Futaba 3PK - Manual (Page 20)

Exponential (ST-EXP, TH-EXP) Levels LV1, LV2, LV3
DEFINITIONS:
•
Exponential adjusts the sensitivity of the servo around the neutral position.
Exponential creates a true curve, not a hard climb to a certain point then a softer
climb from there. Negative exponential makes the servo less responsive around
center; positive exponential makes the servo significantly more responsive
around center. Only exponential is available for steering and braking.
•
TH-EXP offers far more than just exponential for forward: it also offers a 5-point
throttle “curve” and a Variable Trace Rate (VTR) option.
•
VTR: Variable Trace Rate is basically a 3-point line, where one point may be
raised or lowered, forming two straight lines, and where the user can select the
point where the line breaks into two.
•
The “curve” function offers 5 points along the range of the servo, and draws
straight lines of response between each point. It is not a true curve, as is
exponential, and there are noticeable steps in the responsiveness as each rate of
response is entered.
20
Expo Curve Expo Curve Throttle Curve
(forward throttle only)
Variable Trace Rate (VTR)
(forward throttle only)