Futaba 4GRS User Manual

INSTRUCTION MANUALRDigital Proportional1M23N29602R/C System

CautionWarning10For Your Safety As Well As That Of Others (Only when NiMH/NiCd /LiFe batteries are used)NiMH / NiCd / LiFe Battery Handling Precaution

Connect the communication port of both T4GRS with the optional DSC cord.Communication port DSC cord for T4PK (option)(MDL TRANS screen)Press(DISP MENU

30 seconds wait is displayed on the receive side screen.Transfer execution button- (+) and (-) buttons pressed simultaneously for about 1 second.Mode

UP TIMERFUEL DOWN TIMER LAP TIMERTIMER DisplyPressPressPressPressSelect "TIMER"(HOME screen)(MENU 1 screen)(TIMER screen)(MENU 2 screen)102

103Fun ctionFUEL DOWN TIMER functionFuel down timer function- This function is primarily used to check the refueling time of a gasoline car. (The rema

Status display RST :Reset state RDY :Throttle stick operation wait RUN :Timer running STP : Timer stopped104Fun ctionTimer selection First, sel

Alarm time (ALRM) OFF, 1 ~ 99 m Initial value: 5 mStatus display RST :Reset state RDY :Throttle stick operation wait RUN :Timer running STP :

Alarm time (ALRM) OFF, 1 ~ 99 m Initial value: 5 mStatus display RST :Reset state RDY :Throttle stick operation wait RUN :Timer running STP :

Status display RST :Reset state RDY :Throttle stick operation wait RUN :Timer running GOAL: Timer stoppedStatus display RST :Reset state RDY :T

Reset button- Reset by pressing the (+) and (-) buttons simultaneously for about 1 second.Lap memory No. displayTotal time displayLap time displayPres

Display "SYSTEM" screen by the following method:PressPressCONTRALHT-TMBK-LHTSYSTEMLHT-PWBAT TDRY4OPE-TMBUZZERMENUTH-STKDISP0ALL10s1565OFFTLM

Warning11For Your Safety As Well As That Of OthersWhen the system will not be used for any length of time, store the system with NiMH/NiCd batteries

Backlight mode (BK-LHT) KEY, ALL, OFFBacklighting time (LHT-TM) 1~30 Initial value: 10Backlighting brightness (LHT-PW) 1~30 Initial value: 15CONTRA

Buzzer tone (BUZZER) OFF, 1~100 Initial value: 85Voltage display When BATT is set to dry cell use DRY4 or LiFe2/NiMH5, the voltage display of the H

CONTRALHT-TMBK-LHTSYSTEM[ RT ]LHT-PWBAT TOPE-TMBUZZERMENUTH-STKDISP5 50ALL10s15DRY465OFFENGTLMTRUSERTIMERTLMTRMenu character (MENU) ENG, CONTRALHT-TM

fig-1fig-4fig-2 fig-3PressPressADJUSTER＊STEERING＊THROTTLE[ RT ]PressPressSelect "ADJUSTER"113Fun ctionAdjuster "ADJUSTER"(Preparation

5：57：3Neutral Adjuster(Throttle stick)114Fun ctionAdjuster "ADJUSTER"(Preparation)On the ADJUSTER screen, select the setting item "THRO

Telemetry info(HOME screen)115Fun ctionInfoInfoInfoInfoSignalInfoTemperature SensorRPM SensorVoltage Sensor Battery voltage is displayed

(Sensor Set Screen)(Log Set Screen)(Telemetry Function ON/OFF Screen)(HOME screen)PressPressPressPressPressPressPressPressPressPressp.117p.120p.118The

Function ON/OFF (MODE) INH, ACTSelect button- Select with the (+) or (-) but-tons.Telemetry function :OFF- Telemetry function :ON- Receiver ID before

Alarm ON/OFF ON, OFF- Select with the (+) or (-) but-tons.Voltage alarm 3.8V~8.0V Initial value: 5VAdjust button- Adjust with the (+) and (-) but-ton

Alarm ON/OFF ON, OFF- Select with the (+) or (-) but-tons.Voltage alarm 0.0V~90.0V Initial value: 5VAdjust button- Adjust with the (+) and (-) but-t

