XP9303 Helicopter Opening.indd

XP9303 Helicopter Opening.indd
INSTRUCTION MANUAL FOR HELICOPTER
XP9303
9-CHANNEL COMPUTER RADIO SYSTEM
Table of Contents
General Section
Section 1: Using this manual ....................G-8
Section 2: Features.....................................G-8
R770 Receiver.................................................... G-8
R770 (Basic Air and
Sailplane Systems) ......................................... G-8
R649 Receiver.................................................... G-8
R649 (Advanced Air, Basic
& Advanced Helicopter Systems) .............. G-8
Section 3: Component Specifications ....G-9
Servo Specifications .......................................... G-9
Transmitter Specifications ............................... G-9
Component Specifications .............................. G-9
Airborne Battery Pack Specifications..... G-10
Receiver Specifications .......................... G-10
Airborne Battery Pack........................... G-10
Charger Specifications ........................... G-10
Battery Charging ..................................... G-11
Transmitter/Receiver...................................... G-11
Transmitter Only......................................... G-11
Charger ......................................................... G-11
XP9303 Transmitter
Features (Front) ................................... G-12
G2
XP9303 Transmitter
Features (Rear) .................................... G-13
Battery Cover .............................................. G-13
XP9303 Transmitter Features
(Internal) ................................................ G-14
Control Stick Tension Adjustment.............. G-14
Advanced Digital Trims .................................. G-15
Control Stick Length ...................................... G-15
Direct Servo Control (DSC) ........................ G-16
Why you should use the
DSC function:............................................... G-16
Neckstrap Attachment ................................... G-17
Base Loaded Antenna ..................................... G-17
Frequency Notes/Aircraft
Only Frequencies...................................... G-17
Aircraft-Only Frequencies ........................ G-17
Installation Requirements.............................. G-18
Flash Memory .................................................. G-18
Connections: .................................................... G-18
Battery Alarm and Display ............................ G-18
Table of Contents
Helicopter Section
HELI - Getting Started –
System Menu Basics ....................................H-1
Introduction ....................................................H-1
HELI Programming - Please Read ...................H-1
Access the System Menu..................................H-2
Model SEL- Model Selection............................H-2
Copy – Copying The Currently Selected
Model To Another Model Memory ..........H-3
Copy (continued) ...............................................H-4
Data Reset-Reset the Model ...........................H-5
Type Select-to Activate the HELI Mode ........H-6
MDL Name-Enter a Name
for the Model ...............................................H-6
MODULAT- Select a
Modulation Type...........................................H-7
TRANSFER – Transfer the Model to Another
Transmitter or to DataSafe .......................H-8
Transfer a Model from the XP9303 –
(Transfer function) – To Send....................H-8
Transfer a Model to the XP9303 –
(Transfer function) – To Receive ..............H-9
Trim Step........................................................... H-10
HELI - System Menu Advanced Functions ................................. H-11
Additional Flight Modes 3 and 4 .................. H-11
RUD TRIM: COM –
(Flight Mode Trim Options).................... H-12
Switch Assignments ........................................ H-12
Activate/Deactivate Switches ....................... H-13
Governor Program Activation ..................... H-13
SWASH TYP-Swashplate Type ...................... H-14
Accessing the Swashplate Type Function ... H-14
Function Mode ........................................ H-15
HELI – Function List ....................................... H-15
D/R & EXP – Dual Rate
and Exponential ........................................ H-15
Auto Dual Rate................................................ H-16
REV.SW - Servo Reversing ............................ H-16
Sub Trim............................................................. H-17
TRVL ADJ. – Travel Adjust.............................. H-18
Swash Mix- CCPM Swashplate Mixing ....... H-19
Variations of CCPM Mixing ...................... H-19
CCPM Servo Connection/Channel
Numbers ....................................................... H-19
CCPM Exponential (EXP) ............................. H-20
Accessing the Swashplate Mixing
Function ........................................................ H-20
THRO HOLD- Throttle Hold ...................... H-21
Accessing the Throttle Hold Function ... H-21
Stick Auto- Auto Cut Setting ........................ H-22
Hold Delay ........................................................ H-22
THRO CURV – Throttle Curves ................. H-23
Accessing the Throttle Curve Function . H-24
Throttle Trim Lever Function ....................... H-25
Hovering Throttle Lever ................................ H-25
Throttle Curve Exponential ......................... H-26
Accessing the Throttle Curve
Exponential Function ................................. H-26
PIT. CURV- Pitch Curves Function .............. H-27
Accessing the Pitch Curve Function....... H-27
Hovering Pitch Lever...................................... H-28
Example of Throttle Curve and Pitch
Curve Settings ............................................. H-28
REVO.MIX- Revo Mix Function: Non Heading
Lock Gyros Only ...................................... H-29
Accessing the Revolution
Mixing Function ........................................... H-29
Setting Up Revolution Mixing................... H-29
GYRO SENS- Gyro Gain Function ............. H-30
Accessing the Gyro Gain Function ......... H-30
Flight Modes/ Recommended
Gyro Gain positions ................................... H-30
Gyro Remote Gain Connections:
JR G500T and Other.............................. H-31
Remote Gain Gyros ....................................... H-31
Mix-Thro- Cyclic-to-Throttle Mixing ......... H-31
Rudder-to-Throttle Mixing ........................... H-32
G3
Table of Contents
Helicopter Section (continued)
Aileron-to-Throttle and
Elevator-to-Throttle Mixing ................... H-33
Setting the Desired Flight Modes for
Cyclic-to-Throttle Mixing ......................... H-33
Accessing the Cyclic-to-Throttle
Function ........................................................ H-33
GOVERNOR- Governor Function ............. H-34
Accessing the Governor Function .......... H-34
PROG MIX 1-6 – Programmable
Mixes 1 through 6 .................................... H-35
Swashplate Timing Mixes Example:
Elevator-to-Aileron (Corrects vertical
tracking) ...................................................... H-37
Swashplate Timing Mixes (continued) ........ H-38
Swashplate Timing: Aileron-to-Elevator
(Corrects Rolling Maneuvers) ............... H-39
Standard Programmable Mixes –
Example: Right Aileron with
Positive Pitch ................................................ H-41
Information Section
Servo Precautions ................................................I-1
General notes .......................................................I-1
Federal Aviation Administration........................I-2
1. Purpose ..........................................................I-2
2. Background....................................................I-2
3. Operating Standards ...................................I-2
Daily Flight Checks ..........................................I-2
Frequency Chart ..................................................I-3
Warranty Information .........................................I-4
Warranty Coverage .........................................I-4
Repair Service Directions ..............................I-4
Warranty Repairs.............................................I-4
Normal Non-Warranty Repairs ...................I-4
Setup Sheet (Aircraft) .........................................I-5
Setup Sheet (Sailplane)........................................I-6
Setup Sheet (Helicopter)....................................I-7
G4
Multi-point Mixes –
Example: FMOD to Gear Mixing
(Retract and other Functions) ............... H-43
Fail Safe- PCM Fail Safe Function ................. H-46
Trainer – Programmable Trainer System ... H-47
XP9303 Used as Master (Instructor) –
(Trainer System) .......................................... H-47
XP9303 Used as Slave (Student) –
(Trainer System) .......................................... H-48
Timer – Timer System ................................... H-49
MONITOR- Servo Monitor.......................... H-50
Sub Trim Usage and
Mechanical Advantage ............................ H-51
Dual Rates and Exponential Curves....... H-52
Section 1: Using this manual
This Manual is divided into three specific sections:
Airplane, Sailplane and Helicopter. When writing this
manual we employed three distinctly different individuals
to write the sections that most pertained to their expertise.
The Aircraft section was written by a top notch aerobatic
pilot, the Sailplane section by a very experienced sailplane
competitor and the Helicopter Section by a member of
the 2003 USA F3C team. Each section may read and feel
slightly different because of the different personal styles
that each of these authors has used.
In this manual you will find the specifications for the radio
and its various components and accessories. In addition,
guidelines for the installation have been included.
Instructions for setting all the functions and programs are
presented in the three sections of the manual: Airplane,
Helicopter and Sailplane. These features are discussed
in the same order that they would normally be needed to
set up a typical aircraft, helicopter and 6 servo winged
sailplane respectively. An explanation of the use and
purpose of each feature is provided, followed by a labeled
illustration of its respective LCD display.
A blank data sheet has been included at the end of each
section. Once all data has been input for a particular
model, it is highly recommended that you record it on a
copy of the sheet provided.
Section 2: Features
The computer-designed, ergonomically-styled transmitter
case ensures a comfortable fit in your hands. You will also
be introduced to our exclusive “Rolling Selector” on the
face of the transmitter for fast and effortless movement
through any programming sequence. The ultra-precision
control sticks offer adjustable spring tensions and
length. The throttle stick offers a ratchet in Airplane/
Sailplane configuration. 30-model memory storage
allows programming of all parameters of thirty separate
airplanes, helicopters or sailplanes; you can program
more than one setup for a single aircraft, allowing you to
instantly change the flight characteristics.
R770 Receiver
R770 (Basic Air and Sailplane Systems)
The R770 is a high-performance PCM single-conversion
receiver with 10KHz super narrow band ABC&W circuitry.
A narrow band ceramic filter for high-signal selectivity
assists in rejecting cross modulations from other common
radio frequencies, such as RC transmitters or local paging
systems.
This receiver features Direct Servo Control (DSC) for
control of servos without radio frequency output.
The receiver has low current consumption.
The R770’s Slimline design allows it to fit into most
model applications.
R649 Receiver
R649 (Advanced Air, Basic & Advanced
Helicopter Systems)
This receiver features Direct Servo Control (DSC) for
control of servos without radio frequency output.
The R649 is a high-performance PCM single-conversion
receiver with 10KHz super narrow band ABC&W circuitry.
The receiver has low current consumption.
A narrow band ceramic filter for high-signal selectivity
assists in rejecting cross modulations from other common
radio frequencies, such as RC transmitters or local paging
systems.
The R649’s credit card size design allows it to fit into most
model applications.
G5
Section 3: Component Specifications
Servo Specifications
Type
DS811
DS8311
DS368
Torque
54 Oz/In
125 Oz/In
53 Oz/In
Speed
.18
.18
.21
Weight
1.44 Oz
1.87 Oz
0.80 Oz
Size (in) (L x W x H)
1.49x0.75x1.52
1.54x0.75x1.36
1.12x0.50x1.17
Ballbearing
Yes
Yes
No
Motor
Cored
Coreless
Cored
Transmitter Specifications
Type
Airplane
Helicopter
Sailplane
Model Number
NET-N339FS
NTE-N339HS
NET-N339GS
Encoder
9-channel computer system
RF Module
Plug-in Module
Plug-in Module
Plug-in Module
Modulation
PPM/SPCM
PPM/SPCM
PPM/SPCM
Output Power
Approximately 750mw
Current Drain
200ma
200ma
200ma
Power Source
1.2Vx8 Ni-Cd (9.6V) 600Mah
Output Pulse
1000-2000 (1500 neutral)
Component Specifications
Type
Airplane
Helicopter
Sailplane
System Name
X-9303A(basic/
X-9303H(basic)/
X-9303S
(advanced)
(advanced)
Transmitter Body
NET-N339FS
NTE-N339HS
NET-N339GS
Receiver
R770(basic)/R649(advanced
R649 PCM
R770 PCM
Charger
NEC-222
NEC-222
NEC-222
Airborne Battery
1100mah
1100mah
600mah
Servos
None(basic)/
4-DS811(basic)
3-DS368
4-DS811(advanced)
4-DS8311(adv)
Deluxe Switch
Deluxe Switch
Deluxe Switch
12” Ail Extension
12” Ail Extension
12” Ail Extension
Charge Jack
Charge Jack
Charge Jack
Servo Accessories
Servo Accessories
Servo Accessories
Hex Wrench
Hex Wrench
Hex Wrench
Instruction Manual
Instruction Manual
Instruction Manual
Accessories
G6
Receiver Specifications
Type
7 Channel SPCM
9 Channel SPCM
Model Number
R770
R649
Type
7-ch/SPCM-ABC&W/Micro
9-ch/SPCM-ABC&W
Frequency
72/75/50mhz
72/75/50mhz
Sensitivity(Microseconds)
5 uS Minimum
5 uS Minimum
Selectivity
8KHz/5 dB
8KHz/5 dB
Weight (oz)
.75 oz
1.5oz
Receiver Antenna
39” for all aircraft frequencies
39” for all aircraft frequencies
Charger Specifications
Type
Airplane
Helicopter
Sailplane
Model Number
NEC-222
NEC-222
NEC-222
Input Voltage
AC 100-120V
AC 100-120V
AC 100-120V
Output Current
65mAh Tx/150mAh Rx
Charging Time
15 Hours
15 Hours
15 Hours
Airborne Battery Pack
Airborne Battery Pack Specifications
Type
Airplane
Helicopter
Sailplane
Model Number
B1100
B1100
Extra 600
Voltage
4.8V
4.8V
4.8V
Size (in) (L x W x H)
2.24 x 0.63 x 1.70
2.24 x 0.63 x 1.70
2.64 x 1.18 x .70
Weight (oz)
4.9
4.9
2.7
G7
Battery Charging
Transmitter/Receiver
Note: It is imperative that you fully charge both the
transmitter and the receiver battery packs prior to
each trip to the field. To do so, leave the charger
and batteries hooked up overnight (16 hours). The
first charge should be approximately 20–24 hours
in order to fully charge both battery packs to peak
capacity.
