Robust Vibration Test (Categories R, U, U2) The robust vibration test demonstrates that equipment will operate satisfactorily while being subjected to vibration and that it will continue to operate satisfactorily after being subjected to endurance vibration levels. It combines a demonstration of the equipment functional performance and structural integrity. This test should be performed on all equipment where resistance to effects of long duration exposure to vibration must be demonstrated. The necessity for conducting this test in lieu of…