The NI PCI-4552 is a 4-channel dynamic signal acquisition board designed for precise audio, noise, and vibration measurements. It integrates 24-bit analog-to-digital converters with IEPE signal conditioning and simultaneous sampling across all channels, making it suitable for machine condition monitoring, acoustic analysis, and NVH testing applications.
Technical Specifications
Analog Input
• 4 channels, 24-bit resolution
• Differential inputs with DC and AC coupling
• Maximum input range: ±10 V
• IEPE signal conditioning with 2.5 mA constant current excitation
• IEPE power output: selectable 0 V or 4.5 V
• Software-selectable anti-aliasing filter
• Sample rate: up to 50 kS/s per channel (simultaneous sampling)
Analog Output
• 0 channels (acquisition-only board)
Timing and Synchronization
• Internal clock with external clock input capability
Interfaces
• PCI bus connection
Power
• Supplied by PCI bus
– Key Features
• 24-bit ADCs deliver high-resolution signal capture for demanding measurement tasks
• IEPE support enables direct connection to accelerometers, microphones, and other IEPE-compliant sensors
• Simultaneous sampling across all 4 channels maintains phase coherence
• Software-configurable anti-aliasing filtering optimizes measurement accuracy
• Differential inputs with selectable coupling reduce common-mode noise
– Typical Applications
• Machine condition monitoring and predictive maintenance
• Acoustic and environmental noise measurement
• Noise, vibration, and harshness (NVH) testing
• Structural health monitoring
• Audio signal acquisition
– Compatibility & Integration
The board integrates with NI-DAQmx driver software and supports development in LabVIEW, LabWindows/CVI, ANSI C/C++, .NET, and MATLAB environments. Standard PCI form factor fits conventional desktop and industrial computer systems.
