The NI SCXI-1130 is a high-density reed relay multiplexer/matrix switch module designed for SCXI chassis-based data acquisition systems. It delivers flexible signal routing across 256 channels with software-configurable topologies—functioning as a multiplexer, matrix, or independent switch bank. Reed relay technology enables switching speeds up to 900 operations per second, approximately ten times faster than standard armature relays, making it ideal for automated test equipment and high-speed data logging applications requiring deterministic scanning and rapid signal switching.
Technical Specifications
• Switch Type: Reed relay multiplexer/matrix switch
• Channel Count: 256 channels
• Maximum Switching Voltage: 60 VDC
• Maximum Switching Current: 0.4 A
• Maximum Switching Power: 10 W per channel
• Path Resistance: Typically low; may rise above 3 Ω at end of relay life (rhodium contact material)
• Scanning Speed: Up to 900 operations per second
• Minimum Pulse Width: 150 ns
• Scan List Capacity: 32,000 steps
• Dimensions: 19.8 × 3.0 × 17.3 cm (7.8 × 1.2 × 6.8 in.)
• Weight: 1.020 kg (2 lb. 4 oz.)
• Operating Temperature: 0 °C to 55 °C
• Storage Temperature: –20 °C to 70 °C
• Relative Humidity: 5% to 85% non-condensing
• Maximum Altitude: 2,000 m
• I/O Connectors: 2 × 176-pin docking station plug connectors
– Key Features
• Multiplexer topologies: 256×1 (1-wire), 128×1 (2-wire), 64×1 (4-wire), or 16 banks of 16×1
• Matrix topologies: 4×64 (1-wire), 8×32 (1-wire), 4×32 (2-wire)
• Independent relay control for custom switching configurations
• High-speed operation: ten times faster than armature relays
• Deterministic scanning with 32,000-step capacity
• Low path resistance maintained throughout relay lifetime
– Compatibility & Integration
• Designed for SCXI chassis-based systems
• Compatible with SCXI-1377, SCXI-1378, and SCXI-1379 terminal blocks
• Expansion cables support external row/column linking for matrix configurations
• Suitable as front-end for high-speed measurement instruments
