NorthStar 958, Руководство оператора

Страница: 57 / 232

Chapter 4 - Using the Chart Screen
958 Operator’s Manual, Rev. A Page 49
function of the key; the lower part (in blue) shows the current
status of the function:
You press the
CONTROL
key once to select the key’s function
(a small arrow appears next to the function). You then press
the key again to select the key’s status (a small arrow appears
next to the status). To choose
CHART
or
RADAR
, press the key
repeatedly until it shows the status you want:
You control only one function—chart or radar—at a time.
Rotating the chart
The chart rotation feature lets you change the angle of the
charts that are displayed on the
CHART
screen. As long as
you’re in vessel mode, you can turn charts to any one of the
following angles:
•
North up - You’ll see north pointing straight upwards (the
chart isn’t turned).
•
Course-up - You’ll see your vessel’s current direction of
travel—whatever that direction is—pointing straight
upwards. Course-up represents your true COG as
determined by the GPS receiver. The 958 ignores any
course changes if your speed is under half a knot. The
chart will rotate sooner for rapid turns than for slower
ones.
NOTE:
Your COG is often different from the heading, so what you see straight
ahead in the real world may be different from what’s displayed on the
screen.
Function (for example, control)
Status (for example, chart)