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National Instruments · SCXI

SCXI-1142

Name: SCXI-1142
Brand: National Instruments

The National Instruments SCXI-1142 is an 8-channel programmable Bessel low-pass filter module for SCXI signal-conditioning systems. It supports anti-aliasing applications with a common cutoff-frequency setting and individually selectable filter bypass.

ManufacturerNational Instruments

ModelSCXI-1142

Part Number776572-42

Product Type8-channel programmable Bessel low-pass filter module

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PlatformSCXI

Channels8

Filter responseBessel low-pass

Software-selectable cutoff10 Hz to 25 kHz

Filter bypassProgrammable per channel

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Overview

Product overview

Key product information and technical features.

The SCXI-1142 provides Bessel low-pass filtering for eight signal channels. NI identifies it as a programmable filter module for anti-aliasing applications; its filter response is model-specific rather than a selectable choice among Bessel, elliptic, and Butterworth responses.

All channels share the same cutoff-frequency setting, while filter bypass is controlled separately for each channel. External clock input and output support cutoff-frequency control in tracking-filter applications.

Eight channels of Bessel low-pass filtering.
Software-selectable cutoff frequencies from 10 Hz to 25 kHz.
Per-channel programmable filter bypass despite a shared cutoff-frequency setting.
External clock input and output for tracking-filter operation.

Verified specifications

Technical data

Verified product specifications.

Channel count	8 channels
Filter type	Bessel low-pass
Software-selectable cutoff-frequency range	10 Hz to 25 kHz
Cutoff-frequency configuration	Common setting for all channels
Filter bypass	Software-programmable per channel
External filter clock	Input and output provided

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Compatibility

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National Instruments

Manufacturer

SCXI

Signal-conditioning platform

SCXI-1142

8-channel Bessel low-pass filter module

Signal connection accessory

NI documents use of the SCXI-1305 AC/DC coupling BNC terminal block with the SCXI-1142.

Select system hardware for the SCXI platform; the catalog's PXI category alone is not evidence of direct PXI-slot compatibility.

Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI SCXI-1142 Official Product PageProduct Page · ni.com

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LabVIEW Data Acquisition Basics Manual — SCXI FilteringArchived Platform Manual · download.ni.com

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SCXI-1305 AC/DC Coupling BNC Terminal Block Installation Guide and SpecificationsAccessory Installation Guide · docs-be.ni.com

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NI-DAQmx 18.5 ReadmeDriver Support Documentation · download.ni.com

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NI Cascading SCXI Modules — Configuration and Driver ConsiderationsTechnical resource

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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Which filter response does the SCXI-1142 provide?

The SCXI-1142 provides a Bessel low-pass response. The family-level description should not be interpreted as offering selectable Bessel, elliptic, and Butterworth responses on this model.

Can each channel use a different cutoff frequency?

No. All channels must use the same cutoff-frequency setting, but the low-pass filter can be bypassed independently on each channel.

What cutoff-frequency range is software selectable?

NI documents a software-selectable cutoff-frequency range of 10 Hz to 25 kHz for the SCXI-1142.

Which BNC terminal block is documented for this module?

The SCXI-1305 installation guide explicitly covers use with the SCXI-1142, including channel connections and clock-connector configuration.