NorthStar Navigation NorthStar 8000i - Manual (Page 88)

88 Northstar 8000i Operation Manual
4. The
Bearing Mode button shows the current setting. Select the
button if you want to change to another setting and a drop down list
of choices appears.
5. Select the new setting. The new setting is applied immediately and
stays until you change it again.
6. When you are finished, select – Navigation.
12.2 Select the variation source
A compass points to the magnetic North pole, which is several hundred miles from
the true (geographic) North pole. The difference between these two angles is
known as magnetic variation. The amount of magnetic variation depends upon
your position. It also changes over time.
You can use this setting to specify whether the 8000i calculates the amount of
magnetic variation automatically or whether you want to enter it manually.
Automatic is the default.
To select the variation source:
1. Select
Display.
2. Select
Setup from the control panel.
3. Select
+ Navigation to show a list of position specification options.
4. The
Variation Source button shows the current setting. Select the
button if you want to change to another setting and a drop down list
appears. There are two choices:
ƒ Automatic - the magnetic variation is calculated automatically
ƒ Manual - you must enter the amount of magnetic variation (see
"Set the manual variation" page 88)
5. Select the new setting. The new setting is applied immediately and
stays until you change it again.
6. When you are finished, select - Navigation.
12.3 Set the manual variation
If you've selected the variation source as Manual (see "Select the variation source"),
you can use this setting to specify the amount of magnetic variation in your area.
0° is the default.
To set the manual variation:
1. Select
Display.
2. Select
Setup from the control panel.
3. Select
+ Navigation to show a list of position specification options.
4. The
Manual Variation button shows the current setting.
5. Select
EDIT if you want to change the setting, then enter the new
amount of variation in degrees (if the variation is westerly, enter this as
a negative number, for example -5) then select OK. You don't need to
enter the degree symbol.