JR X9303 User manual

X9303 2.4 Helicopter – Heli Mode
Heli PROGRAMMING - PLEASE READ
HELI - GETTING STARTED – SYSTEM MENU BASICS
H-1
INTRODUCTION
The Heli mode of the X9303 2.4 system is intended for
use in model helicopters with all types of Swashplate
mixing. It contains a host of advanced features that are
easy to set up and use. The features have been designed
to assist the pilot in realizing the full potential of the
helicopter. These features include:
• Switch Assignments for Specific Channels/
Functions
• Flight Modes (up to 6)
• Dual Rates/Exponential (up to 3 settings each for
Aileron, Elevator and Rudder)
• Swashplate Type (Normal, 120, 140, and
90 CCPM)
• Adjustable Trim Rates (10 – 100 Trim Steps)
• Built-In Cyclic-to-Throttle Mixing for Aileron,
Elevator, and Rudder
• Governor Pre-Program Mix
• Throttle Curves (up to 5) with up to 7 Points
• Pitch Curves (up to 6) with up to 7 Points
• Gyro System (In Flight Gain Selection of
up to 3 Gains)
• 6 Programmable Mixes (Includes 2 Multi-Point and
4 Standard Mixes)
• Fail-Safe (Hold or Predetermined Positions)
•Trainer System (Selectable Channels for
Student Control)
• Timers (Stopwatch, Count-Down, Integrated)
• Servo Monitor (Automatically Renames Channels
According to Assignments)
In addition to the numerous features listed above, the
X9303 2.4 provides the ability to combine, activate, and
deactivate multiple features such as Dual Rates,Gyro Gain,
and Governor settings, using the Flight Mode switch.
This capability dramatically reduces the pilot’s workload,
allowing the pilot to focus on the task of flying.
Those who are comfortable with programming are still
encouraged to continue reading this part of the manual in
order to acquire an understanding of the basic X9303 2.4
programming philosophy, functions, and techniques.
This section of the manual begins with entering the
System Menu, selecting a model and activating the HELI
Mode, and progresses through the remainder of the
System Menu options and then through the individual
functions. The descriptions here are general in nature and
serve not only to identify the functions that are available,
but why the functions are included in the HELI Mode and
when a particular function should be used.
Those who have some experience with computer radios
will probably be able to program their helicopter as
they read through this section, owing to the fact that the
individual functions are generally simple in nature and the
X9303 2.4 is a very intuitive system.
Getting started begins with accessing the SYSTEM Menu.
This is where models are selected, the mode is identified,
modulation type is indicated, and where other high-level
information is stored for the model. It is also used to activate
some of the more advanced programming features such as
Swashplate Types and Governor Program activation.

ACCESS THE SYSTEM MENU
Model SEL- Model Selection
H-2
The first thing to do when setting up a new model is to
select the model to be used. It is best to select an unused
model number, however, a model that already contains
data for another model may be used so long as data
for that model is no longer required. If the model type
is changed before deciding the model to be used, any
programming in this particular model will be lost.
1. Bring up the SYSTEM Menu by holding down the
ENT button while turning the transmitter on.
1. In the SYSTEM Menu, highlight and select Model
SEL using the Selector.
2. Use the Selector to highlight and select the desired
model number to be used.
3. Return to the SYSTEM Menu by pressing the
LIST button.
INFO-DISP
Model SEL
MDL Name
Type SEL
MDL Reset
TRANSFER
TRIM STEP
Devic. SEL
SWASH TYP
[SYSTEM M.]
Select 1 GLID
2 ACRO
MODEL 3 MODEL 3 HELI
4 ACRO
5 GLID
[Model SEL]

