For over 30 years, GHI Systems has supplied thousands of customers with shock and vibration measurement systems. The ProCAT Spectrum Analyzer brings uniformity to the HALT/HASS process resulting in shorter times to market and a higher return on investment. Measuring chamber performance against product response characteristics by analyzing spectrums is the best way to ensure the machine is doing the job expected. ProCAT provides Transfer Functions that show mathematical relationships between spectrums for power uniformity surveys to improve fixture losses and excitation balance on products or between tables. Overlays are used to visually compare spectrums to prove that stressing power covers product resonances, and to improve uniformity to stress products evenly. Damage Potential Spectrums predict fatigue for comparing machine performance and improving the potential to produce fatigue. Streaming to Disk creates history files to document performance and track machine maintenance.