The charger supplied with this system is designed
to recharge your batteries at a rate of 65mAh for the
transmitter and 150mAh for the receiver battery pack.
RIGHT SIDE OF TRANSMITTER
CENTER
PIN IS
NEGATIVE
Transmitter Only
The center pin on all JR® Remote Control Systems is
negative. Therefore, the center pin on all JR chargers is
negative, not positive. This is different from many other
manufacturers’ chargers and radio systems. Beware of
improper connections based on “color-coded” wire leads,
as they do not apply in this instance. You must make
sure that the center pin of your JR transmitter is always
connected to the negative voltage for correct polarity
hookup.
Important: Please note that the charging polarity of
the transmitter and receiver are different.
Charger
The pilot lamps should always be on during the charging
operation. If not, check to make sure that both the
transmitter and receiver are switched off.
Do not use the charger for equipment other than JR. The
charging plug polarity may not be the same. Equipment
damage can result.
Do not use other manufacturers’ after-market accessories
that plug into the transmitter’s charging jack if you are
unsure of compatibility issues with your radio. Seek
expert advice to avoid possible damage.
During the charging operation, the charger’s temperature
is slightly elevated. This is normal.
G8
OUTSIDE IS POSITIVE
CHARGER PIGTAIL FOR TRANSMITTER
BLACK TO POSITIVE
RED TO NEGATIVE
CHARGER PIGTAIL FOR RECEIVER
RED–POSITIVE / BROWN–NEGATIVE / ORANGE–SIGNAL
XP9303 Transmitter Features (Front)
Mix Switch
AUX2
Elevator
Dual Rate
Gear Switch
Trainer Button
Flap Trim
Aux Trim
Aileron
Dual Rate
AUX4/
Rudder Dual
Rate
Flap Switch
Lever
Lever
Throttle/
Rudder Stick
Elevator/
Aileron Stick
Throttle Trim
Elevator Trim
Rudder Trim
Aileron Trim
Enter Button
List Button
Clear Button
Rolling Selector
Power Switch
LCD Display
G9
XP9303 Transmitter Features (Rear)
Battery Cover
CAUTION: THE BATTERY CONNECTION IS KEYED SO THAT IT CAN ONLY
BE PLUGGED IN ONE DIRECTION. DO NOT FORCE
G10
XP9303 Transmitter Features (Internal)
ELEVATOR TENSION SCREW
RUDDER TENSION SCREW
AILERON TENSION SCREW
THROTTLE TENSION SCREW
Control Stick Tension Adjustment
Remove the six transmitter back screws as shown on the
previous page. Remove the transmitter back, being careful
not to cause damage to any components.
Adjust each screw for desired tension (counter-clockwise
to loosen stick feel; clockwise to tighten stick feel). When
adjusting the throttle ratchet tension, make sure that
the adjusting screw does not touch the PC board after
adjustment is complete.
G11
Advanced Digital Trims
The XP9303’s digital trims feature the Direct Access
display function. While at the Normal display screen, if a
trim lever is moved, the screen will automatically change
to display the graphic position for the trim being adjusted.
The XP9303’s Aileron, Elevator, Throttle and Rudder trim
levers feature an audible center trim beep. This is helpful
in determining the trim levers center position during
flight.
By using the Trim Step Function located in the System
Mode, the movement of the ADT trims can be fine tuned
as needed to match your specific application
Please also note that unlike conventional mechanical trim
levers, when the XP9303 transmitter is in the off position,
no changes can be made to the trim values during
transportation.
Control Stick Length
To adjust the stick length, use the 2mm Allen wrench
(supplied with your XP9303 transmitter) to unlock the
set screw. Turn the wrench counterclockwise to loosen
the screw. Then, turn the stick clockwise to shorten or
counterclockwise to lengthen. After the control stick
length has been adjusted to suit your flying style, tighten
the 2mm set screw. If you desire longer sticks, JR®
offers a stick (JRPA047) that is approximately one inch
longer than standard. This stick, crafted from bar stock
aluminum, is available at your local JR dealer.
G12
SET SCREW
LOOSEN
TIGHTEN
Direct Servo Control (DSC)
For proper DSC hook-up and operation:
Why you should use the DSC function:
1. Leave the transmitter power switch in the Off position.
The transmitter will not transmit any radio frequency
(RF) in this position.
1. The DSC enables you to check the control surfaces
of your aircraft without drawing the fully operational
200mAh from your transmitter battery pack. Instead,
you will only draw approximately 70mAh when using
the DSC function.
2. Plug the DSC cord (purchased separately, JRPA132)
into the DSC port in the rear of the transmitter.
3. The encoder section of the transmitter will now be
operational and the LCD display will be lit.
4. Plug the other end of the DSC Cord into the
receiver charge receptacle. (You must use a 3-wire
switch harness, such as the Deluxe Switch Harness
– JRPA001, or a JR Chargeswitch – JRPA004, for the
DSC function to work.) Turn the switch harness to the
On position.
Note: When you install the charging jack, be sure to
hook the charging jack receptacle securely into the
switch harness charge cord.
2. The DSC function allows you to make final adjustments
to your airplane without transmitting any radio signals.
Therefore, if another pilot is flying on your frequency,
you can still adjust your aircraft and not interfere with
the other pilot’s aircraft. This is also a tremendous tool
to use in the original setup of your aircraft while still
in the workshop. Because of the lower current draw on
your transmitter, your working time at the bench will be
extended between charges.
Note: This function is for bench-checking your
aircraft only.
A—Charge Cord/DSC Receptacle
B—Switch Harness Lead
C—Charger/DSC Cord
B�
A�
C�
JRPA004 Charge Switch
G13
Neckstrap Attachment
An eyelet is provided on the face of the XP9303
transmitter that allows you to connect a Neck Strap
(JRPA023). This hook has been positioned so that your
transmitter has the best possible balance when you use
the neck strap.
Base Loaded Antenna
An optional base-loaded antenna is available for use with
the XP9303 transmitter. It is considerably shorter than
the standard antenna. However, the base loaded antenna
cannot be collapsed for storage inside the transmitter. You
must also use an adapter (JRPA156) to attach the antenna
to your XP9303. The Base Loaded Antenna (JRPA155) is
made of a flexible coil and is covered with a soft plastic
material. Your range will not be affected when using the
base loaded antenna.
Frequency Notes/Aircraft Only Frequencies
The XP9303 transmitter employs a plug-in module for
the transmitter. Per FCC regulation, the transmitter crystal
in the module should only be changed by a certified
technician. Changing of the transmitter crystal by a nonauthorized technician could result in a violation of FCC
rules.
The XP9303 can transmit in either Pulse Code Modulation
(SPCM) or Pulse Position Modulation (PPM, commonly
referred to as FM).
Be certain to observe the following guidelines:
Do not operate your transmitter when another transmitter
is using the same frequency, regardless of whether the
second transmitter is PCM, PPM (FM) or AM. You can
never operate two transmitters on the same frequency
simultaneously without causing interference.
Aircraft-Only Frequencies
JR® Transmitters and receivers are available in 72MHz
frequencies in the United States for use with model
aircraft. Employing 72MHz frequencies does not
require a special operator’s license from the Federal
Communications Commission (FCC).
• A chart for all available frequencies is located on
page I-3 of this manual.
G14
Installation Requirements
It is extremely important that your radio system be
correctly installed in your model. Here are a few
suggestions for installing your JR® equipment:
1. Wrap the receiver in protective foam rubber that is
no less than 3/8 inch thick. Secure the foam to the
receiver with #64 rubber bands. This protects the
receiver in the event of a crash or a very hard landing.
2. The servos should be mounted using rubber grommets
and brass eyelets to isolate them from vibration. Do
not over-tighten the mounting screws; this will negate
the vibration absorption effect of the rubber grommets.
The following diagram will assist you in properly
mounting your servo.
The brass eyelets are pushed from the bottom up in the
rubber grommets. When the servo screw is tightened
securely, it provides the proper security as well as the
proper vibration isolation for your servo.
3. The servos must be able to move freely over their
entire range of travel. Make sure that the control
linkages do not bind or impede the movement of any
of the servos.
4. Mount all switches away from the engine exhaust and
away from any high vibration areas. Make sure the
switch operates freely and is able to operate over its
full travel.
5. Mount the receiver antenna firmly to the airplane
to ensure that it will not become entangled in the
propeller or control surfaces.
Servo Mounting Tab
Screw
Rubber Grommet
Brass Eyelet
Flash Memory
All preprogrammed data is protected by a flash memory
that guards against main transmitter battery failure.
Connections:
Note Separate drawings for Acro, Sailplane and
Helicopter with typical plug order, switch location,
and battery pack connections.
Battery Alarm and Display
When the transmitter voltage drops below 9.0 volts DC,
the display flashes “BATT LOW” and an alarm sounds.
If you are flying when this occurs, land immediately.
G15
XP9303 Helicopter – Heli Mode
INTRODUCTION
The Heli mode of the XP9303 system is intended for use
in model helicopters in 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 but are not limited to:
• 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)
• Switch Assignments for Specific Channels/
Functions
•Trainer System (Selectable Channels for
Student Control)
• Flight Modes (up to 6)
• Timers (Stopwatch, Count-Down, Integrated)
• Dual Rates/Exponential (up to 3 settings each for
Aileron, Elevator and Rudder)
• Servo Monitor (Automatically Renames Channels
According to Assignments)
• 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
• Special Governor Pre-Program Mix
In addition to the numerous features listed above, the
XP9303 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
more on the task of flying.
Heli PROGRAMMING - PLEASE READ
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 XP9303
programming philosophy, functions, and techniques.
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 might be used.
The XP9303’s menus and functions are presented here
in the order that they should be addressed when setting
up a new helicopter. This 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
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
XP9303 is a very intuitive system.
HELI - GETTING STARTED – SYSTEM MENU BASICS
Getting started always 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 collected about the model.
It is also used to activate some of the more advanced
programming features such as Swashplate Types and
Governor Program activation.
H1
ACCESS THE SYSTEM MENU
1. Bring up the SYSTEM Menu by holding down the
ENT button while turning the TX on.
[SYSTEM M.]
INFO-DISP
Model SEL
MDL Name
Type SEL
MDL Reset
MODULAT.
TRANSFER
TRIM STEP
Devic. SEL
SWASH TYP
Model SEL- Model Selection
The first thing to do when setting up a new model is to
select a model number to be used. It is best to select an
unused model number, however, a number that already
contains data for another model may be used so long as
[Model SEL]
Select�
�
�
�
�
�
MODEL 3� MODEL
�
�
�
�
�
�
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.
H2
1
2
3
4
5
data for that model is no longer required. If the model
type is changed before deciding the model number to be
used, any programming in this particular model number
will be lost.
GLID�
ACRO�
HELI�
ACRO�
GLID�
SPCM
PPM
SPCM
SPCM
SPCM
3. Return to the SYSTEM Menu by pressing the
LIST button.
Copy – Copying The Currently Selected Model To Another Model Memory
The Copy function is part of the Model SEL function
covered earlier 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 very 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.
[Model SEL]
Copy
MODEL 3 HELI SPCM
COPY
MODEL 4 HELI SPCM
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.
[Model SEL]
Copy
MODEL 3 HELI SPCM
COPY
MODEL 4 HELI SPCM
H3
Copy (continued)
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.
[Model SEL]
Copy
MODEL
MODEL
MODEL
MODEL
MODEL
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.
H4
3
324
5
HELI
ACRO
HELI
HELI
ACRO
SPCM
PPM
SPCM
PPM
PPM
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.
Data Reset-RESET THE MODEL
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.
[MDL R�
eset]
LST
MODEL 3�
HELI�SPCM
NO
Are you sure? Y/N
YES
1. In the SYSTEM Menu, highlight and select MDL
Reset using the Selector.