Copy – Copying the Currently Selected Model to Another Model Memory
H-3
The Copy function is part of the Model SEL function
and allows the contents of the current model memory
to be copied into another model memory in the same
transmitter. It is not used to transfer the model to another
transmitter or to a Data Safe unit – the DATA TRANSFER
function provides for these activities.
The Copy function is valuable because it can provide
some insurance against losing programs (helicopter
setups) that may have been very time-consuming to
create. It is strongly recommended that the Copy function
be used to make a backup copy of the model memory
for safe keeping after programming for a model has been
completed, tested and refined.
Making a backup copy of the model memory protects
against losing the original program and also allows one
to experiment with the original program, knowing that the
original settings can be restored by copying the backup
copy back to the original model memory.
1. The model to be copied must be currently selected
– see Model SEL description at the beginning of the
HELI section.
2. Highlight and select Model SEL in the SYSTEM Menu.
Highlight and select Select to obtain the Copy display.
The display shows the currently selected model on top
with a down arrow pointing to the lower model memory
that the current model will be copied into. The data that
is presently in the lower model memory will be entirely
replaced by the data in the currently selected model, so be
sure that the lower model is either empty or contains data
that is no longer required.
Copy
[Model SEL]
MODEL 3 HELI
MODEL 4 HELI
COPY
Copy
[Model SEL]
MODEL 3 HELI
MODEL 4 HELI
COPY

Copy (continued)
H-4
3. Verify that the top model is the model that is to be
backed-up and the lower model is empty or contains
a model that is no longer required. When satisfied
that all is well, press the CLR button on the left side
of the display next to COPY. The entire contents of the
currently selected model are copied to the lower model
on the display and there is now a complete backup of
the current model. The upper and lower model memory
names are now the same because they are now
identical in every regard.
The backup copy can now be used to restore the original at
any time by performing the Copy function and reversing the
order of models where the backup is copied into the original.
Note: As the X9303 2.4 has the ModelMatch feature,
in order to operate the receiver on a new model
number, you must first re-bind the receiver to the
new model in order for it to function.
To change the lower model memory that is to receive the
copy of the current model, highlight and select the lower
model name and number. Then scroll to an unused model
memory or a memory that contains data that is no longer
required, and select it.
Copy
[Model SEL]
MODEL 3 HELI
MODEL 3 HELI SPCM
MODEL 2 ACRO
MODEL 4 HELI
MODEL 5 ACRO

Data Reset – RESET THE MODEL
H-5
When setting up a new model it is important to reset
all parameters to their default or factory settings before
proceeding with any other programming. This is to ensure
that there are no program mixes, trims or other surprises
left over from a previous model or programming session.
If you are setting up a model for the first time, you can
skip this step and move to the TYPE SELECT function.
1. In the SYSTEM Menu, highlight and select MDL
Reset using the Selector.
2. Press the CLR button that is next to RES
on the display.
3. Press the lowermost button next to YES on the display
to reset all data for this model.
4. Return to the SYSTEM Menu by pressing the
LIST button.
[MDL Reset]
LST
NO
YES
MODEL 3 HELI
Are you sure? Y/N

Type Select – TO ACTIVATE THE HELI MODE
MDL Name-ENTER A NAME FOR THE MODEL
H-6
1. In the SYSTEM Menu, highlight and select Type
SEL using the Selector.
2. Highlight and select HELI using the Selector.
Each model should be given a name to make it easy
to identify in the model number list and to identify the
current model on the main display screen. The model
name appears in the upper right-hand corner of the main
screen when the transmitter is switched on.
3. Return to the SYSTEM Menu by pressing the
LIST button.
1. In the SYSTEM Menu, highlight and select MDL
Name using the Selector.
2. Highlight and select the desired characters to form the
model name.
After having selected and reset the desired model number
to be programmed, it is time to tell the transmitter that the
Heli Mode is to be used for this helicopter.
3. Return to the SYSTEM Menu by pressing the
LIST button.
[Type SEL] MODEL 3 HELI
GLID ACRO HELI
MODEL 3 HELI <VIBE 50>
[MDL Name]

