National Instruments 779058-04

Part Number: 779058-04
Model Name: PXI-5441
Type: PXI Waveform Generator

The National Instruments 779058-04, also known as the PXI-5441, is a high-performance 43 MHz arbitrary waveform generator designed for a myriad of advanced applications. This versatile instrument can produce standard waveforms such as sine, square, triangle, and ramp, as well as user-defined arbitrary waveforms, making it suitable for tasks ranging from electronic warfare to radar testing and validation. The generator excels with a close-in spurious free dynamic range (SFDR) of -91 dBc and a 100 MS/s sampling rate, ensuring the output of high-quality signals. It features a maximum output range of 12 Vpk-pk into a 50 Ω load, enhancing its utility for various general-purpose electrical testing scenarios.

The 779058-04 facilitates rapid waveform downloads at speeds up to 100 MB/s via PCI bus communication with the host computer, surpassing the performance of conventional GPIB-based instruments. Its advanced Synchronization and Memory Core (SMC) architecture allows seamless synchronization with digitizers and other waveform generator/analyzer devices, promoting the development of mixed-signal test systems. Users can synchronize multiple generators to create a phase-coherent multi-channel output, essential for generating I/Q signals in applications like beam-forming antenna systems and MIMO.

Onboard processing capabilities include digital pre-filter gain, an advanced numerically controlled oscillator (NCO), and FIR and CIC interpolation filters, which provide significant flexibility during signal generation. The device allows for independent I and Q pre-filter gain and offset controls, enabling the simulation of gain and offset imbalances. The FIR filter accommodates programmable coefficients such as flat, raised cosine, and custom shapes to tailor waveform data, while the CIC filter supports interpolation of waveform data from 6x to 256x, allowing for precise upsampling. With its NCO, the 779058-04 generates sine and cosine waveforms with a frequency resolution of 355 nHz and a phase resolution of 0.0055 degrees, facilitating meticulous control over quadrature skew and frequency inaccuracies during waveform creation.