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FUTABA 8J User Manual

FUTABA 8J
93 pages
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8J-2.4GHz
8-CHANNEL RADIO CONTROL SYSTEM
INSTRUCTION MANUAL
Technical updates and additional programming examples available at: http://www.futaba-rc.com/faq
Entire Contents © 2012
1M23N26602
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FUTABA 8J Specifications

General IconGeneral
Product typeRemote control
Product colorBlack
Frequency band2.4 GHz
Channels quantity3 channels
Built-in displayYes

Summary

Introduction and Support

Support and Service Information

Contact details for assistance, operation, use, and programming.

North America Support

Contact information for the Futaba Service Center for programming and user questions.

Outside North America Support

Guidance to contact regional Futaba importers for assistance.

Compliance and Safety Information

Application, Export, and Modification Guidelines

Information on product usage, export regulations, and unauthorized modifications.

Federal Communications Commission Interference Statement

FCC compliance details for digital devices and potential radio interference.

Radio Frequency Radiation Exposure

RF exposure compliance requirements, including minimum separation distance.

FCC Compliance Information Statement

Statement of compliance with FCC rules for the device.

Special Markings and Flying Safety

Meaning of Special Markings

Explanation of DANGER, WARNING, and CAUTION symbols.

Flying Safety Precautions

Essential safety guidelines for operating the R/C system.

Flying Field Operations

Flying Field Precautions

Attention to field rules, obstacles, and safe flying practices.

Power Switch Sequence

Correct procedure for turning the transmitter and receiver on and off.

Introduction to the 8J System

8J Transmitter Features

Overview of the transmitter's display, controls, and capabilities.

System Components and Specifications

Receiver R2008SB Overview

Description of the R2008SB receiver and its S.BUS port.

Servo Compatibility

Information on compatibility with Futaba J-plug servos.

System Components and Technical Specifications

List of included items and specifications for transmitter and receiver.

Optional Accessories

Available Transmitter Accessories

Details on optional accessories like battery packs, trainer cords, and neckstraps.

Transmitter Controls Diagram

Airplane Mode Transmitter Controls

Illustration and labels for the T8J transmitter controls in Airplane mode.

Transmitter Controls for Helicopter

Helicopter Mode Transmitter Controls

Illustration and labels for the T8J transmitter controls in Helicopter mode.

Transmitter Battery Installation and Removal

Transmitter Battery Handling

Instructions for installing, removing, and charging transmitter batteries.

Switch Assignments and System Power-Up

Default Switch Assignment Table

Table showing default functions assigned to switches and VR.

Powering On the 8J System

Procedure for safely turning on the 8J transmitter system.

Receiver and Servo Connections

Aircraft (ACRO) Receiver Wiring

Diagrams for connecting servos to the receiver for aircraft models.

Helicopter (HELI) Receiver Wiring

Diagrams for connecting servos to the receiver for helicopter models.

Battery Charging and Care

Charging System Batteries

Instructions for charging transmitter and receiver batteries.

Battery Care and Precautions

General rules and guidelines for battery charging and handling.

Control Stick and Display Adjustments

Adjusting Control Stick Length and Tension

Guide to adjusting stick length and spring tension for comfort.

Adjusting Display Contrast

Procedure for adjusting the LCD screen contrast.

Radio Range Check and Servo Test

Performing a Range Check

Procedure for checking radio range using Power Down Mode.

Servo Test Operation During Power Down

How to test individual servos during Power Down Mode.

Radio Installation Procedures

General Radio Installation Guidelines

Guidelines for mounting servos, receiver, and battery.

Receiver Antenna Installation

Optimal Antenna Placement

Instructions for best results with dual antenna diversity.

Receiver Protection and Mounting

Receiver Vibration and Waterproofing

Methods for protecting the receiver from vibration and moisture.

Link Procedure for Transmitter and Receiver

Linking T8J Transmitter to R2008SB Receiver

Step-by-step guide for linking the transmitter and receiver.

S.BUS System Installation

S.BUS Wiring and Setup

Instructions for installing and connecting the S.BUS system.

Transmitter Display and Button Functions

Understanding Transmitter Displays and Buttons

Explanation of the startup screen, jog key, and other buttons.

Warning and Error Displays

Interpreting Transmitter Warnings and Errors

Information on low battery, mixing alerts, and backup errors.

Aircraft (ACRO) Menu Functions Overview

List of ACRO Menu Functions

Index of available functions for aircraft programming.

ACRO Functions Map and Navigation

Navigating ACRO Functions Menu

Diagram illustrating menu navigation and control inputs.

Model Memory Management

Model Select Function

How to select and switch between model memories.

Model Copy Function

Procedure for copying model data between memories.

Model Reset and Naming

Model Reset Function

How to reset individual model memories to factory defaults.

Model Name and Type Setting

Guide to naming models and setting their type (aircraft/helicopter).

