The NI SH68-68-D1 is a 1-meter shielded digital cable that connects National Instruments DAQ devices and modules equipped with 68-pin D-SUB connectors. Female-to-female connector configuration with twisted pair wiring ensures signal integrity across counter/timer and digital I/O applications while rejecting electromagnetic interference in demanding laboratory and industrial environments.
Technical Specifications
• Cable Length: 1 meter
• Connectors: 68-pin D-SUB Female to 68-pin D-SUB Female
• Cable Construction: Twisted pair wiring with overall shield
• Conductor Size: 28 AWG (digital twisted pairs)
• Single-Ended Impedance: 125 Ω
• Differential Impedance (Digital Twisted Pairs): 100 ± 15 Ohms @ TDR
• Mutual Capacitance (Digital Twisted Pairs): 17.5 pF/ft (max)
• Time Delay (Digital Twisted Pairs): 1.60 ns/ft (max)
• Conductor DC Resistance (Digital Twisted Pairs): 0.070 Ohms/ft (max @ 20 °C)
• Color: Black
– Key Features
• Shielded construction minimizes crosstalk and external noise coupling
• Twisted pair topology maintains controlled impedance characteristics
• 28 AWG conductors rated for high-speed digital signal transmission
• Compact 1-meter length suitable for benchtop and rack-mounted configurations
– Typical Applications
• Counter/timer measurements and synchronization
• Digital I/O channel expansion and multiplexing
• Analog output signal routing and control
• Real-time DAQ system integration
– Compatibility & Integration
The SH68-68-D1 interfaces with NI 6533/4 digital I/O devices, NI 670x analog output modules, and NI 660x/661x counter/timer modules. It also supports legacy NI DAQ hardware including USB-62xx (formerly M Series), NI 61xx (formerly S Series), NI 60xx/60xxE (formerly B Series and E Series), and devices featuring the NI 6810 68-pin connector.
