Product Introduction
The NI PXIe-4499 is a premium dynamic signal acquisition (DSA) module designed for precision sound and vibration analysis, structural dynamics, modal testing, machine condition monitoring, and acoustic measurements. As a member of the National Instruments Dynamic Signal Acquisition family, the PXIe-4499 combines high-resolution simultaneous sampling, integrated IEPE signal conditioning, and precision synchronization within the PXI Express platform.
Featuring 16 simultaneously sampled 24-bit analog input channels, programmable IEPE excitation, hardware anti-aliasing filters, and exceptional dynamic range, the PXIe-4499 is ideal for applications requiring highly accurate phase-aligned measurements across multiple sensors.
Product Overview
The PXIe-4499 is engineered for engineers performing precision dynamic measurements where low noise, high resolution, and synchronized acquisition are essential. Each analog input channel includes an independent 24-bit analog-to-digital converter and anti-aliasing filter, eliminating channel skew while preserving signal integrity.
Integrated IEPE signal conditioning allows direct connection of microphones, accelerometers, impact hammers, and force sensors without external conditioners. Combined with PXI Express synchronization and NI software, the PXIe-4499 provides an expandable platform for laboratory research, NVH testing, aerospace validation, and industrial diagnostics.
Key Features
16 Simultaneous 24-Bit Analog Input Channels
Every analog input channel is sampled simultaneously using an independent 24-bit ADC.
- 16 simultaneous analog input channels
- 24-bit resolution
- Dedicated ADC per channel
- Excellent phase matching
- High channel density
Advantage: Simultaneous sampling preserves timing relationships between sensors, making the PXIe-4499 ideal for vibration, modal, and acoustic testing.
Integrated IEPE Signal Conditioning
The module supports direct connection to industry-standard IEPE sensors.
- Integrated IEPE excitation
- Supports ICP® accelerometers
- Supports IEPE microphones
- Supports force sensors
- No external conditioner required
Advantage: Simplifies wiring while reducing installation cost and improving measurement reliability.
Built-In Anti-Aliasing Filters
Each analog input channel incorporates an independent anti-aliasing filter.
- Hardware anti-aliasing filters
- Independent filtering on every channel
- Improved FFT accuracy
- Excellent frequency response
- Reduced aliasing distortion
Advantage: Ensures highly accurate frequency-domain analysis across the entire measurement bandwidth.
Wide Dynamic Range and Low Noise Performance
Designed for precision dynamic signal acquisition over a broad measurement range.
- Low noise floor
- Excellent signal-to-noise ratio
- High dynamic range
- Low harmonic distortion
- Precision waveform acquisition
Advantage: Captures both very small and high-level vibration or acoustic signals without sacrificing measurement quality.
Advanced PXI Express Synchronization
Built for scalable synchronized measurement systems.
- PXI Express timing resources
- PXI trigger bus
- Reference clock synchronization
- Multi-module expansion
- Deterministic acquisition
Advantage: Multiple PXIe-4499 modules can be synchronized for large-channel structural and acoustic testing systems.
Technical Specifications
| Parameter | Description |
|---|---|
| Product Type | PXI Express Dynamic Signal Acquisition Module |
| Analog Input Channels | 16 Simultaneous Channels |
| ADC Resolution | 24-bit |
| Sampling Method | Simultaneous Sampling |
| Input Configuration | Differential |
| Sensor Support | IEPE / ICP® Sensors |
| Signal Conditioning | Integrated IEPE Excitation |
| Anti-Aliasing Filters | Built-In Per Channel |
| Dynamic Range | High Dynamic Range |
| Synchronization | PXI Express Timing and Triggering |
| Bus Interface | PXI Express |
| Driver | NI-DAQmx |
| Programming | LabVIEW, C/C++, .NET, Python |
| Operating Temperature | 0 °C to 55 °C |
Software Ecosystem
The PXIe-4499 integrates seamlessly with the NI software ecosystem for dynamic signal acquisition, automation, and advanced analysis.
- NI-DAQmx – Device configuration and synchronized acquisition.
- LabVIEW – Signal acquisition, FFT analysis, vibration measurement, and automation.
