Garmin GPS 120 - Manual (Page 48)

HflUICflTMII SETUP
№ITIOH FORMAT:
HAP DATUM:
UGS 8^
ODISOALE:
*0.25
UMTS!
Nauiicol
HEADING:
Guio Hag E084
The CPS 120 corns
with the htilude and
longituik position jomat
and WGS 84 map
datum as the default set-
tings.
The WGS 84 map
datum is a worldwide
datum that’s suitohie/or
use with most govern­
ment charts. Only
change the map datum if
the charts you are using
speeijiy a different map
datum in the legend.
WARN/NGI
Using the wrong datum
can seriously effect the
accuracy of your GPS.
Always set the CPS to
the same datum indicat­
ed on the charts you
are currently using.
The navigation setup page is used to selea units of
measurement for position format, map datum, GDI
scale, and distance, speed and heading information.
The default position setting for the GPS 120 is
latitude and longitude in degrees and minutes
(hddd"mm.mmm’). You may also select degrees,
minutes and seconds (hddd“mm’ss.s"); degrees
only Giddd.ddddd"); UTM coordinates; or British,
Irish, German, Swedish or Swiss Grid formats. To
select a format:
1. M ove the field highlight to the 'position form af
field and press the Q key.
2. U sethe ▲ and '▼ keystoseieetthedesired
setting. C onhrm the setting by pressing
KEY WEST HARBOR
AND APPROACHES
FLORIDA
M ap Daium
SOUNDMOSlNfCCT
A1 MEW LONVWAlcn
The map datum field is located just below the
position format field, and comes with a WGS 84
default setting. Although 105 total map datums are
available for use (see the map datum listing in
appendix D), you should only change the datum if
you are using charts that specify a different datum
than WGS 84. To enter a different map datura;
1. M ove the field highlight to the 'datum ' field and
press then key.
2. U se the ▲ and '▼ keys to toggle through and
select the desired setting. C onfirm the setting by
pressing the B key.
40