The Keysight U5404A is a high-speed, low-noise, 4-channel data acquisition (DAQ) system. It is designed to provide precise, reliable measurements at maximum speeds of up to 8 GHz, while reducing the cost and complexity of traditional systems. The U5404A offers features such as integrated preamplifier, and digital I/O and VGA support, making it ideal for metrology, communications and defense applications. Additionally, the U5404A can be synchronized with multiple instruments, allowing for simultaneous measurement and analysis of signals from different sources.