12Before Using-Telemetry systemThe T4GRS transmitter has adopted the newly developed bidirectional communication sys-tem "T-FHSS"-2.4GHzSS (

Function ON/OFF (MODE) INH, ACT- Select with the (+) or (-) but-tons.Gear ratio (moderating ratio) 0.001~64 Initial value: 1Adjust button- Adjust wi

Log recording cycle0.1~60s(sec) 0.1~10s(sec)0.1s step 10s~60s(sec)1s step Initial value: 1.0secAdjust button- Adjust with the (+) and (-) but-tons.-

122Fun ctionTelemetry "TELEMETRY"Displays the log data elapsed time.Displays the type of log data.Displays the dataReceiver power supply vol

123ReferenceReferenceRatings*Specications and ratings are subject to change without prior notice. CautionCommunication method:One-way operation syste

124ReferenceWarning DisplaysLow Battery AlarmIf the transmitter battery voltage drops to 4.1V(when us-ing Futaba rechargeable type battery: 4.9V) or l

THROTTLESTICKRX セッテイWARNINGIf the power switch is quickly switched from the DISP mode to the PW ON mode or vice versa, the switch er-ror shown at th

Optional Parts126ReferenceThe following parts are available as 4GRS options. Purchase them to match your appli-cation. For other optional parts, refer

©Copyright 2014. No part of this manual may be reproduced in any form without prior permission. The contents of this manual are subject to change wi

R

13Before Using-Throttle speed (SPEED)Sudden stick operation on a slippery road surface will only cause the tires to spin and the model to not accelera

14Before UsingAfter opening the box, rst check if the contents conform to the following. The contents depend on the set as shown below. Set Contents

15Before Using*The switches, dial, and trimmers in the gure are shown in the initial setting position. AntennaDigital Dial 1 (DL1)(default CH4)Thrott

Battery coverSlide battery cover while pressing here.16Before UsingBattery Replacement Method1Remove the battery cover from the transmitter by sliding

CautionWhen closing the battery cover, be careful that the battery cover does not pinch the battery lead wires.Shorting of the battery lead wires may

AC outletChargerTransmitter charging LED To transmitter charging jack To receiver Ni-Cd batteryBalance charging connector for LiFe battery charger.18

WarningCaution19Before UsingNever plug it into an outlet other than the indicated voltage.Plugging the charger into the wrong outlet could result in

Thank you for purchasing a Futaba 4GRS-2.4GHz system.Before using your 4GRS-2.4GHz system, read this manual carefully in order to use your R/C set saf

OFFDISPRadio waves are not being transmittedMIDDLEWhen you do not run, turn OFF.It cannot operate. PWR ONRadio waves are being transmitted DOWNUPLCD s

Battery voltage displayST :Steering trim displayTH :Throttle trim displayD/R :Steering D/R displayATL :Throttle ATL displayPower switch turned onB

22Before Using Throttle stick function Steering stick functionLeft turn LeftRight turn RightForwardUPDown brake or back (　RC Car example sh

23Before UsingOperation of CH3 can be checked.Operation of CH4 can be checked.Switch Dial Operation CH3 CH4 (CH3: Switch SW2, CH4: Dial DL1)The thr

ATL displaySteering D/R displaySteering trim displayThrottle trim displayDT2 DT1DT3Steering D/RDT4 ATLBrake amount adjustment24Before UsingTrim O

25Before UsingLever head Ｂ Lever head ＡStick Lever Head AdjustmentThe length of the lever head of the steering and throttle sticks can be adjusted.Adj

26Before UsingSteering stick adjusting screw Throttle stick adjusting screw Stick Tension AdjustmentMake this adjustment when you want to change the s

27Before UsingHigh sideBrake (reverse) sideStroke can be reduced mechanically.Stick stroke adjustment1Make this adjustment by turning the adjusting sc

28Before UsingNeutral AdjusterNeutral Adjuster OperationThe neutral adjuster selects the throttle stick neutral position.55731Neutral adjuster is set

29Before Using• "F10" should be selected only when using a ratchet on the throttle stick. (for GP boats) UP or DOWNCONTRALHT-TMBK-LHTSYSTEM[

