Pitch Curves - GRAUPNER MX-12 Programming Manual

Function mode HELICOPTER

Pitch Curves

trim lever has no effect on positions 1 or throttle hold.
Note: Making changes to the throttle trim lever does
not change the input values for any of the points
on the throttle curve; it merely makes adjust-
ments to the engine idle speed postition.
Output value
Graphic display
POINT
P-LOW : Full Slow position P-3
P-1 : Stick 1/4 position P-HIGH : Full High position
P-MID : Stick Center position * Point position is fixed
Hovering Throttle Lever Settings
The Hovering Throttle lever increases or decrease the
engine output power for the middle three points set for
the middle three points set for the throttle curve. As
shown in the figure below, use of the hovering throttle
lever shifts the curve upward or downward parallel with
the original curve. Therefore, operation of the hovering
throttle knob does not cause any change to the original
settings of the throttle curve.
The throttle trim range will affect the throttle curve as
shown.
The adjustable range of output using the hovering thrott-
le lever is approximately +/- 9%.
Note: The Hovering Throttle has no effect on flight
mode switch position 1.
Throttle Trim
Operating Range
P-LOW
: Stick 3/4 position
Pitch Curves
Adjustment of the pitch curve is very similar to the thrott-
le curve adjustment described in the preceding section.
A thorough understanding of the Throttle Curve Section
will make pitch curve adjustment easier to understand.
There are three independent types of pitch curves
available: Normal, Stunt, and Hold. Each pitch curve
contains five adjustable points: LOW 1, MID 3, and
HIGH.
Note: The pitch curve for the Throttle Hold function
can only be set if this system is activated.
Flight Mode SW position
Output position
Stick position
Hovering Throttle Knob
Operating Range (Parallel)
Output Value
P-MID P-HIGH
Throttle Stick
Graphic display
Go to Revolution
Mixing menu
Go to Throttle Curve
menu
Select function to
change
Accessing the Pitch Curve Function
1. Place the transmitter power switch in the ON positi-
on.
2. Press the Down and Select keys simultaneously
to enter the Function mode.
3. Press either the Up and Down key until PITCH
appears in the top of the LCD.
Note: Use NORMAL for hover curses and STUNT for
stunt curves. We will concentrate on the ho-
vering curve during this example.
4. Press the Select key to select the point of the curve
you want to change.
5. Press either the (+) or (-) key to change the value of
the current curve point. The range of each point is
0-100% in 0.5% intervals.
Note: In each curve, the factory setting INH indicates
Inhibited for points 1 and 3. These values are
25% and 75% respectively, if no value changes
are made to any other points. If any of the other
points have been changed while these points
were inhibited, the inhibited points will change
to plot a smooth curve. If you want to keep
this from happening, press the Select key to
display the positions 1 and 3, then press the (+)
or (-) key to activate each point.
6. To set curves for STUNT mode, press the Select to
highlight the NORM function, then press the (+) or
(-) key to select the STUNT function, Repeat Steps 4
and 5 to complete the procedure.
7. To set the curves for the Throttle Hold mode "H",
Function mode HELICOPTER
Change Value/Switch
selection
Reset POS value to
0 or Inhibit function
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