Model and User Name Assignment

Assigning Model and User Names

How to name the model memory and the transmitter's user name.

Parameter Setup

Parameter Menu Overview

Setting model parameters like type, modulation, and ATL.

Setting the Model Type

How to select the aircraft or helicopter model type.

Receiver Modulation Selection

Setting Receiver Modulation (S-FHSS/FHSS)

How to select the receiver's transmission modulation type.

Adjustable Travel Limit and LCD Settings

Adjustable Travel Limit (ATL) Function

How to adjust throttle trim effectiveness based on throttle position.

LCD Screen Adjustment Options

Adjusting contrast, backlighting mode, time, and brightness.

Transmitter Display Modes and Battery Settings

Home Screen Display Mode Selection

Choosing what information is displayed on the home screen.

Transmitter Battery Type and LED Adjustments

Setting battery type and adjusting LED behavior.

Model Data Transmission

Transferring Model Data Between Transmitters

Procedure for transmitting and receiving model data.

Servo Reversing Function

Changing Servo Response Direction

How to reverse the direction of individual servos.

End Point Servo Travel Adjustment

Adjusting Individual Servo Travel

Setting end points for each servo's travel independently.

Idle-Down and Throttle Cut Functions

Engine Idle Management (IDLE-DOWN)

Setting engine idle for landings and spins.

Throttle Cut Function (THR-CUT)

Easy engine stop function via switch.

Throttle Cut for ESC and Engine Control

Throttle Cut (THR-CUT) for ESC Models

Setting throttle cut for electric motors.

Dual/Triple Rates and Exponential Setup

Assigning Dual/Triple Rates and Exponential

Setting up adjustable control rates and exponential curves.

Dual/Triple Rate and Exponential Examples

D/R,EXP Examples for Helicopters

Examples of setting dual rates and exponential for heli models.

Setting Aileron Triple Rates

Configuring Aileron Triple Rates and Exponential

Setting up 3 rates and exponential for ailerons in ACRO.

Timer Submenu Functions

Using the Timer Functions

Controlling two electronic clocks for flight time tracking.

Auxiliary Channel Functions (AUX-CH)

Defining Auxiliary Channel Assignments

Assigning controls to channels 5-8 for auxiliary functions.

Trainer Function for Pilot Training

Setting Up and Using the Trainer Function

Connecting two transmitters for training sessions.

Trim Adjustments

TRIM Submenu Overview

Resets and adjusts digital trim effectiveness.

Adjusting Trim Step (STEP)

Changing the rate of trim movement for fine adjustments.

Sub-Trim Servo Adjustments

Making Small Servo Neutral Corrections

Adjusting servo neutral positions for precise alignment.

Servo Display and Cycle Submenu

Viewing Servo Output and Cycle Function

Displaying radio output and locating servo problems.

FailSafe Settings

FailSafe for Signal Loss or Low Battery

Setting receiver response to signal loss or low battery.

Battery FailSafe Function

Receiver response to low airborne battery voltage.

Airplane Functions Overview

Aircraft Wing Types (ACRO)

Description of simple, twin aileron, and flying wing types.

Activating Wing Type Functions

Choosing between Flaperon, Aileron Differential, and Elevon.

Flaperon Mixing for Aircraft

Using Flaperon Mixing

Activating flaperons for combined aileron and flap control.

Flap-Trim Adjustment for Flaperons

Adjusting Flaperon Trim

Using FLAP-TRIM to adjust flaperon center for level flight.

Aileron Differential Mixing (AILE-DIFF)

Using Aileron Differential

Setting up differential travel for twin aileron servos.

Aircraft Tail Types and Elevon Mixing

Aircraft Tail Types (ACRO)

Description of simple, dual elevator, elevon, and V-tail types.

Using Elevon Mixing (ACRO)

Setting up elevon mixing for delta or flying wing aircraft.

Dual Elevator Servos (AILEVATOR)

Using AILEVATOR Mixing

Combining elevator function with aileron function for dual elevator servos.

V-Tail Mixing Configuration

Using V-Tail Mixing (ACRO)

Combining elevator and rudder functions for V-tail aircraft.

Snap Roll Function

Executing Snap Rolls

How to set up and perform snap rolls using a switch.

Snap Roll Setup Example

Configuring Snap Roll Travels and Safety

Adjusting snap roll travels and activating the safety mode.

Understanding Mixing Functions

Types of Mixing Functions

Overview of linear, offset, curve, and delay mixes.

Elevator-to-Flap Mixing

Using ELEV-FLAP Mixing (ACRO)

Making flaps move proportionally to elevator control.

Airbrake Mixing for Aircraft

Using AIRBRAKE Mixing (ACRO)

Using flaps, twin ailerons, and elevator for steep descents.

Airbrake Setup Example

Configuring Airbrake Mixing

Adjusting flaperon travel and elevator response for airbrake.

