NI9215 National Instruments Simulation output module

Description

NI9215 National Instruments Simulation output module

Product Dimensions：

Product Description

The NI-9215 is a 4-channel analog input module designed for high-speed voltage measurements. Unlike many standard modules that use a multiplexer (which samples channels one after another), the NI-9215 features an independent Analog-to-Digital Converter (ADC) for each channel. This allows for simultaneous sampling, ensuring that phase relationships between signals are perfectly preserved—a critical requirement for power analysis and structural vibration testing.

Product  Parameters

Product Advantages

• Simultaneous Sampling: Eliminates phase delays between channels, which is essential for measuring phase differences in electrical or mechanical systems.

• High Speed: At 100 kS/s per channel, it can capture fast transients and high-frequency waveforms that slower modules would miss.

• Versatile Connectivity: Available in BNC versions for easy connection to standard probes, or Screw Terminal versions for permanent industrial wiring.

• Hot-Swappable: Can be removed or inserted into a CompactDAQ or CompactRIO chassis without powering down the system.

• NIST Traceability: Comes with a calibration certificate, ensuring high measurement accuracy for laboratory and regulated industrial environments.

Safety and Maintenance

• Voltage Limits: Do not exceed the $\pm 30$ V overvoltage protection limit relative to the common (COM) terminal to avoid permanent damage.

• Proper Grounding: Ensure the chassis is properly grounded. While the module has channel-to-earth isolation, it is not channel-to-channel isolated (all 4 channels share a common ground).

• Cable Shielding: To maintain 16-bit precision and minimize noise, use shielded twisted-pair cables, especially in high-EMI (Electromagnetic Interference) environments.

• Calibration: NI recommends an annual calibration interval to ensure the module remains within its specified accuracy tolerances.

Typical Applications

• Power Quality Analysis: Measuring voltage waveforms across multiple phases simultaneously to calculate power factor and harmonic distortion.

• Structural Health Monitoring: Synchronized vibration sensing using accelerometers to analyze the movement of bridges or aircraft wings.

• Acoustics and Audio: Capturing sound from multi-microphone arrays where phase alignment is necessary for beamforming or noise cancellation.

• Control System Prototyping: Providing fast feedback loops for R&D in automotive or aerospace engine control.

• Ballistics and Impact Testing: Capturing high-speed events during material stress tests.

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