Becker TRAFFIC ASSIST HIGHSPEED 7934 Manuel d'utilisateur télécharger pdf (Page 32)

31

Navigational mode

Navigational mode

What is navigation?

Navigation (Latin navigare = to travel

by sea) is generally understood to mean

finding the position of a vehicle, deter-

mining the direction of and distance

from the desired destination and establi-

shing and following a route to this desti-

nation. Navigational aids include the

stars, distinct objects, a compass and sa-

tellites.

The Traffic Assist Highspeed uses its

GPS receiver to find the vehicle's positi-

on. (The Global Positioning System

(GPS) was developed by the US military

in the 1970's as a missile guidance sys-

tem.

GPS is based on a total of 24 satellites

circling the earth which continuously

emit signals. The GPS receiver receives

these signals and uses the delay of each

of the signals to calculate its distance

from the individual satellites. In turn, it

can use this information to determine its

current geographical position.

The signals of at least three satellites are

needed to establish position. If four or

more signals are available, height above

sea level can also be calculated).

Traffic Assist Highspeed determines the

direction of and distance to the destinati-

on with the aid of a digital road atlas on

the SD card and the navigation compu-

ter.

For safety, directions to the designation

are mainly provided verbally. The di-

rection display and map diagram on the

touch screen are further aids.

!Safety information

• The road traffic act takes prece-

dence

in all circumstances. The na-

vigational

system is only an aid.

The data/details provided may in

some cases be incorrect. The driver

must always decide whether to fol-

low the details given or not.

We accept no liability for the navi-

gational system issuing incorrect

details.

• When first started up, it may take

up to 30 minutes before a position

can be determined.

• Precedence should always be given

to actual traffic signs and local traf-

fic rules.

• The directions only relate to cars.

Special recommendations and rules

for other vehicles (e.g. commercial

vehicles) are not taken into consi-

deration.

• Destinations may only be input

when the vehicle is stationary.

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