![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
* 地震計 CMG-3ESPC (Güralp) [#k0e6c9b6] ** Pictures [#v4af505a] *** Seismometer [#pc885af2] #ref(seismometer.JPG,,15%); *** Break Box [#pc885af2] #ref(breakbox.JPG,,15%); **How to Use [#ede3edff] + Prepare a power supply. You need ''bipolar 12V''. + Connect the power supply and the break box by a power supply cable. The power supply cable is the one with 2 wires at the end (one is red, the other black). Connect the red-colored cable to +V, and the black one to -V. + Connect the seismometer and the break box by the thickiest cable + Connect the cable you haven't connected to the "RECORDER" terminal of the break box. This cable has ""3 output"": ''black'', ''white'', and ''yellow''. These correspond to ''NS'' , ''EW''(horizontal) and ''Z''(vertical). + Connect the cable you haven't connected to the "RECORDER" terminal of the break box. This cable has ""3 output"": ''green'', ''white'', and ''yellow''. These correspond to ''NS'' , ''EW''(horizontal) and ''Z''(vertical). + Turn on the power supply. + Push "ENABLE" button and "UNLOCK" button at the same time for 7 seconds. Then the "BUSY" LED will light. After a moment, the outputs will fluctuate around 0. If not, push "ENABLE" and "CENTRE" in the same way. Then the instrument start to calibrate its position to the center. ** Parameters [#v3c56c1c] *** Response function [#x0cfeb6f] #ref(Response.png,,70%); #ref(ResponseFunction_CMG.png,,17%); *** Output assignment [#g22c060a] | output | direction| | black | N-S| | white | E-W| |yellow | Z (vertical)| | green | N-S | | white | E-W | |yellow | Z (vertical) | *** zero & pole [#gab190ad] | pole (Hz) | zero (Hz)| | 5.89 x 10^{-3} + 5.89 x 10^{-3} i | 0 | | 5.89 x 10^{-3} - 5.89 x 10^{-3} i | 0 | | 80 | | | 160 | | | 180 | | *** Gain [#reeacf06] |axis|Gain| |NS|991| |WE|992| |N-S|991| |W-E|992| |Z|980| ** Noise Level [#bce4b3f6] will be written someday. ** Reference [#bee926e2] - [[Manual>https://www.guralp.com/documents/MAN-C3E-0001.pdf]] - [[Calibration sheet>https://granite.phys.s.u-tokyo.ac.jp/wiki/Lab/index.php?plugin=attach&pcmd=open&file=CalibrationSheet.pdf&refer=AndoLabInstrumentsSeismometer]]
