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Description
Application Scenarios
A U.S.aerospace component manufacturer faced a critical challenge:testing the temperature distribution of jet engine turbine blades required 16 simultaneous,high-precision measurements—but their existing DAQ system had only 8 channels and suffered from electrical noise,leading to inconsistent data.After integrating the NI SCXI-1125 into their SCXI-1000 chassis,the manufacturer achieved a breakthrough:the SCXI-1125’s 16 differential channels captured temperature data from 16 embedded sensors with 16-bit resolution,eliminating cross-talk from factory machinery.Its 100kS/s sampling rate also enabled real-time tracking of temperature spikes during engine tests,allowing engineers to validate blade durability 30%faster than before.
This case addresses two key pain points in complex testing:limited channel count and noise interference.The SCXI-1125 doesn’t just collect data—it delivers actionable insights that accelerate product development and ensure safety.
Parameter
Main Parameters
Value/Description
Product Model
National Instruments SCXI-1125
Manufacturer
National Instruments(NI)
Product Category
16-Channel Analog Input Module(SCXI Platform)
Input Channels
16 differential analog inputs(expandable via SCXI chassis)
Resolution
16 bits(ensures high measurement precision)
Input Voltage Range
±10V(standard);configurable for lower ranges via software
Sampling Rate
100kS/s(per channel,single-ended);50kS/s(differential)
Input Impedance
100MΩ(minimizes signal loading from sensors)
Noise Performance
≤50μV p-p(low noise for accurate low-level signal capture)
Operating Temperature Range
-40℃~+70℃(industrial-grade for harsh test environments)
Compatibility
Works with NI SCXI chassis(e.g.,SCXI-1000,SCXI-1001)and DAQ devices
Communication Interface
SCXIbus(for data transfer to DAQ cards/computers)
Physical Dimensions
160mm×100mm×25mm(fits standard SCXI chassis slots)
Weight
Approx.200g(lightweight for chassis integration)
Software Compatibility
NI LabVIEW,LabWindows/CVI,Measurement Studio
Protection
Overvoltage protection(up to±30V)for sensor and module safety
Technical Principles and Innovative Values
Innovation Point 1:16 Differential Channels for Noise Immunity
Unlike single-ended input modules(which pick up noise from nearby power lines),the SCXI-1125 uses differential inputs to reject common-mode noise—critical in factories or labs with heavy electrical equipment.A automotive testing lab reported that switching to the SCXI-1125 reduced measurement noise by 75%when testing battery voltage fluctuations,leading to more reliable battery life predictions.
Innovation Point 2:Seamless SCXI Platform Integration
The SCXI-1125 works with NI’s SCXI chassis to expand channel count—one SCXI-1000 chassis can hold up to 8 SCXI-1125 modules,delivering 128 simultaneous analog inputs.This scalability eliminated the need for multiple DAQ systems at a pharmaceutical lab,cutting equipment costs by 40%while doubling their testing capacity.
Innovation Point 3:Plug-and-Play Software Integration
With native support for NI LabVIEW,the SCXI-1125 requires no custom drivers—engineers can configure channels,set sampling rates,and visualize data in minutes.A university research team studying renewable energy used LabVIEW and the SCXI-1125 to monitor solar panel output,reducing setup time from 8 hours to 1 hour and accelerating their research timeline by 2 months.
Application Cases and Industry Value
Case 1:Industrial Pressure Sensor Calibration
A German manufacturing company used the SCXI-1125 to calibrate 16 pressure sensors simultaneously for its hydraulic systems.Key results after 6 months:
Calibration accuracy improved from±0.5%to±0.1%(thanks to 16-bit resolution),reducing sensor rejection rates by 90%.
Testing time per sensor dropped from 15 minutes to 5 minutes,allowing the company to calibrate 3x more sensors daily.
Data logging via LabVIEW created a digital audit trail,ensuring compliance with ISO 9001 standards and reducing documentation errors.
Case 2:Biomedical Research
A U.S.university’s biomedical lab integrated the SCXI-1125 into its neurophysiology setup to record electrical signals from 16 brain electrodes.Outcomes:
Low noise performance(≤50μV p-p)captured faint neural signals that were previously undetectable.
Real-time data streaming to LabVIEW enabled researchers to correlate neural activity with behavior,leading to a published study on motor control.
These cases demonstrate the SCXI-1125’s cross-industry versatility:it enhances accuracy in manufacturing,accelerates research in academia,and ensures compliance in regulated fields.
Related Product Combination Solutions
NI SCXI-1000:8-Slot SCXI Chassis–Holds up to 8 SCXI-1125 modules for expanded channel count(128 inputs total).
NI USB-6251:DAQ Device–Transfers data from the SCXI-1125 to a computer via USB,ideal for portable testing.
NI LabVIEW:Programming Software–Configures the SCXI-1125,visualizes data,and automates test sequences.
NI SCXI-1327:Terminal Block–Provides easy sensor wiring to the SCXI-1125,reducing installation time.
NI SCXI-1102:Thermocouple Input Module–Complements the SCXI-1125 for temperature measurements(works in the same chassis).
NI PXIe-1071:PXI Chassis–For high-speed applications,pairs with the SCXI-1125 via an SCXI-to-PXI adapter.
NI 9205:C Series Analog Input Module–Offers similar functionality to the SCXI-1125 for compact DAQ systems(alternative for space-constrained setups).
NI Measurement Studio:.NET Development Tools–Enables C#/VB programmers to integrate SCXI-1125 data into custom applications.
These products form a complete DAQ ecosystem,maximizing the SCXI-1125’s flexibility for diverse testing needs.
Installation,Maintenance,and Full-Cycle Support
Installation and Commissioning:Installing the SCXI-1125 is straightforward—slide the module into an empty slot of an NI SCXI chassis(e.g.,SCXI-1000),secure it with screws,and connect sensors via a terminal block(e.g.,SCXI-1327).Our team assists with software setup:installing NI-DAQmx drivers,configuring channels in LabVIEW,and validating measurements with a calibration signal.A typical single-module installation takes under 1 hour,with no specialized tools required.
Maintenance and Fault Handling:Routine maintenance is minimal—quarterly checks involve inspecting terminal block connections for corrosion and cleaning chassis vents to prevent overheating.The SCXI-1125 includes built-in self-test diagnostics:if a channel fails,LabVIEW alerts users with a specific error code(e.g.,”Channel 3 Overvoltage”),enabling fast troubleshooting.Spare parts(e.g.,fuses,terminal blocks)are globally available,with 24-hour shipping to minimize downtime.
Full-Cycle Support:We supply genuine NI SCXI-1125 modules with a 2-year warranty.Our technical team(NI-certified engineers)offers 24/7 support via phone,email,or remote access—whether you need help with channel configuration,noise reduction,or software integration.For long-term projects,we provide calibration services(ISO 17025 accredited)to ensure the SCXI-1125 maintains 16-bit accuracy throughout its 10+year lifespan.
Call to Action
If you need high-resolution,multi-channel data acquisition for lab research,industrial testing,or quality control,the NI SCXI-1125 delivers the precision and reliability you demand.Contact us today to discuss your specific measurement needs—our team will design a customized DAQ solution that integrates the SCXI-1125 with chassis,software,and accessories,helping you turn data into insights faster than ever.
