Spektrum DX8 Instruction Manual page 24

With the transmitter on and the main or telemetry screen up, press the roller.
Note: Your aircraft manual may refer to this as changing transmitter flight
control directions in the Control Test/Reverse Controls section.
Highlight Travel then rotate the roller to access the Reversing screen.
Highlight the channel desired and press the roller to select.
Highlight the REV NOR function then press the roller to access. Press the roller to
toggle between NOR and REV.
With the transmitter on and the main or telemetry screen displayed, press the
roller. The Function list displays. Rotate the roller to highlight Servo Setup then
press to access the Servo Setup screens. Servo travel will be highlighted. Rotate
the roller until Speed appears in the channel position then press to enter.
Highlight the channel then press the roller. Rotate the roller to access the channel
you wish to adjust. Press the roller to accept.
Highlight the Speed value at the bottom of the screen and press the roller to
access. With the Speed value highlighted rotate the roller to adjust the servo
speed for the selected channel. Press the roller to accept the value.
You can return to the
pressing the button on the transmitter once.
To return to the Main screen press the
transmitter twice or press and hold the Roller for more than
three seconds.
Dual Rates and exponentials are available on the aileron, elevator and rudder
channels. You can assign them to numerous switches including the flight mode
switch.
Dual Rate
Affects the overall travel which in turn affects control response
sensitivity equally throughout the range of that channel. Reducing
the dual rate reduces the maximum control rate as well as overall
sensitivity.
Affects the sensitivity around center but has no affect on the overall
travel. Positive Exponential reduces control sensitivity around neutral
for more precise control but does not affect the maximum control response.
Note: Positive and negative exponential values are available. A positive
expo value reduces control sensitivity around center. It does not affect
maximum travel and is recommended. Negative exponential values
increase sensitivity around neutral and is seldom used.
With the transmitter on and the main or telemetry screen displayed, press the
roller. The Function list will display.
Rotate the roller to highlight D/R and Expo then press to access.
Highlight the channel then press the roller to access. Rotate the roller to select the
aileron, elevator or rudder channel. Press to accept.
screen at anytime by
button on the
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