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'''dummy''' '''2018/07/19'''
 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5561| klog]]

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'''''

{{attachment:20180718_TF_Yexc3000.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

20180718_TF_Yexc3000.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)