C Series Analog Input Modules
NI 9201, NI 921x, NI 9221, NI 923x
• Signal conditioning for high voltage
(±±6 V), thermocouples, RTDs,
accelerometers, microphones,
strain gages, current inputs
• Up to 866 kS/s multiplexed or up to
166 kS/s simultaneous-sampling
analog-to-digital converter (ADC)
• Up to 32 channels per module
• Advanced features such as smart TEDS
sensor capability, antialiasing filters,
open-thermocouple detection
• ±86 mV, ±16 V, or ±±6 V analog
input ranges
• Up to 2,366 Vrms isolation (withstand),
up to 256 Vrms isolation (continuous)
• NIST-traceable calibration certificate
for guaranteed accuracy
• 12-, 1±-, or 24-bit
(delta-sigma) resolution
Resolution Max Sampling
Signal
Input Ranges
Simultaneous Antialiasing
Model CompactRIO NI CompactDAQ Signal Type
Channels
(bits)
Rate (S/s)
Sampling
Filters
Isolation Connector Options
NI 9261
NI 9263
NI 9265
NI 926±
Voltage
Current
Voltage
CAT I Isolated
Voltage
8
8
12
1±
1±
1±
566 k
266 k
256 k
256 k
±16 V
–
–
–
–
–
–
–
–
Screw Terminal, D-Sub
Screw Terminal
Spring Terminal, D-Sub
Spring Terminal
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
±26 mA, 6 to 26 mA
±16, ±5, ±1, ±6.2 V
±16, ±5, ±1, ±6.2 V
32 SE/1± DI
1± DI
NI 9211
NI 9215
NI 9217
NI 9221
NI 9233
NI 9237
Thermocouple
Voltage
RTD
Voltage
IEPE
4
4
4
8
4
4
24
1±
24
12
24
24
15
166 k/ch
466
866 k
56 k/ch
56 k/ch
±86 mV
±16 V
6 to 466 Ω
±±6 V
±5 V
±256 mV
–
Screw Terminal
Screw Terminal, BNC
Screw Terminal
Screw Terminal, D-Sub
BNC
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
–
ꢀ
ꢀ
ꢀ
ꢀ
–
–
ꢀ
–
ꢀ
–
ꢀ
ꢀ
ꢀ
ꢀ
Bridge
RJ56
ꢀ
Table 1. C Series Analog Input Modules Selection Guide
high-speed decision making for all C Series analog modules. For
instance, with CompactRIO, you can implement custom triggering for
any analog sensor type on a per-channel basis using the flexibility and
performance of the FPGA and the numerous arithmetic and comparision
function blocks built into NI LabVIEW FPGA.
Overview
High-accuracy C Series analog input modules for National Instruments
CompactRIO and NI CompactDAQ provide high-performance measurements
for a wide variety of industrial, in-vehicle, and laboratory sensors and
signal types. Each module includes built-in signal conditioning and an
integrated connector with screw terminal or cable options for flexible
and low-cost signal wiring. All modules feature NI CompactRIO Extreme
Industrial Certifications and Ratings.
Key Features
• High-accuracy, high-performance analog measurements for any
CompactRIO embedded system, R Series expansion chassis, or
NI CompactDAQ chassis
System Compatibility
• Screw terminals, BNC, D-Sub, spring terminals, strain relief, high-
voltage, cable, solder cup backshell, and other connectivity options
• Available channel-to-earth ground double-isolation barrier for safety,
noise immunity, and high common-mode voltage range
• CompactRIO Extreme Industrial Certifications and Ratings
• Built-in signal conditioning for direct connection to sensors and
industrial devices
You can use NI C Series modules in multiple system types depending
on available software. See Table 1 for CompactRIO and NI CompactDAQ
module compatibility because not all modules work with both systems.
Many of the advanced features described apply only to reconfigurable
I/O systems and not to NI CompactDAQ.
Advanced Features
When used with CompactRIO, NI C Series analog input modules
connect directly to reconfigurable I/O (RIO) FPGA hardware to create
high-performance embedded systems. The reconfigurable FPGA
hardware within CompactRIO provides a variety of options for custom
timing, triggering, synchronization, filtering, signal processing, and
Visit ni.com/compactrio or ni.com/compactdaq for up-to-date
information on module availability, example programs, application notes,
and other developer tools.
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