JR XP7202 User manual

INSTRUCTION MANUAL FOR AIRPLANE
AND HELICOPTER
XP7202
7-CHANNEL COMPUTER RADIO SYSTEM
®

2XP7202 Instruction Manual
Section 1:
Using This Manual............................5
XP7202 Transmitter............................................... 5
R790 ScanSelect PCM Receiver.......................... 5
DS821 Servo ........................................................... 5
Section 2:
Component Specifications .............6
System Specications ............................................ 6
Included Accessories......................................... 6
Transmitter Specications.................................... 6
Servo Specications............................................... 7
Receiver Specications ......................................... 7
Charger Specications .......................................... 7
Airborne Battery Pack ......................................... 7
Section 3:
Battery Charging.............................8
Transmitter/Receiver............................................. 8
Transmitter Polarity........................................... 8
Charger .................................................................... 8
Section 4:
General Information .......................9
Control Stick Length Adjustment....................... 9
Control Stick Tension Adjustment...................... 9
Proper Direct Servo Connect
Hookup and Operation ............................... 10
Neck Strap Adjustment ...................................... 11
Base-Loaded Antenna.......................................... 11
Using the Synthesized Channel Selection....... 12
Changing the Frequency:................................12
Screen Contrast ................................................... 13
Advanced Digital Trims ....................................... 13
Installation Requirements................................... 14
Section 5:
Quick Start.................................... 15
Selecting a Channel.............................................. 15
To Select a Channel (Transmitter) ............... 15
Performing a Range Test ..................................... 16
To Select a Channel (Receiver)..................... 16
Section 5.1:
Airplane Quick Start.................... 17
Model Type Selection........................................... 17
Selecting Airplane Mode ..................................... 17
Servo Reversing.................................................... 18
Travel Adjust.......................................................... 19
Section 5.2: Helicopter Quick Start20
Model Type Selection........................................... 20
Selecting Helicopter Mode ................................ 20
Servo Reversing.................................................... 21
Travel Adjust.......................................................... 22
Pitch Curve............................................................ 23
Adjusting the Normal Pitch Curve.............. 23
Throttle Curve ..................................................... 24
Adjusting the Normal Throttle Curve ........ 24
Section 6:
Aircraft Programming Guide...... 25
Control Identication and Location - Airplane
Mode 2............................................................. 25
Throttle ALT.......................................................... 25
General Information............................................ 26
Key Input and Display Functions .................. 26
System Mode Flowchart.....................................27
To Enter the System Setup Mode ................ 27
To Exit the System Setup Mode ................... 27
Section 6.1:
System Mode Functions .............. 28
System Setup Mode.............................................28
To Enter System Setup List Mode................ 28
Function Mode...................................................... 29
To Enter the Function Mode......................... 29
Function Mode Flowchart.................................. 30
List Modes ............................................................. 31
To Enter the Function List Mode ................. 31
To Exit the Function Mode............................ 31
Model Select/Copy Function ............................. 32
To Enter the Model Select Function............32
To Enter the Copy Function.......................... 32
Model Name ......................................................... 33
To Enter the Model Name Function............ 33
Table of Contents

