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12. Programming the Transmitter
a) Function "1:EPA": Setting the Maximum Servo Travel
With the EPA setting (End Point Adjustment) you can precisely determine how
large the maximum permitted turn/travel for the steering, throttle or additional
servo may be on each side.
This function is typically used to protect the servo mechanism from mechanically
hitting an obstacle when it is at its full extent.
To do this, you can set a value from 0% - 120%. The smaller the value, the
shorter the servo travel on the corresponding side (fig 16).
Proceed as follows:
• From within the main menu (see fig. 5) press the "ENTER" button, then you
can use the "+" or "-" buttons to select the "1:EPA" function (fig 14).
• Then press the "ENTER" button again to reach the settings menu (fig 15).
• You can now use the "ENTER" button to select which value is to be set (the
value is framed in black).
• The value itself (factory setting 100%) can be adjusted between 0% and
120% with the "+" and "-" buttons.
• Exit the menu with the "EXIT" button, the settings are automatically saved.
As long as you have not programmed a direction reverse (Reverse) for one of
the channels, the relation between the settings for left and right turning and the
limitation of the servo travel can be seen in figures 15 and 16. The display
shows "F" (="Forwards") or "B" (= "Backwards") note the direction of rotation
in fig 16.
Which direction of rotation (or drive control unit setting) you limit is of course
dependent on your model.
Set the maximum possible steering deflection for the steering before the steering servo hits/fully extends and begins
to emit a humming noise. If a lesser steering deflection should become necessary for later operation (for fast or slow
driving), this can be set later using the so-called "dual rate" function.
If you use an electronic drive control unit for the drive function, you can also define a maximum control value. However,
in order to be able to use the highest motor speed possible, you should not set a value below 100% for both directions.
In order to make the model slower for a beginner, set the forward drive to a lower value (e.g. 70%). The braking
function (or reverse) can be left at 100%, this leaves the drive control unit with maximum braking strength.
Function11.2V
1:EPA
2:D/R
3:S_TRIM
4:REV
EPA 11.2V
ST TH AUX
F
100%
100% 100%
B 100% 100% 100%
Figure 14
Figure 15
Figure 16
0
50%
50%
100%
100%
120%
120%
F
B
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