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RayChart 420/420D Chartplotter
2.2 Switching on/off
This section explains how to switch the chartplotter on and off.
To turn the chartplotter display unit on, press the POWER key. The keys light
up, the display unit beeps and the RayChart logo is displayed, followed by the
following warning:
WARNING
THE ELECTRONIC CHART IS AN AID TO
NAVIGATION DESIGNED TO FACILITATE
THE USE OF AUTHORISED GOVERNMENT
CHARTS, NOT TO REPLACE THEM. ONLY
OFFICIAL GOVERNMENT CHARTS AND
NOTICES TO MARINERS CONTAIN ALL
INFORMATION NEEDED FOR THE SAFETY
OF NAVIGATION AND, AS ALWAYS, THE
CAPTAIN IS RESPONSIBLE FOR THEIR
PROPER USE.
Press “ENTER” to continue.
When you have read and understood the warning, press the ENTER key. The
chart is displayed.
If this is the first time that the chartplotter has been switched on, and no chart
card is installed, the display shows the small-scale world map at Lat 0°/Lon 0°.
Otherwise, the display shows the selected chart area and any data that were
displayed when the display unit was last used.
To turn the display unit off, press and hold the POWER key for at least 3 sec-
onds. A countdown timer is displayed; when it reaches zero the display and key
back-lights extinguish.
Changing the lighting and contrast
You can change the level of backlighting and contrast for the screen. The key
backlighting remains on to enable the keys to be seen at all times.
To change the lighting and contrast:
1. Press the POWER key to display the lighting controls: