NI 9222

The NI 9222 is a four-channel C Series voltage input module with simultaneous differential acquisition, 16-bit resolution and a maximum sampling rate of 500 kS/s per channel. It measures analog signals rather than generating analog outputs.

ManufacturerNational Instruments

ModelNI 9222

Part Number781397-01

Product TypeC Series Voltage Input Module

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Channels4 differential analog inputs

Resolution16 bits

SamplingSimultaneous, up to 500 kS/s per channel

Nominal input range±10 V

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Overview

Product overview

Key product information and technical features.

Each input channel has an independent signal path and ADC, allowing all four channels to be sampled simultaneously. This architecture supports time-aligned acquisition of rapidly changing voltage signals.

The module fits NI CompactDAQ and CompactRIO measurement systems. Sampling performance depends on the acquisition method: NI specifies 500 kS/s for CompactDAQ with NI-DAQmx and CompactRIO FPGA User-Controlled I/O Sampling, versus 300 kS/s with CompactRIO FPGA I/O Nodes.

Independent ADCs enable simultaneous acquisition across four differential input channels.
16-bit successive approximation register (SAR) conversion.
±30 V input overvoltage protection.
60 VDC continuous channel-to-channel isolation, Measurement Category I.

Verified specifications

Technical data

Verified product specifications.

Analog input channels	4 differential
ADC resolution	16 bits
Nominal input voltage range	±10 V
Maximum sampling rate per channel	500; CompactDAQ NI-DAQmx or CompactRIO FPGA User-Controlled I/O Sampling kS/s
CompactRIO FPGA I/O Nodes maximum sampling rate	300 kS/s
Input impedance	>1 GΩ
Operating temperature	-40 to 70 °C