Differences between revisions 2 and 9 (spanning 7 versions)
⇤ ← Revision 2 as of 2018-07-19 16:50:12 →
Size: 441
Editor: SatoshiTanioka
Comment:
← Revision 9 as of 2018-07-19 17:30:26 → ⇥
Size: 702
Editor: SatoshiTanioka
Comment:
Deletions are marked like this. Additions are marked like this.
Line 4: Line 4:
'''Activities on 2018/07/18''' Activities on 2018/07/18
Line 12: Line 12:

Measured TFs when we excite in Y direction.
{{attachment:20180718_TF_Yexc3000.png||width=1200}}
{{attachment:legend.png||width=900}}

Geophoneの伝達関数が高周波でフラットになっている。
本来は周波数の1次で落ちていくはず。

2018/07/19

Activities on 2018/07/18

  • Set a calibration factor of each LVDTs.
  • Measured TF in L, T and Y.
  • The results were saved at users/tanioka/TMS/TF/20180718.
  • The measurements were done by swept sine and the excitation amplitude was 3000.
  • I changed thresholds of WATCHDOG 800 for LVDT and 80000 for Geophone.

Activities on 2018/07/19

Measured TFs when we excite in Y direction. 20180718_TF_Yexc3000.png legend.png

Geophoneの伝達関数が高周波でフラットになっている。 本来は周波数の1次で落ちていくはず。

KAGRA/subgroup/AOS/TMS-VIS0/2018-07-19 (last edited 2018-07-20 13:35:17 by SatoshiTanioka)