3. Instrumentation
3.1 Heading
The instrument leaves the factory with the compass calbrated. However, you
should recalibrate the compass every time you change the batteries. Place the
compass calibration grid on a wooden table away from metallic objects. You can
print this from the appendix in the manual. Make sure the grid is pointing north
correctly. You can check this with the GPS or with another compass.
At the center of the display is a circular indicator showing the heading by an arrow
on the outside and one on the inside. The outer arrow has three functions,
Magnetic compass, magnetic ADF and GPS ADF. To change this setting, go to the
33 kcom parameter and press
choose the desired value with
or
land press
to memorize the value. With a long pressure on the button
, you can change
rapidly to magnetic ADF.
Indicates magnetic north with an acuracy of 10°. This is shown on the anal.ogue
indicator at the center of the display by an arrow on the outside of the circle (in this
case the circle is static) and as a number of degrees on the multifunction display on
the bottom right. If you mount the VL100 in a vertical position, you can deactivate
the compass setting parameter 33 kcom to zero. In this case, the wind is tracked by
the GPS instead of using the compass reading. To change this setting, go to the 33
kcom parameter and press
o
to memorize the value.
- Switch on the VL100, go to the submenu link and press together
until
you see a flashing “0°”.
- Position the VL100 along the axis of the 0° on the calibration grid, press
to
confirm the position and after about 5 seconds, the Vl100 will emit a double beep
and show the new angle to position to.
- Repeat this procedure for the eight angles on the calibration grid.
- Press
to exit the procedure. The compass is now calibrated.
Magnetic ADF (automatic direction finder) indicates the direction to follow to
maintain a heading chosen by the pilot using an integrated magnetic compass.
This is a
enter of the valley. To setup an ADF heading, the
VL100 must be pointing in the direction we want to go and you have to use a long
pressure on the
button. Now you have memorized the new magnetic waypoint,
(or if you like, the new heading). When you memorize a new wp, the display
automatically goes to magnetic ADF mode followedd by a beep. This is then
confirmed when you see the circular analogue indicator flash in the center of the
3.1.1 Magnetic Compass
NB. To improve the accuracy of the compass you should do the following:
- keep the compass away from magnetic fields and metal objects
- use the VL100 with an inclination of less than 30°
- after changing the batteries, recalibrate the compass (see next paragraph).
3.1.2 Compass calibration
3.1.3
ADF
Magnetic
the value will start to flash, to change the value
press
and press
and
very important safety feature and is more important when you get close to
cloud base in lift. In this case you can fly towards the center of the valley, activate
the ADF (long pressure on the
button). and the center of the compass will start
to flash to show that it’s not indicating magnetic north, but the direction we just set
up. If we then lose sight of the ground, we only have to follow the outer arrow
which will take us into the c
Pag.10
COMPASS