3. Press the lowermost button next to YES on the display
to reset all data for this model.
2. Press the CLR button that is next to RES
on the display.
4. Return to the SYSTEM Menu by pressing the
LIST button.
H5
Type Select-TO ACTIVATE THE HELI MODE
After having selected and reset the desired model number
to be programmed, it is time to tell the TX that the Heli
Mode is to be used for this helicopter.
[Type SEL]� �
MODEL 3 HELI
GLID��
ACRO� �
1. In the SYSTEM Menu, highlight and select Type SEL
using the Selector.
HELI
3. Return to the SYSTEM Menu by pressing the
LIST button.
2. Highlight and select HELI using the Selector.
MDL Name-ENTER A NAME FOR THE MODEL
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 TX is switched on.
[MDL Name]
�
MODEL 3�
HELI <VIGOR 3D> SPCM
1. In the SYSTEM Menu, highlight and select MDL
Name using the Selector.
H6
2. Highlight and select the desired characters to form the
model name.
3. Return to the SYSTEM Menu by pressing the
LIST button.
MODULAT- SELECT A MODULATION TYPE
The XP9303 system supports two types of modulation
– SPCM and PPM (FM). The correct modulation type
must be selected to match the receiver in the helicopter or
the system will not function.
Note: The XP9303 system is not designed for use
with “Z” PCM Receivers.
[MODULAT.]
MODEL 3� HELI
Modulation
SPCM PPM
1. In the SYSTEM Menu, highlight and select
MODULAT. using the Selector.
3. Return to the SYSTEM Menu by pressing the
LIST button.
2. Highlight and select either SPCM or PPM to match the
receiver in the helicopter.
H7
TRANSFER – TRANSFER THE MODEL TO ANOTHER TRANSMITTER OR TO DATASAFE
The TRANSFER function can be found in the SYSTEM
Menu and is used to copy the contents of a model
memory to another 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 PCM
XP9303 transmitter or from a DataSafe unit.
TRANSFER A MODEL FROM THE XP9303 – (Transfer function) – To Send
1. Hold the ENT button while plugging the DSC cord into
the back of the transmitter to obtain the
SYSTEM Menu.
2. Highlight and select TRANSFER in the SYSTEM
Menu to obtain the Transfer display.
Plug the other end of the DSC cord into another XP9303
transmitter while holding the ENT button down and
prepare that transmitter for Receive as described below.
Or, plug the other end of the DSC cord into a DataSafe
unit and prepare the DataSafe for Receive.
[TRANSFER]
TRANSMIT
MODEL 3 HELI SPCM
Connect DSC & POWER off
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
XP9303 or DataSafe unit.
H8
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 A MODEL TO THE XP9303 – (Transfer function) – To Receive
1. Hold the ENT button while plugging the DSC cord
into the back of the transmitter to obtain the SYSTEM
Menu. Plug the other end of the DSC cord into
another XP9303 transmitter while holding the ENT
button and prepare that transmitter for Transmit as
described above. Or, plug the other end of the DSC
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.
[TRANSFER]
MODEL 3
RECEIVE
MODEL 4 HELI SPCM
Connect DSC & POWER off
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.
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 XP9303 is ready to
receive data. Press start on the transmitting XP9303 or
DataSafe unit to begin the data transfer to the XP9303.
H9
TRIM STEP
The Trim Step function provides for adjusting the
sensitivity of the XP9303 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.
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 Devic. SEL
display of the SYSTEM menu to acquire the TRIM
STEP display.
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%.
[TRIM STEP]
THRO 100%
AILE� 4
ELEV� 4
RUDD� 4
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.
H10
HOVT�
HOVP�
4
4
HELI - SYSTEM MENU - ADVANCED FUNCTIONS
There are two functions in the SYSTEM Menu that
control some of the more advanced features of the
XP9303 system. They are the Devic. SEL and
Swash Type functions.
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).
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.
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. More
detailed descriptions of these functions can be found later
in the HELI section.
ADDITIONAL FLIGHT MODES 3 and 4
The XP9303 is capable of offering the pilot up to 6
separate flight modes. The XP9303 is factory preset to
offer the pilot 4 separate Flight Modes (N, 1, 2, H). There
are 2 additional forward 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.
[Devic. SEL]
F.MOD THRO Pit.
EXTRA HOLD TRIM
INH
HOLD PitT
SW
LEV
RUD TRIM:COM
GEAR�AUX2�AUX3�FMOD
SW� SW� LEV� SW
OUT:�ACT� ACT� ACT� ACT
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.
[Devic. SEL]
F.MOD THRO
EXTRA HOLD
INH �
HOLD
INH�
SW
AIL D/R�
ELE D/R�
RUD TRIM:COM
GEAR�AUX2�AUX3�AUX4
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.
Pit.
GEAR�AUX2�AUX3�AUX4
TRIM
PitT
RUD D/R
LEV SW GEAR�AUX2�AUX3�FMOD
HOLD
GEAR SW SW� SW� LEV� SW
OUT:�ACT� ACT� ACT� ACT
Once Flight Modes have been activated, two additional
sets of Throttle and Pitch curves numbered 3 and 4 will
appear in the Function Mode.
H11
RUD TRIM: COM – (Flight Mode Trim Options)
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).
[Devic. SEL]
F.MOD THRO Pit.
EXTRA HOLD TRIM
INH
HOLD PitT
SW
LEV
RUD TRIM: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
XP9303 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.
GEAR�AUX2�AUX3�AUX4
GEAR�AUX2�AUX3�FMOD
SW� SW� LEV� SW
OUT:�ACT� ACT� ACT� ACT
SWITCH ASSIGNMENTS
The XP9303 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.
[Devic. SEL]
F.MOD THRO Pit.
EXTRA HOLD TRIM
INH
HOLD PitT
SW
LEV
RUD TRIM:COM
3. Repeat for as many switches as desired.
H12
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.
GEAR�AUX2�AUX3�AUX4
AIL D/R� HOLD SW
ELE
D/R� GEAR SW
GEAR�AUX2�AUX3�FMOD
RUD
D/R SW� LEV� SW
SW�
OUT:�ACT� ACT� ACT� ACT
ACTIVATE/DEACTIVATE SWITCHES
The XP9303 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.
[Devic. SEL]
F.MOD THRO Pit.
EXTRA HOLD TRIM
INH
HOLD PitT
SW
LEV
RUD TRIM:COM
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.
GEAR�AUX2�AUX3�AUX4
GEAR�AUX2�AUX3�FMOD
SW� SW� LEV� SW
OUT:�INH� INH� INH� INH
GOVERNOR PROGRAM ACTIVATION
The XP9303 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.
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
RUD TRIM:COM
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.
GEAR�AUX2�AUX3�AUX4
GEAR�AUX2�AUX3�FMOD
SW� SW� LEV� SW
OUT:�GOV� INH� INH� INH
H13
SWASH TYP-SWASHPLATE TYPE
The Swashplate Mixing function enables the XP9303
system to operate many different types of swashplate
control systems, including 5 different versions of CCPM.
The Swashplate options are:
1 Servo
2 Servo/180°
3 Servo/120°
3 Servo/140°
3 Servo/90°
4 Servo/90°
Non-CCPM, standard mixing type
CCPM
CCPM (JR style, most popular)
CCPM (JR Vigor CS)
CCPM
CCPM
[SWASH TYPE]
3servos
6ch
2ch
140
3ch
Accessing the Swashplate Type Function
1. While pressing the ENT key, switch the transmitter to
the ON position to enter the system mode.
4. Pressing the CLR key will reset the Swashplate Type to
the factory default (Normal) position.
2. Roll the Rolling Selector until SWASH TYP
is highlighted, then press the Selector
to access.
5. To exit the Swashplate Type function, roll the Rolling
Selector to highlight LIST, and press.
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.
H14
This concludes the SYSTEM Menu portion of the Heli
Mode. Continue with FUNCTION LIST below to complete
the Heli setup.
FUNCTION MODE
HELI – FUNCTION LIST
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. If more information is required about a particular
function please refer to the detailed descriptions of the
functions that are included later in the HELI section.
Press the LIST button after the transmitter is powered-up
to obtain the FUNCTION LIST.
D/R & EXP – DUAL RATE AND EXPONENTIAL
[D/R & EXP] 0
AILE
POS-0
POS-1
POS-2
D/R�
100%�
100%�
100%�
100%�
100%�
100%�
performing 3D maneuvers. Dual Rates and Exponential
curves can be combined to produce these traits for most
any helicopter. When programming a Dual Rate and
Exponential curve, think about what kind of response is
desired from the helicopter. For an in-depth description of
D/R and Exponential, please refer to the Dual Rates and
Exponential Curves article in the Glossary.
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.
EXP
LIN
LIN
LIN
LIN
LIN
LIN
2. Use the Selector to change between Aileron,
Elevator and Rudder. Then use it to set dual rate [D/R
and & EXP] 0
exponential values. If exponential has never been AILE
used
POS-0
before, try a low positive value like +20. After a while,
POS-1
increase it gradually until the desired feel is obtained.
POS-2
Use only positive (+) percentages unless there is a
distinct need to increase control sensitivity.
AUTO
NORM:INH
ST-1:INH
ST-2:INH
HOLD:INH
D/R�
100%�
100%�
100%�
100%�
100%�
100%�
EXP
LIN
LIN
LIN
LIN
LIN
LIN
OUTPUT
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 andf 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
Extended Screen
H15
Auto Dual Rate
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, simple 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 - SERVO REVERSING
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.
[REV SW.]
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.
REV.
NORM
THR� AIL� ELE� RUD� GER� PIT� AX2� AX3� AX4
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.
[REV SW.]
REV.
NORM
THR� CH2� CH3� RUD� GER� CH6� ---� AX3� AX4
H16
Sub Trim
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 resolution where the servo reaches
its travel limit and stops moving before the control stick
is fully deflected. For more information on Sub Trims and
linkage setups please refer to the Sub Trim Usage and
Mechanical Advantage article contained in the Glossary.
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 case.
1. Highlight and select Sub Trim in the FUNC.LIST to
obtain the Sub Trim Display.
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�
AILE�0�
ELEV�0�
RUDD�0�
�
�
�
�
�
�
�
GEAR�0
PIT.� 0
AUX2�0
AUX3�0
AUX4�0
Note: If a form of CCPM has been selected, channel
naming will vary.
H17
TRVL ADJ. – TRAVEL ADJUST
Travel Adjust, sometimes referred to as ATV, 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.
For more information on Servo Travel and Mechanical
Advantage please refer to the Sub Trim Usage and
Mechanical Advantage article contained in the Glossary.
[TRVL ADJ.]
THRO H100%
AILE L100%
ELEV D100%
RUDD L100%
�
�
L100%�
R100%�
U100%�
R100%�
�
Note: If a form of CCPM has been selected, channel
naming will vary.
H18
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.
GEAR
PIT.
AUX2
AUX3
AUX4
+100%
+
H100%
+100%
+100%
+100%
-100%
L100%
-100%
-100%
-100%
Swash Mix- CCPM SWASHPLATE Mixing
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.
[Swash Mix]
3servos
140o
The CCPM Swashplate Mixing function (Cyclic Collective
Pitch Mixing) of the XP9303 is designed to allow the
XP9303 to be used in model helicopters that utilize 2servo (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.
AILE� 60%
ELEV� 60%
PIT.� 60%
EXP�
INH
Variations of CCPM Mixing
1) Normal (Standard Mechanical Mixing)
This is the most common form of Swashplate
Mixing, and 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 Vigor CS
CCPM models.
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.
CCPM Servo Connection/Channel Numbers
2-servo (180°)
Ch 2&6 Aileron Ch 3 Elevator
Ch 6 Pitch
3-servo (140˚)
Ch 2&6 Aileron Ch 2, 3&6 Elevator Ch 2,3&6 Pitch
3-servo (90°)
Ch 2&6 Aileron
Ch 2,3&6 Pitch
4-servo (90˚)
Ch 2&6 Aileron
Ch 3 Elevator
Ch 3&8 Elevator
Ch 2,3,6&8 Pitch
3-servo(120°)
Ch 2&6 Aileron Ch 2,3&6 Elevator Ch 2,3&6 Pitch
H19
CCPM Exponential (EXP)
The purpose of this exponential is to remove the nonlinear, or rough movement of the swashplate due to the
mechanical differential of the servo horn.
Accessing the Swashplate Mixing Function
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).
3. Move the Rolling Selector and highlight Swash
Mix. Press the Rolling Selector to access.
