JR XP9303 User manual

INSTRUCTION MANUAL FOR SAILPLANE
XP9303
9-CHANNEL COMPUTER RADIO SYSTEM

Table of Contents
General Section
G2
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
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
Sailplane Section
G3
System Mode GLID Features ...................S-1
Function Mode GLID Features ................S-1
System Mode ........................................................S-2
System Mode ........................................................S-2
To enter System Mode– ................................S-2
Model Select .........................................................S-3
Model Name ........................................................S-3
Type Select ............................................................S-4
Model Reset .........................................................S-4
Modulation ............................................................S-5
TRANSFER a model from the XP9303 –
(Transfer function) ........................................S-6
TRANSFER – Transfer the model to another
transmitter or to DataSafe .........................S-6
TRANSFER a model to the XP9303 –
(Transfer function) ........................................S-7
Trim Step ...............................................................S-8
Device Select ........................................................S-9
Flight Modes .................................................. S-10
Activating and Assigning
Flight Modes ............................................... S-11
Activating and Assigning
Flight Modes (continued) ......................... S-12
Motor Function ................................................ S-12
Flap and AUX Functions ................................. S-13
Activating / Inhibiting Channels ................ S-13
Wing Type .......................................................... S-14
Function Mode ............................................. S-15
Function Mode (continued) ....................... S-16
Function Mode (continued) ....................... S-17
D/R & EXP –
Dual Rates and Exponential .................... S-18
REV.SW – Servo Reversing ............................ S-19
Sub Trim .............................................................. S-20
TRVL. ADJ - Travel Adjust ............................... S-21
Elevator-to-Flap Mix ........................................ S-22
Aileron-to-Flap Mix ......................................... S-23
Differential ......................................................... S-23
Camber Adjust .................................................. S-24
Camber Mix ...................................................... S-25
Aileron-to-Rudder Mix ................................... S-26
Butterfly Mix (Landing Flaps) ......................... S-27
Flap Rate ............................................................ S-28
Motor Hold ....................................................... S-29
Programmable Curve Mix 1 .......................... S-30
Timer .................................................................. S-31
PROG MIX -
Programmable Mixers .............................. S-32
MULTI-POINT
Programmable Mixers .............................. S-36
Monitor .............................................................. S-39
Programming a 6-Channel Sailplane by
Engineering Manager John Adams ......S-40
Step #1 Servo Assignment ............................. S-42
Channel Assignment .................................... S-42
Step #2- System Mode .................................... S-43
Step #3 Selecting a Model Memory ............. S-43
Step #4 Selecting Model Type ....................... S-44
Step #5 Naming a Model ................................ S-44
Step #6 Selecting the Modulation ................ S-45
Step #7 Turning Off the
Spoiler Stick Trim ....................................... S-45
Step #8 Establishing Flight Modes ................ S-46
Step #9 Wing and Tail Type Select ................ S-46
Step #10 Entering FUNC.LIST ...................... S-47
Step #11 Servo Reversing .............................. S-47
Step #12 Sub Trim ............................................ S-48
Step #13 Travel Adjust ..................................... S-49
Step #14 Butterfly (Landing Flaps) ............... S-49
Step #15 Spoiler to Elevator
Curve Mix (Programmable Mix 1) ......... S-50
Setting-up Flight Modes .............................. S-50
Launch Mode Setup ..................................... S-50
Step #16 Launch Pre-sets .............................. S-51
Step #17 Dual Rate and Exponential ........... S-52
Step #18 Elevator-to-Flap Mix ...................... S-52

