Connector & Wiring Configuration

• Front Port 1: 68-pin male labeled FROM DAQ BOARD/PREVIOUS CHASSIS
• Front Port 2: 68-pin male labeled TO NEXT CHASSIS for daisy-chain extension
• Rear Internal Port: 50-pin male breakout connector for signal tapping
• Rear Mounted Port: 50-pin female bracket connector mating with SCXI module rear panel
• Mounting restriction: Occupies rear interface space of two adjacent SCXI slots

System Cascading Specifications

• Max cascaded chassis quantity: 8 SCXI chassis per DAQ device
• Max total shielded cable length: 10 m for reliable signal synchronization
• Matching terminal accessory: SCXI-1349 (only for the last chassis in the chain)
• Mandatory chassis setup: Independent unique chassis address via front DIP switches

Compatibility Exclusion List

• Supported DAQ: All 68-pin NI E-Series DAQ boards (except 61XXE series)
• Supported Chassis: SCXI-1000 (Rev K+), SCXI-1001 AC-powered chassis
• Incompatible Modules: SCXI-1127, 1128, 1190, 1191 high-speed switching modules
• Compatible Host: PCI/PXI DAQ controllers, no direct USB standalone support

Key Electrical Specifications

• Device type: Fully passive adapter, no external power required
• Shielding performance: <-90 dB crosstalk attenuation at 1 MHz
• Signal bandwidth: DC to 2 MHz full-range signal pass-through
• Insulation withstand: 500 Vrms channel-to-shield one-minute isolation
• Contact material: Gold-plated phosphor bronze for long-term anti-oxidation

Mechanical & Environmental Specifications

• Mounting method: Rear panel screw fixed mounting for SCXI chassis
• Housing: EMI-tight zinc alloy shielded shell
• Operating temperature: 0℃ ~ +55℃
• Humidity: 10%–90% non-condensing

Software Compatibility

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

Pros & Limitations

• Pros: Passive lossless signal transmission, full EMI shielding, standard daisy-chain expansion, low failure rate, compatible with mainstream SCXI analog modules
• Limitations: Incompatible with partial high-speed switching modules, limited cable length, cannot be used as standalone terminal breakout