 dBFS 102 dBFS 106 dBFS
DC coupled 107 dBFS 103 dBFS 106 dBFS
Input impedance

Differential

324 kΩ

AI- to isolated ground

50 Ω

Table 8. Total Harmonic Distortion (THD)
Input Amplitude 1 kHz
-10.5424 dBFS -95 dB
-20 dBFS -95 dB
Intermodulation distortion (-10.5424 dBFS)

DIN 50 Hz/1 kHz4:1 amplitude ratio

-80 dB

CCIF 3.5 kHz/4 kHz1:1 amplitude ratio

-95 dB

Power Requirements

Power consumption from chassis

Active mode

1 W maximum

Sleep mode

25 μW maximum

Thermal dissipation (at 70 °C)

Active mode

1 W maximum

Active mode (BNC variant)

1.5 W maximum

Sleep mode

25 μW maximum

Physical Characteristics

Screw-terminal wiring

Gauge

0.05 mm2 to 1.5 mm2 (30 AWG to 14 AWG) copper conductor wire

Wire strip length

6 mm (0.24 in.) of insulation stripped from the end

Temperature rating

90 °C, minimum

Torque for screw terminals

0.22 N · m to 0.25 N · m (1.95 lb · in. to 2.21 lb · in.)

Wires per screw terminal

One wire per screw terminal; two wires per screw terminal using a 2-wire ferrule

Ferrules

0.25 mm2 to 1.5 mm2

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.80 lb · in.)

Dimensions

Visit ni.com/dimensions and search by module number.

Weight

NI-9230 with screw terminal

142 g (5.0 oz)

NI-9230 with BNC

159 g (5.6 oz)

Safety Voltages

Connect only voltages that are within the following limits.

Isolation

Channel-to-channel

None

Channel-to-earth ground

Continuous

60 V DC, Measurement Category I

Withstand

1,000 V RMS, verified by a 5 s dielectric withstand test

Measurement Category I

Warning Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV, or for measurements on MAINs circuits or on circuits derived from Overvoltage Category II, III, or IV which may have transient overvoltages above what the product can withstand. The product must not be connected to circuits that have a maximum voltage above the continuous working voltage, relative to earth or to other channels, or this could damage and defeat the insulation. The product can only withstand transients up to the transient overvoltage rating without breakdown or damage to the insulation. An analysis of the working voltages, loop impedances, temporary overvoltages, and transient overvoltages in the system must be conducted prior to making measurements.
Mise en garde Ne pas connecter le produit à des signaux dans les catégories de mesure II, III ou IV et ne pas l'utiliser pour des mesures dans ces catégories, ou des mesures sur secteur ou sur des circuits dérivés de surtensions de catégorie II, III ou IV pouvant présenter des surtensions transitoires supérieures à ce que le produit peut supporter. Le produit ne doit pas être raccordé à des circuits ayant une tension maximale supérieure à la tension de fonctionnement continu, par rapport à la terre ou à d'autres voies, sous peine d'endommager et de compromettre l'isolation. Le produit peut tomber en panne et son isolation risque d'être endommagée si les tensions transitoires dépassent la surtension transitoire nominale. Une analyse des tensions de fonctionnement, des impédances de boucle, des surtensions temporaires et des surtensions transitoires dans le système doit être effectuée avant de procéder à des mesures.

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.

Note Measurement Categories CAT I and CAT O are equivalent. These test and measurement circuits are for other circuits not intended for direct connection to the MAINS building installations of Measurement Categories CAT II, CAT III, or CAT IV.

Environmental Characteristics

Temperature

Operating

-40 °C to 70 °C

Storage

-40 °C to 85 °C

Humidity

Operating

10% RH to 90% RH, noncondensing

Storage

5% RH to 95% RH, noncondensing

Ingress protection

IP40

Pollution Degree

2

Maximum altitude

5,000 m

Shock and Vibration
Operating vibration

Random

5 g RMS, 10 Hz to 500 Hz

Sinusoidal

5 g, 10 Hz to 500 Hz

Operating shock

30 g, 11 ms half sine; 50 g, 3 ms half sine; 18 shocks at 6 orientations

To meet these shock and vibration specifications, you must panel mount the system.

Calibration

You can obtain the calibration certificate and information about calibration services for the NI-9230 at ni.com/calibration.

Calibration interval

1 year

1 The DC + AC voltage must be below the overvoltage protection of the NI-9230.

2 Refer to the software help for information on reading the IEPE fault detection status.

3 Range equals 31.5 V

4 DC coupled

5 Uncalibrated accuracy refers to the accuracy achieved when acquiring data in raw or unscaled modes and in which calibration constants that are stored in the module are not applied to the data.

6 Rejection of analog prefilter at oversample rate.