Guralp-systems CMG-3ESPCD Manual de usuario descargar pdf (Pagina 34)

CMG-3ESPCD Digital Broadband Seismometer Calibrating the 3ESPCD

together with a suitable duration and amplitude, and click Inject now.

A new data stream, ending Cn (n = 0 – 7) or MB, will appear in

Scream!'s main window containing the returned calibration signal.

3. Open a Waveview window on the calibration signal and the returned

streams by selecting them and double-clicking. The streams should

display the calibration signal combined with the sensors' own

measurements. If you cannot see the calibration signal, zoom into the

Waveview using the scaling icons ( ) at the top left of the

window or the cursor keys.

If necessary, drag the calibration stream Cn up the Waveview window,

so that it is at the top.

4. If the returning signal is saturated, retry using a calibration signal with

lower amplitude, until the entire curve is visible in the Waveview

window.

5. If you need to scale one, but not another, of the traces, right-click on

the trace and select Scale.... You can then type in a suitable scale factor

for that trace.

6. Pause the Waveview window by clicking on the icon.

7. Hold down SHIFT and drag across the window to select the calibration

signal and the returning component(s). Release the mouse button,

keeping SHIFT held down. A menu will pop up. Choose “Broadband

Noise Calibration”.

MAN-C3E-0002 34 Issue B - November 2013

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Guralp-systems CMG-3ESPCD Manual de usuario Pagina 34