87SPEKTRUM DX7 • HELICOPTER PROGRAMMING GUIDE
Throttle Curve
The DX7 offers three (3) separate throttle curves with five (5) adjustable points per curve. This function allows
you to adust the throttle curve to optimize engine rpm at a particular pitch setting. Once the throttle curves are
established, each can be activated in flight using the 3-position flight mode switch. The flight mode switch offers
three (3) selectable curves: N=Normal, 1=Stunt 1, 2=Stunt 2.
The N, or Normal, position should be used for starting the engine and hovering. Positions 1 and 2, or Stunt 1
and Stunt 2, should be used for aerobatic maneuvers and forward flight.
Note: The throttle trim and hovering throttle lever are only operable when the flight mode switch
is in the Normal position. Thus, in the 1 or 2 positions, these two functions have no effect.
Each of the five (5) positions of the throttle curve are independently adjustable from 0–100%. These five (5)
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 below. Individual
points can be activated and increased/decreased to suit your specific needs.
To Access the Throttle Curve Function
Press the DowN and SELECT keys simultaneously to access the System Mode.
In System Mode, use the UP or DowN keys to select the THRO CURVE NORM screen.
Press the SELECT button to access pitch points L (Low), 1, 2, 3, or H (High) or EXPO.
Press the INCREASE or DECREASE keys to change the selected pitch value or expo on/off.
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