1. Place the transmitter power switch in the ON position.
2. Access the Function Mode by pressing the LIST key.
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
o
140
AILE� 60%
ELEV� 60%
PIT.� 60%
EXP�
H20
ACT
THRO HOLD- THROTTLE HOLD
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.
Accessing the Throttle Hold Function
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.
4. Once the Throttle Hold function is activated, the screen
will display the current Throttle Hold value.
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.
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.
[THRO Hold]
ACT
HOLD Pos.
HOLD SW
+14%
STICK AUTO
INH
HOLD DELAY
INH
H21
Stick Auto- Auto Cut Setting
The Stick Auto setting may be easier to think of as an
automatic Throttle cutoff point, since this is the feature
that it performs.
This feature allows you to select the throttle stick position
in which the throttle hold function can be activated in the
Throttle Hold mode. Although the throttle Hold switch is
active, when using this feature the throttle will continue to
function until the throttle stick is moved below the desired
cut position selected by you.
To activate the Stick Auto function, highlight the Stick
Auto function with the selector, and press to access. Next,
roll the selector to increase/decrease the position of the
cutoff point.
Hold Delay
The Hold Delay function allows the throttle servos
movement to be slowed when switching from Throttle
Hold back to a previous Flight Mode. This feature is
helpful when practicing Autos. If the autorotation attempt
is not going well, when the Throttle Hold switch is
released, the throttle will increase more slowly, eliminating
any sudden bursts of throttle which could damage the
mechanics of the model.
The adjustable range is from 1/10 of a second, up to a full
2 seconds of delay.
To activate the Hold Delay, highlight the Hold Delay
function with the selector, and press to access.
Next, roll the selector to the desired delay position, and
press the selector to store. A good starting value is
.75 (3/4) of a second.
[THRO Hold]
H22
ACT
HOLD Pos.
HOLD SW
+14%
STICK AUTO
INH
HOLD DELAY
INH
THRO CURV – THROTTLE CURVES
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.
The XP9303 offers up to five (5) separate throttle curves
with up to seven adjustable points per curve. This function
allows you to customize the throttle curve and pitch curve
together to maximize engine performance at a particular
pitch setting. Once the throttle curves are established,
each can be activated in flight using the 3-position flight
mode switch. If the additional 2 flight modes (numbers 3
and 4) have been activated in the Device Select portion
of the system mode, an additional switch will be used to
activate these modes.
The flight mode switch offers three selectable ranges:
N=Normal, 1=Stunt 1, and 2=Stunt 2.
Optional: 3= Stunt 3, and 4= Stunt 4
[THRO CURV] N
NORM
EXP OFF
IN� 5
OUT� 5
Point-L
Point-1
Point-2
Point-3
Point-4
Point-5
Point-H
The N (Normal) position should be used as the hover
throttle curve.
Positions 1 and 2 (Stunt 1 and Stunt 2) should be used
for aerobatic maneuvers and forward flight. Optional flight
modes 3 and 4 are also designed for use with aerobatic
maneuvers and forward flight.
Note: The throttle trim and hovering throttle levers
are only operable when the flight mode switch is in
the normal position. Thus, in the 1 or 2 positions,
these two functions have no effect. Also, adjusting
the hovering throttle lever and throttle trim has
no effect on the input values of the throttle curve.
Each of the five points of the throttle curve are
independently adjustable from 0–100%. These five
points correspond to the position of the throttle stick.
0.0%
INH
INH
50.0%
INH
INH
100.0%
L
1
2
3 4
5
H
1
2
3 4
5
H
Figure 1: Throttle Curve Normal
[THRO CURV] N
ST-1
EXP OFF
IN� 5
OUT� 5
Point-L
Point-1
Point-2
Point-3
Point-4
Point-5
Point-H
0.0%
INH
INH
50.0%
INH
INH
100.0%
L
Figure 2: Throttle Curve, Stunt 1
The transmitter is preset at the factory to the throttle curve
as indicated by the solid line in figure 1 above. Individual
middle points can be activated and their values increased
or decreased to suit your specific needs.
The throttle trim lever position will affect the
low-point position as shown when in the Normal
mode Throttle Curve.
H23
Accessing the Throttle Curve Function
1. Place the transmitter switch in the ON position.
2. Press the List key simultaneously to enter the
Function Mode.
3. Roll the Rolling Selector to highlight the THRO
CURV function, then press to access.
Note: The letter/numbers directly to the right of
THRO CURV at the top left of the LCD displays the
current Flight mode switch position.
Use NORM for hover curves and 1, 2, 3, and 4 (3 and
4 optional) for stunt curves. We will concentrate on the
hovering curve during this example.
[THRO CURV] N
ST-1
EXP OFF
IN� 5
OUT� 5
Point-L
Point-1
Point-2
Point-3
Point-4
Point-5
Point-H
4. Move the Rolling Selector and highlight the desired
throttle point to be adjusted. Press the Rolling
Selector to open the point value, then roll the Rolling
Selector to increase and decrease the point value.
5. To set curves for flight mode switch position 1,
highlight NORM with the Selector, press, then
select ST-1 from the drop down box and repeat
steps 4 and 5.
6. To set curves for flight mode switch positions 2
through 5, repeat step 6 above.
7. To exit the Throttle Curve function, highlight the LIST
with the Selector, and press.
0.0%
INH
INH
50.0%
INH
INH
100.0%
L
Throttle Curve, Stunt 1
Note: In each curve, the factory setting indicates INH
for points 1, 2, 4 and 5. These values are 16.5%,
33%, 66.5% and 83.5% respectively if no value
changes are made to any other points. If any of the
other points have been changed while these points
were inhibited, the inhibited points will also change
to plot a smooth curve.
If you want to keep this from happening, highlight each
point and press the Rolling Selector twice to activate
each of the points. Repeat as necessary. The values
for each of these points can then be fully adjusted by
the Rolling Selector. To inhibit the points, highlight
the desired point with the Rolling Selector, press the
Rolling Selector to open the point, then press the clear
key (CLR) to inhibit.
H24
1
2
3 4
5
H
Throttle Trim Lever Function
The throttle trim lever is only active when the flight mode
switch is in the normal position. The throttle trim is used
to increase or decrease the engine power when the flight
mode switch is in the Normal mode. The throttle trim lever
has no effect on flight modes 1, 2, 3, 4, or in throttle hold.
Note: Making changes to the throttle trim lever does
not change the input values for any of the points on
the throttle curve; it merely makes adjustments to the
engine idle speed position.
Hovering Throttle Lever
The Hovering Throttle lever increases or decreases the
engine output power for the middle three points set for
the throttle curve. As shown in the figure below, use of
the hovering throttle lever shifts the curve upward or
downward parallel with the original curve. Therefore,
operation of the hovering throttle knob does not cause
any change to the original settings of the throttle curve.
[THRO CURV] N
NORM
EXP OFF
IN� 5
OUT� 5
Point-L
Point-1
Point-2
Point-3
Point-4
Point-5
Point-H
The throttle trim range will affect the throttle curve as
shown. The adjustable range of output using the hovering
throttle lever is approximately +/-15 points as shown in
the diagram below.
Note: The Hovering Throttle has no effect on flight
mode switch positions 1 and 2.
0.0%
INH
INH
50.0%
INH
INH
100.0%
+15
-15
L
1
2
3 4
5
H
H25
Throttle Curve Exponential
With the XP9303 system, individual throttle curves
are selectable to be either straight (linear) or curved
(exponential) setting. With the exponential function on,
you will notice that any sharp angles of the throttle
curve will become more “rounded” or “smooth”,
creating more equal throttle servo movement during
the entire curve range.
Accessing the Throttle Curve Exponential
Function
1. From the Throttle Curve function, press the
Channel key until “EXP” appears at the center of the
LCD screen.
2. Highlight the EXP OFF with the Selector. Press the
Selector to change the display from OFF to ON.
3. To exit the Throttle Curve function, move the Selector
to highlight LIST and press.
H26
PIT. CURV- PITCH CURVES Function
Adjustment of the pitch curve is very similar to the throttle
curve adjustment described in the preceding section. A
thorough understanding of the Throttle Curve Section will
make pitch curve adjustment easier to understand. There
are up to six independent types of pitch curves available:
Normal, Stunt-1, Stunt-2, Stunt-3, and Stunt-4 (Stunt 3
and 4 optional) and Hold. Each pitch curve contains up to
seven adjustable points: L, 1, 2, 3, 4, 5, and H.
Note: The pitch curve for the Throttle Hold
function and Stunt Modes 3 and 4 can only be
set if these functions have been activated in the
System mode previously.
Accessing the Pitch Curve Function
1. Place the transmitter switch in the ON position.
2. Press the LIST key to enter the Function mode.
3. Use the Selector to highlight the PIT. CURV function,
and press the Selector to access.
Note: The Letter, numbers directly to the
right of PIT. CURV at the top right portion of
the LCD is the current flight mode switch position.
(N, 1, 2, 3, 4 or H).
Use NORMAL for hover curves and 1 through 4 (3 and
4 optional) for stunt curves. We will concentrate on the
hovering curve during this example.
[PIT. CURV] N
NORM
EXP OFF
IN� 5
OUT� 5
Point-L
Point-1
Point-2
Point-3
Point-4
Point-5
Point-H
4. Move the Rolling Selector and highlight the desired
Pitch point to be adjusted. Press the Rolling Selector
to open the point value, then roll the Rolling Selector
to increase and decrease the point value.
5. To set curves for flight mode switch position 1,
highlight NORM with the Selector, press,
then select ST-1 from the drop down box
and repeat steps 4 and 5.
6. To set curves for flight mode switch positions 2
through 5, repeat step 6 above.
7. To exit the Pitch Curve function, highlight the LIST with
the Selector, and press.
0.0%
INH
INH
50.0%
INH
INH
100.0%
L
Note: In each curve, the factory setting indicates INH
for points 1, 2, 4 and 5. These values are 16.5%,
33%, 66.5% and 83.5% respectively if no value
changes are made to any other points. If any of the
other points have been changed while these points
were inhibited, the inhibited points will also change
to plot a smooth curve.
1
2
3 4
5
H
If you want to keep this from happening, highlight each
point and press the Rolling Selector twice to activate
each of the points. Repeat as necessary. The values
for each of these points can then be fully adjusted by
the Rolling Selector. To inhibit the points, highlight
the desired point with the Rolling Selector, press the
Selector to open the point, then press the clear key
(CLR) to inhibit.
H27
Hovering Pitch Lever
The Hovering Pitch lever operates in the same manner as
the Hovering Throttle knob. It is only operable while the
flight mode switch is in the ‘’N’’ (normal) position, and its
function is to shift the middle portion of the curve upward
or downward.
Example of Throttle Curve and Pitch Curve
Settings
An example of throttle curve and pitch curve settings for
aerobatic specifications is shown below in the form of
graphs. Details of the curves will differ depending on the
helicopter specifications. In these examples, the throttle
open-close stroke and autorotation pitch stroke are set 0
to 100 to ease your understanding of other curves.
Note: Dotted line indicates Throttle and Pitch curve range/movements using
the Hover Throttle and Hover Pitch levers.
Throttle
Pitch
100%
50%
Normal
Hover
0%
L
1
2
3
4
5
50%
L
H
Throttle
1
2
3
4
5
Pitch
100%
50%
100%
100%
Stunt 1
Aerobatics
50%
0%
L
1
2
3
4
5
0%
H
0%
H
L
1
2
3
4
5
Pitch
H
100%
Throttle
Hold
50%
0%
H28
L
1
2
3
4
5
H
REVO.MIX- Revo Mix Function: Non Heading Lock Gyros Only
The Revolution Mixing function is designed for use
with conventional “Rate” gyros only, and mixes tail
rotor with the Throttle and Pitch Curve functions to
counteract torque from the main rotor blades. When set
up correctly, the helicopter should climb and descend
without a tendency to yaw in either direction. Because
torque reaction varies with different power settings, it is
necessary to vary the tail rotor pitch at the same time. The
XP9303 offers two separate revolution mixing programs,
with independent up and down mixing for each—one
for Flight mode position N and the other for Stunt 1 and
Stunt 2 positions. The U (Up) mixing adjusts the tail rotor
compensation for the mid to high throttle setting and the
D, or down, mixing adjusts the tail rotor compensation for
the mid to low throttle setting. Thus, if you were to move
the throttle from the low to high position, the tail rotor
servo would move from D through Hover (mid) and to the
U setting.
Note: A letter will appear directly to the right
of the REVO.MIX on the top of the LCD to
indicate the current throttle stick/mix position
(U for Up, D for Down).
