Slot & Backplane Configuration

• 4 standard single-width SCXI module slots, including dedicated slot 0 for bus controller
• 3 shared guarded differential analog buses across all slave slots for multiplexed routing
• 2 open-collector universal trigger lines (TRIG0/TRIG1) for synchronous sampling
• 1.5 kΩ trigger line pull-up resistors (different from 1.2 kΩ on SCXI-1001)
• Backplane integrated slot address coding switches for multi-chassis cascading

Power Supply Ratings

• Universal AC input range: 90–264 VAC, 47–63 Hz, seven regional voltage preset modes
• Positive analog rail (+V): 1.3 A @ +18.5 ~ +25 V
• Negative analog rail (–V): 1.3 A @ –18.5 ~ –25 V
• Digital supply (+5 V): 400 mA with <35 mVpp output ripple
• Internal overcurrent protection: 2.5 A self-recovering fuse for analog power rails

Bus Electrical & Noise Parameters

• Backplane inherent noise: <1.2 µVrms within 100 kHz bandwidth, lower than SCXI-1001
• Chassis-to-circuit isolation: 1500 Vrms one-minute dielectric withstand
• Analog bus guard shielding: Floating guard layer to eliminate ground loop noise
• Max single-module power dissipation limit: 7 W per slot for thermal safety

Key Electrical Specifications

• Max cascading quantity: 8 chassis on one single DAQ host via SCXI-1346 adapter
• Max total inter-chassis cable length: 10 meters for synchronous signal timing
• Leakage current: <0.35 mA under normal operating conditions
• EMC compliance: CE, FCC Class B (low-noise desktop grade, vs Class A for SCXI-1001)
• Cooling mode: Pure passive natural convection, no fan airflow noise

Mechanical & Environmental Specifications

• Dimension: 432 × 178 × 229 mm, half-depth 19-inch rack mountable
• Operating temperature: 0℃ ~ +60℃
• Storage temperature: -40℃ ~ +85℃
• Humidity: 10%–90% non-condensing, maximum working altitude 2000 m

Compatibility Matching List

• Matching expansion accessory: SCXI-1346 cascading adapter, SCXI-1349 terminal terminator
• Compatible controllers: SCXI-1600 USB controller, PCI/PXI SCXI bus adapters
• Compatible modules: All SCXI 11xx signal conditioning, 13xx terminal block series
• Official status: Obsolete, only aftermarket replacement inventory available

Software Compatibility

• Drivers: NI-DAQmx, Traditional NI-DAQ legacy drivers
• Configuration tools: NI Measurement & Automation Explorer (NI MAX)
• Supported software: LabVIEW, LabWindows/CVI, Python DAQmx, C#

Pros & Limitations

• Pros: Desktop low-noise design, fanless zero acoustic noise, compact footprint, Class B EMI certification for laboratory use, flexible multi-region AC voltage configuration, low ground-loop interference
• Limitations: Only 4 slots with limited expansion capacity, lower analog power output than SCXI-1001, cannot support high-power strain modules in parallel