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SPECIFICATIONS
sbRIO-9218
Non-Enclosed, 24-Bit, 51.2 kS/s/channel, 2-Channel C Series
Universal Analog Input Module
Contents
Definitions.................................................................................................................................1
Conditions................................................................................................................................. 2
General Characteristics............................................................................................................. 2
±16 V Characteristics................................................................................................................3
±65 mV Characteristics.............................................................................................................4
Full-Bridge Characteristics....................................................................................................... 6
IEPE Characteristics................................................................................................................. 8
±20 mA Characteristics...........................................................................................................10
±60 V Characteristics..............................................................................................................12
Half-Bridge Mode Characteristics.......................................................................................... 13
Quarter-Bridge Characteristics................................................................................................15
Safety Voltages........................................................................................................................17
Measurement Category................................................................................................... 18
Environmental Characteristics................................................................................................ 19
Power Requirements............................................................................................................... 20
Physical Characteristics.......................................................................................................... 20
Compliance Standards.............................................................................................................20
Safety Compliance Standards......................................................................................... 20
EMC Standards............................................................................................................... 21
Environmental Standards................................................................................................ 21
Calibration...............................................................................................................................21
Environmental Management................................................................................................... 21
Waste Electrical and Electronic Equipment (WEEE)..................................................... 21
电子信息产品污染控制管理办法（ RoHS）......................................................22
Product Certifications and Declarations................................................................................. 22
NI Services..............................................................................................................................22
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 d 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.
General Characteristics
Number of channels
2 analog input channels
ADC resolution
24 bits
Type of ADC
Delta-Sigma
Sampling mode
Simultaneous
TEDS support
IEEE 1451.4 TEDS Class 1
Internal master time (fM)
Frequency
13.1072 MHz
Accuracy
100 ppm
Figure 1. Data Rates
256 ÷ ??
?
, ? = 1, 2, ..., 31
Data rate range (fs ) using internal master time
Minimum
1.652 kS/s
Maximum
51.2 kS/s
Data rate range (fs ) using external master time
Minimum
1 kS/s
Maximum
51.367 kS/s
Overvoltage protection
Pin 2 to Pin 3
-20 V to 30 V
Any other pin-to-pin
±30 V
Note Be aware when processing acquisitions that include full-scale data. Full-scale
data readings indicate that an over-range has occurred in the analog front-end.
±16 V Characteristics
Input coupling
DC
Measurement range
Typical
±16.3 V
Minimum
±16.0 V
Table 1. ±16 V Accuracy
Measurement Conditions
Gain Error
Offset Error
Calibrated
Typical, 23 °C ±5 °C
0.08%
0.70 mV
Maximum, -40 °C to 70 °C
0.20%
9 mV
Uncalibrated1
Typical, 23 °C ±5 °C
1.2%
50 mV
Maximum, -40 °C to 70 °C
2.0%
70 mV
Gain drift
15 ppm/°C
Offset drift
32 μV/°C
Integral non-linearity (INL)
150 μV
Input noise, RMS
51.2 kS/s
128 μV
25.6 kS/s
107 μV
4.27 kS/s
81 μV
Input impedance
390 k?
Input bandwidth, -3 dB
0.49 fs
Flatness, DC-20 kHz, referred to 1 kHz
Typical
±30 mdB
Maximum
±50 mdB
Phase non-linearity, DC-20 kHz
0.30°
Input delay
(40 + [5/512])/fs + 5.3 μs
Stopband
Frequency
0.55 fs
Rejection
100 dB
