Table of Contents
Advertisement
Saving a New Position
To save a position other than the cursor's or the
present position as a waypoint, first select the
waypoint number as described on the previous
page. Next, select "CREATE WAYPOINT". The
screen shown at the bottom of the previous page
appears. Select "ENTER POSITION". The screen
shown at right appears. Using the arrow keys,
enter the latitude and longitude of the position
that you want to save. (Note: latitude and longi-
tude is the default, however if UTM or other position format is in use, this
screen will let you enter the position in the format that's currently in use.)
Waypoint Averaging
Although electronic position finding devices such as this one show the
position in precise digital numbers, there is some ambiguity in the dis-
played position. With position pinning turned off, you can see this by watch-
ing the position displayed on the unit move while you're standing still. This
is due to many factors; SA, atmospheric conditions, the number of satel-
lites being tracked and their location relative to your position, and so on.
However, even with SA turned on, this GPS receiver can show surpris-
ingly accurate position information. If you wish to increase the accuracy
of a saved position, use the waypoint averaging method. This method
requires the unit to remain untouched at the location that you want to
save, preferably for at least one hour. Longer times will result in a better
position. The unit averages all of the positions reported by its GPS re-
ceiver, resulting in typically higher position accuracy.
To use this feature, first press the WPT key and
select a waypoint number, then select "CREATE
WAYPOINT". The screen in the middle of the pre-
vious page appears. Now select "AVERAGE
POSITION". The screen shown at right appears.
Your present position shows at the top of the
screen. A box with a plotter graphically shows
the movement of your average position. The num-
ber of positions or points taken appears next to
the plotter. The position is updated once per second. Now place the unit
where it has an unobstructed view of the sky. At the end of the position
gathering time, press the ENT key to save the averaged position.
37
Hide quick links:
Advertisement
Table of Contents
