Overview
The National Instruments PCI-4472 and PXI-4472 are 8-channel dynamic signal acquisition devices for making high-accuracy audio-frequency measurements. The NI PCI-4474 is a similar 4-channel board. The vibration-optimized PXI-4472B offers a lower AC cutoff frequency of 0.5 Hz. Input channels incorporate Integrated Electronic Piezoelectric (IEPE) signal conditioning for accelerometers and microphones. The input channels of an NI 447x simultaneously digitize input signals over a bandwidth from DC to 45 kHz. You can synchronize multiple NI 447x devices for highchannel-count applications, or with other modules using the PXI star trigger bus or the RTSI bus on PCI. When used with the Sound and Vibration Toolkit or other software analysis tools, an NI 447x can obtain a variety of accurate time and frequency measurements for your application.

NI 4472 Series, NI PCI-4474
• 24-bit resolution
• 110 dB dynamic range
• 102.4 kS/s maximum
   sampling rate
• 45 kHz alias-free bandwidth
• ±10 V range
• AC/DC coupling
• IEPE conditioning –
   software configurable
• Multiple-device synchronization