NI SCXI-1130

Product Name 256-Channel Reed Relay Multiplexer/Matrix Switch Module

Product Introduction The SCXI-1130 is a high-density, multi-configuration reed relay switch module for SCXI systems. It supports multiple multiplexer and matrix topologies, providing flexible signal routing solutions for large-channel-count data acquisition and test systems.

Category:
Description

Functional Features

  • 256-channel reed relay switching capacity
  • Multiple multiplexer configurations: 256×1 (1-wire), 128×1 (2-wire), 64×1 (4-wire), 16 banks of 16×1 (1-wire)
  • Multiple matrix configurations: 4×64 (1-wire), 8×32 (1-wire), 4×32 (2-wire)
  • Field-replaceable rhodium-contact reed relays
  • Two 176-pin docking station front panel connectors
  • Immediate relay scanning capability

Technical Specifications

  • Brand: National Instruments
  • Model: SCXI-1130
  • Product Type: Multiplexer/Matrix Switch Module
  • Relay Type: Reed relay with rhodium contact material
  • Maximum Switching Voltage: 60 VDC, 30 VAC (CAT I, channel-to-channel and channel-to-ground)
  • Maximum Current: 0.4 A per terminal or internal path
  • Maximum Switching Power: 10 W per channel (resistive load)
  • Power Requirements: +5 VDC @ 50 mA; +18.5 VDC to +25 VDC @ 170 mA; -18.5 VDC to -25 VDC @ 170 mA
  • Dimensions: 19.8 × 3.0 × 17.3 cm (7.8 × 1.2 × 6.8 in)
  • Weight: 1,020 g (2 lb 4 oz)

Application Scenarios

  • Large-scale multi-channel data acquisition systems
  • Automated test and measurement setups
  • Signal routing and switching in industrial test stands
  • Laboratory instrumentation switching systems
  • Battery testing and component validation systems

Working Principle The module uses reed relays to switch signal paths between input terminals and the common output line. Relays are controlled via SCXIbus commands to configure different topologies, enabling flexible signal routing for multiplexed measurement or matrix switching applications.

Installation Requirements

  • Install in standard SCXI chassis slots
  • Connect signal wiring via compatible front-panel docking connectors
  • Ensure power supply voltages meet specified ranges
  • Configure switch topology via NI-DAQmx or LabVIEW software

Usage Notes

  • Do not exceed maximum switching voltage, current and power ratings
  • Replace failed relays with specified replacement parts
  • Minimize switching frequency to extend relay service life
  • Follow ESD protection procedures during handling and installation
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