The National Instruments SCXI-1163R is a 32-channel optically isolated solid-state relay switch module for SCXI systems operating in electrically noisy environments. It provides galvanic isolation between the host computer and switched circuits, eliminating common-mode voltages, ground loops, and voltage transients. The module operates in serial mode over the SCXIbus or in parallel mode when directly connected to compatible digital I/O devices, delivering 32 Form A relays organized in 8 banks with individual common poles.
Technical Specifications
• Channels: 32 optically isolated solid-state relays, Form A (normally open)
• Bank Configuration: 8 banks of 4 relays; each bank shares one common pole
• Switching Capacity: 240 VAC/VDC maximum, 200 mA maximum
• Isolation: 300 Vrms per bank
• Maximum Working Voltage: 450 V
• Leakage Current: 1 μA maximum
• Actuation Timing: 15 ms typical operate time, 15 ms typical release time; commands accepted every 2 μs minimum interval
• Relay Life (No Load): 5×10⁶ mechanical operations
• Relay Life (5 W @ 50 Ω): 5×10⁶ electrical operations
• Relay Life (Maximum Capacity): 1×10⁵ electrical operations
• Operating Temperature: 0 to 50 °C
• Dimensions: 3.0 cm × 17.3 cm × 19.6 cm
• Weight: 625 g
– Key Features
• 300 Vrms isolation per bank eliminates ground loop issues
• Dual-mode operation: SCXIbus serial or direct parallel control
• Parallel compatibility with DIO-24 (24 relays), DIO-32F, or DIO-96 (all 32 relays)
• 48-pin DIN C connector; screw terminal connection via optional SCXI-1326
• UL and CE certified
• Included NI-SWITCH driver software
– Typical Applications
Industrial switching, laboratory test automation, power distribution switching, signal routing in high-noise environments.
– Compatibility & Integration
Controls via LabVIEW, LabWindows/CVI, Measurement Studio, NI Switch Executive, Visual Basic, or C/C++. Compatible with National Instruments MIO boards, SCXI-1200 module, and legacy Lab-series boards. Requires shielded cabling for EMC compliance.
