The NI 9939 Strain Relief Kit is a backshell accessory that secures cable connections to National Instruments C Series modules while protecting operators from high-voltage signals. This kit provides strain relief by holding cables in the correct position, preventing damage and maintaining signal integrity across 16-position terminal connections.
Technical Specifications
• Product Type: Backshell Kit
• Manufacturer: National Instruments
• Part Numbers: 785082-01 (spring terminal), 192692-01 (screw terminal), 192692A-01
• Connector Compatibility: 16-position screw terminal or 16-position spring terminal connector blocks
• Wire Gauge Range: 30 AWG to 14 AWG
• Wire Insulation Strip Length: 6 mm (0.24 in.)
• Maximum Wire Diameter (all terminals used): 2.3 mm (0.09 in.) including insulation
• Weight: Approximately 0.02 kg
– Key Features
• Encloses and secures terminal connections with integrated backshell design
• Shields operators from high-voltage signal exposure
• Accepts industry-standard wire gauges from 30 AWG to 14 AWG
• Maintains cable strain relief and correct positioning throughout signal transmission
• Two part number variants: screw terminal (192692-01) and spring terminal (785082-01) configurations
– Typical Applications
• Integration with NI-9485, NI-9924, NI-9928, NI-9436, and NI-9217 modules
• Cable protection in high-voltage measurement and signal conditioning systems
• Operator safety in systems requiring electrical isolation
– Compatibility & Integration
The NI 9939 kit mounts directly to all 16-position screw terminal and 16-position spring terminal connector blocks. It is not recommended for DSUB connectors. Select the appropriate part number based on your terminal type: 192692-01 for screw terminals or 785082-01 for spring terminals.
