Stanford Research Systems

Stanford Research Systems

Stanford Research Systems (SRS) is an American scientific instrument manufacturer based in Sunnyvale, California, specializing in precision test and measurement equipment for research and industry. Founded in 1980, SRS is best known for its lock-in amplifiers, which are used to detect and measure very small signals in the presence of high noise. The company also manufactures signal generators, atomic frequency standards, DC power supplies, and specialized analyzers used in physics, chemistry, and engineering research worldwide.

SRS instruments are found in university research laboratories, national measurement institutes, and industrial R&D facilities. Their rubidium frequency standards and synthesized clock generators serve timing and synchronization applications where long-term stability and low phase noise are critical requirements.

Key Product Lines

• Lock-In Amplifiers: Analog and digital lock-in amplifiers for extracting signals buried in noise, including the SR530 and SR830 series
• Frequency Standards: Rubidium atomic frequency standards (FS725) for precision timing and frequency reference applications
• Signal Generators: Synthesized clock generators (CG635) and RF signal sources with low phase noise for laboratory and communications use
• Audio Analyzers: Two-channel audio analyzers (SR1) for distortion, frequency response, and noise measurements
• DC Power Supplies: High-voltage and precision DC power supplies for laboratory instrumentation and component testing

Industries Served

Stanford Research Systems instruments serve physics and chemistry research, telecommunications, aerospace, semiconductor testing, and precision metrology. Lock-in amplifiers are standard tools in optical, magnetic, and electrical measurements requiring signal recovery from noisy environments. Frequency standards are used in GPS systems, communications infrastructure, and national timing laboratories.