Slot & Backplane Configuration

• 12 standard single-width SCXI module slots, including 1 dedicated slot 0 for host controller
• 3 shared differential guarded analog buses across all slave slots
• 2 universal open-collector trigger lines (TRIG0, TRIG1) for synchronous sampling
• Independent slot-select and scan-control lines for individual module addressing
• Front-panel manual reset button for global module reboot

Power Supply Ratings

• AC input range: 100–240 VAC, 47–63 Hz universal mains input
• Positive analog supply (+V): 2.04 A @ +18.5 ~ +25 V
• Negative analog supply (–V): 2.04 A @ –18.5 ~ –25 V
• Digital supply (+5 V): 600 mA, maximum 50 mVpp ripple
• Backplane fuse rating: 4 A overcurrent protection for analog power rails

Bus Electrical Parameters

• Trigger line pull-up resistance: 1.2 kΩ (optimized for long cable anti-interference)
• Analog bus guard shielding: Floating guarded traces isolating analog signals
• Max bus capacitive load: 20 pF for all digital trigger lines
• Maximum single-module power dissipation limit: 9 W for thermal safety

Key Electrical Specifications

• Backplane isolation: Chassis-to-circuit isolation rated at 1500 Vrms
• Bus signal delay: Max 250 ns for open-collector trigger signals
• Leakage current: <0.5 mA under normal operating conditions
• EMC compliance: CE, FCC Class A industrial electromagnetic certification
• Cooling mode: Passive convection + rear auxiliary airflow ventilation

Mechanical & Environmental Specifications

• Dimension: 432 × 178 × 356 mm, standard 19-inch rack-mount form factor
• Operating temperature: 0℃ ~ +55℃
• Storage temperature: -40℃ ~ +85℃
• Humidity: 10%–90% non-condensing

Software & Module Compatibility

• Compatible controllers: SCXI-1600, PCI/PXI SCXI bus adapters
• Compatible modules: All SCXI 11xx series conditioning modules, 13xx terminal blocks
• Supported drivers: NI-DAQmx, Traditional NI-DAQ
• Supported software: LabVIEW, LabWindows/CVI, Python DAQmx, C#

Pros & Limitations

• Pros: Higher current capacity than SCXI-1000, enhanced trigger anti-interference, universal AC input, 12-slot high-density expansion, rack-mountable for industrial cabinets
• Limitations: No DC direct input version, larger physical footprint, not applicable for portable desktop miniature testing