Gyro; Governor; Tail Curve; Heli Mixing - Spektrum DX18 Instruction Manual

EN

Gyro

The Gyro menu option enables you to assign a gyro gain value
to an independent switch or a Flight Mode. Assign the receiver
channel connected to the gyro, then assign the switch for
gyro options. You can also assign values to available switch
positions (from 1 to 5 rates are available, depending on the
switch assigned). Make sure the gyro operates correctly and
compensates in the correct direction.

Governor

The Governor function adjusts the engine RPM. You can program
values for each switch position or fl ight mode. RPM values can
be programmed in 0.5% steps.
Programming the Governor Function
1. Access the Governor menu option.
2. Program the RPM values by rotating the scroll wheel to the
desired value.
3. Press the scroll wheel and rotate it to the desired value.
Press the scroll wheel again to save the value.
NOTICE: The value in the display is the corrected value.
0% is 1.5ms or OFF for most governors. Repeat this for all
governor settings.

Tail Curve

The Tail Curve function mixes tail rotor input with the throttle/
collective function to counter torque from the main rotor blades
when using a non-heading hold (tail lock) gyro or when using
rate mode on a gyro. See Pitch Curve for more information on
programming curves.
Mixing
Cyclic to Throttle
Cyclic-to-throttle mix prevents rpm loss when aileron, elevator or
rudder inputs are given. This mix advances the throttle position
with cyclic or rudder control to maintain rpm. At full throttle,
Cyclic-to-Throttle mixing prevents the throttle from overdriving
the servo.
IMPORTANT: Do not use Cyclic to throttle mix when using a
governor.
To verify that the Cyclic to Throttle mix is working properly and in
the correct direction, move the fl ight mode switch to one of the
active positions. Move the programmed cyclic or rudder channel
noting the throttle position. The throttle position should increase.
If the throttle decreases then the opposite value (positive vs.
negative) is needed.
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4. Assign the output channel for the Governor. The Governor
and the Gyro must be on different channels. We recommend
using AUX2 for the Governor output channel.
5. Select a switch to control the Governor.
6. Press the BACK button to save the selections and return to
the Function List.
Swashplate
The Swashplate Mix typically corrects swashplate timing issues
by mixing Aileron to Elevator and Elevator to Aileron. When
adjusted correctly, the Swashplate causes the helicopter to roll
and pitch accurately with minimal interaction.
SPEKTRUM DX18 • TRANSMITTER INSTRUCTION MANUAL