The NI SH68-C68-S is a 2-meter shielded cable assembly that connects 68-pin VHDCI devices to 68-pin .050 Series D-Type accessories. Engineered with 34 twisted pairs and comprehensive shielding, it maintains signal integrity across data acquisition, switching, motion control, and general I/O applications where noise rejection and reliable connectivity are essential.
Technical Specifications
Electrical Performance
• Differential impedance: 132 Ω ±10 Ω (TDR)
• Propagation delay: 1.45 ±0.05 ns/ft
• Mutual capacitance: 12.5 pF/ft (maximum)
• Voltage rating: 300 V
• Current rating: 2 A
• Insulation resistance: 1000 MΩ minimum
Construction
• 34 twisted pairs for differential signaling and EMI suppression
• Shielded cable with 30 AWG signal and power conductors
• Outer diameter: 0.380 inches
• Minimum bend radius: 4.6 inches
• Length: 2 meters
Connectors
• Source: 68-pin VHDCI male (0.8 mm pitch)
• Destination: 68-pin .050 Series D-Type
– Key Features
• Twisted-pair construction minimizes crosstalk and maintains signal fidelity over extended runs
• Shielding reduces radiated emissions and susceptibility to external interference
• Controlled impedance (132 Ω differential) suits high-speed digital and analog signals
• Low propagation delay enables precise timing in synchronous applications
• 300 V rating accommodates mixed-signal environments with diverse voltage levels
– Typical Applications
Motion control systems, switching matrices, multifunction data acquisition, and PXI/PCI instrumentation requiring galvanic isolation and signal integrity at distances up to 2 meters.
– Compatibility & Integration
NI-73xx and PXI Motion Controllers, PCI motion controllers, NI-6723 multifunction I/O systems, UMI-7764, and compatible PXIe analog output modules (PXIe-6738, PXIe-6739).
