Lowrance 540c baja 操作ガイド

79 

(Universal Transverse Mercator) projection; MGRS (Standard); MGRS 

(Standard + 10); Map Fix; Loran TD; British, Irish, Finnish, German, 

New Zealand, Swedish, Swiss, Taiwan and Greek. 
UTM's are marked on USGS topographic charts. This system divides 

the Earth into 60 zones, each 6 degrees wide in longitude. 
British, Irish, Finnish, German, New Zealand, Swedish, Swiss, Taiwan, 

and Greek grid systems are the national coordinate system used only in 

their respective countries. In order to use these grid systems, you must 

be in the respective country. This unit will pick the matching datum for 

you when you select the grid. See the entry on Map Datum Selection for 

more information. 
The Military Grid Reference System (MGRS) uses two grid lettering 

schemes, which are referred to as standard and standard + 10 MGRS 

on this unit. Your position and datum in use determines which one to 

use. If you use standard, and your position is off significantly, then try 

the alternate. 
NOTE:  

When the position format is changed, it affects the way all positions 

are shown on all screens. This includes waypoints. 

To change the coordinate system 

1. Press 

 while 

 is highlighted.  

2. Use 

↑  ↓ to highlight the desired format and press 

. Press 

 

repeatedly to return to the map display. 

To set up Loran TD: 
If the Loran TD conversion is chosen, you must enter the local Loran 

chain identification for the master and slaves. Highlight 

 

at the bottom of the Coordinate System menu and select the ID. Press 

 to close this menu.