Simrad ARGUS FMCW 3G, User Manual

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Measurement | Argus Radar Operator Manual
lowing the Help line (centre SK says “Select”), the operator will be able to hook the line by
pressing the centre SK and keeping it pressed. Then, moving the mouse, the line will turn and
it will be released when releasing the centre SK. To move the line at the right range, perform
the above operation hooking the point drawn on the index line.
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Note: When the parallel index is selected and moved manually, the respective label changes
to “Floating” and the list status to “PI Lines Independent”.
When the North stabilised checkbox is enabled, the parallel indexes are always maintaining
their direction in respect to north.
It is suggested to select the Parallel Lines True when the reference is geographic, such as a
coast line, and the Parallel Lines Relative when the reference is a moving reference, such as
another ship.
On the display’s lower bar, the PI pushbutton is shown on the left in both possible states,
which permits a fast access to the Parallel Index menu. The button reflects also the status of
the Parallel Index function. When not enabled, a red cross is overlayed the PI icon.
When the “Truncate mode” checkbox is selected, the parallel indexes can also be truncated.
The effect is to have not-a-straight-line but a semi-straight-line, on one or both sides.
To truncate a parallel index the operator has to focus the line. The Help line will suggest “Trun-
cate” / “Select” / “Untruncate”.
Use the left SK to truncate the line, while the right SK is used to redraw the straight line.
Range rings
The function of the range rings button is to switch On/Off (show/hide) the range rings, and
display their status and the distances between the rings.
The range scales available are: 0.25, 0.5, 0.75, 1.5, 3, 6, 12, 24, 48, and 96 NM.
If the range rings are On, the distance between two adjacent rings is automatically shown at
the range scale selection. The related values are: 0.05, 0.1, 0.25, 0.25, 0.5, 1, 2, 4, 8, and 16.
The long range scales provide the best overview of own ship in relation to land masses,
weather fronts and large ship targets in or beyond view.
The short range scales provide greater detail of the radar echoes close to own ship, and
should be used as the ship approaches the coastline, harbour or other vessels in the area.