Section 1: Using the Manual ......................................................................................................................... G-9
Features ......................................................................................................................................................... G-9
Specications
................................................................................................................................................ G-9
Section 2: Transmitter and Receiver Specifications
................................................................................. G-9
JR X9503 Transmitter ..................................................................................................................................... G-9
JR R921 Receiver ..........................................................................................................................................G-10
Features .......................................................................................................................................................G-10
Specications ..............................................................................................................................................G-10
Section 3: Component Specifications
.......................................................................................................G-11
Servo Specications
...................................................................................................................................... G-11
Charger Specifications
.................................................................................................................................G-11
Airborne Battery Pack
.................................................................................................................................G-11
Airborne Battery Pack Specications ...................................................................................................G-11
Battery Charging
........................................................................................................................................... G-12
Transmitter/Receiver ....................................................................................................................................G-12
JR Transmitter Charging
...........................................................................................................................G-12
Using the Included Charger ....................................................................................................................G-12
X9503 2.4 Transmitter Features (Mode 2 Airplane Shown)
...............................................................G-13
X9503 2.4 Transmitter Features (Rear)
...................................................................................................G-14
Battery Cover
............................................................................................................................................ G-14
X9503 2.4 Transmitter Features (Internal)
.............................................................................................G-15
Control Stick Tension Adjustment .............................................................................................................G-15
Back of Transmitter (Mode 2)
................................................................................................................G-15
Advanced Digital Trims ................................................................................................................................G-16
Control Stick Length ....................................................................................................................................G-16
Neckstrap Attachment .................................................................................................................................G-16
Installing the Receiver .................................................................................................................................. G-17
Installing the JR R921 ...............................................................................................................................G-17
ModelMatch
....................................................................................................................................................G-18
Other Important Installation Tips
.........................................................................................................G-18
Binding
.............................................................................................................................................................G-19
How to Bind ...................................................................................................................................................G-19
Fail-Safe Functions .........................................................................................................................................G-20
SmartSafe ........................................................................................................................................................G-20
Receiver Power Only ...............................................................................................................................G-20
After Connection ......................................................................................................................................G-20
Preset Fail-Safe ...............................................................................................................................................G-20
Receiver Power Only ...............................................................................................................................G-20
After Connection ......................................................................................................................................G-20
Programming SmartSafe ..............................................................................................................................G-20
(All Spektrum Aircraft Receivers) .........................................................................................................G-20
Programming Preset Fail-Safe .....................................................................................................................G-21
(JR R921 and Spektrum AR9000 Receivers Only) .............................................................................G-21
Standard Range Testing
................................................................................................................................ G-21
Range Testing the X9503 2.4 ..................................................................................................................G-21
Advanced Range Testing Using a Flight Log
............................................................................................G-22
Advanced Range Testing the X9503 2.4 ...............................................................................................G-22
Flight Log—Optional for JR R921 Receiver
...........................................................................................G-23
Using the Flight Log ..................................................................................................................................G-23
Receiver Power System Requirements
....................................................................................................G-24
Recommended Power System Guidelines ...............................................................................................G-24
Flash Memory
................................................................................................................................................ G-25
Battery Alarm and Display
.......................................................................................................................... G-25
Tips on Using 2.4GHz Systems
.................................................................................................................G-25
Airplane –
ACRO Mode .................................................................................................................................A-1
Flight Modes
..................................................................................................................................................A-1
ACRO Programming - Please Read .........................................................................................................A-1
ACRO - Getting Started – System Menu Basics ..................................................................................A-1
Access the System Menu ................................................................................................................................A-2
Select a Model Memory .................................................................................................................................A-2
Reset The Model ..............................................................................................................................................A-3
To Activate the ACRO Mode ........................................................................................................................A-4
Enter a Name for the Model .........................................................................................................................A-4
ACRO - System Menu - Advanced Functions ...........................................................................................A-5
Flight Modes ......................................................................................................................................................A-6
To Activate Flight Modes ................................................................................................................................A-7
TRIM:COM (Flight Modes) ............................................................................................................................A-8
D/R:SW (Flight Modes) ..................................................................................................................................A-8
Switch Assignments .........................................................................................................................................A-9
Flap Trim On/Off ..............................................................................................................................................A-9
Activate/Inhibit Switches ............................................................................................................................. A-10
Wing Type ....................................................................................................................................................... A-11
Wing Parameter – (Wing Type) ................................................................................................................. A-12
V-tail (Wing Type) .......................................................................................................................................... A-14
Dual Channels (Wing Type) ........................................................................................................................ A-14
Twin E. (Wing Type) ...................................................................................................................................... A-16
Trim Step ......................................................................................................................................................... A-18
ACRO – Function List ............................................................................................................................. A-19
REV.SW – Servo Reversing
........................................................................................................................ A-19
SUB TRIM ........................................................................................................................................................ A-20
TRVL ADJ. – Travel Adjust
............................................................................................................................ A-21
D/R & EXP – Dual Rate and Exponential ................................................................................................ A-22
THRO CURV – Throttle Curve ................................................................................................................. A-23
FLAP SYS. – Flap System
.............................................................................................................................. A-25
Auto Land (Flap System) ............................................................................................................................. A-26
ELEV – Elevator Compensation (Flap System) ....................................................................................... A-27
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