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National Instruments · SCXI

SCXI-1141

The National Instruments SCXI-1141 is an eight-channel programmable elliptic lowpass filter module for SCXI anti-aliasing applications. It provides a common cutoff setting with independently selectable filter bypass for each channel.

ManufacturerNational Instruments

ModelSCXI-1141

Part Number776572-41

Product Type8-channel programmable elliptic lowpass filter input module

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Inputs8 differential channels

Filter cutoff range10 Hz to 25 kHz

Channel gains1, 2, 5, 10, 20, 50, 100

Operating modesMultiplexed or parallel

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Overview

Product overview

Key product information and technical features.

The SCXI-1141 conditions analog signals using elliptic lowpass filtering ahead of data acquisition. Its software-selectable gain is configured per channel, while the filter cutoff is configured for the module.

NI also documents cascaded configurations that combine SCXI-1120 or SCXI-1121 signal conditioning with SCXI-1141 filtering. These arrangements require the specified cascading cables, DAQ hardware, and software configuration.

Software-selectable gain on each input channel.
Elliptic lowpass filtering with a 10 Hz to 25 kHz cutoff range.
Supports both multiplexed and parallel operation.
External clock input and output support tracking-filter applications.

Verified specifications

Technical data

Verified product specifications.

Differential input channels	8 channels
Filter response	Elliptic lowpass
Programmable cutoff frequency	10 to 25000 Hz
Gain settings	1, 2, 5, 10, 20, 50, 100; software-selectable per channel V/V
Input voltage range	±5 V
Operating modes	Multiplexed and parallel
Cutoff configuration	Shared across all channels
Filter bypass	Software-selectable per channel

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National Instruments

Manufacturer

SCXI

Signal-conditioning platform

SCXI-1141

Programmable lowpass filtering stage

Cascading hardware

NI documents SCXI-1352 cable assemblies for connecting SCXI-1120 or SCXI-1121 outputs to SCXI-1141 inputs.

Check the documented DAQ, driver, cable, gain, and scaling requirements before configuring a cascaded system.

Manuals & software

Technical resources

Manuals, software and technical resources for this model.

SCXI-1141 Official Product PageProduct Page · ni.com

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LabVIEW Function and VI Reference Manual — SCXI Hardware CharacteristicsArchived Reference Manual · download.ni.com

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Cascading SCXI ModulesApplication And Configuration Guide · ni.com

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NI SCXI Cascading: Hardware Installation and ConfigurationTechnical resource

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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Can each channel use a different cutoff frequency?

No. All channels share the cutoff frequency, but the lowpass filter can be bypassed independently on each channel.

What gain settings are supported?

The supported gains are 1, 2, 5, 10, 20, 50, and 100, selected through software per channel.

Can the SCXI-1141 be used with an SCXI-1120?

Yes. NI documents cascading an SCXI-1120 into the SCXI-1141 using the SCXI-1352 R1650 cable assembly. The DAQ connection, software settings, input ranges, and scaling must follow the documented configuration.