[REVO.Mix] D
NORM�Up�
�
Dn�
10%
10%
STNT�Up�
�
Dn�
5%
5%
Accessing the Revolution Mixing Function
Setting Up Revolution Mixing
1. Place the transmitter switch in the ON position.
Set up the helicopter so that it will hover with the tail
rotor trim centered. Establish the helicopter into a
stable hover, then steadily increase the throttle to
initiate a steady climb. The body of the helicopter will
move in the opposite direction to the main rotor rotation.
Increase the U, or Up, setting until the helicopter
climbs with no tendency to turn. At a safe altitude,
close the throttle; the helicopter will descend and the
body will turn in the same direction as the main rotor
rotation. Increase the D, or down, mix until the helicopter
descends with no tendency to turn. Throttle stick
movements should be slow, and the initial acceleration
and deceleration swings should be ignored.
2. Press the LIST key to enter the Function Mode.
3. Move the Rolling Selector to highlight the
REVO.MIX function, then press the Rolling
Selector to access.
4. Move the Rolling Selector to highlight the desired
Revo Mix value to be adjusted. Press the Rolling
Selector to open the desired value. Rotate the Rolling
Selector to increase or decrease the value as needed.
5. Press the CLR key to reset the values to 0% if needed.
6. To exit the Revolution Mixing function, move the
Rolling Selector to highlight LIST, and press.
When throttle is in the hold position (autorotation),
revolution and acceleration mixings are off. The
Acceleration Mixing function is provided to
compensate for the main rotor acceleration (and
deceleration) torque. The magnitude and duration
of the signal to the tail rotor depends on the rate of the
throttle changes. Thus, quick, jerky throttle inputs will
yield more noticeable tail compensation.
H29
GYRO SENS- Gyro Gain Function
The XP9303 offers two different types of Gyro Gain
Sensitivity Adjustments: manual or automatic. This
feature gives the user the choice of selecting gyro
sensitivity through the rudder dual rate switch (AUX-2) or
automatically through the flight mode switch. The Gyro
Gain function allows you to have 2 different gyro gain
settings in Manual (RUDD D/R) mode, and 3 separate
gain settings in AUTO Mode.
If the manual (RUDD D/R) mode is selected, gain
changes are made manually by the pilot using the
Rudder D/R switch.
If Auto mode is selected, the Gyro gain is automatically
changed by linking directly to the Flight Mode switch.
If you do not intend to use this function, leave this
operation at the factory default position (OFF).
[GYRO SENS] 0
RUDD D/R
Pos.0�50%
Pos.1�50%
[GYRO SENS] 0
AUTO
Pos.0�50%
Pos.1�50%
Pos.2�50%
NORM:�Pos.0
ST-1:�Pos.0
ST-2:�Pos.0
Accessing the Gyro Gain Function
1. Place the transmitter switch in the ON position.
2. Press the LIST key to enter the Function mode.
3. Move the Rolling Selector and highlight the GYRO
SENS function. Press the Rolling Selector to access.
4. Highlight INH with the Rolling Selector, then press
to open the options box. Highlight the desired function
type Manual (RUDD D/R) or AUTO, then press the
Rolling Selector to select.
5. Move the Rolling Selector to highlight the function
to be adjusted.
6. Press the Rolling Selector to select the gain position
to be adjusted, then roll the Rolling Selector to
increase or decrease the gain values as needed.
H30
7. If AUTO mode has been selected, once the gain values
for positions 0, 1, and 2 have been set, move the
Rolling Selector to highlight the mode positions
(NORM, ST-1, and ST-2), and select the gain position
(value) for each mode.
8. To exit the Gyro Gain function, move the Rolling
Selector to highlight LIST, and press.
Flight Modes/ Recommended Gyro Gain positions
Normal:
Stunt 1:
Stunt 2:
Hold:
0
1
2
1
Gyro Remote Gain Connections: JR G500T and Other
Remote Gain Gyros
Connect the white connector from the G500T to the AUX2
channel of the receiver, and the black connector to the
rudder channel.
SYSTEM
BATT
White to AUX2
S
NEW ABC&W SYSTEM
AUX2
AUX1
GEAR
Note: This function is designed to be used only
with gyros that have in-flight proportional gain
adjustment capability. Single and dual rate gyros that
use a potentiometer to adjust the gain cannot utilize
this function.
RUDD
7 CHANNEL SPCM RECEIVER
ELEV
72 MHz
AILE
JAPAN REMOTE CONTROL CO., LTD
THRO
MADE IN MALAYSIA
Black to Rudder
1
2
O
N
Mix-Thro- Cyclic-to-Throttle Mixing
The XP9303’s Cyclic-to-Throttle function is designed to
correct any under- or over-speeding of the main rotor
resulting from load changes placed upon the engine when
an Aileron, Elevator, or Rudder control is given.
The most common use for Cyclic-to-Throttle mixing is for
Stunt Modes 1-4, allowing the main rotor RPM to remain
consistent throughout aerobatic and 3D maneuvers. It is
not necessary to use Cyclic-to-Throttle mixing in Hover
(Normal) mode since control inputs are generally small
and much less aggressive.
Note: If a Governor will be used for rpm control, it is
not necessary to use the Cyclic-to-Throttle Mixing,
and all values should be left at the factory default
position (0%).
[MIX
THRO] L-ON
AILE THRO
SW SEL
L:�� 0%
R:�� 0%
ELEV THRO
SW SEL
D:�� 0%
U:�� 0%
RUDD THRO
SW SEL
L:�� 0%
R:�� 0%
H31
Rudder-to-Throttle Mixing
During 540 stall turns and fast pirouettes, the tail rotor
absorbs power and the main rotor rpm decays.
This can be compensated for through the use of the
RUDDTHRO mix. By adding a throttle value to this
mix, when rudder is applied, the throttle is advanced
or reduced depending on the desired change in rpm. A
good starting value would be +15% for R (right mixing)
and -10% for L (left mixing). Final tuning needs to be
performed during flight-testing. A + value increases
throttle; a – value decreases throttle.
[MIX
THRO] L-ON
AILE THRO
SW SEL
L:��20%
R:��20%
H32
ELEV THRO
SW SEL
D:��20%
U:��20%
RUDD THRO
SW SEL
L:��-15%
R:��+15%
Aileron-to-Throttle and Elevator-to-Throttle Mixing
Accessing the Cyclic-to-Throttle Function
When doing a roll, flip, or anytime hard-over cyclic is
used, the main rotor’s rpm can decay due to increased
loads. This can be compensated for through the use of
the AILETHRO, and ELEVTHRO mixing. By adding
a throttle value to these mixes, when Aileron or Elevator
Cyclic control is applied, the throttle is advanced to
compensate for the increase in loading to the engine.
A good starting value is between 10%–30 % in both
directions for both Aileron and Elevator. Final tuning
needs to be performed during flight-testing. A + value
increases throttle; a – value decreases throttle.
[MIX
1. Place the transmitter switch in the ON position.
2. Press the LIST key to enter the Function mode.
3. Move the Rolling Selector and highlight the MIXTHRO function. Press the Rolling Selector to access.
4. Highlight the desired value to be adjusted with
the Rolling Selector, then press to open the
options box. Roll the Rolling Selector to adjust
the value as needed.
THRO] L-ON
AILE THRO
SW SEL
L:��20%
R:��20%
ELEV THRO
SW SEL
D:��20%
U:��20%
RUDD THRO
SW SEL
L:��-15%
R:��+15%
Setting the Desired Flight Modes for Cyclic-to-Throttle Mixing
The XP9303 allows you to select the specific Flight
modes that the Cyclic-to-Throttle Mixing will be active.
The factory default position is ON for all Flight modes,
which is not ideal in most cases. As mentioned above, the
Cyclic-to-Throttle mix is generally used for Stunt (Flight)
modes only, so it will be necessary to select the Cyclic-toThrottle Mixing for the desired flight modes.
6. Press the Rolling Selector to open the Flight Mode
options box. Highlight the desired flight mode to be
set (NRM, ST1, ST2, ST3, ST4, GER), then press
the Rolling Selector to turn the mixing on or off for
each of the active flight modes.
7. To exit the Cyclic-to-Throttle function, move the
Rolling Selector to highlight LIST, and press.
5. Move the Rolling Selector to highlight the SW SEL
for each of the Cyclic-to-Throttle Mixes to be used.
[MIX
THRO] L-ON
AILE THRO
SW SEL
L:�
ON �10%
NRM
ON
R:��
12%
OFF
ST1
ELEV THRO
SW SEL
D:��20%
ST2
GER
U:��22%
RUDD THRO
SW SEL
L:��0%
R:��0%
H33
GOVERNOR- GOVERNOR FUNCTION
Note: The GOVERNOR function is only listed/shown
in the Function Mode when first activated/selected in
the Device Select function in System Mode.
The XP9303’s Governor function is designed to be used
with most currently available Governors on the Market.
The Governor function allows the Governor rpm values
to be set for each of the Active Flight modes, and will
automatically change the Governor rpm values as set
when the Flight Mode switch is moved through each of
the active flight modes.
The value range in the Governor function is +/- 0%–
125%, and its values follow the Travel Adjust values
exactly. In other words, a desired Travel Adjust value of
+55% would also be +55% in the Governor function.
Accessing the Governor Function
1. Place the transmitter switch in the ON position.
2. Press the LIST key to enter the Function mode.
3. Move the Selector and highlight the GOVERNOR
function. Press the Selector to access.
4. Highlight the desired value to be adjusted with the
Selector, and then press to access the value. Roll the
Selector to adjust the value as needed.
5. To exit the Governor function, move the Selector to
highlight LIST, and press.
Note: Flight Modes ST-3 and ST-4 will only be
shown if activated previously in System Mode.
The Governor program, when activated in System Mode,
functions through the GEAR channel (Channel 5) of the
XP9303. When connecting a Governor to the receiver, the
rpm signal lead from the Governor would be connected to
the Gear (CH5) channel for proper operation.
[GOVERNOR]
NORM: + 55%
ST-1: + 80%
ST-2: + 85%
ST-3:�+ 0%
ST-4: + 0%
HOLD: + 0%
For Governors like the Model Avionics® “Throttle
Jockey™,” you would leave the Travel Adjust values for
the Gear channel at +/-100%, and you would then set
your Governor rpm values from the rpm calculator in the
Governor function.
For other brand Governors, you would also leave
the Travel Adjust values for the Gear Channel (CH5)
at +/-100%. You could then increase the values in the
Governor function above +/-100% up to +/-125% to
increase the rpm remotely from the preset rpm selected at
the Governor.
Note: To turn off the Governor Function for engine
tuning, etc. it will be necessary to return the value for
the desired flight mode to zero. Remember the value
so it can be re-entered after tuning.
H34
PROG MIX 1-6 – PROGRAMMABLE MIXES 1 through 6
The XP9303 System provides 4 Standard programmable
mixes (PROG.MIX3 through PROG.MIX6) and 2 MultiPoint programmable mixes (PROG.MIX1 & PROG.MIX2).
Programmable mixes are used whenever the pilot wants
a channel to react or move as a result of providing input
to another channel, or to simply cause a channel to move
by moving a switch or lever. They are typically used to
compensate for deficiencies in helicopter design/setup
such as eliminating a pitch to aileron, or pitch to elevator
trim change issue when collective is given. They are also
used to activate special helicopter functions like Retracts,
Landing Lights, etc.
Multi-Point Mixing provides the ability to define a
customized “curve” of travel that the Slave channel will
follow as it reacts to the Master channel. It is different
from Normal Mixing in the sense that Normal Mixing
results in a linear movement of the Slave channel in
relation to the Master. With Multi-Point Mixing there are 7
points (includes end points) along the travel of the Master
channel that can be adjusted to control the action of the
Slave channel (more or less travel in the same/opposite
direction) and provides the ability to deviate from a linear
mixing action.
The channel that receives the original input from the pilot
is called the Master channel, while the channel that reacts
to the Master is called the Slave channel. Mixing occurs
when the pilot provides an input to the Master channel
or by moving a stick, switch, or lever. The transmitter
automatically generates an input for the Slave channel
based on the pilot’s input to the Master channel and the
parameters defined in the programmable mixer.
Mixes are programmable, allowing any of the 9 channels
to be Master, Slave or both. The mixing parameters are
also programmable and include the direction of travel
of the Slave channel; the amount of travel for the Slave
channel; the Offset (where the mix starts and changes
direction) and the switches/levers/sticks that are used
to turn a mixer on and off. All of these elements are
selectable and adjustable in Programmable Mixes.