Table of Contents
Sailplane Section (continued)
Information Section
G4
Step #19 Aileron-to-Flap ................................ S-53
Step #20 Aileron Differential ......................... S-53
Step #21 Flap Rate, Camber Mix
and Camber Adjust ................................... S-54
Flap Rate ........................................................ S-54
Camber Adjust .............................................. S-55
Camber Mix .................................................. S-55
Step #22- Aileron-to-Rudder Mix ................ S-56
Setting up Cruise Mode .............................. S-56
Step #23 Cruise Pre-sets ............................... S-57
Step #24 Dual Rate and Exponential ........... S-57
Step #25 Elevator-to-Flap Mix ...................... S-58
Step #26 Aileron-to-Flap ................................ S-59
Step #27 Aileron Differential ......................... S-59
Step #28 Flap Rate, Camber Mix
and Camber Adjust ................................... S-60
Camber Mix .................................................. S-60
Flap Rate ........................................................ S-60
Camber Adjust .............................................. S-61
Step #29- Aileron-to-Rudder Mix ................ S-62
Setting Up Land Mode ................................ S-62
Step #30 Land Pre-sets ................................... S-63
Step #31 Dual Rate
and Exponential ......................................... S-64
Step #32 Elevator-to-Flap Mix ...................... S-65
Step #33 Aileron-to-Flap ................................ S-65
Step #34 Aileron Differential ......................... S-65
Step #35 Flap Rate, Camber Mix
and Camber Adjust ................................... S-66
Camber Mix .................................................. S-66
Flap Rate ........................................................ S-66
Camber Adjust .............................................. S-67
Step #36- Aileron-to-Rudder Mix ................ S-68
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

Section 1: Using this manual
R649 Receiver
R770 Receiver
Section 2: Features
G5
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.
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 (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 (Advanced Air, Basic & Advanced
Helicopter Systems)
The R649 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 R649’s credit card size design allows it to fit into most
model applications.

Servo Specifications
Transmitter Specifications
Component Specifications
Section 3: Component Specifications
G6
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
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)
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)
Accessories 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

Receiver Specifications
Charger Specifications
G7
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
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

Transmitter/Receiver
Battery Charging
G8
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.
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.
CENTER
PIN IS
NEGATIVE
OUTSIDE IS POSITIVE
CHARGER PIGTAIL FOR RECEIVER
CHARGER PIGTAIL FOR TRANSMITTER
BLACK TO POSITIVE
RED TO NEGATIVE
RIGHT SIDE OF TRANSMITTER
RED–POSITIVE / BROWN–NEGATIVE / ORANGE–SIGNAL

XP9303 Transmitter Features (Front)
G9
Trainer Button
Gear Switch
Flap Switch
Elevator
Dual Rate
Flap Trim
Lever
AUX4/
Rudder Dual
Rate
Aux Trim
Aileron
Dual Rate
AUX2
Mix Switch
Lever
Elevator/
Aileron Stick
Throttle/
Rudder Stick
Rudder Trim
Throttle Trim
List Button
Enter Button
Clear Button
Power Switch
Aileron Trim
Elevator Trim
Rolling Selector
LCD Display

XP9303 Transmitter Features (Rear)
G10
Battery Cover
CAUTION: THE BATTERY CONNECTION IS KEYED SO THAT IT CAN ONLY
BE PLUGGED IN ONE DIRECTION. DO NOT FORCE

XP9303 Transmitter Features (Internal)
Control Stick Tension Adjustment
G11
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.
ELEVATOR TENSION SCREW
AILERON TENSION SCREW
THROTTLE TENSION SCREW
RUDDER TENSION SCREW

Control Stick Length
G12
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.
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.
LOOSEN
TIGHTEN
SET SCREW

Direct Servo Control (DSC)
G13
For proper DSC hook-up and operation:
1. Leave the transmitter power switch in the Off position.
The transmitter will not transmit any radio frequency
(RF) in this position.
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.
Why you should use the DSC function:
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. 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�
B�
C�
A—Charge Cord/DSC Receptacle
B—Switch Harness Lead
C—Charger/DSC Cord
JRPA004 Charge Switch

Neckstrap Attachment
Frequency Notes/Aircraft Only Frequencies
Base Loaded Antenna
G14
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 non-
authorized 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:
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.
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.
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.

