Garmin GPS 2 Manual

							Screen Backlighting
The GPS II’s backlight feature illuminates the screen display for a user-defined
interval (the default is 15 seconds) after every keystroke. There are three stages of
backlighting. When backlighting is on, a bulb icon will appear at the bottom left of
the sky view (Fig. 25). To adjust the duration of the screen backlighting, refer to the
operation setup section (see page 71). 
To turn the screen backlighting on:
1. Press the red power key.
2. Cycle through the three levels of backlight by pressing the red power key.
To turn the screen backlighting off:
1. Press the red power key.
Whenever the GPS II’s backlighting is off, the bulb icon disappears from the
satellite status page.Fig. 25
Note: Using the screen back-
lighting  can  greatly  re d u c e
b a t t e ry  life.  If  you’re  using
your GPS primarily in day-
light hours, you should keep
the backlight timeout at the
default 15-second setting.REFERENCE
25GPS II  7/23/98 4:04 PM  Page 25 
						

							Position Page
The second page in the GPS II’s main page sequence is the position page. This
page shows you where you are, what direction you’re heading, and how fast you’re
going (up to 103 mph), and is most useful when you are traveling without an active
destination waypoint. The graphic heading display at the top of the page indicates
the direction you’re heading (only while you’re moving).
Directly below this display are the track, speed, and trip odometer fields
(default). Track is the compass direction representing your actual course over the
ground, and speed is how fast you’re moving. The lower left-hand corner of the page
shows your current latitude and longitude in degrees and minutes. The GPS II uses
this basic information to mark exact positions as waypoints, which help guide you
from one place to another. The lower right-hand corner of the page contains the alti-
tude field (default).
Both the trip odometer and the altitude fields are user selectable, and both offer
a trip odometer, trip timer, and elapsed time so that you can always be sure of view-
ing this information regardless of the option you’ve selected to view in the other
user-selectable field. The graphic compass display is
designed to show your current
track and doesn’t serve as a
true magnetic compass while
you’re standing still.REFERENCE
26GPS II  7/23/98 4:04 PM  Page 26 
						

							27Available user-selectable options on the position page are:
Trip Odometer (TRIP)— shows the total distance traveled since last reset.
Trip Timer (TTIME)— total (cumulative) time in which a ground speed has
been maintained since last reset.
Elapsed Time (ELPSD)— shows the overall hours and minutes since last reset.
Average Speed (AVSPD)— calculates the average speed traveled.
Maximum Speed (MXSPD)— shows the maximum speed traveled since last
reset.
Altitude (ALT)— measurement of a vertical distance above sea level. 
To reset a timer, speed measurement, or odometer:
1. Highlight the user-selectable field, and press ENTER.
2. Press ENTER to confirm the ‘RESET?’ prompt, or QUIT to exit.
The trip odometer, trip timer, and average speed fields are linked, so resetting
one of these options in one user-selectable field will automatically reset the corre-
sponding data in the other. That way, the information provided in these fields is rela-
tive to your current trip.REFERENCE
The position format and units
of measure for speed, distance,
position, and altitude are all
u s e r-selectable  through  the
navigation  setup  page  (see
pages 74). The 12/24 hour
clock and time offset options
are available from the system
setup page (see page 72).GPS II  7/23/98 4:04 PM  Page 27 
						

							28Maximum Speed Field
To obtain the most accurate reading of average speed, keep in mind that due to
the sensitivity of the GPS II’s antenna, your maximum speed value may include the
effects of rapid movement, such as swinging your arm while holding the unit.
To reset the maximum speed field:
1. Highlight the ‘maximum speed’ field, and press ENTER.
2. Press ENTER to confirm the ‘RESET?’ prompt (Fig. 28a).
Altitude Field
When the GPS II is acquiring satellites or navigating in the 2D mode, the last
known altitude will be used to compute your position. If the altitude shown is off by
several hundred feet, you can manually enter your altitude for greater accuracy. In
cases where the GPS II has only 2D coverage, entering your approximate altitude will
enable the receiver to determine a 3D fix.
To enter an altitude:
1. Highlight the ‘alt’ field, and press ENTER (Fig. 28b).
2. Enter a value, and press ENTER.REFERENCE
Fig. 28a
Fig. 28bGPS II  7/23/98 4:04 PM  Page 28 
						

