Displays a time trace for each beam separately when the water column is active. Right clicking
allows the user to zoom in, while left clicking resets the zoom. Channels can be selected using
the arrows at the bottom. A graphical selection appears on the wedge.
Hide/unhides the sonar settings menu. The user still has control of the gates, and therefore
the sonar range, by clicking/dragging the gates interactively on the wedge.
Selecting activates raw data recording with the native NORBIT format (*.wbm), and
simultaneously generates files with the s7k format (*.s7k). Recorded data can be played back at any
time (even during real time sonar operation and recording), as described in section 4.6.5.2. The GUI
recording files are saved by default in: C:\Users\user\NORBIT\WBMS\. Each recording session
generates a folder with the naming convention YYYY-MM-DD-HH_MM_SS. If NORBIT requests
data for a support case, please compress the files beforehand as they may become very large,
especially when water column is included.
Optimizing Backscatter Display
Tuning the display Brightness and Gamma Correction (in Options) does not have any impact on
the raw data signal and is only used to adjust the display. However, TVG settings impact data output.
See section 4.6.2 for details.
To optimize backscatter images visually:
1. Adjust Brightness on the display control bar
2. Under Backscatter Controls, ensure that Apply TVG is selected
3. Adjust the settings for Static Gain, Spreading and Absorption until the side scan image
appears unsaturated, and ensure that the SS/SN/WC indicators are green.
These settings are dependent on current environmental conditions (water sediment content, salinity,
temperature, etc.) and may have to be adjusted as the survey progresses. Ensure that the SS and
SN indicators remain green (unsaturated) as saturated soundings will not be salvageable.
4.9
Data Formats, Recording & Output
Raw Data Recording
Users may record bathymetry data with full motion and navigation data (for Applanix integrated
systems only) in the native NORBIT format with extension *.wbm. Since NORBIT GUI 10.4 was
released, s7k files are generated automatically at the same time as wbm files and include True
Heave data. The s7k format has a publicly available data format definition (DFD). If requested,
NORBIT Support can provide documentation on the DFD. The logging location for *.wbm, *.s7k and
*.000 files can be changed by selecting Advanced > Options > Paths. See section Advanced for
more details.
The data types stored within raw data files depends on the selections made within Backscatter
Controls. The View WC Checkbox controls whether compressed water column data is recorded,
and the Backscatter Mode (but not the View Backscatter selection), controls what backscatter
imagery is recorded. Note, this is only relevant for raw data files recorded in the GUI and does not
affect data output to acquisition software (see
Data Output via Network Subscription.)
All acquisition software subscriptions overwrite selections made in the GUI. Meaning that, if the GUI
does not have Side scan selected for Backscatter Mode, but side scan is requested by the
acquisition software, side scan will be recorded in the wbm files regardless.
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