[Yokoza Washimi]

We performed the shaker injection for the IFI chamber leg, +Y side, near the bellows leg. (See the photograph)

10:25 swept sine (from 80 Hz)
lock loss around 180 Hz
10:53  swept sine 150 - 980 Hz 
11:07  broadband (100-1000Hz) injection
11:09  broadband (100-400Hz) injection
11:10  broadband (100-200Hz) injection

127Hz peak is comparable to the current sensitivity.