The NI SHC68-C68-A1 is a 1-meter shielded analog cable designed to connect National Instruments DAQ devices to signal conditioning modules and instrumentation. It combines a 68-pin male VHDCI connector with a 68-pin male SCSI connector, delivering 40 single-ended input/output channels with superior EMI shielding. The cable maintains signal integrity across analog measurement systems through controlled electrical characteristics and precise channel synchronization.
Technical Specifications
• Cable Type: Shielded analog cable
• Length: 1 meter
• Connectors: 68-pin male VHDCI to 68-pin male SCSI
• Conductor Gauge: 32 AWG, 7/0.08 mm stranding
• Maximum Voltage Rating: ±30 VDC
• Characteristic Impedance: 50 Ω ±10%
• DC Conductor Resistance: 0.5 Ω
• Capacitance: 100 μF
• Propagation Delay: 4.9 nanoseconds
• Channel-to-Channel Skew: 50 picoseconds
• Weight: 255 grams
– Key Features
• Impedance-matched design (50 Ω ±10%) minimizes signal reflections and optimizes power transfer for DAQ applications.
• Low conductor resistance (0.5 Ω) preserves signal amplitude with minimal loss across the 1-meter run.
• Tight channel-to-channel skew specification (50 picoseconds) ensures synchronized multi-channel measurements and accurate time-domain acquisition.
• Propagation delay of 4.9 nanoseconds maintains signal fidelity in high-frequency analog circuits.
• Comprehensive shielding protects against electromagnetic interference, critical in noise-sensitive measurement environments.
– Typical Applications
• Multi-channel data acquisition systems requiring synchronized analog input/output
• Signal conditioning and instrumentation interfacing
• Time-critical analog measurement and control systems
• Laboratory and industrial testing environments with EMI exposure
– Compatibility & Integration
Designed for National Instruments X Series (63xx) and M Series (62xx) DAQ devices. The VHDCI connector integrates directly with NI acquisition hardware, while the SCSI connector provides broad compatibility with NI signal conditioning modules and third-party instrumentation supporting standard SCSI analog interfaces.
