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* 地震計 L-4C & L-22E (Sercel) [#ac3a720d] ** Pictures [#bfbb78e6] *** L-4C [#ia07064c] - horizontal #ref(L-4C_horizontal.JPG,,8%); - vertical #ref(L-4C_vertical.JPG,,8%); *** L-22E [#p877424c] - vertical #ref(L-22E.JPG,,8%); **How to Use [#m7c5d307] *** L-4C [#c48594a5] Just connect the cable to its output.~ Response function from displacement to voltage: #ref(response_eqn.png,,10%); #ref(Geophone_Response.png,,20%); Parameters: | Label. | G | f0 | Q | | H1 | 249 | 1.071 | 1.81 | | H2 | 243.8 | 0.9491 | 1.705 | | H3 | 246 | 1.013 | 1.81 | | V1 | 255 | 1.013 | 1.739 | | V2 |243.1 | 0.9819| 1.746 | | V3 | 263.2 | 1.061 | 1.760 | *** L-22E [#ga251dff] L-22E has two outputs and the actual signal is their differential, so you need to subtract one output to the other. Except for this, everything is almost the same as L-4C.~ Parameters: | Label. | G | f0 | Q | | GEO2 (Vert.) | 49.3 | 2.04 | 0.67 | | 404089806 (Horiz.) | 42.78| 2.07 | 0.732 | | 404089807 (Horiz.) | 45.02 | 1.92| 0.766 | | Label. | G | f0 | Q | Comment | | GEO2 (Vert.) | 49.3 | 2.04 | 0.67 | | | 404089806 (Horiz.) | 42.78| 2.07 | 0.732 |https://granite.phys.s.u-tokyo.ac.jp/elog/?p=3998 | | 404089807 (Horiz.) | 45.02 | 1.92| 0.766 | https://granite.phys.s.u-tokyo.ac.jp/elog/?p=3998| ** Noise Level [#p91c5139] will be written someday.
