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The factory setting for the throttle hold is inhibited. Adjust the throttle hold
value to deliver the proper engine RPM for your helicopter. The adjustable
range is -20 t50%. To shut the engine off during an autorotation, a
negative value may have to be input.
In Function Mode, use the scroll bar to select Throttle Hold and access by
pressing the scroll bar. Rotate the bar to highlight the INH icon and press the
bar to activate Throttle Hold. Highlight the HOLD Pos. icon and press the
bar. The Hold Pos. icon and value will now appear in a box and the value can
be adjusted by rotating the scroll bar.
Throttle Curve
The PCM9X offers up to five (5) separate throttle curves with seven (7)
adjustable points per curve. Three curves are available from the default setting,
with an extra two curves available if the Flight Mode Extra function is enabled
in the Device Select menu. This function allows you to customize the throttle
curve and pitch curve together to maximize engine performance at a particular
pitch setting.
Once the throttle curves are established, each can be activated in flight
using the three (3) position flight mode switch plus the two (2) additional
positions provided by the nominated extra flight mode switch in the system
menu. The flight switch offers five (5) selectable curves. N=Normal, 1=Stunt
1, 2=Stunt 2, 3=Stunt 3 and 4=Stunt 4. The N, or Normal, position should be
used for hovering. Positions 1, 2, 3, 4 or Stunt 1, Stunt 2, Stunt 3 and Stunt 4
should be used for aerobatic manoeuvres and forward flight.
Note:
The throttle
trim and hovering throttle knobs are only operable when the flight mode switch is in the
Normal position.
Thus, in the 1/2/3/4 positions, these two functions have no
effect. Each of the seven (7) positions of the throttle curve are independently
adjustable from 0 -100%. These seven (7) positions correspond to the position
of the throttle stick. The transmitter is factory preset to the throttle curve as
indicated by the solid line in the figure above. Individual middle points can
be activated and increased/decreased to suit your specific needs.
Exponential Throttle Curve Function
With the PCM9X system, individual throttle curves are selectable to be either
straight (linear) or curved (exponential). To select an exponential curve, use the
scroll bar to select and activate the exponential feature (an “on” will replace
the “off” on the screen). With the exponential function ON, you will notice
that any “sharp” angles of the throttle curve will become more “rounded” or
