Guralp-systems CMG-40T Manual do Utilizador descarregar pdf (Página 27)

Operator's guide

2. Select the calibration channel corresponding to the instrument, and

choose Broadband Noise. Select the component you wish to calibrate,

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

new data stream, ending Cn (n = 0 – 7) or MB, should 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.

Drag the calibration stream Cn across 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.

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Guralp-systems CMG-40T Manual do Utilizador Página 27