Operation Manual IQ-MOTOR-eco GPS
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5
Navigation
Navigation activities without operating GPS-Receivers is unthinkable these days. Indeed
a chain of satellites is orbiting the Globe. It provides the possibility to determine worldwide
one’s own position very precisely, if minimum 4 satellites are received simultaneously.
The IQ-MOTOR-eco GPS calculates several readouts by position determination made by GPS.
5.1
Assessment of GPS reception quality
The IQ-MOTOR-eco GPS is fitted with a 20-channel GPS-receiver which is featured with lesser
power
consumption and also a significantly shorter satellite detection time. Precision of position is
between 5 to 40m. As an average one may assume approx. 20 m.
Because the receiving strength of the satellite signals is only approx. 1/1000 of mobile radios, these
radio sets and other disruptive factors (like notebooks) should be operated as far away as possible
from the
IQ-MOTOR-eco GPS.
The number of
received satellites is shown on the upper right side of the bar scale. The longer the bar,
the more precise the reception quality is.
As soon as the instrument has sufficient GPS satellite reception after energising (min. four), the
symbol
GPS
is shown. All functions related to GPS mode are operative when the GPS symbol
is visible.
5.2
Compass and flight direction
In contrast to a standard magnetic compass which is oriented to the magnetic lines of force of the
Globe, the GPS compass can show
direction only when the user moves about. However, it has the
advantage that it is not subject to any grid deviation and does not show any deviation as a result of
iron or any magnetic material either. Its zero point always corresponds with true geographic north
(= 0 or 360 degrees).
The course, that is the flight direction
(=
Track), is calculated from a series of positions. If the user
remains stationary at the same location, then the course (track) and compass needles are undefined.
The exact course, (this is the direction in which the user travels over ground), is always at the top of the
compass, but can also be read in the display
Track.
The course is displayed from 3km/h speed.
5.2.1 Pointer illustration in the compass rose
- Bearing take-off site
(pointer flashing)
Compass North
GPS
