====== Bounce Mode

Here is a summary of the BS bounce mode survey with BRD5_v5 and BRD6_v6 attached to the suspension for 6 months.
Details of the measurements are attached in the spreadsheet.

The measured transfer functions over time are shown in figure 1. We observed a single peak in the data. This is unexpected from our model.

• There is no trend in the value of the resonant frequency.  The mean frequency is 16.660 Hz. The maximum excursion is +0.4% and the minimum is -0.2%.  
• The Q of the mode is varying from 60 to 260, with no obvious correlation with the frequency variations. The maximum Q = 260 corresponds to a measurement with a lower amplitude of excitation (see elog xxx).

Therefore it seems that the bounce damping is pertty stable over 6 months. We didn't analyze correlations of the variations with environmental factors in the lab.

Measurements after taking off the BRD from BS:

Recall that pre-installation measurements were: