Product Overview
The SCXI-1121 is a high-precision analog input module designed to excel in data acquisition and signal conditioning for industrial and laboratory automation systems. As a critical component in measurement setups, it specializes in converting low-level analog signals from sensors—such as thermocouples, pressure transducers, and strain gauges—into digital data for processing by control systems. Renowned for its accuracy and stability, the SCXI-1121 is widely used in industries like aerospace testing, automotive engineering, and pharmaceutical research. Core features include high-resolution signal conversion, built-in signal conditioning, and flexible channel configuration, ensuring reliable performance even with weak or noisy input signals. Whether integrated into a distributed data acquisition system or a standalone test rig, the SCXI-1121 delivers consistent results, making it a trusted choice for precision measurement applications.
Technical Specifications
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Parameter
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Value
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Product Model
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SCXI-1121
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Manufacturer
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NI
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Product Type
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Analog Input Module (Signal Conditioning)
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Input Voltage
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±10V DC
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Resolution
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16-bit
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Operating Temp
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0°C to 55°C
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Number of Channels
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8 differential / 16 single-ended
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Communication
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SCXIbus interface
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Key Features and Benefits
The
SCXI-1121 stands out for its exceptional measurement accuracy, with a total error of less than 0.01% of full scale, ensuring precise data capture for critical applications like material stress testing or environmental monitoring. Its built-in signal conditioning eliminates the need for external amplifiers or filters, simplifying system design and reducing signal degradation caused by long cable runs.
Flexibility is a major advantage: the module supports both differential and single-ended input configurations, allowing users to adapt to various sensor types and wiring setups. This versatility makes it suitable for mixed-signal environments where multiple measurement types (e.g., temperature, pressure, voltage) need to be captured simultaneously.
Robust noise rejection is another key feature, with a common-mode rejection ratio (CMRR) of 100 dB at 50/60 Hz, minimizing interference from industrial electrical noise—a critical capability in factory floors or labs with high electromagnetic activity. The SCXI-1121 also includes overvoltage protection, safeguarding the module and connected equipment from accidental voltage spikes up to ±30V.
Installation and integration are streamlined thanks to its compatibility with standard SCXI chassis systems, enabling easy expansion by adding additional modules for increased channel count or mixed signal types.
Related Models
- SCXI-1122 – Higher-resolution variant (18-bit) with extended temperature range (-40°C to 70°C) for extreme environment testing.
- SCXI-1120 – Previous generation model (12-bit resolution) with basic signal conditioning, ideal for cost-sensitive applications.
- SCXI-1121-HV – High-voltage version supporting input ranges up to ±300V, designed for power system monitoring.
- SCXI-1123 – Isolated channel model with 2500V DC isolation between channels, suitable for high-voltage or noisy industrial environments.
- SCXI-1121-LP – Low-power version (≤3W) optimized for battery-operated portable data acquisition systems.
We provide a one-year warranty for the
SCXI-1121, supported by expert pre-sales guidance to help configure the module for specific measurement needs and responsive after-sales support for troubleshooting. Our team of measurement specialists ensures seamless integration into your data acquisition setup. For more details or to inquire about other models, contact us via WhatsApp: [
https://wa.me/+86 19389860630] or email:
jllucky33@qq.com.
