The Compass / P / R button will open the following window, which allows evaluation of the heading, pitch, and roll and adjustments to the magnetic variation and heading offset.
Plot Control
The time series for multiple transects can be overlayed on the compass and pitch / roll time series graphs by checking multiple transects. The transects are NOT identified by different line types or colors in the graphs as the colors are used to identify the type of data. NOTE: All data are plotted by ensemble number from left to right.
The compass time series displays the compass heading from either the internal compass or an external compass or both. For RiverSurveyor M9's the change in magnetic field can also be shown and will have its scale along the right axis. The user can check or uncheck the data types available to change which data types are displayed. Data are always displayed by ensemble from left to right.
The pitch / roll time series displays the pitch and roll from the internal sensors. Data are always displayed by ensemble from left to right. If data are from a RiverSurveyor M9 with a G3 compass the pitch and roll limits of the compass calibration will be displayed as dashed lines.
Clicking in the table on one of the values of magnetic variation will open a dialog to allow changing the magnetic variation. The change can be applied to all transects or only the selected transect.
NOTE: The magnetic variation is only applied to the internal heading.
If the heading source is set to external and the magnetic variation dialog opened a warning will be displayed.
Clicking in the table on one of the values of heading offset will open a dialog to allow changing the heading offset. The change can be applied to all transects or only the selected transect.
NOTE: The heading offset is only applied to the external heading.
If the heading source is set to internal and the heading offset dialog opened a warning will be displayed.
Clicking in the table on one of the rows below Heading Source will open a dialog to allow changing the heading source, if external heading data are available. The change can be applied to all transects or only the selected transect.
The Nav Ref panel that shows the current navigation or boat velocity reference. If this reference is not BT, then changes to the BT filters will not change the discharge.