Garmin GPS 90 User Manual download pdf (Page 51)

The GPS 90 has four available operating modes:

Normal Mode operates the unit at maximum per-

f o rmance, and should provide a battery life of 15

hours on alkaline batteries.

Battery Saver Mode is suitable for most applica-

tions, and extends battery life to up to 20 hours on

alkaline batteries by reducing the unit’s update rate

when navigational conditions permit (e.g., you’re

travelling a steady course without constant speed

or heading variations).

Simulator Mode allows you to operate the unit

without acquiring satellites, and is ideal for practic-

ing or entering waypoints and routes while at

home.

A u t o L o c a t e

T M

M o d e f o rces the receiver to ‘find

itself’, or search for a new set of satellites in situa-

tions where you have moved more than 300 miles

from the unit’s last known position.

To select an operating mode:

1. Move the ﬁeld highlight to the ‘mode’ ﬁeld and press

2. Use the arrow keypad to choose a mode and press

The initial position ﬁeld allows you to deﬁne a starting

point for simulated trips or name an initial position to

speed up the acquisition process if the unit has moved

m o re than several hundred miles with the power off .

When the GPS 90 is in simulator mode, you may select a

known waypoint as your starting position, or define a

distance and bearing from a known waypoint to calcu-

late your starting latitude and longitude.

When the unit is in not in simulator mode, the bear-

ing and distance fields will not be available. Keep in

mind that while entering an initial position may speed

up acquisition, entering an incorrect initial position will

have an adverse effect on the receiver’s ability to ﬁnd the

necessary satellites to calculate an accurate position.

Setup Menu

Selecting an

Operating

Mode

Selecting an operating

mode.

Entering an initial

position reference.

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Garmin GPS 90 User Manual Page 51

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