Guralp Systems CMG-6TD User Manual
Page 76
Calibrating the 6TD
3. Open a Waveview window on the calibration signal and the returned
streams by holding
while selecting each of them and then
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
and
.
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
and drag across the window to select the calibration
signal and the returning component(s). Release the mouse button,
keeping
held down. A menu will pop up. Choose Broadband
Noise Calibration.
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Issue F - February 2014