Eagle Electronics 500C manual Map Fix, To configure a map fix

Map Fix

Map Fix is used with charts or maps. This system asks for a reference position in latitude/longitude, which you take from a marked location on the map. It then shows the present position as distance on the map from that reference point.

For example, if it shows a distance of UP 4.00" and LEFT 0.50", you then measure up four inches and to the left a half-inch from the refer- ence point on the map to find your location.

To configure a map fix:

To use this format, you need to follow these steps in order. First, take your map of the area and determine a reference latitude/longitude. (Note: in order for this system to work, the latitude/longitude lines must be parallel with the edge of the map. USGS maps are parallel, others may not be. Also, this works better with smaller scale maps, such as 1:24000.) The reference position can be anywhere on the map, but the closer it is to your location, the smaller the numbers will be that you'll have to deal with.

Once you've decided on a reference position, you can save it as a waypoint. See the waypoint section for information on saving a waypoint. Save the reference position as a waypoint. Exit the waypoint screens.

1.Press MENUMENU↓ to GPS SETUPENT.

2.Press ↓ to COORDINATE SYSTEMENT.

3.Press ↓ to SETUP MAP FIXENT.

The screen below appears, and MAP SCALE is highlighted. Press ENT and enter the map's scale. This is generally at the bottom of the paper map. It's shown as a ratio, for example 1:24000. Press EXIT and the unit re- turns to the Configure Map Fix screen.

Configure a map fix so the unit can find your position on a printed

chart or topographical map.

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