The National Instruments PCI-4472 and

PXI-4472 are 8-channel dynamic signal

acquisition devices for making high-accuracy

audio-frequency measurements. The

PCI-4474 is a similar 4-channel board.

The vibration-optimized NI 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 high-channel-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.