3
XP7202 Instruction Manual
Type Select Function ........................................... 34
To Enter the Type Select Mode.....................34
To Select a Model Type ................................... 34
To Enter the Modulation Function............... 35
To Select a Modulation Type.......................... 35
Modulation............................................................. 35
Model Reset and Integrated
Timer Reset .................................................... 37
To perform a DATA RESET or
Reset the Integrated Timer:...........................37
Trainer .................................................................... 38
To Enter the Trainer Mode ............................ 38
Throttle Recovery ............................................... 39
To Activate Throttle Recovery...................... 39
Input Select............................................................ 40
Wing Type .............................................................. 41
Normal ............................................................... 41
Flaperon Wing Type Selection ....................... 41
Delta Wing Type Selection ............................. 41
To Enter the Wing Type Function................. 41
To Select a Wing Type ..................................... 42
Synthesized Channel Select ............................... 43
To Select a Transmitter Channel................... 43
To Select a Receiver Channel........................44
Section 6.2:
Function Mode Functions............ 45
Dual Rate & Exponential .................................... 45
To Adjust the Dual Rate ................................. 45
To Adjust the Exponential..............................46
Reverse Switch ..................................................... 47
To Access the Reverse Switch Mode........... 47
Sub-Trim................................................................. 48
To Access the Sub-Trim Function................. 48
Travel Adjust.......................................................... 49
To Access the Travel Adjust Function .......... 49
Elevator-to-Flap Mixing....................................... 50
To Access the Elevator-to-Flap Mixing ........ 50
Aileron-to-Rudder Mixing.................................. 51
To Access the Aileron-to-Rudder
Mix Function ..................................................... 51
To Adjust the Mix Value .................................. 51
To Assign a Switch............................................ 51
Flap System............................................................ 52
Accessing and Utilizing the Flap System ..... 52
Automatic Landing............................................... 53
To Activate the Automatic
Landing feature:................................................. 53
Differential Aileron Mixing ................................. 54
To Access the Differential Aileron Mixing
Function ............................................................. 54
Programmable Mixing 1-6 .................................. 55
Assigning Channels .......................................... 55
Assigning Mixing Values................................... 56
Assigning an Offset .......................................... 57
Fail-Safe................................................................... 58
Accessing the Fail-Safe Function................... 58
Servo Monitor ...................................................... 59
Setup Sheet (Aircraft) ......................................... 60
Section 7:
Helicopter Programming Guide. 61
Transmitter Controls .......................................... 61
Control Identication and Location ............ 61
Warning Screen for Throttle Hold/
Stunt Mode ..................................................... 62
Gyro Connections ............................................... 62
General Information............................................ 63
Key Input and Display Functions .................. 63
Section 7.1:
System Setup................................ 64
To Enter the System Setup Mode ................ 64
To Exit the System Setup Mode ................... 64
Model Select/Copy............................................... 65
To Enter the Model Select Function............65
To Enter the Copy Function.......................... 65
To Enter the Copy Function.......................... 66
Model Name ......................................................... 66
To Enter the Model Name Function............ 66
Type Select Function ........................................... 67
To Enter the Type Select Mode.....................67
To Select a Model Type ................................... 67
Modulation............................................................. 68
To Enter the Modulation Function............... 68
To Select a Modulation Type.......................... 68
Model Reset/Integrated timer...........................70
To Reset a Model............................................. 70
To Reset the Integrated Timer...................... 70
Table of Contents

4XP7202 Instruction Manual
Trainer .................................................................... 71
To Enter the Trainer Mode ............................ 71
Throttle Recovery ............................................... 72
To Activate the Throttle
Recovery Function........................................... 72
Input Select............................................................ 73
To Select the Input Switch for
the AUX2 Channel .......................................... 73
Swash Type............................................................. 74
Accessing the Swashplate Types.................... 74
Synthesized Channel............................................ 75
To Select a Channel......................................... 75
Function Mode Flowchart.................................. 76
To Enter the Function Mode......................... 77
To Exit the Function Mode............................ 77
Normal Display..................................................... 78
List Modes ............................................................. 78
Section 7.2:
Function Mode Functions............ 79
Dual Rate & Exponential .................................... 79
To Adjust the Dual Rate ................................. 79
To Adjust the Exponential..............................80
Auto Dual Rate EXP ........................................... 81
To Adjust the Auto Dual Rate ....................... 81
Reverse Switch ..................................................... 82
Accessing the Reverse
Switch Function................................................ 82
Sub-Trim................................................................. 83
To Access the Sub-Trim Function................. 83
Travel Adjust.......................................................... 84
To Access the Travel Adjust Function .......... 84
Swashplate Mixing................................................ 85
Accessing the Swashplate Mix Function ..... 85
Throttle Hold........................................................ 86
To Access the Throttle Hold Function........ 86
Throttle Curve ..................................................... 87
Throttle Trim Setting....................................... 88
Hovering Throttle Rocker Setting................88
Exponential Throttle Curve Function.......... 88
Idle Up................................................................ 88
Pitch Curve............................................................ 89
Hovering Pitch Rocker ................................... 89
Pitch Trim rocker.............................................. 89
Revolution Mixing (only used with
non heading hold gyros) .............................. 90
Setting Up Revolution Mixing........................90
Gyro Sensing ......................................................... 91
Manual Gyro Sensitivity Adjustment............ 91
Automatic Gyro Sensitivity
Adjustment........................................................ 91
Programmable Mixing 1-3 .................................. 92
Assigning Channels .......................................... 92
Assigning Mixing Values................................... 93
Assigning an Offset .......................................... 94
Fail-Safe................................................................... 95
Accessing the Fail-Safe Function................... 95
Servo Monitor ...................................................... 96
Setup Sheet (Helicopter).................................... 97
Section 8:
General Information .................... 99
Servo Precautions ................................................ 99
General Notes...................................................... 99
Safety Do’s and Don’ts for Pilots ................. 99
Federal Aviation Administration......................100
Purpose ............................................................100
Background......................................................100
Operating Standards .....................................100
Daily Flight Checks ............................................100
Frequency Chart ................................................101
Section 9:
Warranty Information ............... 102
Limited Warranty Period..................................102
Limited Warranty & Limits of Liability...........102
Safety Precautions..............................................102
Questions,Assistance, and Repairs ................102
Questions or Assistance...................................103
Inspection or Repairs........................................103
Warranty Inspection and Repairs...................103
Non-Warranty Repairs.....................................103
Table of Contents