							29Marking and Saving Waypoints
The GPS II allows you to mark, store, and use up to 250 positions as waypoints.
Waypoints serve as electronic markers that let you keep track of starting points, des-
tinations, navaids, etc. A waypoint position can be entered by taking an instant elec-
tronic fix, by manually entering a coordinate, or by referencing a bearing and dis-
tance to an existing waypoint.
To mark your present position:
1. Press MARK. The mark position page will appear, showing the captured position and a
default three-digit waypoint name (Fig. 29).
2. Press ENTER.
If you try to mark a waypoint
without having a position fix,
you’ll be notified with a ‘No
Position’ message.Fig. 29REFERENCEGPS II  7/23/98 4:04 PM  Page 29 
						

							30Marking a Position
When marking a position, you may also choose to change the default name or
add the waypoint to a route.
To change the default position name:
1. Highlight the ‘name’ field, and press ENTER.
2. Enter a value in the appropriate ‘character’ field (Fig. 30a), highlight ‘SAVE?’, and press
ENTER.
If you’d like to add this waypoint to a route:
1. Highlight the ‘add to route number’ field, press ENTER, and enter a route number (Fig. 30b).
2. Press ENTER to confirm the route number, and ENTER again to save the waypoint.
To save the marked waypoint:
1. Highlight ‘SAVE?’, and press ENTER.
Fig. 30bFig 30aREFERENCEGPS II  7/23/98 4:04 PM  Page 30 
						

							Waypoint Pages
The GPS II has three waypoint pages that let you manage a large number of way-
points quickly. These pages— nearest waypoints, waypoint list, and waypoint defini-
tion— can be accessed through the menu page.
To select a waypoint page:
1. Access the menu page, and highlight a waypoint page (Fig. 31).
2. Press ENTER.Use the function prompts on
the left side of the waypoint
definition  page  to  re v i e w,
rename, or delete stored way-
points, and to create new way-
points manually.REFERENCE
31
Fig 31GPS II  7/23/98 4:04 PM  Page 31 
						

							Nearest Waypoints Page
The nearest waypoints page shows the nine nearest waypoints that are within
100 miles of your present position, with the bearing and distance noted for each
waypoint (Fig. 32a). This page will also let you retrieve a waypoint definition page or
GOTO a selected waypoint right from the list.
To review the waypoint definition page of a highlighted waypoint from
the list:
1. Highlight a waypoint.
2. Press ENTER.
To return to the nearest waypoint page:
1. Highlight ‘DONE?’ (Fig. 32b).
2. Press ENTER.
To GOTO a highlighted list waypoint:
1. Highlight a waypoint, and press GOTO.
2. Press ENTER. Fig. 32a
Fig. 32bREFERENCE
32GPS II  7/23/98 4:04 PM  Page 32 
						

							Waypoint List Page
The waypoint list page provides a complete list of all waypoints currently stored
in the GPS II. If a waypoint is currently used in a route, the lowest route number
will be indicated to the left of the waypoint name. The total number of empty and
used waypoints is indicated above the waypoint list. From the waypoint list page,
you can retrieve a waypoint definition page, delete all user-defined waypoints, or
GOTO a selected waypoint.
To review the waypoint definition page of a highlighted list waypoint:
1. Follow the steps outlined on the previous page.
To delete all user-defined waypoints:
1. Highlight ‘DEL ALL WPTS?’ (Fig. 33a), and press ENTER.
A warning page will appear, asking if you are sure you want to delete all user-
defined waypoints and routes.
If you want to continue and delete:
1. Highlight ‘Yes?’ (Fig. 33b), and press ENTER. Fig. 33a
Fig. 33bREFERENCE
33GPS II  7/23/98 4:04 PM  Page 33 
						

							34Waypoint Definition Page
The waypoint definition page lets you create new waypoints manually, or review
and edit existing waypoints. To create a new waypoint manually, you’ll need to know
its position coordinates or its approximate distance and bearing from an existing
waypoint.
To create a waypoint by entering coordinates:
1. From the waypoint definition page, highlight ‘NEW?’ (Fig. 34a), and press ENTER.
2. Enter a waypoint name, and press ENTER
3. Enter your position (Fig. 34b), and press ENTER.
4. Highlight ‘DONE?’, and press ENTER.
Fig. 34b Fig. 34aREFERENCEGPS II  7/23/98 4:04 PM  Page 34