The National Instruments PXI-5401 (Part Number: 777950-01) is a high-performance 16 MHz Arbitrary Function Generator designed to meet the needs of advanced applications. With a 12-bit amplitude resolution and a frequency resolution of 9.31 mHz, this module provides exceptional precision for generating standard and arbitrary waveforms. It features four triggering modes and offers software-selectable output impedance of 50 or 75 Ω, allowing for versatile integration into various systems. The maximum update rate of 40 MHz is achieved using a 32-bit direct digital synthesis (DDS) technology, ensuring accurate replication of repetitive waveforms, including 1 MHz triangle, square, and ramp signals.

The PXI-5401 supports waveform storage of up to 16,384 complex waveforms and 512 frequency steps, making it suitable for elaborate applications that require sequence generation. Its analog output, governed by an integrated 12-bit digital-to-analog converter (DAC), is optimized through an amplification/attenuation and low-pass filter to achieve maximum dynamic range. Additionally, the module includes a SYNC output, providing a TTL level sine wave with a maximum frequency of 16 MHz, through two SMB connectors for easy access to external trigger input and PLL reference signals.

This compact device has dimensions of 6.3 x 3.9 inches and operates with a power requirement of 3.5 A at 5 V and 125 mA at 12 V. To facilitate user interaction, it comes with a state-of-the-art Sources Soft Front Panel (SFP) that enables real-time control and configuration of arbitrary and standard waveforms. Integration with the NI-FGEN driver software allows for flexible programming through various development environments such as LabVIEW, LabWindows/CVI, C/C++, ComponentWorks, and Visual Basic. Although its production has been announced obsolete, the PXI-5401 remains available for purchase and repair through Apex Waves.