TRANSFER A MODEL FROM THE X9303 2.4 – (Transfer function) – To Send
TRANSFER – TRANSFER THE MODEL TO ANOTHER TRANSMITTER OR TO DATASAFE
H-7
1. Hold the ENT button while plugging the trainer
cord into the back of the transmitter to obtain the
SYSTEM Menu. Plug the other end of the trainer
cord into another X9303 2.4 or XP9303 transmitter
while holding the ENT button down and prepare that
transmitter for Receive as described below. Or, plug the
other end of the trainer cord into a DataSafe unit and
prepare the DataSafe for Receive.
2. Highlight and select TRANSFER in the SYSTEM Menu
to obtain the Transfer display.
3. The model to be transferred must be the currently
selected model. If the model to be transferred is not
currently selected, see Model SEL in the SYSTEM
Menu to select the model to be transferred to another
X9303 2.4, XP9303 or DataSafe unit.
The TRANSFER function can be found in the SYSTEM
Menu and is used to copy the contents of a model
memory to another X9303 2.4, XP9303 transmitter or
to a DataSafe device on a Personal Computer (PC). It is
also used to receive data for a model, either from another
X9303 2.4, XP9303 transmitter or from a DataSafe unit.
4. When the receiving device is ready, press the CLR
button next to START on the left side of the display.
The data for the currently selected model is transferred
to the receiving device.
[TRANSFER]
TRANSMIT
MODEL 3 HELI
Connect DSC & POWER off

TRANSFER A MODEL TO THE X9303 2.4 – (Transfer function) – To Receive
H-8
1. Hold the ENT button while plugging the trainer cord
into the back of the transmitter to obtain the SYSTEM
Menu. Plug the other end of the trainer cord into
another X9303 2.4 or XP9303 transmitter while
holding the ENT button and prepare that transmitter
for Transmit as described above. Or, plug the other end
of the trainer cord into a DataSafe unit and prepare the
DataSafe for Transmit.
2. Highlight and select TRANSFER in the SYSTEM Menu
to obtain the Transfer display.
3. If RECEIVE is already displayed, continue with the next
step. If TRANSMIT is displayed, highlight and select
TRANSMIT, changing it to RECEIVE.
4. Select the model memory that is to receive the data by
highlighting and selecting the model name/memory
number and then scrolling to and selecting the model
memory that is to receive the data. Be careful to select
an unused model memory or a memory that contains
data for a model that is no longer needed because the
data in this model memory is going to be replaced by
what is transmitted and will be permanently lost.
Note: The receiving model name/memory number
can not be the currently selected model. If you wish to
receive a model in the currently selected model name/
memory number, go to the model select function and
select a different model, then re-enter the transfer
function and follow the instructions above.
5. Press the CLR button next to START on the left side
of the display. Stand-by appears at the bottom of
the display indicating that the X9303 2.4 is ready to
receive data. Press start on the transmitting X9303 2.4,
XP9303 or DataSafe unit to begin the data transfer to
the X9303 2.4.
[TRANSFER]
RECEIVE
MODEL 4 HELI
MODEL 3
Connect DSC & POWER off

TRIM STEP
H-9
The Trim Step function provides for adjusting the
sensitivity of the X9303 2.4 trim levers and switches. It is
useful during and after initial trimming of the helicopter
in order to trim the helicopter quickly at first, and then
to make very precise adjustments to helicopter trim. The
digital trims may have a setting of 0–10 with 10 being the
coarsest adjustment. When the value is set to 10, there are
only 10 trim increments from center to each end. When
set to 5, there are 20 trim increments from center to each
end. When set to 4, there are 25 increments. When set to
3, there are 34 increments, and when set to 1, there are
100 trim increments! When set to 0 the trim levers cease
to function and can no longer be used to change the trim
of the helicopter.
When adjusting the digital trims (AILE, ELEV, RUDD,
HOVT, HOVP), the total trim travel does not change – only
the number of increments (beeps) changes, which makes
for finer or coarser trim movements. When adjusting
the analog throttle trim, however, the total trim travel is
actually reduced when set to less than 100%.
Use a fairly coarse setting, such as the factory default 4,
when test flying the helicopter in order to be able to trim
it quickly, and then use a finer setting, such as 3–1, for
final precision trimming. The exception to this would be
for Rudder. Since most Gyros amplify the servo’s travel
and sensitivity, a trim value of 1 or 2 for the Rudder trim
usually achieves the best results.
1. Highlight and select TRIM STEP in the SYSTEM Menu
to acquire the TRIM STEP display.
2. Highlight and select the trim that is to be changed and
use the Selector to set a value of 1–10
(1 = finest, 10 = coarsest).
3. Repeat for other trims as desired.
[TRIM STEP]
THRO 100%
AILE 4
ELEV 4
RUDD 4
HOVT 4
HOVP 4

