The ISO Category II Vibration Analyst “Intermediate” course is intended for personnel who have at least twelve months vibration analysis experience and a basic understanding of vibration theory and terminology. The course provides an in-depth study of machinery faults and their associated spectrum, time waveform and phase characteristics. Category II certification requires that you have demonstrated 18 months experience in vibration analysis, completed the Category II course and successfully pass the Category II vibration analyst examination, however Category I is not a prerequisite to become certified as a Category II vibration analysts.