GRAUPNER MC-20 HoTT Programming Manual page 275

This is similar for the option ...
»Channel 1 curve«
Channel 1 C U R V E
Input 0%
Curve Output 0%
off Point ? 0%
–
With this option, one or multiple points of the control
curve of the throttle/brake joystick can be infl uenced
in such a way that a pleasant or even purposeful
behavior is guaranteed.
An example of this would be the "dead" travel of
spoilers. The fl aps fi rst pass through this after a
certain "idle travel" of the brake joystick from the
wing. With a corresponding "bending" of the curve,
the "dead' travel is covered more quickly. The
spoilers come out from the wing earlier and then
the remaining travel can be controlled with greater
sensitivity. (This also applies for the control of a motor
in the same manner, which can be controlled through
C1 as an alternative.)
Finally, the receiver's behavior in the event of a failure
should certainly be established in the menu...
»Fail Safe«
(page 128)
F A I L
Pos
hold
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
DELAY : 0.25s
+
... because "doing nothing" is the worst thing which
can be done for a winged model.
In the transmitter's home position, "Hold" is specifi ed
and "Hold" means that the receiver continuously
sends the last correctly recognized control impulse to
the servos in the model. In the best case scenario the
model fl ies straight ahead for an indefi nite amount of
time and then hopefully "lands" somewhere without
causing signifi cant damage! However, if something
like this happens in the wrong place at the wrong
time, the model may become uncontrollable and
"tear" across the fl ight fi eld completely out of control,
putting the pilot and/or spectators at risk. Therefore,
it would obviously be benefi cial to program the the
function "Motor off" at the very least, in order to
prevent such risks.
With electro gliders, on the other hand, the fail-safe
setting "motor off" can also be used, for example, for
outlanding, to reliably stop the motor or its propeller
by immediately switching off the transmitter after the
landing.
The author usually prefers a "braking fi nish" within
eyeshot to fl oating off "somewhere else".
(page 208)
S A F E
STO
Programming examples - Winged models
275