HELI - SYSTEM MENU - ADVANCED FUNCTIONS
ADDITIONAL FLIGHT MODES 3 and 4
H-10
There are two functions in the SYSTEM Menu that
control some of the more advanced features of the X9303
2.4 system. They are the Devic. SEL and
Swash Type functions.
The Devic. SEL function is used to activate and deactivate
2 additional Flight Modes; change switch assignments
from the system defaults; activate and deactivate switches/
channels and to activate/deactivate the Hover Throttle,
and Hover Pitch levers, and to Activate/Deactivate the
Governor function.
The Swash Type function is used to indicate the
Swashplate type (Normal (1 Servo), CCPM 180, 120, 140,
and both 3 and 4 servo 90).
Each of the options in these two functions is described
below to the extent necessary to determine if they should
be used for the helicopter being programmed.
The X9303 2.4 is capable of offering the pilot up to 6
separate flight modes. The X9303 2.4 is factory preset to
offer the pilot 4 separate Flight Modes (N, 1, 2, H). There
are 2 additional flight modes, numbered 3 and 4, that can
be activated through the Device Select function.
If the additional flight modes are desired, please follow
the activation procedure below.
To Activate 2 Additional Flight Modes
(Flight Modes 3 and 4)
1. From the SYSTEM Menu highlight and select Devic.
SEL by using the Rolling Selector.
2. Highlight and select F.MOD Extra using the Rolling
Selector. When selected, five options appear: AIL D/
R, ELE D/R, RUD D/R, HOLD SW, and GEAR SW.
Highlight and select the switch that is to be used to
access Flight Modes while flying. The example below
shows that the GEAR switch has been selected.
Once Flight Modes have been activated, two additional
sets of Throttle and Pitch curves numbered 3 and 4 will
appear in the Function Mode.
RUD TRIM:COM
GEAR AUX2 AUX3 AUX4
GEAR AUX2 AUX3 FMOD
SW SW LEV SW
OUT: ACT ACT ACT ACT
[Devic. SEL]
F.MOD THRO Pit.
EXTRA HOLD TRIM
INH HOLD PitT
SW LEV
RUD TRIM:COM
GEAR AUX2 AUX3 AUX4
GEAR AUX2 AUX3 FMOD
SW SW LEV SW
OUT: ACT ACT ACT ACT
[Devic. SEL]
F.MOD THRO Pit.
EXTRA HOLD TRIM
INH HOLD PitT
SW LEV
INH RUD D/R
AIL D/R HOLD SW
ELE D/R GEAR SW