Throttle-Needle Mixing for Engine Tuning

Using THROTTLE-NEEDLE Mixing

Adjusting engine mixture based on throttle stick position.

Throttle Delay Function

Using Throttle Delay (THR-DELAY)

Simulating turbine engine lag by slowing throttle servo response.

Throttle and Pitch Curve Adjustments

Throttle Curve (THR-CURVE) Setup

Adjusting the throttle operation curve for engine response.

Pitch Curve (PIT-CURVE) Setup

Setting up variable pitch propeller curves for airplanes.

Linear Programmable Mixes

Using PROG.MIX1-4 for Aircraft

Setting up linear mixes for aircraft functions.

Mix On/off Choices and Rate/Offset

Mix Activation Options

Using switches, NULL, or throttle for mix activation.

Mix Rate and Offset Settings

Understanding rate percentage and offset adjustments.

Flap-Elevator Mix Setup

Configuring FLAP-ELEV Mixing

Setting up flap movement based on elevator input.

Curve Programmable Mixes

Using PROG.MIX5-6 for Curve Mixes

Setting up curve mixes for specific flight characteristics.

Rudder-Elevator Curve Mix Setup

Configuring RUDD-ELEV Curve Mix

Setting up a curve mix to compensate for pitching issues.

Gyro Mixing Setup

GYA Gyro Mixing Configuration

Setting up gyro sensitivity and modes for GYA series gyros.

Special Additions for Aircraft

Commonly Used Additions and Functions

Overview of gyros, retracts, smoke systems, and kill switches.

Helicopter (HELI) Model Functions

Table of Contents for Helicopter Functions

Reference list for helicopter-specific functions and page numbers.

Helicopter Specific Menu Functions

Model Type Selection for Helicopters

Choosing the correct model type for helicopter setup.

Helicopter Swashplate Types

Description of different swashplate setups for helicopters.

Changing Helicopter Model and Swashplate Type

Example: Setting Helicopter Model and Swashplate Type

Step-by-step guide to changing model and swashplate types.

Swashplate AFR (Action Function Rate)

Adjusting Swashplate Function Rates

Reducing/increasing/reversing rates for swashplate functions.

Swash Mixing Functions

Using Swash Mixing (SWH MIX)

Correcting rotor tilt tendency by adjusting swash mixing.

Throttle and Swash Ring Mixing

Throttle Mixing (THROTTLE MIX)

Correcting model altitude changes due to rotor tilt.

Swash Ring Function

Limiting swashplate travel to prevent linkage damage.

Normal Flight Condition Setup

Setting Normal Flight Condition Parameters

Adjusting throttle, pitch, and revo. mixing for hovering.

Normal Flight Condition Goal Example

Example: Setting Up Normal Flight Condition

Step-by-step guide for setting normal flight condition parameters.

Throttle Hold Function

Setting Up and Using Throttle Hold (THR-HOLD)

Holding engine at idle position for auto-rotation practice.

Throttle and Pitch Curve Adjustments for Conditions

THR-CURVE and PIT-CURVE Settings

Adjusting curves for normal, idle-up, and throttle hold conditions.

Revo. Mix for Torque Counteraction

Mixing collective pitch commands with rudder for torque.

Idle-Up Flight Conditions

Setting Up Idle-Up Conditions

Configuring additional flight conditions for maneuvers.

Offset Trim Adjustments for Conditions

Using Offset Trims for Helicopter Conditions

Setting automatic trim changes for different flight conditions.

Delay Function for Smooth Transitions

Applying Delay to Channel Transitions

Providing smooth transitions for offset, revo, or throttle hold.

Hovering Adjustments

Fine-Tuning Hovering (HOV-THR and HOV-PIT)

Adjusting throttle and pitch curves for hovering.

High/Low Pitch Adjustments

Setting High/Low Pitch Curves

Adjusting high and low pitch curves for each flight condition.

Gyros and Governors Overview

Understanding Gyro Operation

Explanation of what a gyro is and its function.

Types of Gyro Responses

Description of Normal, Heading-hold/AVCS, and Stick priority.

Choosing the Right Gyro

Guidance on selecting a gyro based on skill and helicopter type.

Gyro Gain Example

Setting Up Heading-Hold/AVCS Gyro

Example for setting up AVCS gyro with idle-ups.

Governor System Setup

Governor System Overview

Explanation of the governor's role in maintaining head speed.

Governor Speed and ON/OFF Setting Example

Example: Governor Speed and Switch Settings

Setting governor speed and ON/OFF using one switch.

Transmitter Settings Configuration

Transmitter Stick Modes

Explanation of the four available stick modes.

Stick Calibration (STK-ADJ)

Procedure for calibrating transmitter sticks.

Throttle Reverse and Language Settings

Throttle Stick Reverse (THR-REV)

Reversing the throttle stick operation direction.

Changing Transmitter Language

Selecting the display language for the transmitter.

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