Thales Navigation Mobile Mapper - Manual (Page 12)

6
Initialization for First-Time Use
MobileMapper will walk you through the process of setting
up the receiver for first time use. This procedure is common-
ly referred to as “Initializing the Receiver”. The purpose of
this initialization is to provide MobileMapper with a general
knowledge of its approximate location.
This may seem a little confusing at first as why does a device
that is used to compute its position need to know where it’s
at? MobileMapper uses information from the GPS satellites
that orbit the Earth and if MobileMapper has an approximate
idea as to its location, it will refer to the almanac it has in
memory to select what satellites are overhead. From this in-
formation, MobileMapper can then select the satellites that
will give it the best information for computing its location.
Under normal use, MobileMapper will save the last position
it calculated and use that position the next time it is turned
on. However, when MobileMapper is new (or when memory
has been completely erased), it has no last position informa-
tion. Thus, MobileMapper can either start polling the satel-
lites to see which ones are overhead or you can provide it
with your approximate location allowing MobileMapper to
begin computing the initial position, known as “first fix.”
Follow these instructions to initialize MobileMapper:
1. Turn MobileMapper on by pressing the PWR button. The
unit turns on and displays the start-up screen, followed
by the Database Copyright screen and the language
selection screen.
2. Select your language using the up/down arrow to move
the cursor to this language. With the desired language
highlighted, press the ENTER button. The Warning
screen is then displayed for about 10 seconds.
Skipping Initialization
You can skip the initial-
ization process by press-
ing the NAV key anytime
after selecting the lan-
guage you want
MobileMapper to use
and accepting the agree-
ment. If MobileMapper is
able to collect satellite
data (i.e., have a clear
view of the sky) it will
begin to self-initialize.
This could take anywhere
from 3 to 14 minutes to
compute its position,
depending on how many
weeks have elapsed since
it was last used.
Start-up, Copyright &
Language Screens