3• No part of this manual may be reproduced in any form without prior permission.• The contents of this manual are subject to change without prior not

30Before UsingChanging to Ratchet Type Throttle StickChanging the throttle stick from the self-centering type to ratchet type that stops at an arbitra

31Before UsingWarningAntenna Moving RangePosition the antenna vertically to the ground.AntennaA BAbout The Transmitter AntennaPosition the antenna ve

WARNINGCautionAntennatubeAntennaCoaxialcableR304SB32Before UsingAlways use R304SB,R304SB-E under the following conditions:Battery :Power requirement

B/CCH3CH2CH1CH4ReceiverSwitchTo BatterySteering servoThrottle servoCH3 servoCH4 servo33InstallationConnect the receiver and servos as shown below. Co

Installation Safety PrecautionsWarning34InstallationReceiver (receiver antenna)Receiver vibration-proofing / waterproofingDo not cut or bundle the rece

Warning35InstallationConnector ConnectionsServo InstallationBe sure the receiver, servo, battery and connectors are fully and firmly connected.If vibr

Warning36InstallationElectronic Speed ControlMotor Noise SuppressionInstall the heat sinks where they will not come in contact with aluminum, carbon

37Initial Set-UpBefore setting the Transmitter functions, check set the following items rst.Initial Set-UpPreparations (Transmitter)(Display when pow

FHSS T-FHSS Normal speedT-FH (NORM) S-FHSS Normal speedS-FH (NORM) T-FHSS High speedT-FH (HIGH) S-FHSS High speedS-FH (HIGH)Push Select "RX MODE

R304SB(Error screen)39Initial Set-Up*When using an FHSS (R603GF/R2004F, etc.) or S-FHSS(SFH) system (R2104GF, R204GF-E, etc.) receiver, after the end

4Table Of ContentsFor Your Safety As Well As That Of Others ...8Explanation Of Symbols ...

Telemetry function :OFF- Telemetry function :ON- Receiver ID before setting or ID mis-match- When the receiver ID is set, before ID check in the recei

Throttle trim (DT2)Steering trim (DT1)Steering trimThrottle trimF5/B5 or F7/B35 : 57 : 3F5/B5 F7/B3Forward side Brake side Forward side Brake side41In

Throttle ATLSteering dual rateSteering dual rate DT3Throttle ATL DT442Initial Set-Up(Set-Up Procedure When Installed In a Car) When installing the ser

(+) button is pressedPress (-) button is pressedPress (JOG) button is pressed (+) button (-) button (JOG) buttonPress(JOG) button up(JOG) butto

Example: Select the chan-nel to be changed at the REVERSE screen by (JOG) button up or down operation, and set the servo direction by selecting "

"KATAKANA" charactersAlphabetic charactersEXPSPEEDTH A.B.STH A.B.STH ACCELEND POINTTRIMREVERSE D/R ATLD/R ATLFAIL SFECH3 /CH4CH3 /CH4MODELM

46Function MapFunction AbbreviationDescription Of FunctionPage NoRX MODEReceiver type selection/linking with telemetry type T-FHSS system receiverP-37

Current model # and model nameID of T-HSS receiver linked last at this modelModel copy function.Model reset function.Model selection function.When a T

Move the cursor to select mod-el # with the (JOG) button. Model #. 01~40 Select model # with the (+) or (-) button. Modified model # and model na

Model name is also copied. "COMPLETE!" is displayed. Move the cursor to "COPY" with the (JOG) button. The copy destination m

5BeforeUsingFunctionMapFunctionsFor Your SafetyAs Well AsThat Of OthersInstallationReferenceInitialSet-UpFunction Map ...

