7.5.1 Calibration of IDC – the functionVia the Calibration menu, (F) Figure 1.Set altitude levels in the following ways:Contents7.5.1.1 Raised level7.5.1.2 Raised level measurement value7.5.1.3 Ground level7.5.1.4 Activation time7.5.1.5 SummaryParent topic: 7.5 Interactive Depth Control, IDCNext topic: 7.5.2 Setting the feed output.