The NI SHC68-68-EPM is a 2-meter shielded digital cable engineered for high-speed signal transmission between National Instruments DAQ devices and compatible peripherals. Built with individually shielded analog input pairs and twisted-pair digital conductors, it delivers superior signal integrity in electromagnetically noisy industrial environments. The cable connects M Series and X Series data acquisition hardware to 68-pin accessories, DAQCards, and specialized instrumentation including WaveNeuro FSCV Series and legacy CBP Bipotentiostat electrochemical workstations.
Technical Specifications
Digital Twisted Pairs
• Differential Impedance: 107 Ω (nominal)
• Mutual Capacitance: 14.5 pF/ft (nominal)
• Conductor DC Resistance: 0.099 Ω/ft at 20 °C
• Time Delay: 1.55 ns/ft
• Conductor Gauge: 30 AWG
Individually Shielded Analog Input Pairs
• Differential Impedance: 66 Ω (nominal)
• Mutual Capacitance: 23.0 pF/ft (nominal)
• Conductor DC Resistance: 0.099 Ω/ft at 20 °C
• Time Delay: 0.83 ns/ft
• Conductor Gauge: 30 AWG
Power Distribution
• +5 V Lines DC Resistance: 0.040 Ω/ft at 20 °C
• +5 V Line Gauge: 26 AWG
Cable Capacitance
• Cable A: 75 pF/meter (nominal)
• Cables B and C: 47.6 pF/meter (nominal)
– Key Features
• Male 68-pin VHDCI to female 68-pin D-SUB connectors
• Fully shielded construction for EMI rejection
• 2-meter length (0.5 m, 1 m, 5 m, and 10 m options available)
• Cable diameter: 0.540 in (13.7 mm)
• Minimum bend radius: 6.5 in (165 mm)
• Black jacket
– Typical Applications
Multichannel analog data acquisition with digital control signaling. Electrochemical instrumentation. Industrial DAQ systems requiring noise immunity in harsh RF environments.
– Compatibility & Integration
Direct connection to NI M Series and X Series DAQ devices. Supports all 68-pin D-SUB and VHDCI accessories. Specified for WaveNeuro FSCV Series and legacy CBP Bipotentiostat systems.