Installation Requirements
Flash Memory
Connections:
Battery Alarm and Display
G15
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.
All preprogrammed data is protected by a flash memory
that guards against main transmitter battery failure.
Note Separate drawings for Acro, Sailplane and
Helicopter with typical plug order, switch location,
and battery pack connections.
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.
Servo Mounting Tab
Screw
Rubber Grommet
Brass Eyelet

S1
Sailplane- GLID Mode
The GLID mode is intended for multi-function sailplanes.
The program software was developed by some of the
world’s leading sailplane pilots and offers a level of
sophistication not found in any other sailplane system.
Up to 5 flight modes are available, each allowing virtually
every parameter to be individually adjusted. Active
flight mode digital trims allow in-flight adjustments of
camber, elevator, rudder and aileron. Trim settings are
automatically stored and recalled in each individual
flight mode. Following is a list of sailplane specific
programming menus and their primary functions:
SYSTEM MODE GLID FEATURES
• Trim Step–Allows the trim authority to be adjusted
or even turned off.
• Device Select–Flight modes, switch and lever
locations and functions are programmed
in this menu.
• Wing Type–Allows the selection of V-tail and dual
or single flap servos.
FUNCTION MODE GLID FEATURES
• Elevator-to-Flap–Allows two values of elevator-
to-flap mixing with independent up and down
adjustments. Offset allows snap flaps to be
programmed and the mix can be automatically
selected in any desired flight mode or via several
switch options.
• Aileron-to-Flap–Allows two values of aileron-
to-flap mixing with independent right and left
adjustment. This mix can be automatically selected
in any desired flight mode or via several switch
options.
• Aileron and Flap Differential–Separate differential
values (5) are available in each flight mode
including reverse differential (for landing). Aileron
and flap differentials are independently adjustable.
• Camber Adjust Delay–A delay of up to 2 seconds
can be programmed for each individual flight
mode such that when switching flight modes, the
camber and elevator presets transition smoothly. A
break-off delay allows an elevator stick position to
be used to override the delay, useful during launch
when switching from launch to cruise mode for a
zoom launch.
• Camber Mix–Allows individual up and down
flaperon and elevator values for each of the 5 flight
modes to be adjusted via the side lever.
• Aileron-to-Rudder Mix–Features separate right
and left mix values for each of the 5 available
flight modes.
• The Butterfly Menu–Provides 2 settings for flaps,
flaperons and elevator values operated using the
spoiler stick. Each value can be selected via flight
modes or several available switches.
• Flap Rate–Allows the flap camber up and down to
be adjusted independently in each of the 5 flight
modes via the side lever(s).
• Programmable Mix 1–Spoiler-to-elevator curve mix
allows non- linear elevator compensation when
landing flap (butterfly/ crow) is deployed. A
6-point adjustable curve allows precise elevator
input throughout flap travel avoiding unwanted
pitching during landings.
• 2 Timers–Are available and can be programmed as
count up or down, and are assignable to various
switches and buttons.
• Active Digital Flight Trims–Allow presets of
elevator, camber, rudder and aileron to be adjusted
in flight and are automatically stored and recalled
in each of the 5 flight modes.
Note: The following section contains in-depth
details regarding each of the available programming
functions. If you’re just getting started, you’ll
likely find it easier (and we recommend) using the
programming guide for 6 servo sailplanes on page
S40. This step-by-step guide leads you through a
typical 6-servo sailplane and even gives the key-
strokes necessary to set up a sailplane, including
flight modes, butterfly and side lever camber
adjustment. We recommend referring to the section
below when a more in-depth understanding of a
specific programming feature is desired.

