The NI SMA-2164 is a differential digital I/O accessory that interfaces with National Instruments data acquisition devices to establish secure, low-noise connections for differential digital input and output signals. SMA connectors deliver consistent coaxial performance with impedance matching and shielding benefits, while differential signaling architecture reduces common-mode noise susceptibility and extends signal integrity over longer cable runs compared to single-ended alternatives.
Technical Specifications
• Connector Type: SMA (SubMiniature version A) for coaxial digital signal I/O
• Signal Type: Differential digital input and output
• Signal Levels: Standard digital logic levels compatible with host NI DAQ devices (specific voltage thresholds and current drive capabilities depend on connected DAQ device)
• Noise Immunity: Enhanced by differential signaling, suitable for electrically noisy environments
• Form Factor: Compact accessory for integration within DAQ system setups
– Key Features
• SMA connectors ensure secure mechanical connections with minimal signal disruption
• Coaxial design provides impedance matching and shielding across a wide frequency range
• Differential topology inherently reduces susceptibility to common-mode interference and noise
• Signal integrity maintained for accurate data acquisition and control operations
• Industrial and laboratory-grade construction
– Typical Applications
• Industrial automation with digital sensors and actuators in noisy environments
• Test and measurement systems requiring differential signal conditioning
– Compatibility & Integration
The SMA-2164 integrates with National Instruments DAQ devices supporting differential digital I/O configurations. It functions as a signal conditioning and connection interface within larger DAQ system architectures, not as a standalone acquisition device. Host device documentation must be consulted to confirm compatibility with specific digital I/O configurations.
