How To Control Arcs Chart Features - Furuno FEA-2807 Operator's Manual

9. Raster Chart Material
9.14.5

How to control ARCS chart features

The Display dialog box contains several pages to control visible chart features.
Chart Display
Note: ARCS charts are "photocopies" of original paper charts. One cannot change images of these photocopies.
Selections of shallow contour, safety depth, safety contour, deep contour, symbols, depths, boundaries, light
sectors, shallow pattern and Update highlight in Chart page control only visibility of add-on layer(s) on top of the
ARCS chart image (manual updates are such an add-on layer). For more information about manual updates, see the
chapter on manual updates.
Chart Alert highlight: Select ON/OFF to show/hide highlight of chart alerts.
9-34
Chart page
Black and grey color symbol:
This symbol is used to verify that you can distinguish black (frame of symbol) and
grey (inner part of symbol) colors with current contrast and brilliance settings.
DISP dimmer: Use this control to adjust dimming of the display. The text "CALIB"
indicates that the dimmer setting is within the calibration values. Monitor brilliance
is restored to calibrated state by doing the following:
1. Put the cursor on the calibration bar and spin the scrollwheel to show "CALIB".
2. Select "Set Std Display" from the menu.
3. Press and hold down any one of the F1-F4 keys more than two seconds on the
Control Unit RCU-015.
Note: Use of the brightness control may inhibit visibility of information at night.
Palette: Select the appropriate palette for the display depending on the brightness of
the bridge.
Shallow contour: Set the value of the shallow water contour. For more information,
see "Setting values for Shallow contour, Safety contour and Deep contour" on page
8-66.
Safety depth: Set the value of the safety depth. Spot soundings below the safety
depth are highlighted.
Safety contour: Set the value of the safety contour. Visible safety contour is equal
to set value or if the contour of set value is not available then the visible safety
contour is next deeper contour than safety contour. For more information, see
"Setting values for Shallow contour, Safety contour and Deep contour" on page
8-66.
Note: The system uses the safety contour also for chart alerts.
Deep contour: Set the deep-water contour. For more information, see "Setting
values for Shallow contour, Safety contour and Deep contour" on page
8-66.
TM reset: In the true motion mode, own ship moves until it reaches the true motion
reset borderline (set here), then it jumps back to an opposite position on screen
based on its course. Set the limit for TM reset (in percentage).
Chart alert highlight: Enable or disable highlight of chart alerts.