Simrad ARGUS FMCW 3G, User Manual

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Measurement | Argus Radar Operator Manual
Cursor section
In the cursor section of the system data area, all the parameters relevant to the cursor are
displayed. The information displayed are described in the following sub-paragraph.
Cursor
The cursor polar position (range and bearing) is displayed and it can be toggled between True
and Relative. If heading data is missing, the True information is not available.
Latitude and Longitude or ETA and TTG
These fields normally indicate the Geographic position of the cursor. The position is not dis-
played if the cursor is not inside the PPI and if no EPFS is connected.
According to preference, it is possible to display ETA and TTG to the cursor position. The
switch between the two presentations can be easily performed moving the trackball onto the
“Latitude” and “Longitude” labels observing the Help line. The Help line related to the left SK
will indicate “ETA / TTG” (if the presentation is already set to ETA and TTG it will indicate “Lat /
Lon”). In ETA and TTG mode, the system will indicate the estimated date and time of the even-
tual arrival at the point where the cursor is placed (ETA, expressed in hh-mm dd-mm-yyyy)
and the time needed to arrive at that point (TTG, expressed in dd hh-mm).
To display ETA and TTG, the cursor must be placed inside the PPI at a bearing of ±45° relative
to own ship course.
¼
Notes:
•
ETA can be displayed only if an external time source is connected (i.e. GPS) or a manual date
and time is set
• Both ETA and TTG are not displayed if the speed source is in failure or if the speed is lower
than 0.1 KT.
ERBL 1 and 2
The operator has the possibility to use up to two sets of ERBL (Electronic Range and Bearing
Line) and select between “Relative and True” and “Centre and Off Centre” for each set. The
three shortcuts in the next picture allows to visualise the ERBL on the PPI or not; passing with
the mouse pointer over them, the Help line will show the possible choices; On/Off and True/
Relative ERBL. When an ERBL is active, the respective shortcut will show the range of the VRM
in NM and the bearing of the EBL in degrees.
By default, the ERBL center always follow the ship’s position in every presentation mode, so
when the ship changes course the center will move accordingly.
It is also possible to lock each ERBL center to the current geographic position.
The choice is available by pressing the two trackball pushbuttons when the cursor is over the
left or right part. Two options available are: “Geolock” and “OS.Lock”.
The anchor symbol on the left means that the ERBL is locked to a geographic position and the
same symbol is shown near the display ERBL center, see the following figure.