Simrad SH90 - REV A, Operator'S Manual

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Getting started
Figure 8 Variable Range Marker (D), Compass Card (E) and
Vertical Ring (F)
The
Variable Range Marker (VRM)
(D) consists of an adjustable
range ring with range read-out. It can be used for any type of
distance marking relative to the vessel. To adjust the marker,
locate the cursor on the marker ring, press the
Select
on the
Operating Panel, and move the cursor with the
Select
button
depressed. When the button is released, the variable range
marker radius will be locked to the new position.
The
Compass Card
(E) is shown as short yellow lines for
every 10th degree along the outermost circle of the sonar view.
A triangle symbol indicates each 90th degree. It has labels
indicating North, East, South and West. It is updated when the
heading of own ship has changed more than 1 degree.
The
Vertical Ring
(F) shows the selected range of the vertical
slice as a full circle in the horizontal presentation. This is an
indication of which distance a target should be presented in the
vertical view. The Vertical Ring will only be visible in those
modes that support a vertical slice.
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