Move the cursor to "RESET" with the (JOG) button. "COMPLETE!" is displayed.The set RX type and T-FHSS receiver ID remain even i

Move the cursor to the char-acter you want to change by (+) or (-) button. Select the character by (JOG) button. Move the cursor to "RE-SET&q

Setting itemSTR :Steering (1st channel)THR :Throttle (2nd channel)CH3 :3rd channelCH4 :4th channel Move the cursor to "STR, THR, CH3 and CH4

90°Use to adjust the neutral position Move the cursor to "STR, THR, CH3 and CH4" with the (JOG) button.Setting itemSTR :Steering (1st cha

54Fun ctionWarningEnd Point Adjuster "END POINT" (EPA) (All channel)Use this when performing left and right end point adjustments, throttl

Setting item selection (Steering and Throttle direction) - The direction (STR LFT and STR RGT) linked with the steering stick is switched.- The direc

(HOME screen)100*This function cannot be used with "TH-STK : F10".56Fun ctionEnd Point Adjuster "END POINT"(Preparation)- Befor

PressPressPressSelect "FAIL SAFE"Press(HOME screen)(MENU 2 screen) (FAIL SAFE screen)(MENU 1 screen)cursor position [RT]Setting item MODE

FAIL SAFE screenBattery fail safe function OFF, ACT Initial value: OFFB-F/S Voltage 3.8, 4.0, 4.2, 4.4, 4.6, 4.8, 5.0, 5.3, 5.6, 5.9, 6.2, 6.5, 6.8

+1 ~ +100-1 ~ -100Stick operationMild(Negative side)Quick(Positive side)Stick operationServo travelPressPressPressPressSelect "EXP"(HOME scr

6Channel 3/4 "CH3/CH4" ...71Channel 3/4 PositionSteering Dual Rate/ Throttle ATL

0Normal+1 ~ +100Stick operationFaster-1 ~ -100GentlerServo travel Vertical cursor moves in step with throttle stick operation.60Fun ctionExponential

0Normal+1 ~ +100Stick operationFaster-1 ~ -100GentlerServo travel Vertical cursor moves in step with throttle stick operation.*This function is not a

Without "SPEED" With "SPEED"Under steeringSmooth corneringSpin(HOME screen)(MENU 2 screen)(SPEED screen)(MENU 1 screen)PressPressP

63Fun ction(Preparation)- On the SPEED screen make the following adjustments:1"TURN" direction adjustmentOn the SPEED screen, Select the set

highneutralWith "SPEED": Quick start without skiddingWithout "SPEED": Slow start due to skidding64Fun ctionServo Speed "SPEE

(HOME screen)(MENU 2 screen) (TH ACCEL screen)(MENU 1 screen)PressPressPressPressSelect "TH ACCEL"*This function is not available in "T

66Fun ctionThrottle Acceleration "TH ACCEL"(Preparation)- On the TH ACCEL screen make the following adjustments:1(Forward acceleration amou

(HOME screen)(MENU 2 screen) (TH A.B.S screen)(MENU 1 screen)PressPressPressPressSelect "TH A.B.S"*This function is not available in "T

68Fun ctionAB.P(Amount of brake return)AB.PServo travelA.B.S. Function "TH A.B.S"- DELY : DelaySets the delay from brake operation to ABS o

CYCLServo travelCYCL (Cycle)Cycle speed (CYCL) 1 ~ 30 Initial value: 10DUTYServo travelDUTY (duty): X and Y ratioX: (Brake application time)Y: (Bra

7BeforeUsingFunctionMapFunctionsFor Your SafetyAs Well AsThat Of OthersInstallationReferenceInitialSet-UpReference ...

70Fun ctionA.B.S. Function "TH A.B.S"When the T4GRS is used with the Futaba fail safe unit (FSU), it will operate as de-scribed below. Howe

PressPress(HOME screen)(MENU 2 screen)(CH3/CH4 screen)Press(MENU 1 screen)PressSelect "CH3/CH4"Display when CH3/4 is as-signed to a switch

PressPress(HOME screen)(MENU 2 screen)(D/R ATL screen)Press(MENU 1 screen)PressSelect "D/R ATL"72Fun ctionSteering Dual Rate/ Throttle ATL

PressPressPressPressSelect "S W / D I A L"(HOME screen)(MENU 1 screen)(SW/DIAL screen)(MENU 2 screen)73Fun ctionFunction Select Trim Dial

Adjust button Adjust with the (+) and (-) but-tons.SW1 function selectionDirection of operation set-tingSW2 function selectionON/OFF position is dis-

75Fun ctionFunction Select Trim Dial "TRIM DIAL"SW1SW2DT2DT1DT3DT4DL1Abbreviation used on setup screenFunction name, etc.NT-BRK Neutral bra