Some examples of how programmable mixers might be
used include but are certainly not limited to:
• Swashplate Timing: Improves Rolling and
Vertical Maneuver tracking
This is a condition when the heli will not roll on its axis
(tail boom) correctly, or pulls to the Left or Right during
vertical Maneuvers (loops, stall turns, etc.)
Most Helis need and can benefit from this form of mix to
improve their overall flight performance. This trick mixing
is used by most of the pros to make their models fly more
accurately, and in turn, more easily.
2 Separate Mixes are required
Mix 1: Elevator to Aileron (Corrects vertical
tracking)
By using a program mix Elevator to Aileron to correct an
Vertical pull/ issue, the mix will allow the Aileron servo
to move just a little bit in the opposite direction of the out
of track direction in order to keep the aircraft from pulling
left or right when a vertical maneuver is performed. This
standard mixer would designate the Elevator as the Master
and the Ailerons as the Slave.
Mix 2: Aileron to Elevator (Corrects Rolling
Manauvers)
To add swashplate timing for Rolling maneuvers, a similar
mix of Aileron (Master) to Elevator (Slave) would be
created additionally. For these types of mixes, you would
use Standard Program Mix, numbers 3 through 6.
H35
PROG MIX 1-6 – PROGRAMMABLE MIXES 1 through 6 (continued)
• Eliminate Pitch to Collective Trim Changes
(non CCPM only)
This is a condition when the Heli rolls left or right, or
pitches fore or aft when a collective input is given. This
is commonly caused by a mechanical geometry issue
in the design of the servo linkages and mechanical
mixers/levers. By using a program mix for Pitch-toAileron to correct an Aileron trim change issue, the
mix will allow the Aileron servo to move just a little
bit in the opposite direction of the out of trim direction
in order to keep the helicopter from rolling, while
Collective pitch is added or reduced. This standard
mixer would designate the Pitch (Collective) as the
Master and the Ailerons as the Slave. For this type
of Mix, you would use Standard Program Mixes 3
through 6.
H36
• Activating Retractable Gear via the Flight
Mode switch
This form of mix would allow you to activate your
retractable landing gear via your Flight mode switch.
It could be set so that in Normal (Hover) and Throttle
Hold (Hold) modes, the retracts would be down, and
when you move the Flight Mode switch to positions
1 or 2, the retracts would automatically go up and
stay up in these modes until you return to Normal or
Throttle Hold. This type of mix reduces the workload
on the pilot, so they can be more focused on flying
the model. This type of mix would use Multi Point
Programmable mixes 1 or 2, and would designate
FMOD (Flight Mode switch) as the Master and Gear or
another unused auxiliary channel as the slave.
The possibilities are endless and limited only by
the imagination.
Swashplate Timing Mixes Example: Elevator-to-Aileron (Corrects vertical tracking)
Perhaps the best way to describe a Programmable Mix is
by example. The example below demonstrates a program
mix for a heli that pulls or climbs to the left when pulling
vertical into a maneuver such as a loop or stall turn. If
a mix is set up to provide a couple of degrees of Right
aileron when up Elevator is given, the aircraft will then
climb vertically with no change in Aileron tracking.
The mix parameters will be selected and set in the
following order: Program Mix number (3-6), Master and
Slave channels, Mix Position and Flight Mode. This is
generally a good sequence to follow when setting up a
Programmable Mix. In this situation, the Offset value
would remain at 0% (1/2 Stick).
Program Mix Number. Highlight and select one of the
Standard Programmable Mixers (PROG.MIX3 - PROG.
MIX6) to obtain the first Programmable Mix display. Then
press ACT next to CLR or highlight and select INH to
obtain the main mix display. The example
is using PROG.MIX3.
This mix uses the Elevator as the Master and the Aileron
as the Slave. The mix can be turned on and off via the
Flight Mode switch, so that you can activate the mix only
in the flight modes where the trim change is noted, most
commonly forward flight modes 1–4 only.
[PROG.Mix3] 0
ELEV AILE
NRM
ST1
Pos0 � 0%
Pos0 � 0%
ST2
HLD
GER
POS1
POS0
Pos0� +0%
�
+5%
Offset
0
1. Select Master. All Programmable Mixers default
to Elevator as Master and Aileron as the Slave
(ELEVAILE). The first ELEV is the Master and the
second AILE represents the Slave. Since the Elevator
is to be the Master in this example, highlight the first
channel with the Selector and select ELEV to the left
of the arrow.
3. Select Position and Flight Modes. Move the Selector
to highlight each of the active flight modes (NRM,
ST1,ST2, ST3, ST4, GER, and then select the mix
position (0 or 1) to be used. Since we will set the mix
value in position 1, and flight modes where the mix
would not be required would be set to the POS 0 mix
position (will be left at 0%).
2. Select Slave. Highlight and select THRO to the right of
the arrow to obtain a list of channels that can be used
as the Slave. Highlight and select AILE as the Slave.
The number will change from 0 to 1 as the switch is
moved back and forth. When the number is 0, the mixer
is looking at the Pos0 values (not programmed yet) and
when it is a 1 it is looking at the Pos1 values (also not
programmed yet). For this example, we will assume that
this mix will be used in Stunt Modes 1 and 2 only.
[PROG.Mix3] 0
ELEV AILE
NRM
POS1
POS0
ST1
Pos0 � 0%
Pos0 � 0%
ST2
HLD
GER
Pos0� +0%
�
+5%
Offset
0
H37
Swashplate Timing Mixes (continued)
4. Travel and Direction. Highlight POS 1 with the
Selector and Press to access the values. Move the
Elevatorstick to the full up position and the lower
value next to Pos1 should be highlighted. Set the
lower Pos1 parameter to a low negative or positive
value (check aileron function for proper direction) to
a starting value of between 3% and 5%. This is the
amount of deflection of the Aileron (Slave channel)
that is to occur when the mixer is turned on and the
Elevator is pulled up.
Example: If the model pulls to the left during a loop,
you would want to set a value so that when up Elevator
is given, the mix would provide a small amount of right
Aileron to correct this problem.
H38
If an Elevator-to-Aileron mixing value is also required
for Down Elevator, move the Elevator stick to the down
position. The upper POS 1 value will then be highlighted
and can be adjusted as needed.
5. Offset. Leave the offset value to 0% for this mix, ad 0%
will correspond to the center stick position.
6. Verify Proper Mix Operation. Move the Flight Model
switch to the Stunt 1 or Stunt 2 positions, and move
the elevator stick from center to full up, and from
center stick to full down. If the mix is activated and
functioning properly, you should see a slight aileron
servo movement (easiest to see at the aileron servo
arm) when the Elevator stick is moved. Please verify
that the Aileron servo is moving in the desired
direction to correct the trim problem at this time.
Next, switch the Flight Mode switch to the Normal or
Throttle Hold positions (set to off in this example),
and verify that the mix is being turned off for these
desired flight modes.
Swashplate Timing: Aileron-to-Elevator (Corrects Rolling Maneuvers)
This form of mix functions and is set up exactly as we
have outlined in the Elevator-to-Aileron Mix section, and
allows the helicopter to roll more axial along the Tail
Boom of the model by adding a slight amount of Elevator
to each direction of Aileron.
Program Mix Number. Highlight and select one of the
Standard Programmable Mixers (PROG.MIX3 - PROG.
MIX6) to obtain the first Programmable Mix display.
Then press ACT next to CLR or highlight and select INH
to obtain the main mix display. The example is using
PROG.MIX3.
Setup Tip: Most helicopters that have a Clockwise
Rotation Rotor require a small amout of Up Elevator
for right rolls, and a small amount of Down Elevator
for left rolls.
[PROG.Mix3] 0
AILE ELEV
NRM
POS1
POS0
ST1
Pos0 �+5%
Pos0 �+5%
ST2
HLD
GER
Pos0� 0%
�
0%
Offset
0
H39
Swashplate Timing: Aileron to Elevator (continued)
1. Select Master. All Programmable Mixers default
to Aileron as Master and Elevator as the Slave
(AILEELEV). The first AILE is the Master and the
second ELEV represents the Slave. Since the Aileron
is to be the Master in this example, highlight the first
channel with the Selector and select AILE to the left
of the arrow.
3. Select Position and Flight Modes. Move the Selector
to highlight each of the active flight modes (NRM,
ST1,ST2, ST3, ST4, GER, and then select the mix
position (0 or 1) to be used. Since we will set the mix
value in position 1, and flight modes where the mix
would not be required would be set to the Pos0 mix
position (will be left at 0%).
2. Select Slave. Highlight and select THRO to the right of
the arrow to obtain a list of channels that can be used
as the Slave. Highlight and select ELEV as the Slave.
The number will change from 0 to 1 as the switch is
moved back and forth. When the number is 0, the mixer
is looking at the Pos0 values (not programmed yet) and
when it is a 1 it is looking at the Pos1 values (also not
programmed yet). For this example, we will assume that
this mix will be used in Stunt Modes 1 and 2 only.
[PROG.Mix3] 0
AILE ELEV
NRM
ST1
Pos0 �+5%
Pos0 �+5%
ST2
POS1
POS0
4. Travel and Direction. Highlight Pos1 with the Selector
and press to access the values. Move the Aileron
stick to the full right position and the lower value next
to Pos1 should be highlighted. Set the lower Pos1
parameter to a low negative or positive value (check
elevator function for proper direction, you want up
elevator ) to a starting value of between 3% and 5%.
This is the amount of deflection of the Elevator (Slave
channel) that is to occur when the mixer is turned on
and the Aileron is pushed Right.
Example: If the model ends in a nose high attitude after
a right roll, you would want to set a value so that when
Right Aileron is given, the mix would provide a small
amount of up elevator to correct this problem.
If the model ends in a nose down position after a Left Roll,
you would want to set a value so that when Left Aileron
is given, the mix would provide a small amount of Down
Elevator to correct this problem. The upper Pos1 value
will then be highlighted and can be adjusted as needed.
H40
HLD
GER
Pos0� 0%
�
0%
Offset
0
4. Offset. Leave the offset value to 0% for this mix, ad 0%
will correspond to the center stick position.
Verify Proper Mix Operation. Move the Flight Model
switch to the Stunt 1 or Stunt 2 positions, and move the
Aileron stick from center to full Right, and from center
stick to full Left. If the mix is activated and functioning
properly, you should see a slight Elevator servo
movement (easiest to see at the elevator servo arm) when
the Aileron stick is moved. Please verify that the Elevator
servo is moving in the desired direction to correct the trim
problem at this time. Next, switch the Flight Mode switch
to the Normal or Throttle Hold positions (set to off in this
example), and verify that the mix is being turner off for
these desired flight modes.
STANDARD PROGRAMMABLE MIXES – Example: Right Aileron with Positive Pitch
Perhaps the best way to describe a Programmable Mixer
is by example. The example below demonstrates a
program mix for a heli that pulls or climbs to the left when
collective pitch is added. If a mix is set up to provide a
couple of degrees of Right aileron when positive pitch
is added, the helicopter will then climb vertically with
no change in Aileron trim. Once the throttle is advanced
below mid stick, the mix would not affect the Aileron trim
unless trim in this direction is needed and added to the
mix.
The Mix parameters will be selected and set in the
following order: Program Mix number (3–6), Master and
Slave channels, Mix Position and Flight Mode. This is
generally a good sequence to follow when setting up a
Programmable Mix. In this situation, the Offset value
would remain at 0% (1/2 Stick). For more information
regarding Programmable Mixers please see the detailed
descriptions of the functions that are included later in the
HELI section.
1. Program Mix Number. Highlight and select one of
the Standard Programmable Mixers (PROG.MIX3
- PROG.MIX6) to obtain the first Programmable Mix
display. Then press ACT next to CLR or highlight
and select INH to obtain the main mix display. The
example is using PROG.MIX3.
This mix uses the Pitch as the Master and the Aileron as
the Slave. The mix can be turned on and off via the Flight
Mode switch, so that you can activate the mix only in the
flight modes where the trim change is noted.
[PROG.Mix3] 0
PIT. AILE
NRM
POS1
POS0
ST1
Pos0 +
Pos0 +
ST2
ST3
5%
3%
ST4
HLD
Pos0�
�
0%
0%
GER
Offset
0
H41
STANDARD PROGRAMMABLE MIXES – Example: Right Aileron with Positive Pitch (continued)
4. Select Position and Flight Modes. Move the Selector
to highlight each of the active flight modes (NRM, ST1,
ST2, ST3, ST4, GER, and then select the mix position
(0 or 1) to be used. Since we will set the mix value in
position 0, and flight modes where the mix would not
be required would be set to the POS 1 mix position
(will be left at 0%).
