This is a sources sought notice for market research to identify potential suppliers of a lock-in amplifier and an arbitrary waveform generator for a laser Doppler vibrometer setup. The required lock-in amplifier must analyze signals up to 600 MHz with at least two channels, while the arbitrary waveform generator requires at least 2.4 GSa/s and four channels. The notice requests detailed capability statements from companies, including technical specifications, pricing, and manufacturing origin. No specific budget or performance location is mentioned in the provided description.