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National Instruments · SCXI

SCXI-1125

The National Instruments SCXI-1125 is an eight-channel isolated signal conditioning module for SCXI systems, with software-selectable gain and filtering.

ManufacturerNational Instruments

ModelSCXI-1125

Part Number776572-25

Product Type8-channel isolated analog input signal conditioning module

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Inputs8 differential channels

Gain12 programmable settings, 1 to 2000

Lowpass filtering4 Hz or 10 kHz per channel

Working isolation300 Vrms

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Overview

Product overview

Key product information and technical features.

Designed for conditioning and isolation of thermocouple, millivolt, voltage and current signals, the SCXI-1125 multiplexes its channels into a single input of a controlling DAQ device.

The module's native input ranges extend from ±2.5 mV to ±5 V. Higher-voltage measurements require an appropriate attenuating terminal block; ±300 V is not the native input range.

Jumperless configuration of channel gain and filters.
Individually configurable lowpass filters for each input channel.
Multiplexed and parallel operating modes.

Verified specifications

Technical data

Verified product specifications.

Differential input channels	8 channels
Native input ranges	±2.5 mV to ±5 V
Programmable gain settings	1, 2, 5, 10, 20, 50, 100, 200, 250, 500, 1000, 2000 V/V
Selectable lowpass filter	4 Hz or 10 kHz
Working isolation	300 Vrms

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National Instruments

Manufacturer

SCXI

Signal conditioning platform

SCXI-1125

Isolated analog input conditioning

System integration

Requires an SCXI system and controlling DAQ device.

Select the terminal block for the required voltage range and measurement category; isolation voltage is not the native signal range.

Manuals & software

Technical resources

Manuals, software and technical resources for this model.

SCXI-1125 User Manual and SpecificationsUser Manual And Specifications · download.ni.com

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NI SCXI-1125 Product PageManufacturer Product Page · ni.com

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SCXI-1313A Terminal Block Installation Guide and SpecificationsAccessory Installation Guide · download.ni.com

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NI-DAQmx 18.0 Readme — Supported HardwareTechnical resource

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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Can the SCXI-1125 measure ±300 V directly?

No. Native ranges reach ±5 V. The manual specifies ±300 V operation with the SCXI-1327 attenuating terminal block, subject to its connection and safety requirements.

Is NI-DAQmx support documented?

NI lists the SCXI-1125 in the NI-DAQmx 18.0 supported modules. This establishes support for that release, not universal compatibility with later drivers or operating systems.