The National Instruments SCXI-1161 is an 8-channel general-purpose switch module for SCXI systems featuring eight independent single-pole double-throw (SPDT) Form C non-latching electromechanical relays. Each channel provides normally closed, normally open, and common terminals for flexible signal routing and control of medium-to-high level signals. The module delivers switching capacity up to 8 A at 125 Vrms, 6 A at 250 Vrms, or 5 A at 30 VDC with a maximum switching rate of 3 operations per second and 15 ms relay operate/release time.
Technical Specifications
• Channels: 8 independent relay channels
• Relay Type: SPDT (Form C), non-latching electromechanical
• Switching Capacity: 8 A @ 125 Vrms, 6 A @ 250 Vrms, 5 A @ 30 VDC
• Maximum Switching Voltage: 250 Vrms
• Maximum Switching Rate: 3 operations per second
• Relay Response Time: 15 ms operate/release
• Contact Resistance: Very low
• Thermal Offset: Low
• Contact-to-Coil Isolation: 250 Vrms
• Common-Mode Voltage Rating: 250 Vrms working
• Operating Temperature: 0 °C to 50 °C
• Storage Temperature: –20 °C to 70 °C
• Humidity: 5% to 85% non-condensing
• Dimensions: 6.8 × 8.0 × 1.2 inches (17.2 × 20.3 × 3.0 cm)
• Weight: 12 oz (340 g)
– Key Features
• Fully isolated relay channels—each relay isolated from others and earth ground
• Software-programmable control via NI-SWITCH driver
• Three connector options: 50-pin male ribbon-cable header, 16 × 2 minicombicon header, and 24 screw terminal connectors
• Low contact resistance and thermal offset for signal integrity
– Typical Applications
• Industrial process monitoring
• Laboratory test automation
• Production testing and quality assurance
• Multi-channel signal routing and switching
– Compatibility & Integration
Fully compatible with National Instruments MIO, Lab-PC, Lab-LC, DIO-24, DIO-32F, and DIO-96 boards. Supports LabVIEW, LabWindows/CVI, Measurement Studio, NI Switch Executive, Visual Basic, and C/C++. Note: Product declared obsolete by manufacturer; availability through third-party suppliers only.