System Mode
System Mode
Model Reset Pg. S4
Type Select Pg. S4
Info Display
Model Select Pg. S3
Model Name Pg. S3
Modulation Pg. S5
Transfer Pg. S6
Trim Step Pg. S8
Device Select Pg. S9
Wing Type Pg. S14
S2
System mode contains the foundational programming.
System mode screens include model name,
model reset, modulation, data transfer, etc.—functions
that are typically set once and then are seldom
changed or adjusted.
To enter System Mode–
Press ENT and hold while turning on the transmitter.
The screen should appear as follows.
System mode contains the follow screens:
INFO-DISP
Model SEL
MDL Name
Type SEL
MDL Reset
MODULAT.
TRANSFER
TRIM STEP
Devic. SEL
Wing TYPE
[SYSTEM M.]
TX 10.5v MODEL 1
SPCM Integ. 1:29
0 00
DISP
CONT
Select�� � 29 HELI� SPCM
� � � 30 HELI� SPCM
MODEL 1� MODEL 1 GLID� SPCM
� � � 2 ACRO� SPCM
� � � 3 GLID� SPCM
[Model SEL]
� MODEL 1� GLID <ZENITH 56> SPCM
[MDL Name]
[Type SEL]� � MODEL 1 GLID
GLID�� ACRO� � HELI
[Type SEL]� � MODEL 1 GLID
LST
NO
YES
MODEL 1� GLID�SPCM
Are you sure? Y/N
[MODULAT.]
MODEL 1� GLID
Modulation
SPCM PPM
[TRANSFER]
RECEIVE
MODEL 2 GLID SPCM
MODEL 1
Connect DSC & POWER off
[TRIM STEP]
SPOI 100%
AILE� 4
ELEV� 4
RUDD� 4
FPRN� 4
FLAP� 4
[Devic. SEL]
SPEED� LAUN
INH� INH MOTO�FLAP�AUX2�AUX3�AUX4
BTFL�FLAP�SPOI�AUX3�AUX4
SW� LEV� STK� LEV� SW
OUT: INH� ACT� ACT� INH� ACT
LST
[WING TYPE]
V-tail:
INH
DUAL FLAP
INH��AILE-FLAP
Trim INH

Model Select
Model Name
S3
Model select allows up to 30 different models to be stored
and selected.
Note: When setting up a new model it is
recommended that an unused model memory is
selected. If a current model memory is selected it’s
recommended that the model be reset to factory
default setting before programming the new model.
See model reset page S4.
1. In the SYSTEM Menu, highlight and select Model
SEL using the Selector.
2. Use the Selector to highlight and select the desired
model number to be used.
3. Return to the SYSTEM Menu by pressing the
LIST button.
The model name screen allows each model to be given
an eight digit name or number. This is convenient for
identifying a model or the channel number the model
is on. The model’s name will appear in the upper right
corner of the main info screen.
1. In the SYSTEM Menu, highlight and select MDL
Name using the Selector.
2. The cursor (indicates where the next character will be
placed) is positioned at the beginning of the model
name. Press the Selector to obtain a list of available
characters.
3. Highlight and select the desired character to form the
model name. After the character is selected, rotate
the Selector to position the cursor where the next
character is to be placed and press the Selector to
obtain the character list again. Repeat until the model
name is completed.
4. Return to the SYSTEM Menu by pressing the
LIST button.
Select�� � 29 HELI� SPCM
� � � 30 HELI� SPCM
MODEL 1� MODEL 1 GLID� SPCM
� � � 2 ACRO� SPCM
� � � 3 GLID� SPCM
[Model SEL]
� MODEL 1� GLID <ZENITH 56> SPCM
[MDL Name]

Type Select
Model Reset
S4
Type select allows the model type to be selected. Model
types include glider, acro or heli. Note: When changing
model types the programming information will be reset to
the factory default setting loosing the previous settings.
1. In the SYSTEM Menu, highlight and select Type SEL
using the Selector.
2. Highlight and select GLID using the Selector .
3. Return to the SYSTEM Menu by pressing the
LIST button.
Model Reset is used to return the program to the factory
default settings.
1. In the SYSTEM Menu, highlight and select MDL
Reset using the Selector.
2. Press the CLR button that is next to RES
on the display.
3. Press the lowermost button next to YES on the display
to reset all data for this model.
4. Return to the SYSTEM Menu by pressing the
LIST button.
[Type SEL]� � MODEL 1 GLID
GLID�� ACRO� � HELI
[Type SEL]� � MODEL 1 GLID
LST
NO
YES
MODEL 1� GLID�SPCM
Are you sure? Y/N

Modulation
S5
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 aircraft or
the system will not function.
Note: The XP9303 system is not designed for use
with “Z” PCM receivers.
1. In the SYSTEM Menu, highlight and select
MODULAT. using the Selector.
2. Highlight and select either SPCM or PPM to match the
receiver in the aircraft.
3. Return to the SYSTEM Menu by pressing the
LIST button.
[MODULAT.]
MODEL 1� GLID
Modulation
SPCM PPM