Calibrating the 3TB
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
C
n
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 the shift key (
) 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.
55
Issue G - November 2019