5
XP7202 Instruction Manual
manual you will find the specifications for the transmitter
and its included accessories. In addition, guidelines
for installation have been included. 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 also record it on a copy of the data
sheet provided. If you want to make changes to the current
settings, this step will save you a great deal of time.
For your convenience, this manual is arranged with
separate sections for airplane and helicopter software
functions: Airplane Programming: Pages 25 through
65 Helicopter Programming: Pages 66 through 102
Programming functions are discussed in the same order
that they appear on the radio. An explanation of the
use and purpose of each feature is provided, followed
by an illustration of its LCD display. In the front of this
Section 1: Using This Manual
XP7202 Transmitter
The XP7202 synthesized transmitter allows onscreen
channel selection of channels 15 through channel 60 via
the computer. The system prevents accidental turn-ons
by requiring acknowledgement of the selected channel
before a signal is transmitted. The system incorporates a
hi-resolution dot matrix LCD display offering sophisticated
graphics that are easy to read and understand. Two-model
type programming offers airplane and helicopter pilots
programming options that will meet the most demanding
modelers’ needs. Control sticks are adjustable for spring
tension and length. Twenty-model memory storage
capacity allows programming for up to twenty separate
helicopters or airplanes or you can program more than one
setup for a single aircraft. Two versions of the transmitter
are available: Airplane and Helicopter. The switch
positions are optimized for each model type, however, the
programming is identical in both versions.
R790 ScanSelect PCM Receiver
The R790 ScanSelect™ is a high-performance synthesized,
single-conversion receiver with 10KHz super narrow band
ABC&W circuitry.
The ScanSelect synthesized frequency selections system
allows access to the user of channels 15–60 without
changing any crystals.
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 R790’s Slimline design allows it to fit into most model
applications.
DS821 Servo
The DS821 sport digital servo features:
• Ball bearing outshaft support
• A zero deadband amplifier
• New improved plastic gear material
• Improved accuracy and higher holding torque,
characteristic of digital servos
• Low current drain
• 3-pole ferrite cored motor

6XP7202 Instruction Manual
System Specifications
Type Aircraft Helicopter
System Name XP-7202A XP-7202H
Transmitter Body NET-K237US NET-K237US
Receiver NER-790 NER-790
Charger AD35M05 AD35M05
Airborne Battery 1100mAh 1100mAh
Servos NES-821x4 NES-821x4
Included Accessories
Standard Switch Standard Switch
12” Aileron Ext. 12” Aileron Ext.
Charge Jack Charge Jack
Servo Accessories Servo Accessories
Hex Wrench Hex Wrench
Instruction Instruction
Manual Manual
Transmitter Specifications
Type Aircraft Helicopter
Model Number NET-G127US NET-G127US
Encoder 7-Channel 7-Channel
Computer Computer
System System
RF Module 72MHz 72MHz
Modulation PCM (S or Z) PCM (S or Z)
or PPM or PPM
Output Power Approximately Approximately
750mW 750mW
Current Drain 200mA 200mA
(70mA w/DSC) (70mA w/DSC)
Power Source 1.2Vx8 Ni-MH 1.2Vx8 Ni-MH
(9.6V) 1500mAh (9.6V) 1500mAh
Output Pulse 1000–2000 1000–2000
(1500 Neutral) (1500 Neutral)
Section 2: Component Specifications

