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National Instruments NI-9203 C Series Current Input Module
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National Instruments · CompactDAQ / CompactRIO

NI-9203

The NI-9203 is an eight-channel C Series current input module with 16-bit resolution and programmable bipolar or unipolar current ranges. It supports sampling up to 200 kS/s for control and monitoring applications.

ManufacturerNational Instruments
ModelNI-9203
Part Number779516-02
Product TypeC Series Current Input Module
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Inputs8 analog current channels
Resolution16 bits
Nominal ranges±20 mA or 0–20 mA
Maximum sampling200 kS/s; 192 kS/s with R Series Expansion chassis
Sampling architectureMultiplexed; not simultaneous
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Overview

Product overview

Key product information and technical features.

Designed for current measurement in control and monitoring systems, the NI-9203 buffers and conditions its inputs before conversion by a shared 16-bit ADC.

NI offers screw-terminal and spring-terminal versions. The catalog tag identifies 779516-02, which NI lists as the conformally coated screw-terminal version; confirm the physical part number when selecting variant-specific documentation.

  • Programmable unipolar and bipolar current measurement ranges.
  • Single SAR ADC shared across eight input channels.
  • Channel-to-earth isolation rather than individual channel-to-channel isolation.
  • Channel-to-COM overvoltage protection up to ±30 V on one channel at a time.
Verified specifications

Technical data

Verified product specifications.

Analog input channels8 channels
ADC resolution16 bits
ADC typeSuccessive approximation register (SAR)
Nominal input ranges−20 to +20; 0 to 20 mA
Maximum sample rate200; 192 with R Series Expansion chassis kS/s
Minimum conversion time5; 5.2 with R Series Expansion chassis µs
Channel-to-channel isolationNone
Operating temperature−40 to +70 °C
Front connection for 779516-02Screw terminal
Conformal coating for 779516-02Yes
Condition & included items

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Compatibility

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National Instruments

Manufacturer

C Series

Module family and chassis interface

NI-9203

Current input module

System platforms

CompactDAQ and CompactRIO; consult NI's hardware compatibility matrix for controller and programming-mode support.

Confirm the module part number, terminal style, and chassis/software support before integration.
Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI-9203 Product Page and Variant ComparisonProduct Page · ni.com
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NI-9203 SpecificationsSpecifications · ni.com
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NI 9203 Getting Started GuideGetting Started Guide · download.ni.com
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C Series Module and CompactDAQ/CompactRIO Hardware CompatibilityTechnical resource
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Shipping, warranty & returns

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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Does the NI-9203 sample all channels simultaneously?

No. Its inputs share a single ADC through a multiplexer; 200 kS/s is not a simultaneous per-channel rating.

Which current ranges are programmable?

The nominal ranges are ±20 mA and 0–20 mA.

What distinguishes part number 779516-02?

NI identifies 779516-02 as the conformally coated screw-terminal NI-9203. The non-coated screw-terminal version is 779516-01.

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