Lowrance electronic Lowrance iWAY 250C - Manual (Page 50)

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WAAS means your GPS is receiving reliable correction signals from the
FAA's Wide Area Augmentation System. WAAS is designed for use in
aircraft but occasionally terrestrial vehicles can attain a WAAS lock.
This is the most accurate position signal available.
EPE (Estimated Position Error)
The Estimated Position Error or EPE is shown right next to the Cur-
rent Position Lock buttons. This value represents the expected error
from a benchmark location.
In other words, if the EPE shows 50 feet, then the position shown by
the unit is estimated to be within 50 feet of the actual location. This
also gives you an indicator of the fix quality the unit currently has.
The smaller the position error number the better (and more accurate)
the fix is. If the position error flashes dashes then the unit hasn't
locked onto the satellites and the number shown isn't valid.
Satellite Display
A white circle that serves as a graphical view of the satellites overhead
fills much of the right half of the screen. Each satellite is shown on the
circular chart relative to your position. The GPS receiver is tracking
satellites that are in blue type. The receiver hasn't locked onto a satel-
lite if the number is in dark blue, so it isn't being used to track the po-
sition.
Lat/Lon Coordinates
Beneath the Satellite Display, you can see your Coordinates in Lati-
tude and Longitude. These numbers can be used to pinpoint your loca-
tion on any map, or to create contacts at your position on another GPS.
Transfer Data
In addition to storing media files such as music and pictures you can
use MMC or SD Cards to store and transfer GPS data recorded on the
unit. This is a handy way to save contacts that you have created, trails
of places you have been and routes you have set up.
To save data to your memory card or to load data from your memory
card choose the
T
RANSFER
D
ATA
command from the Options Menu. Tell
the iWAY whether you want to
L
OAD
data for the iWAY to display and
use or
S
AVE
data to the card to store or transfer it to another GPS unit.
If you want to Load data choose the dropdown box and make sure to
select the filename of the GPS Data File you want to load. If you are
saving data you can select the Filename text box to enter a new name
describing the data you are saving.