Geophone の変更点

• 追加された行はこの色です。
• 削除された行はこの色です。
• Geophone へ行く。
• Geophone の差分を削除

* 地震計 L-4C & L-22E (Sercel) [#p1cd08be]


** Pictures [#c89c72e5]
#ref(Mag649.jpg,,20%);


**How to Use [#ub3c2e4a]
*** L-4C [#ib80ad23]
Just connect the cable to its output.~
Response function from displacement to voltage:
#ref(response.png,,10%);
#ref(response_plot.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 [#s142f706]
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.

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 | 49.3 | 2.04 | 0.67 |


** Noise Level [#u558059f]
will be written someday.