Lemon RX Stabilizer PLUS Receiver – Essential Instructions v.1.5
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The Stabilizer PLUS performs best, especially in Autolevel mode, when trim and subtrim settings are kept to
a minimum. Where possible, use mechanical adjustments to eliminate the need for large trim offsets, then
reset the stick neutrals as described above.
Calibration of the Sensors (no action normally needed)
Calibration of the sensors is a totally separate process from resetting stabilizer level or stick neutrals.
Calibration is seldom needed; when it is, the indication is a jump in servo position on one or more axes
when the Stab is switched back and forth between OFF and Gyro (with no movement of the Stab).
The StabPLUS attempts to calibrate its sensors automatically every time it is powered up, provided the
stabilizer remains absolutely stationary, with no vibration, for 2 or 3 seconds at the beginning of the
process. No special effort is needed to enable this, unless signs of calibration error are seen.
Special Options
Stabilizer Always-ON (requires Rebind)
By default, channel 5 (Gear) is dedicated to controlling Stabilizer mode (OFF, Gyro, Autolevel), so its pins are
not generally usable for other functions. The Stabilizer Always-ON function, however, allows channel 5 to be
used to control landing gear or for other functions. Because Always-ON cannot be changed or canceled in
flight, it should normally be used only with Gyro mode. To verify the setup, it is a very good idea to fly your
model at least once with an off switch available before setting Always-ON (if you have an eight or more
channel transmitter, you can use Master Gain as an OFF control).
To enable Stabilizer Always-ON:
1. With receiver and transmitter powered down, insert a bind plug into Bind/channel 7.
2. Power up the receiver. Indicator 2 lights (Red/Green) should be flashing rapidly to signal Bind Mode.
3. Turn on the transmitter in Bind Mode (see instructions for your transmitter).
4. Wait for Indicator 1 (Green/Blue) to stop flashing and Indicator 2 (Red/Green) to show stabilizer mode.
This may take 20 seconds or more. Be patient.
5. Set the channel 5 (Gear) switch on the transmitter to Gyro mode (Green ON, Red OFF). Autolevel mode
(Red/Green alternately flashing slowly) is not recommended for use in conjunction with Always-ON.
6. Press and hold the button (>1s) until the Indicator 1 Blue LED is ON, showing that Always-ON has been
selected. In this condition, channel 5 (Gear) no longer controls stabilizer mode and can be reassigned
for another purpose.
7. Power off and remove the bind plug.
The Always-ON setting will be retained even when the stabilizer is powered off.
Note that even with Always-ON active, the toggle gesture still works to reset level or stick neutrals.
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