PressPressPressPressSelect "BRAKE MIX"(HOME screen)(MENU 1 screen)(BRAKE MIX screen)(MENU 2 screen)Setup item<CH3>MODE : Brake functi

77Fun ctionBrake Mixing "BRAKE"1 (Brake mixing function ON/OFF)Using the (JOG) button, select "MODE" of <CH3> for CH3 brake

PressPressPress(HOME screen)(MENU 1 screen)(PROG MIX screen)(MENU 2 screen)PressSelect "PROG MIX "78Fun ctionProgrammable Mix "PROG M

These setup items are different dep-completed on the master channel. Upper side : LEFT/FWRD/UP Lower side : RGHT/BRAK/DOWNProgram mixing function

WarningCautionWhen using the T4GRS in the T-FHSS (HIGH) and S-FHSS (HIGH) mode, always use it under the following conditions:Servos :Futaba digital s

Front axle only（4WS OFF）Same steer Reverse steer Rear axle onlyPressPressPress(HOME screen)(MENU 1 screen)(4WS screen)(MENU 2 screen)PressSelect &quo

The function select switch screen can be displayed from this screen.< NO SW >If function’s ON/OFF switch is not selected, <NO SW> is displ

PressPressPress(HOME screen)(MENU 1 screen)(DUAL ESC screen)(MENU 2 screen)PressSelect "DUAL ESC "The function select switch screen can be

83Fun ctionDual ESC mixing "DUAL ESC"The programmed DT button is used to select the drive type as shown in the figure below.The function sele

AVCS / NORMAL Modes The gyro has 2 operating modes: NORMAL mode and AVCS mode. In the AVCS mode, the angle is con-trolled simultaneously with NORMAL

The function select switch screen can be displayed from this screen.85Fun ctionGyro mixing "GYRO MIX"(Preparation)- Refer to the gyro instru

PressPressPress(HOME screen)(MENU 1 screen)(CPS MIX screen)(MENU 2 screen)PressSelect "CPS MIX"86Fun ctionGyro mixing "CPS MIX"Di

ON/OFF Position (POSI) 5 ~ 95 Initial value: 50Shows the ON/OFF state87Fun ctionGyro mixing "CPS MIX"1 (Control system setup)Operate the (

5 : 57 : 3F5/B5 F7/B3Forward side Brake side Forward side Brake sidePressPressPress(HOME screen)(MENU 1 screen)(TH MODE screen)(MENU 2 screen)PressSel

Warning displayThe function select switch dial screen can be dis-played from this screen.< NO SW >If function’s ON/OFF switch is not selected, &

9For Your Safety As Well As That Of OthersWarningDo not operate outdoors on rainy days, run through puddles of water or use when visibility is lim-it

Warning displayThe function select switch screen can be displayed from this screen.< NO SW >If function’s ON/OFF switch is not selected, <NO

Warning displayThe function select switch screen can be displayed from this screen.< NO SW >If function’s ON/OFF switch is not selected, <NO

Communication portESC receiver connectorConnecting ESC receiver connector to the transmitter Communication port Connection diagram92Fun ction(Preparat

93Fun ctionESC Link Function "MC LNK"a-Select the setting item "MODE" using the (JOG) button, and select "READ" by (+)

The currently set item is displayed here. The item indicated by the highlighted cursor is se-lected.Adjustment buttons- Use the (+) and (-) buttons

95Fun ctionLBP-(LOW BATTERY VOLT) 2.5V~6V2.5V~7.5V for MC950CRSame as Link software Low Bat ProtectionThis setting cuts off the output to the motor wh

Adjustment buttons- Use the (+) and (-) buttons to make adjustments.- Return to the initial value by pressing the (+) and (-) buttons simultaneously (

97Fun ctionESC Link Function "MC LNK""MIn" which sets the frequency when the load is small, is set to the high frequency side (la

98Fun ctionPage1TBM-(TURBO MODE) OFF /LV1 /LV2Same as Link software Turbo ModeThis function sets the turbo mode. More power can be enabled using the t

99Fun ctionLAU-(LEAD ANGLE USE) ON /OFFSame as Link software Lead Angle UseThis function is effective when TBM (Turbo Mode) is LEV1 or LEV2 and sets