RUD TRIM: COM – (Flight Mode Trim Options)
SWITCH ASSIGNMENTS
H-11
The Rud Trim function is designed to allow the pilot to
choose between 1 set of trim settings for the Rudder
channel only in all flight modes (COM) or a separate set
of trim settings for each of the flight modes (FM).
The RUD TRIM: COM parameter can be toggled back
and forth between COM and FM by pressing the Rolling
Selector when COM or FM is highlighted. If left in
the COM mode, the digital trim for rudder is Common
or shared by the 3 Flight Modes. If FM is selected, the
X9303 2.4 keeps track of the digital trims independently
for each Flight Mode, which means the pilot can re-trim
the rudder using the digital trims for each Flight Mode.
To change one or more switch assignments:
1. From within the Devic.SEL function, use the
Selector to highlight and select THRO HOLD, PIT
Trim, GEAR, AUX2, AUX3, or AUX4 along the top
line of the display.
2. Once a switch is selected, a list of available
replacement switches is displayed. Highlight and select
the desired switch with the Selector.
The X9303 2.4 provides the ability to change the
standard default switch assignments for THRO Hold,
PIT Trim, GEAR, AUX2, AUX3, and AUX4. Changing the
assignments may be a matter of preference or to help
overcome a disability in one hand. In any event, the
standard switch assignments may be changed in Devic.
SEL function contained in the SYSTEM Menu.
3. Repeat for as many switches as desired.
[Devic. SEL]
F.MOD THRO Pit.
EXTRA HOLD TRIM
INH HOLD PitT
SW LEV
RUD TRIM:FM OUT: ACT ACT ACT ACT
GEAR AUX2 AUX3 FMOD
SW SW LEV SW
GEAR AUX2 AUX3 AUX4
RUD TRIM:COM
GEAR AUX2 AUX3 AUX4
GEAR AUX2 AUX3 FMOD
SW SW LEV SW
OUT: ACT ACT ACT ACT
[Devic. SEL]
F.MOD THRO Pit.
EXTRA HOLD TRIM
INH HOLD PitT
SW LEV
AIL D/R HOLD SW
ELE D/R GEAR SW
RUD D/R

ACTIVATE/DEACTIVATE SWITCHES
GOVERNOR PROGRAM ACTIVATION
H-12
The X9303 2.4 provides the ability to disable a number of
the switches on the transmitter – Pit TRIM, GEAR, AUX2,
AUX3, and AUX4. This is very useful when auxiliary
channels are used for special or mixing purposes. In
this instance, the auxiliary channels are no longer to be
operated by their auxiliary switches but rather the program
mix selected or transmitter sticks.
1. If PIT TRIM, GEAR, AUX2, AUX3, or AUX4 are to be
used as a 2nd primary flight control, then inhibit the
corresponding switch by highlighting ACT, along the
bottom line of the display and pressing the Selector
until INH appears under the switches that are to be
turned-off. The example below shows all switches as
INH or being turned-off, making them all available to
be used as a 2nd channel for a primary flight control.
The X9303 2.4 features a special Governor program that
can be activated in the Device Select screen.
The Governor program is designed to be used with
most currently available Governor systems, and
allows for independent rpm settings for each of the
active flight modes.
1. From within the Devic.SEL function use the Selector
to highlight and select OUT:ACT located at the bottom of
the GEAR column along the bottom line of the display.
2. Press the Selector until the word GOV appears on
the display. This indicates that the Governor function
has been activated. The Governor program will now be
visible in the Function Mode List.
[Devic. SEL]
F.MOD THRO Pit.
EXTRA HOLD TRIM
INH HOLD PitT
SW LEV
OUT: INH INH INH INH
GEAR AUX2 AUX3 AUX4
GEAR AUX2 AUX3 FMOD
SW SW LEV SW
RUD TRIM:COM
[Devic. SEL]
F.MOD THRO Pit.
EXTRA HOLD TRIM
INH HOLD PitT
SW LEV
RUD TRIM:COM
GEAR AUX2 AUX3 AUX4
GEAR AUX2 AUX3 FMOD
SW SW LEV SW
OUT: GOV INH INH INH

SWASH TYP-SWASHPLATE TYPE
Accessing the Swashplate Type Function
H-13
1. While pressing the ENT key, switch the transmitter to
the ON position to enter the system mode.
2. Roll the Rolling Selector until SWASH TYP
is highlighted, then press the Selector
to access.
3. Press the Rolling Selector again, and the screen
will display the available swashplate types. Move the
Selector to highlight the desired swashplate type, and
then press the Selector to select.
4. Pressing the CLR key will reset the Swashplate Type to
the factory default (Normal) position.
5. To exit the Swashplate Type function, roll the Rolling
Selector to highlight LIST, and press.
This concludes the SYSTEM Menu portion of the Heli
Mode. Continue with FUNCTION LIST below to complete
the Heli setup.
The Swashplate Mixing function enables the X9303 2.4
system to operate many different types of swashplate
control systems, including 5 different versions of CCPM.
The Swashplate options are:
1 Servo Non-CCPM, standard mixing type
2 Servo/180° CCPM
3 Servo/120° CCPM (JR style, most popular)
3 Servo/140° CCPM (JR Vigor CS, JR Vibe 90)
3 Servo/90° CCPM
4 Servo/90° CCPM
[SWASH TYPE]
3servos
140
6ch 2ch
3ch

