Guralp Systems CMG-3TB - Manual (Page 60)

CMG-3TB
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.
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.
8. The script will ask you to fill in sensor calibration parameters
for each component you have selected.
60 Issue C