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NI (National Instruments) · Computer-Based Device

SCXI-1127

Name: SCXI-1127
Brand: NI (National Instruments)

The NI SCXI-1127 is a high-voltage electromechanical relay module for multiplexer or matrix switching in SCXI systems. Listed under NI part number 776572-27, its switching configuration depends on the front-mounting terminal block.

ManufacturerNI (National Instruments)

ModelSCXI-1127

Part Number776572-27

Product Type32-Channel, Electromechanical Relay Matrix/Multiplexer Switch Module for SCXI

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Supported Hardware PlatformComputer-Based Device

Row AccessYes

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Overview

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The SCXI-1127 is a high-voltage armature relay module that can act as a multiplexer or matrix switch. It provides signal routing within an SCXI-based measurement system.

Multiplexer operation includes 1-wire configurations for large-channel-count systems, 2-wire configurations for differential pairs, and 3- or 4-wire modes for resistive measurements such as RTDs and thermistors.

With the appropriate SCXI front-mounting terminal block, the module can be configured as a 64 × 1 1-wire multiplexer, 32 × 1 2-wire multiplexer, 16 × 1 4-wire multiplexer, or 4 × 8 2-wire matrix.

Electromechanical armature relay switching for multiplexer or matrix operation.
Front-mounting terminal blocks determine the switching configuration.
Multiplexer modes accommodate single-wire, differential-pair and resistive measurement routing.
Row access is supported.

Verified specifications

Technical data

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Supported Hardware Platform	Computer-Based Device —
Row Access	Yes —
NI part numbers	776572-27 —

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NI

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Computer-Based Device

Supported Hardware Platform

SCXI-1127

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Product-specific questions

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Can the SCXI-1127 route RTD and thermistor measurements?

Its multiplexer modes include 3- and 4-wire routing for resistive measurements, including RTDs and thermistors. Select the appropriate terminal block and configuration for the measurement.

What NI part number is listed for this model?

The preserved catalog record lists NI part number 776572-27.