HELI – FUNCTION LIST
D/R & EXP – DUAL RATE AND EXPONENTIAL
FUNCTION MODE
H-14
Once the basic helicopter configuration has been
defined in the SYSTEM Menu, the functions found in the
FUNCTION LIST are used to complete the setup and then
to adjust how the helicopter flies and how it is controlled.
The functions are presented below in the order that they
appear in the Function List.
The descriptions are general in nature and are intended to
provide enough information to decide whether or not to
use a function, and what types of selections and settings
to make.
Press the LIST button after the transmitter is powered-up
to obtain the FUNCTION LIST.
Dual Rates and Exponential curves can be very effective
in setting up a helicopter to have a particular “feel” when
performing different types of maneuvers. Just changing
D/R and EXPO values can change the helicopter’s
personality, causing the helicopter to take on traits that
make certain maneuvers easier for the pilot. At times we
may want the helicopter to feel very crisp, such as when
performing aerobatics, and then feel softer for other
maneuvers such as Hovering, and yet other times when
we would like the helicopter to be very crisp but without
the tendency to be over-controlled, like in performing 3D
maneuvers. Dual Rates and Exponential curves can be
combined to produce these traits. When programming a
Dual Rate and Exponential curve, think about what kind of
response is desired from the helicopter.
1. Highlight and select D/R & EXP in the FUNC.LIST
to obtain the D/R & EXP display. There will be 3 sets of
values displayed for each channel – Aileron, Elevator
and Rudder.
2. Use the Selector to change between Aileron,
Elevator and Rudder. Then use it to set dual rate and
exponential values. If exponential has never been used
before, try a low positive value like +20. After a while,
increase it gradually until the desired feel is obtained.
Use only positive (+) percentages unless there is a
distinct need to increase control sensitivity.
D/R EXP
100% LIN
100% LIN
100% LIN
100% LIN
100% LIN
100% LIN
[D/R & EXP]◊0
POS-0
POS-1
POS-2
AILE
AUTO
NORM:INH
ST-1:INH
ST-2:INH
HOLD:INH
D/R EXP
100% LIN
100% LIN
100% LIN
100% LIN
100% LIN
100% LIN
[D/R & EXP]◊0
POS-0
POS-1
POS-2
AILE
OUTPUT
Extended Screen

REV.SW - SERVO REVERSING
Auto Dual Rate
H-15
Once all servos have been plugged into their proper
channels in the receiver, the first thing to check is the
direction of travel of each servo. Move all sticks and
switches/levers while observing each servo to determine
if the servos are moving in the correct directions. Make
note of those servos that are not traveling in the correct
direction and use the REV.SW function to reverse the
direction of travel for these servos.
1. Highlight and select REV.SW in the FUNC.LIST to
obtain the servo reversing display.
2. Use the Selector to highlight and select those
channels that need to be reversed. Pressing the
Selector toggles the channel between Normal
and Reverse.
Note: If any of the versions of CCPM have been
selected, the 3 CCPM channels will be re-named to
CH2, CH3, and CH6, etc. on the display.
The Automatic Dual Rate function allows you the
opportunity to change the dual rate and expo values of the
elevator, aileron, and rudder by changing the flight mode
or throttle hold switch positions.
This feature simplifies the operation of multiple switches
during flight.
To access the Auto D/R feature, simply roll the selector to
the right until the D/R Expo graph is replaced by the Auto
D/R Flight Mode list.
Highlight the Flight Mode to be set for Auto D/R, then
press the selector to pick the desired D/R setting to be
used for this flight mode. Repeat as necessary to assign
D/R positions for each flight mode.
[REV SW.]
THR AIL ELE RUD GER PIT AX2 AX3 AX4
REV.
NORM
[REV SW.]
THR CH2 CH3 RUD GER CH6 --- AX3 AX4
REV.
NORM

