#+TITLE:Measurement of the sample vibrations when rotating the Spindle

Measurement:
- one geophone on the marble
- one geophone at the sample position

Every stage is powered on.

| Data file    | Description                |
|--------------+----------------------------|
| data_001.mat | nothing is turning         |
| data_002.mat | spindle is turning at 1rpm |

* Mesures Dynamiques Rotation Slip-Ring
All the stages are OFF

One geophone on the marble (Col 1)
One geophone at the sample location (Col 2)

Voltage amplifier setup:
60dB
AC
1kHz

LPF added at the input of the voltage amplifiers

Goal:
- Identifify the vibration induced by the rotation of the Slip-Ring and Spindle

- meas24: All OFF
- meas25: 6RPM: only the slip-ring is ON and rotating (spindle OFF)
- meas26: 6RPMZ; Slip-ring and Spindle ON