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Attention!
It is not allowed to use these limits to protect the aerial
from running against obstructions. If a test run should be
necessary for adjustments at a later date, these limits
would be overridden and the aerial thus could be dama-
ged. The following illustration shows the relations.
General
A polarmount aerial is constructed so that the imaginary line,
on which the satellites are orbiting at a distance of 36000 km
above the equator, can be followed by a single control func-
tion of the motor.
There are a number of different motor types and motor
fixings.
The action radius of the aerial (max. deflection to the east and
the west) can be restricted by limit switches inside the motor,
or by mechanical end stops. This is especially necessary to
protect the aerial from running against obstructions (walls,
trees, etc).
In addition, the receiver is provided with electronic limit swit-
ches (similar to tab stops on a typewriter) for restricting the
action radius of the aerial.
Basic Adjustment of the Polarmount Aerial
L 1
L 2
63° 23° 19° 16°
In programme mode, the aerial runs
only to these positions,
not to the limits.
Different satellite positions
within the set limits.
mechanical or electrical
end stop (East)
mechanical or electrical
end stop (West)
set limits
Position 0000
= zero point
Limit 2
e.g. 0650
Limit 1
e.g. 0020
Maximum stroke
restricted by electrical limit switches
or mechanical end stops.
mech. action radius of aerial
(restricted action radius)
Motor
Motor