2. Select Master. All Programmable Mixers default to Pitch
as Master and Aileron as the Slave (PITAILE). The
first PIT is the Master and the 2nd AILE represents
the Slave. Since the Pitch is to be the Master in this
example, highlight the first channel with the Selector
and select PIT to the left of the arrow.
3. Select Slave. Highlight and select THRO to the right of
the arrow to obtain a list of channels that can be used
as the Slave. Highlight and select AILE as the Slave.
[PROG.Mix3] 0
PIT. AILE
NRM
ST1
Pos0 +
Pos0 +
ST2
POS1
POS0
5. Travel and Direction. Highlight Pos0 with the Selector
and Press to access the values. Move the throttle
stick to the full high position and the upper value next
to Pos0 should be highlighted. Set the higher Pos0
parameter to a low negative or positive value (check
aileron function for proper direction) to a starting
value of between 3% and 5%. This is the amount of
deflection of the Aileron (Slave channel) that is to
occur when the mixer is turned on and the throttle is
moved from center to full throttle.
If an Aileron mixing value is also required for center stick
to low Pitch, move the throttle stick to the low position.
The lower Pos0 mix value will then be highlighted and
can be adjusted as needed.
6. Offset. Leave the offset value to 0% for this mix, and
0% will correspond to the center stick position.
H42
The number will change from 0 to 1 as the switch is
moved back and forth. When the number is 0, the mixer
is looking at the Pos0 values (not programmed yet) and
when it is a 1 it is looking at the Pos1 values (also not
programmed yet). For this example, we will assume that
this mix will be used in Stunt Modes 1 and 2 only.
GER
5%
3%
Pos0�
�
0%
0%
Offset
0
7. Verify Proper Mix Operation. Move the Flight Model
switch to the Stunt 1 or Stunt 2 positions, and move
the Throttle stick from center to full throttle, and from
center stick to low throttle. If the mix is activated and
functioning properly, you should see a slight aileron
servo movement (easiest to see at the aileron servo
arm) when the throttle stick is moved. Please verify that
the Aileron servo is moving in the desired direction
to correct the trim problem at this time. Next, switch
the Flight Mode switch to the Normal or Throttle Hold
positions (set to off in this example), and verify that the
mix is being turned off for these desired flight modes.
MULTI-POINT MIXES – Example: FMOD to Gear Mixing (Retract and other Functions)
The example below demonstrates a Multi-Point
Program Mix for coupling the Retractable Gear function
to the Flight Mode switch so that the Gear will
automatically move up and down when moving through
the Flight modes.
This Multi-Point mix (mixes 1 and 2) will use the FMOD
(Flight Mode switch) as the Master and the Gear (or other
available auxiliary channels) as the Slave. The mix will be
activated with the Flight Mode switch.
1. Program Mix Number. Highlight and select one of
the Multi-Point Programmable Mixers (PROG.
MIX1 or PROG.MIX2) to obtain the first Multi-Point
Programmable Mix display. Then press ACT next to
CLR or highlight and select INH to obtain the main
mix display. The example is using PROG.MIX1.
The Mix parameters will be selected and set in the
following order: Program Mix number (1 or 2),
Master and Slave Channels, switch Selection, Set
Points Travel/Direction, and Expo. This is generally a
good sequence to follow when setting up Multi-Point
Programmable Mixers. For more information regarding
Multi-Point Programmable Mixers, please see the detailed
descriptions of the functions that are included later in the
HELI section.
[PROG.Mix1]
FMOD GEAR
SW SELECT
EXP
OFF
IN 17 OUT +80
Point-0
Point-1
Point-2
Point-3
Point-4
Point-5
Point-6
0
+80
-80
-80
INH
INH
+80
0
1
2
3 4
5
6
Flight Mode switch in Normal position
2. Select Master. All Programmable Mixers default
to Throttle as both the Master and the Slave
(THROTHRO). The first THRO is the Master and
the second THRO represents the Slave.
Highlight and select the first THRO to the left of the
arrow to obtain a list of channels and select
FMOD as the Master.
3. Select Slave. Highlight and select THRO to the
right of the arrow to obtain a list of channels that can
be used as the Slave. Highlight and select GEAR
as the Slave. Now, if you move the Flight Mode or
Throttle Hold switches, you will see the vertical
cursor on the screen move to one of the 7 points for
each of the flight modes. Point 1 will be Normal,
Point 2 will be Stunt 1, Point 3 will be Stunt 2, and
Point 6 will be Throttle Hold.
H43
MULTI-POINT MIXES – FMOD to Gear (continued)
4. Select switch. Scroll down, highlight, and press SW
SELECT. The Box will open to display the activated
Flight Modes. Move the Selector to highlight each of
the Flight Modes, and press to select ON or OFF for
the mix in each of the Flight Modes. For this example,
the Mix will be set to the ON position for Flight Modes
NRM, ST1, ST2, and HLD.
[PROG.Mix1]
FMOD GEAR
SW SELECT
EXP
OFF
IN 33 OUT -80
Point-0
Point-1
Point-2
Point-3
Point-4
Point-5
Point-6
0
+80
-80
-80
INH
INH
+80
0
1
2
3 4
5
6
2
3 4
5
6
2
3 4
5
6
Flight Mode Switch in ST1 Position
[PROG.Mix1]
FMOD GEAR
SW SELECT
EXP
OFF
IN 50 OUT -80
Point-0
Point-1
Point-2
Point-3
Point-4
Point-5
Point-6
0
+80
-80
-80
INH
INH
+80
0
1
Flight Mode Switch in ST2 Position
[PROG.Mix1]
FMOD GEAR
SW SELECT
Point-0
Point-1
Point-2
Point-3
EXP
Point-4
OFF
Point-5
IN 100 OUT +80 Point-6
0
+80
-80
-80
INH
INH
+80
0
1
Flight Mode Switch in Hold Position
H44
MULTI-POINT MIXES – FMOD to Gear (continued)
5. Set Points for Travel and Direction. There are
7 points displayed. A negative value at a point
typically indicates a Gear Up movement at that point
and a positive value, a Gear Down movement. The
direction of travel may be reversed (Up Gear vs. Down
Gear) by changing values from negative (-) to positive
(+) (moving the point values above and below the
0% line).
8. Verify Operation. Power up the receiver, making sure
that the heli is elevated for the first time in case the
Gear is functioning in the opposite direction desired.
Move the Flight Mode and Throttle Hold switches,
and note the position (Up or Down) of the retracts. If
the retracts are functioning in the opposite direction
desired, then enter the mix again and change the value
from a + to a -, or a – to a + as needed and retest.
Set the points initially to the following values.
Point-0
-0%
Point-1
+80% (Normal Mode, Gear Down)
Point-2
-80% (Stunt 1, Gear Up)
Point-3
-80% (Stunt 2, Gear Up)
Point-4
INH (Stunt 3 if Activated)
Point-5
INH (Stunt 4 if Activated)
Point-6
+80% (Throttle Hold, Gear Down)
7. EXP (Expo). With this mixing example, it is not
necessary to activate the Expo option.
H45
Fail Safe- PCM Fail Safe Function
Fail Safe is available only when SPCM has been selected
as the Modulation Type in the System Menu. Obviously,
the receiver must be of the PCM variety, as Fail Safe does
not function in the PPM/FM mode.
When interference occurs on the frequency of operation,
PCM receivers do not pass the interference on to the
servos. Instead, the receiver commands the servos to hold
their last good position or to move to a pre-determined
position. Both options exist for each channel/servo and
the settings are adjustable in the Fail Safe function.
Typically, it is a good idea to designate all channels as
HOLD, except for the throttle—it should be commanded
to assume a Fail Safe position that corresponds to a
position between idle and ¼ throttle. In this configuration
the helicopter will continue to do whatever it was
doing before the interference occurred, except the
throttle will reduce momentarily, alerting you to a
potential RF issue. The servos will continue to hold their
last position and the throttle will remain at the set Fail
Safe position until the interference subsides, at which
time normal operation is resumed.
[Fail Safe]��
�
More often than not, the pilot will not realize the
system went into Fail Safe except for hearing the
throttle momentarily reduce rpm. This is also a good
configuration if interference is encountered while the
helicopter is on the ground because the throttle will be
lowered, reducing the chances of the helicopter causing
injury. In the event that the interference does not subside,
it is better for the helicopter to crash with the engine at a
lower throttle setting than at a higher throttle setting.
1. Access the Fail Safe function by highlighting and
selecting Fail Safe in the FUNCTION LIST.
�
�
MODEL 3
THR AIL ELE RUD GER PIT AX2 AX3
F.S.
HOLD
MEMO
Push MEMORY
Pos.-168
AX4=HOLD
2. Highlight and select THR, moving its indicator from the
HOLD position to the F.S. (Fail Safe) position. This
instructs the Fail Safe function to move the throttle
servo to a pre-determined position when the receiver
detects interference.
3. Press the CLR button next to MEMO to the left of the
display. This memorizes the throttle position of the
engine. Whenever the RX detects interference it will
move the throttle to this position. The remainder of the
servos will hold their last good position.
Note: If a form of CCPM mixing has been selected,
channel naming will vary.
H46
Trainer – Programmable Trainer System
The XP9303 contains a Trainer System that allows
the instructor to transfer some or all of the primary
flight control functions (Throttle, Aileron, Elevator and
Rudder) to the student. It also allows for indicating if
the transmitter (TX) is to be the Master (controlled by
the instructor) or Slave (controlled by the student). The
Trainer (TRN) switch is used to transfer control to the
student when the XP9303 is being used as the Master/
Instructor transmitter.
1. Connect the Trainer cord between the Master and
Slave transmitters. Turn the power on to the Master
transmitter (the Slave TX remains powered off and can
even have the module removed).
2. Make sure the Slave TX is in the PPM/FM modulation
mode. See MODULAT in the SYSTEM Menu if the
Slave TX is a XP9303 or refer to the owner’s manual if
the TX is not an XP9303.
3. Highlight and select Trainer in the FUNCTION LIST
to obtain the Trainer Display.
XP9303 USED AS MASTER (INSTRUCTOR) – (Trainer System)
4. If the XP9303 is being used as the Master TX (the TX
operated by the instructor), select the channel(s) that
are to be operated by the Slave TX (TX operated by the
student) when the trainer switch is depressed.
[Trainer]
MASTER�
�
NORMAL T.
ch THRO AILE
SLAV
MAST
When all channel selectors are in the MAST position,
NORMAL appears on the display and all 4 channels
are transferred to the student when the trainer
switch is depressed.
ELEV
RUDD
If only certain channels are to be transferred to the
student, highlight and select the channels that are to be
transferred, moving the indicator for these channels to
the SLAV position for these channels. When less than all
channels are selected as SLAV, PROGRAM T appears on
the display indicating that the Trainer System has been
programmed to transfer only selected channels.
The XP9303 is now ready to be used as the Master or
instructor TX. Pull the TRN switch forward to transfer
control to the student. Control will remain transferred until
the TRN switch is released.
H47
XP9303 USED AS SLAVE (STUDENT) – (Trainer System)
5. If the XP9303 is to be used as the Slave TX (TX used
by the student), be sure that the currently selected
model is set to PPM Modulation (see MODULAT in
the SYSTEM Menu if the Slave TX is a XP9303).
[Trainer]
SLAVE��
Connect DSC
Highlight and select MASTER and the display will switch
to SLAVE. A message will appear instructing to Connect
DSC & POWER off. Make sure the TX power switch
is in the OFF position and the DSC cord is connected
between the 2 transmitters.
The XP9303 is now ready to be used as the Slave
or student TX.
H48
&
POWER off
Timer – Timer System
The XP9303 contains a Timer System that contains two
timers. One is an integrated timer that keeps track of
total TX-on time for the model and it is displayed on
the Main display. The other timer can be configured as
a Countdown timer or as a Stopwatch. This timer also
appears on the Main display when active and can be
started, stopped and reset from the Main display. It is a
good idea to use the Countdown timer as a reminder that
it is time to land so as not to run out of fuel.
[TIMER]�
TIMER
�
�
1. To configure the timer as a Countdown timer, highlight
and select Timer in the FUNCTION LIST to obtain
the Timer display.
�
�
MODEL 3
INTEG-T
DOWN-T
10:00
2:27
Highlight and select INH under TIMER and then select
DOWN-T. Use the Selector to set the countdown start
time. Once the timer is set, TIM will appear on the Main
display in the lower left corner. Pressing the button next to
TIM on the Main display starts and stops the timer while
pressing the button next to CLR resets the time to the
programmed value.
2. To Reset the Integrated Timer, highlight and select the
time under INTEG-T and Push [CLR]=0:00 appears
on the display. Press the CLR button to the left of the
display to reset the integrated timer.