- NI MAX – Hardware configuration, diagnostics, and calibration.
- DIAdem – Advanced post-processing, reporting, and waveform analysis.
- FlexLogger – Configuration-based sensor logging.
- TestStand – Automated validation and production testing.
Industries
- Noise, Vibration and Harshness (NVH)
- Automotive Engineering
- Aerospace and Defense
- Industrial Condition Monitoring
- Mechanical Engineering
- Structural Dynamics Research
- Machine Diagnostics
- University Research Laboratories
Applications
Noise and Vibration Testing
Acquire synchronized measurements from microphones and accelerometers for NVH analysis.
- Automotive NVH testing
- Acoustic analysis
- Machine vibration monitoring
- Structural vibration measurement
Modal and Structural Analysis
Measure structural responses using multiple synchronized sensors.
- Experimental modal analysis
- Frequency response testing
- Structural dynamics
- Mechanical validation
Condition Monitoring
Monitor rotating machinery and critical industrial equipment.
- Bearing diagnostics
- Motor monitoring
- Gearbox analysis
- Predictive maintenance
Research and Laboratory Measurement
Provide high-accuracy synchronized acquisition for scientific research.
- Sensor evaluation
- Signal processing research
- Prototype validation
- Laboratory instrumentation
Comparison with Similar Products
| Model | Main Difference | Best Application |
|---|---|---|
| NI PXIe-4499 | Premium 16-channel dynamic signal acquisition with 24-bit simultaneous sampling and integrated IEPE conditioning. | High-end sound and vibration analysis |
| NI PXIe-4497 | Dynamic signal acquisition module offering similar architecture for general vibration and acoustic testing. | General-purpose DSA applications |
| NI PXIe-4492 | Lower channel count for compact dynamic measurement systems. | Medium-scale vibration testing |
| NI PXIe-4309 | Designed for bridge and strain measurements rather than IEPE dynamic acquisition. | Strain and bridge sensor testing |
Recommended Related Products
| NI PXIe-1095 | 18-slot PXI Express chassis for large-scale dynamic measurement systems. |
| NI PXIe-1092 | Compact PXI Express chassis for laboratory and portable systems. |
| NI PXIe-8842 | Embedded PXI Express controller for automated measurement applications. |
| NI PXIe-4497 | Dynamic signal acquisition module for expanding vibration and acoustic systems. |
| NI PXIe-6368 | Multifunction DAQ module for synchronized analog and digital acquisition. |
Why Choose PXIe-4499?
- 16 simultaneous 24-bit analog input channels
- Integrated IEPE signal conditioning
- Independent anti-aliasing filters
- Excellent dynamic range and low noise performance
- Outstanding channel-to-channel phase accuracy
- Scalable PXI Express synchronization
- Compatible with NI-DAQmx, LabVIEW, DIAdem, and TestStand
- Ideal for sound, vibration, structural, and condition monitoring applications
Frequently Asked Questions
What applications is the PXIe-4499 designed for?
The PXIe-4499 is designed for sound and vibration measurement, NVH testing, modal analysis, structural dynamics, machine condition monitoring, and high-precision laboratory research.
Can the PXIe-4499 connect directly to IEPE sensors?
Yes. The module includes integrated IEPE excitation, allowing direct connection of IEPE accelerometers, microphones, force sensors, and impact hammers without external conditioning hardware.
How does the PXIe-4499 differ from a standard multifunction DAQ module?
Unlike general-purpose DAQ devices, the PXIe-4499 is optimized for dynamic signal acquisition with 24-bit simultaneous sampling, integrated IEPE conditioning, independent anti-aliasing filters, and exceptional phase accuracy for acoustic and vibration analysis.
Conclusion
The NI PXIe-4499 Dynamic Signal Acquisition Module delivers premium performance for synchronized sound and vibration measurements. Featuring 16 simultaneous 24-bit analog inputs, integrated IEPE signal conditioning, hardware anti-aliasing filters, outstanding dynamic range, and PXI Express synchronization, it is an excellent solution for automotive NVH, aerospace validation, structural dynamics, industrial condition monitoring, and advanced research laboratories.
