The National Instruments part number 778511-01 identifies the PCI-6731, a versatile Analog Output Device designed for demanding waveform output and control applications. This module features four analog output channels with a resolution of 16 bits and can achieve a sampling rate of up to 1 MS/s, enabling simultaneous multichannel updates necessary for applications such as three-phase power modeling and acoustic distortion stimulus-response testing. In addition to its analog capabilities, the PCI-6731 includes 8 TTL/CMOS digital I/O lines and supports both external clocking and digital triggering, enhancing its functionality in various environments. Users can generate complex waveforms, including standard shapes like square, sine, and sawtooth, by controlling each data point per channel. The device operates seamlessly within any PCI bus-compatible computer, allowing straightforward integration, while its PXI counterpart requires a compatible PXI chassis. The PCI-6731 serves as a cost-effective alternative to multiple traditional instruments, such as function generators and PID controllers, and it effectively supports digital waveform creation and acquisition. Upon powering up, all PFI and DIO lines are configured as high-impedance inputs with a weak pull-up resistor for optimal flexibility. The device is powered by NI-DAQmx driver software, which is compatible with various software applications, including Measurement Studio, LabVIEW, and LabWindows. Configuration and setup can be easily performed using the Measurement & Automation Explorer (MAX) tool.