7
XP7202 Instruction Manual
Servo Specifications
Type DS821
Torque (oz/in) 72.0
Speed (sec/60 deg) .19
Weight (oz) 1.50
Size (in) 1.50 x 0.74 x 1.47
(L x W x H)
BB Single
Motor 3-pole ferrite
Receiver Specifications
Type PCM
Model Number NER-790
Type S-PCM 7-channel ABC&W / micro
Frequency 72MHz
Sensitivity (Microseconds) 5μS minimum
Selectivity 8KHz/5dB
Weight (oz) 1.5
Receiver Antenna 39” for all aircraft frequencies
Charger Specifications
Type Aircraft Helicopter
Model Number AD35M05 AD35M05
Input Voltage AC 100–120V AC 100–120V
Output Current 110mA Rx 110mA Tx 110mA Rx 110mA Tx
Charging Time 15 hours 15 hours
Airborne Battery Pack
Type Aircraft Helicopter
Model Number B1100mAh B1100mAh
Voltage 4.8V 4.8V
Size (in) (W x L x H) 2.24 x 0.63 x 1.70 2.24 x 0.63 x 1.70
Weight (oz) 4.9 4.9

8XP7202 Instruction Manual
NOTE: It is imperative that you fully charge both the
transmitter and the receiver battery packs prior to
each flying session. To do so, using the included wall
charger, leave the charger and batteries connected
overnight (16 hours). The first charge should be
approximately 20–24 hours in order to fully charge
both battery packs to peak capacity.
Section 3: Battery Charging
Transmitter/Receiver
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
The charger supplied with this system is designed
to recharge your batteries at a rate of 110mA for the
transmitter and 110mA for the receiver battery pack.
Transmitter Polarity
The center pin on all JR®transmitters 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
may 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.
Charger
The pilot lamps should always be ON during the charging
operation. If they’re not, check to make sure that both the
transmitter and receiver are switched OFF. Do not use
this charger for equipment other than JR. The charging
plug polarity may not be the same and equipment damage
can result. 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

9
XP7202 Instruction Manual
The XP7202 allows you to adjust the control stick’s length.
Loosen or tighten to adjust the stick length; use the 2mm
Allen wrench (supplied with your XP7202 transmitter) to
unlock the setscrew. 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 setscrew. If you desire longer sticks, JR®offers a
longer stick tip (JRPA047) that is approximately one inch
longer than the standard stick. This stick is available from
your local JR dealer.
Section 4: General Information
Control Stick Length Adjustment
LOOSEN
TIGHTEN
SETSCREW
Control Stick Tension Adjustment
NOTE: Remove the transmitter Ni-MH battery, and
six (6) transmitter back cover screws as shown on the
previous page. Remove the transmitter back, being
careful not to cause damage to any components
Adjust each stick tension screw for the desired tension
(counterclockwise to loosen stick feel, clockwise to tighten
stick feel).
ELEVATOR TENSION
SCREW
AILERON TENSION
SCREW
RUDDER TENSION
SCREW
THROTTLE TENSION
SCREW

10 XP7202 Instruction Manual
1. Leave the transmitter power switch in the OFF position.
The transmitter will not transmit radio frequency (RF) in
this position.
2. Plug the DSC cord (optional 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. Turn the switch harness to the ON
position.
NOTE: The DSC function will only operate with the
JRPA001 Deluxe Switch Harness, or the JRPA004
Charge Switch. 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 function allows you to make adjustments
to your model without transmitting any radio signals.
Therefore, if another pilot is flying on the same
frequency, you can adjust your model’s radio setting
and not interfere with the other pilot’s aircraft.
Proper Direct Servo Connect Hookup and Operation
A
B
C
2. The DSC enables you to operate the control surfaces
of your airplanes without drawing the fully operational
200mAh from your transmitter battery pack. Instead,
you will only draw 70mA when using the DSC function.
Note: Under no circumstances should you attempt to
fly your airplane with the DSC cord plugged in.
CHARGING JACK FOR
NI-CD BATTERY
A–Charge Cord/DSC Receptacle
B–Switch Harness Lead
C–Charge/DSC Cord
BATTERY COVER DSC/TRAINER JACK
CAUTION: THE BATTERY CONNECTOR
IS KEYED SO THAT IT CAN ONLY BE PLUGGED
IN ONE DIRECTION. DO NOT FORCE.