1) Fixed the keystone of BF.
2) Released the keystone of F3.
3) Tuned the F3. Optimal load was additionally 4.2kg at 0.31Hz with 69.5mm in height.
4) Checked the range of FR. It was 13.5mm.
5) Closed the cap. Frequency went to 0.34Hz with 64.0mm in height.
6) Hang the F3. Frequency went to 0.37Hz with 62.0mm in height.
7) Reduced the load by 0.4kg. Frequency went to 0.27Hz with 66.0mm in height.
8) Calibrated the LVDT. Shifted down the secondary coil by 3mm. See the changing from red line to blue line in the plot.
As other work:
- Made the Dsub terminators.
- Tagged the cables.
- Assembled the side stoppers.
- Attached the connector plates onto the cap.
