Prerequisites
Attach the accelerometer to the analyzer and the equipment.
Overview
The Bump Test Equipment Running confirms resonance when you cannot turn the equipment off to perform a normal bump test. It also helps remove background vibration. Use a normal hammer for this measurement.
To perform the test in a frequency range, use a cursor to mark a frequency. This places the frequency of interest in the middle of the new spectrum. Bump Test Equipment Running uses Negative Averaging to remove the operational frequency, leaving the resonant frequencies for analysis.
If the running speed is at a resonant frequency, a valley in the middle of the resonant peak appears as the operational frequency is subtracted out.