Lowrance electronic AirMap 1000 User Manual

Page 90

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 and
Taiwan 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 alternate 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 al-
ternate.

NOTE: When the position format is changed, it affects the way all posi-
tions are shown on all screens. This includes waypoints.

To select a coordinate system:
To change the coordinate system, press

ENT

while

OORDINATE

YSTEM

highlighted. Press the

↑ or ↓ arrow keys to highlight the desired for-

mat. Press

ENT

to select it. Press

EXIT

to erase the menus.

To setup Loran TD:

NOTE:

If the Loran TD conversion is chosen, you must enter the local Lo-
ran chain identification for the master and slaves. Do this by se-
lecting "Setup Loran TD" at the bottom of the "Coordinate System"
menu and select the ID. Press

EXIT

to erase this menu.

At left, Setup Loran TD option on the Coordinate System Menu.

At right, Configure Loran TD 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