Sub Trim
H-16
Sub Trims are intended for relatively minor adjustments
to servo linkages and not for major trim adjustments to
the helicopter. Using excessive sub trim percentages can
cause a loss in servo travel in one direction where the
servo reaches its travel limit and stops moving before the
control stick is fully deflected.
Use Sub Trims to fine-tune the alignment of servo arms.
Install servo arms on the servos so that the arms are at
90˚ or perpendicular to the servo case/linkage. As JR
servos feature an odd number of splines on the output
shaft, you can rotate and reinstall the arms to try and
obtain a better position for the servo arm that will require
a lesser amount of sub trim. Now use the Sub Trim
function to fine-tune the servo arms that are not quite at
90˚ to the servo.
1. Highlight and select Sub Trim in the FUNC.LIST to
obtain the Sub Trim Display.
Note: If a form of CCPM has been selected, channel
naming will vary.
2. Highlight and select the channels where the servo arms
are not quite at the desired position. Once a channel is
selected, rotate the Selector until the servo arm is at
90˚ to the servo case.
[Sub Trim]
THRO 0 GEAR 0
AILE 0 PIT. 0
ELEV 0 AUX2 0
RUDD 0 AUX3 0
AUX4 0

TRVL ADJ. – TRAVEL ADJUST
H-17
Travel Adjust is used to adjust how far a servo travels in
each direction. After the linkages have been installed and
attached to the servos, adjust the amount of servo travel
in each direction.
1. Highlight and select TRVL ADJ. in the FUNC.LIST
to obtain the Travel Adjust display.
2. Use the Selector to highlight and select each channel
and adjust the travel in each direction by rotating the
Selector. The direction of travel is changed by moving
the stick/switch/lever back and forth.
Note: If a form of CCPM has been selected, channel
naming will vary.
[TRVL ADJ.]
THRO H100% L100% GEAR
AILE L100% R100% PIT.
ELEV D100% U100% AUX2
RUDD L100% R100% AUX3
AUX4
+100% -100%
H100% L100%
+100% -100%
+100% -100%
+100% -100%

Swash Mix- CCPM SWASHPLATE Mixing
H-18
1) Normal (Standard Mechanical Mixing)
This form of Swashplate Mixing uses each of the three
servos to move the swashplate individually for pitch,
Aileron, and Elevator changes. If one servo (NORM)
is selected in the System Mode (Factory Default), the
Swashplate Type function will not appear on the LCD
screen in this section.
2) 2-servo 180 degrees
2 servos are used to move the swashplate, and
are spaced at 180 degrees apart. This is not a very
common control system configuration.
3) 3-servo 120 degrees
3 servos are used to move the swashplate, and are spaced
at 120 degrees apart. This is the most common form of
CCPM, and is found in JR and other brands of helicopters.
4) 3-servo 140 degrees
3 servos are used to move the swashplate, and
are spaced at 140 degrees apart. This is a special
JR developed form of CCPM, and is found in
JR Vibe helicopters.
5) 3-servo 90 degrees
3 servos are used to move the swashplate, and are
spaced at 90 degrees apart. This is also not a very
common control system configuration.
6) 4-servo 90 degrees
4 servos are used to move the swashplate, and are
spaced at 90 degrees apart. This is a very common
control system configuration, used predominantly for
Scale models like Vario, Graupner, etc.
This section is for those that have activated CCPM
Swashplate mixing. If CCPM Mixing has not been
activated, skip to Throttle Hold/ThrottleCurves)
Note: The CCPM Swashplate Mixing screen is only
displayed when Swashplate types 2s 180, 3s 120, 3s
140, 3s 90 or 4s 90 are selected in the Swashplate
type Selection in System Mode.
The CCPM Swashplate Mixing function (Cyclic Collective
Pitch Mixing) of the X9303 2.4 is designed to allow the
X9303 2.4 to be used in model helicopters that utilize
2-servo (180°), 3-servo (120°), 3-servo (90°) type and
4-servo (90°) swashplate control systems.
The desired swashplate mixing type must first be selected
at the Swash Type Selection in System Mode.
Variations of CCPM Mixing
2-servo (180°)
Ch 2&6 Aileron Ch 3 Elevator Ch 6 Pitch
3-servo (90°)
Ch 2&6 Aileron Ch 3 Elevator Ch 2,3&6 Pitch
3-servo(120°)
Ch 2&6 Aileron Ch 2,3&6 Elevator Ch 2,3&6 Pitch
CCPM Servo Connection/Channel Numbers
3-servo (140˚)
Ch 2&6 Aileron Ch 2, 3&6 Elevator Ch 2,3&6 Pitch
4-servo (90˚)
Ch 2&6 Aileron Ch 3&8 Elevator Ch 2,3,6&8 Pitch
[Swash Mix]
3servos
140o
AILE 60%
ELEV 60%
PIT. 60%
EXP INH

