National Instruments PXI-4472B

The National Instruments PXI-4472B is a high-accuracy dynamic signal acquisition module for PXI systems. It provides eight simultaneously sampled analog input channels with 24-bit resolution and 102.4 kS/s sampling rate per channel, delivering 110 dB dynamic range across a 45 kHz alias-free bandwidth. Built-in IEPE signal conditioning supports accelerometers and microphones. Integrated antialiasing filters automatically adjust to your sample rate, while analog and digital triggering modes—including window, edge, and edge-with-hysteresis triggers—enable precise capture control. The module accepts ±10 V input with software-configurable AC/DC coupling and 0.5 Hz AC cutoff for low-frequency vibration measurements.

– Technical Specifications

• Analog Input Channels: 8 simultaneously sampled
• Resolution: 24-bit
• Maximum Sampling Rate: 102.4 kS/s per channel
• Alias-Free Bandwidth: 45 kHz
• Dynamic Range: 110 dB
• Input Voltage Range: ±10 V
• AC Cutoff Frequency: 0.5 Hz (AC-coupled); 3.4 Hz (alternative)
• Constant Current Source: 4 mA ±5% precision, 24 V compliance
• Power Consumption: +3.3 VDC at 400 mA max; +5 VDC at 2000 mA max; ±12 VDC at 120 mA max each
• Data Transfer: DMA 20–30 MB/s; burst to 132 MB/s with PCI mini-MITE; 1,024-sample FIFO
• Operating Temperature: 0 to 55 °C
• Dimensions: 6.3 × 3.9 inches; 8.5 oz

– Key Features

• Integrated IEPE signal conditioning for piezoelectric transducers
• Automatic antialiasing filter adjustment
• Analog triggering: window, edge, and edge-with-hysteresis modes
• External digital triggering with pretrigger and posttrigger capability
• PXI star trigger bus synchronization with sub-nanosecond skew
• RTSI bus support for multi-device coordination
• Synchronizable with additional PXI-4472B modules for expanded channel counts

– Typical Applications

• Audio and electroacoustic testing
• Vibration diagnostics and machine condition monitoring
• Noise measurement and analysis
• Precision low-frequency AC signal acquisition

– Compatibility & Integration

• PXI Specification Revision 2.0 compliant
• NI-DAQmx driver support
• LabVIEW, LabWindows/CVI, and Measurement Studio compatible
• Transducer compatibility: microphones, accelerometers, and high-dynamic-range sensors