H49
MONITOR- SERVO MONITOR
The Servo Monitor function displays each channel and
shows the movement of channels when sticks, levers
and switches are moved. It renames channels according
to special assignments to assist in identifying what is
moving. For instance, when 120 CCPM Swashplate Type
is selected, the Servo Monitor will display CH-2, CH-3,
[MONITOR]
MONI
THRO
AILE
ELEV
RUDD
1. To access the Monitor function, highlight and select
MONITOR in the FUNCTION LIST to obtain the
Monitor display.
2. The default display (MONI) shows the settings of
all digital trims. To view the Monitor display of all
channels, highlight and select MONI. View the display
while moving sticks, switches and levers to see the
movements of various channels.
H50
and CH-6. It is a handy way to determine what channels
are mixed with other channels and to verify programming
when the helicopter is not at hand. The Monitor function
also displays the current value of all digital trims.
GEAR
PIT.
AUX3
AUX4
3. To view the Digital Trim values and Hover Pitch (HOV
P) and Hover Throttle (HOV T) Lever values, Highlight
MONI with the Selector and press. The word MONI
will change to TRIM to show the trim values for these
levers. To move back to the Channels display, press
TRIM to return to MONI and the servo travel and
output positions will be displayed once again.
Note: If a form of CCPM mixing has been selected,
channel naming will vary.
Servo Precautions
• Do not lubricate servo gears or motors.
• Do not overload retract servos during retracted or
extended conditions.
Make sure they are able to travel their full
deflection. Overloading or stalling a servo can
cause excessive current drain.
• Make sure all servos move freely through their
rotations and no linkages hang up or bind. A
binding control linkage can cause a servo to draw
excessive current. A stalled servo can drain a
battery pack in a matter of minutes.
• Correct any control surface “buzz” or “flutter” as
soon as it is noticed in flight, as this condition can
destroy the feedback potentiometer in the servo. It
may be extremely dangerous to ignore such “buzz”
or “flutter.”
• Use the supplied rubber grommets and brass servo
eyelets when mounting your servos. Do not overtighten the servo mounting screws, as this negates
the dampening effect of the rubber grommets.
• Ensure the servo horn is securely fastened
to the servo. Use only the JR® servo arm
screws provided; the size is different from other
manufacturers.
• Discontinue to use servo arms when they become
“yellowed” or discolored. Such servo arms may be
brittle and can snap at any time, possibly causing
the aircraft to crash.
• Check all related mounting screws and linkages
frequently. Aircraft often vibrate, causing linkages
and screws to loosen.
General notes
Radio controlled models are a great source of pleasure.
Unfortunately, they can also pose a potential hazard if not
operated and maintained properly.
It is imperative to install your radio control system
correctly. Additionally, your level of piloting competency
must be high enough to ensure that you are able to
control your aircraft under all conditions. If you are a
newcomer to radio controlled flying, please seek help
from an experienced pilot or your local hobby shop.
Safety Do’s and Don’ts for Pilots
• Ensure your batteries have been properly charged
prior to initial flight.
• Keep track of the time the system is turned on so
you will know how long you can safely operate
your system.
• Perform a ground range check prior to the initial
flight of the day. See the “Daily Flight Checks
Section” for information.
• Check all control surfaces prior to each takeoff.
• Do not fly during adverse weather conditions.
Poor visibility can cause disorientation and loss
of control of your aircraft. Strong winds can cause
similar problems.
• Do not fly unless your frequency is clear.
Warning: Only one transmitter at a time can operate
on a given frequency. If you turn on your transmitter
while someone else is operating a model on your
frequency, both pilots will lose control of their
models. Only one person can use a given frequency
at a time. It does not matter if it is AM, FM or
PCM—only one frequency at a time.
• Do not point the transmitter antenna directly toward the
model. The radiation pattern from the tip of the antenna is
inherently low.
• Do not take chances. If at any time during flight
you observe any erratic or abnormal operation, and
immediately and do not resume flight until the cause of
the problem has been ascertained and corrected. Safety
can never be taken lightly.
• Use frequency flags.
• Do not fly your model near spectators, parking
areas or any other area that could result in injury
to people or damage of property.
I1
Federal Aviation Administration
1. Purpose
This advisory outlines safety standards for operations of
model aircraft. We encourage voluntary compliance with
these standards.
2. Background
Attention has been drawn to the increase in model
aircraft operation. There is a need for added caution when
operating free flight and radio controlled craft in order
to avoid creating a noise nuisance or a potential hazard
to full-scale aircraft and persons and/or property on the
surface.
3. Operating Standards
Modelers generally are concerned with safety and exercise
good judgment when flying model aircraft. However, in
the interest of safer skies, we encourage operators of
radio controlled and free flight models to comply with the
following standards:
a. Exercise vigilance in locating full-scale aircraft
(get help if possible) so as not to create a
collision hazard.
b. Select an operating site at sufficient distance
from populated areas so you do not create a
noise problem or a potential hazard.
c. Do not fly higher than 400 feet above the
surface.
d. Always operate more than three miles from the
boundary of an airport unless you are given
permission to be closer by the appropriate air
traffic control facility in the case of an airport for
which a control zone has been designated or by
the airport manager in the case of other airports.
e. Do not hesitate to ask for assistance in
complying with these guidelines at the airport
traffic control tower or air route traffic control
center nearest the site of your proposed
operation.
Information Provided By:
Director, Air Traffic Service Federal Aviation
Administration, Washington, D.C.
Daily Flight Checks
1. Check the battery voltage on both the transmitter and
the receiver battery packs. Do not fly below 9.0V on the
transmitter or below 4.7V on the receiver. To do so can
crash your aircraft.
Note: When you check these batteries, ensure that
you have the polarities correct on your expanded
scale voltmeter.
2. Check all hardware (linkages, screws, nuts, and bolts)
prior to each day’s flight. Be sure that binding does not
occur and that all parts are is properly secured.
3. Ensure that all surfaces are moving in the proper
manner.
4. Perform a ground range check before each day’s flying
session. The range check should be as follows:
• Do not extend the transmitter antenna at this time.
Turn the transmitter “on.”
• Turn the model “on.”
• Slowly walk away from the model while moving
the control surfaces. The aircraft should function
properly at a distance of 60–75 feet.
• For PCM Only: With the throttle fail safe preset to
idle, bring the throttle slightly above idle. Walk
away until the throttle drops to idle. This will be
the distance of the range check.
5. Prior to starting your aircraft, turn off your transmitter,
then turn it back on. Do this each time you start your
aircraft. If any critical switches are on without your
knowledge, the transmitter alarm will warn you at this
time.
6. Check that all trim levers are in the proper location.
7. All servo pigtails and switch harness plugs should
be secured in the receiver. Make sure that the switch
harness moves freely in both directions.
I2
Frequency Chart
72 MHz requires no special license to operate.
Low Band 72 MHz
High Band 72 MHz
Ch.No.
Frequency
Ch.No.
Frequency
11
72.010
36
72.510
12
72.030
37
72.530
13
72.050
38
72.550
14
72.070
39
72.570
15
72.090
40
72.590
16
72.110
41
72.610
17
72.130
42
72.630
18
72.150
43
72.650
19
72.170
44
72.670
20
72.190
45
72.690
21
72.210
46
72.710
22
72.230
47
72.730
23
72.250
48
72.750
24
72.270
49
72.770
25
72.290
50
72.790
26
72.310
51
72.810
27
72.330
52
72.830
28
72.350
53
72.850
29
72.370
54
72.870
30
72.390
55
72.890
31
72.410
56
72.910
32
72.430
57
72.930
33
72.450
58
72.950
34
72.470
59
72.970
35
72.490
60
72.990
Transmitter Crystal Replacement Notice:
The Federal Communications Commission (FCC) requires
that changes in transmitter frequency must be performed
only by an authorized service technician (Horizon Service
Center).
Any transmitter frequency changes made by a noncertified technician may result in a violation of FCC rules.
Channels 12–14 are not available through JR®.
I3
Warranty Information
Important: Be sure to keep your original dated sales
receipt, as you will be required to provide proof-of purchase date for the equipment to be serviced under
warranty.
Warranty Coverage
Your new JR® Remote Control Radio System is warranted
to the original purchaser against manufacturer defects in
material and workmanship for an unprecedented 3 years
from the date of purchase. During this period, Horizon
Service Center will repair or replace, at our discretion, any
component that is found to be factory defective at no cost
to the purchaser. This warranty is limited to the original
purchaser of the unit and is not transferable.
This warranty does not apply to any unit that has been
improperly installed, mishandled, abused or damaged in
a crash, or to any unit that has been repaired or altered
by any unauthorized agencies. Under no circumstances
will the buyer be entitled to consequential or incidental
damages. This limited warranty gives you specific legal
rights; you also have other rights, which may vary from
state to state. As with all fine electronic equipment, do
not subject your radio system to extreme temperatures,
humidity or moisture. Do not leave it in direct sunlight for
long periods of time.
Repair Service Directions
In the event that your JR radio needs service, please
follow the instructions listed below.
1. Check all on/off switches to be sure they are off. This
will speed the repair process of checking battery
condition.
2. Return your system components only (transmitter,
receiver, servos, etc.). Do not return your system
installed in a model aircraft, car, boat, etc.
3. Preferably, use the original carton/packaging (molded
foam container), or equivalent, to ship your system. Do
not use the system carton itself as a shipping carton,
you should package the system carton within a sturdy
shipping container using additional packing material
to safeguard against damage during transit. Include
complete name and address information inside the
carton, as well as clearly writing it on the outer label/
return address area.
I4
4. Include detailed information explaining your operation
of the system and problem(s) encountered. Provide
an itemized list of equipment enclosed and identify
any particular area/function, which may better assist
our technicians in addressing your concerns. Within
your letter, advise us of the payment method you
prefer to use. Horizon Service Center accepts VISA
or MasterCard. Please include your card number and
expiration date. Date your correspondence, and be
sure your complete name and address appear on this
enclosure.
5. Include your name, mailing address, and a phone
number where you can be reached during the business
day.
Warranty Repairs
To receive warranty service, you must include a copy of
your original dated sales receipt to verify your proof-ofpurchase date. Providing that warranty conditions have
been met, your radio will be repaired without charge.
Normal Non-Warranty Repairs
Should your repair cost exceed 50% of the retail purchase
cost, you will be provided with an estimate advising you
of your options.
Mail your system to:
Horizon Service Center
4105 Fieldstone Road
Champaign, IL 61822
Phone: (217) 355-9511
Setup Sheet (Helicopter)
MODEL NO
MODEL NAME
REVERSE SW
SPOI
AIL1
ELEV
RUDD
AIL2
FLAP
AUX2
AUX3
NORM
REV
NORM
REV
NORM
REV
NORM
REV
NORM
REV
NORM
REV
NORM
REV
NORM
REV
+
%
L
%
U
%
L
%
L
%
U
%
+
%
+
%
-
%
R
%
D
%
R
%
R
%
D
%
-
%
-
%
SUB TRIM
TRAVEL ADJUST
FAIL SAFE (SPCM)
AILE
0
DUAL RATE/EXP
1
ELEV
RUDD
D/R
%
%
%
EXP
%
%
%
D/R
%
%
%
EXP
%
%
%
AUTO
D/R
INPUT
SEL
TRIM OFFSET
DIFFERENTIAL
PITCH
CURVE
ACT INH
POS1
ACT INH
POS2
ACT INH
AUX2
HOLD PIT INH
AUX3
ACT INH
GEAR
ACT INH
%
EXP
THRO
CURVE
POS0
N
ON/OFF
1
ON/OFF
2
ON/OFF
N
ON/OFF
1
ON/OFF
2
ON/OFF
3
ON/OFF
0
1
2
3
4
6
INH
GYRO
SENS
%
1
%
NORM
RUDD D/R
STNT
AUTO
HOLD
INVT
NORMAL
REVO
MIX
%
THRO HOLD
UP
%
DOWN
%
UP
%
DOWN
%
HOLD RUDD OFFSET
OFFSET
ACT INH
CHANNEL
STUNT
POS
ACT INH
PROGRAMMABLE
MIX
5
0
ACC MIX
%
%
SW
EXP
MIX1
ON/OFF
MIX1
ON/OFF
0
1
+POS
2
3
-POS
4
5
6
OFFSET
MIX1
MIX1
MIX1
MIX1
I5
© 2004, Horizon Hobby, Inc.
4105 Fieldstone Road
Champaign, IL 61822
(877) 504.0233
www.horizonhobby.com
H7011
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