The National Instruments NI PCI-5401 is a PCI Arbitrary Function Generator designed for test, measurement, and inspection applications in the business and industrial sectors. With National Instruments being a well-known brand in the industry, this model offers high-quality data acquisition capabilities for PCI cards. The NI PCI-5401 is ideal for generating a wide range of arbitrary waveforms for various testing and measurement needs, making it a versatile tool for data acquisition and logging tasks.