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SCXI-1142 In Stock | Ships Today

Q: Is the Lowpass Filter Input Module good for antialiasing applications?

Yes, the SCXI-1142 is ideal for antialiasing applications.

Q: What filter types are available on the NI SCXI-1142?

There are three filter types: Elliptical, Bessel, or Butterworth. The 8th-order Bessel filters, which maintain signal phase integrity. Bessel filters are ideal for applications requiring simultaneous sampling.

SCXI-1142, 8 Differential Channels, DC Input Coupling, Lowpass Filter Input Module

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SCXI-1142 National Instruments Lowpass Filter Input Module | Apex Waves | Image

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✔ NIST Calibration Available

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" Very responsive and helpful, competitive pricing. Good source! "

July 2025

Andrew Gar**** Verified Buyer

" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "

March 2025

Said Sai**** Verified Buyer

" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "

January 2025

Bob C**** Verified Buyer

" Jason was able to get our emergency situation taken care of quickly and professionally. "

May 2025

Gregg Flecki**** Verified Buyer

" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "

January 2025

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Carol Zimme**** Verified Buyer

" Very responsive and helpful, competitive pricing. Good source! "

July 2025

Andrew Gar**** Verified Buyer

" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "

March 2025

Said Sai**** Verified Buyer

" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "

January 2025

Bob C**** Verified Buyer

" Jason was able to get our emergency situation taken care of quickly and professionally. "

May 2025

Gregg Flecki**** Verified Buyer

" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "

January 2025

National Instruments SCXI-1142 Lowpass Filter Input Module

The NI SCXI-1142 (Part Number: 776572-42) module is suitable for antialiasing applications and can also be used for general-purpose signal amplification and filtering. This module has a Bessel filter response, eight channels, and works with National Instruments E/M Series DAQ instruments. Multiplexed and parallel modes are the two modes of operation available on this module.

The 8^th-order Bessel filters on the SCXI-1142 preserve signal phase integrity and are well-suited for applications that entail simultaneous sampling. The filters are a combination of SCFs and continuous-time filters (CTFs). SCF technology allows the cutoff frequency to be configured via software with ease. Although, SCFs are sampling systems and are therefore subject to the same aliasing effects as digitizers. The hybrid design utilizes a CTF prefilter to stop aliasing in the SCF and CTF postfilter to recreate the sampled waveform.

The SCXI 1142 Lowpass Filter Input Module has calibration hardware to get rid of error sources. Software-programmable analog switches can ground the inputs of the instrumentation amplifiers for offset error calibration with the use of automatic input zeroing. With the use of an external reference voltage, the user can calibrate the module to their specific operating environment. Also, DC compensation circuits eradicate the offset errors of the filters. This ensures great DC preciseness, despite whether lowpass filtering is activated. An onboard EEPROM saves the calibration constants in the permanent memory, which cannot be altered by the user. NI-DAQ transparently utilizes the calibration constants to adjust for gain mistakes.

SCXI-1142 Obsolete Status has been announced by National Instruments, but the module will still be available for purchase and repairs by Apex Waves.

Model	SCXI-1142
Manufacturer	National Instruments
Part Number	776572-42
Type	Lowpass Filter Input Module
Channels	8
Input Range	±5 V
Output Range	±5 V
Input Coupling	DC
Dimensions	1.2 by 6.8 by 8.0 in.
Warranty	2-3 Year Warranty
SCXI-1142 Manual	User Manual and Maintenance Manual Available for Download
Price	Contact a sales representative for a quote.

Associated part numbers for SCXI-1142:

National Instruments SCXI-1142 Frequently Asked Questions

Question: What are the I/O Connectors for the SCXI-1142?

Answer: The rear I/O connector of the module is a 50-pin male ribbon-cable, while the front connector is a 96-pin DIN C male.

Question: What is the programmable gain per channel for the SCXI-1142?

Answer: The programmable gain per channel is ±50 mV to ±5 V input range.

Question: Is the Lowpass Filter Input Module good for antialiasing applications?

Answer: Yes, the SCXI-1142 is ideal for antialiasing applications.

Question: What filter types are available on the NI SCXI-1142?

Answer: There are three filter types: Elliptical, Bessel, or Butterworth. The 8th-order Bessel filters, which maintain signal phase integrity. Bessel filters are ideal for applications requiring simultaneous sampling.