CCPM Exponential (EXP)
H-19
The purpose of this exponential is to remove the non-
linear, or rough movement of the swashplate due to the
mechanical differential of the servo horn.
This will be a help to change circular movement of servo
horn to linear movement. The Exponential function can be
turned on and off by highlighting the EXP function with
the Rolling Selector, then pressing the Rolling Selector to
select INH (Off) or ACT (On). Note: it is recommended that
EXP be activated in most cases.
Accessing the Swashplate Mixing Function
1. Place the transmitter power switch in the ON position.
2. Access the Function Mode by pressing the LIST key.
3. Move the Rolling Selector and highlight Swash
Mix. Press the Rolling Selector to access.
4. Move the Rolling Selector until the desired channel
to be adjusted is highlighted.
5. Press the Rolling Selector, then rotate left and right to
increase/decrease the CCPM Travel values as needed.
6. Follow the same procedure for the remaining channels.
7. To exit the Swashplate Type function, move the Rolling
Selector to highlight LIST, then press.
[Swash Mix]
3servos
140o
AILE 60%
ELEV 60%
PIT. 60%
EXP ACT

THRO HOLD- THROTTLE HOLD
H-20
The Throttle Hold function is designed to hold the
throttle servo in a specific position during an autorotation.
This is very useful for practicing autorotation landings.
The Throttle Hold switch is located on the top right-rear
corner of the transmitter (unless a different switch has
been selected in the Device Sel section in the System
Mode. In the forward position, Throttle Hold is on; in the
rear position Throttle Hold is off.
The proper Throttle Hold value should deliver the proper
engine idle rpm for your helicopter. The adjustable
range is (-20% – +50%). Once you establish the proper
idle trim value for your engine, you can use this value
for Throttle Hold as well. To shut the engine off for
autorotation, a negative or zero value should be input.
Accessing the Throttle Hold Function
1. Place the transmitter switch in the ON position.
2. Press the List key, then move the Selector until THRO
HOLD is displayed. Press the Selector to access.
3. Pressing the Selector will activate (ACT) or inhibit
(INH) the Throttle Hold function.
4. Once the Throttle Hold function is activated, the screen
will display the current Throttle Hold value.
5. Move the Selector to highlight HOLD Pos, then
press. Roll the Selector to increase or decrease the
Throttle Hold value to the desired position.
6. To exit the Throttle Hold function, move the Selector
to highlight LIST, then press.
Note: When the Throttle Hold is activated, and the
switch is on, the ‘’HLD“ indication on the LCD will be
displayed just under the battery voltage bar.
[THRO Hold]
ACT
HOLD SW
HOLD Pos.
+14%
STICK AUTO
INH
HOLD DELAY
INH