Lowrance 7200c 操作指南

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If the Loran TD conversion is chosen, you must enter the local Lo-

ran chain identification for the master and slaves. Do this by select-

ing "Setup Loran TD" at the bottom of the "Coordinate System" 

menu, press 

, and select the ID. Press 

 to clear this menu. 

 

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 to find your location on the map. 
Configure a map fix: 
First, take your map of the area and determine a reference lati-

tude/longitude (Please note that 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.). 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 way-

point. See the waypoint section for information on saving a waypoint. 

Save the reference position as a waypoint. Exit from the waypoint 

screens.