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OTHER 4EX FUNCTIONS

OTHER 4EX FUNCTIONS

Trainer switch

Trainer switch

To  utilize  the  trainer  function,  the  appropriate  trainer  cord  (available  separately)  and  a  second  Futaba  transmitter  (usually 

provided by your flight instructor or R/C club) will be required. When two radios are connected with the trainer cord, they are 

both capable of operating the model, but it's usually best for the instructor to hold the radio that has been setup for the plane 

to  be  flown  (as  it  is  already  programmed  to  fly  the  model).  When  the  instructor  holds  the  trainer  switch  on  his  radio,  the 

student  will  have  control.  When  the  instructor  wishes  to  regain  control  he  simply  releases  the  switch.  Then  he  will  have 

immediate, full control. 

If connecting the 4EX to another 4EX with the small, square 

micro

 trainer jack, use the 

Micro to Micro

 (MM-TC) trainer cord 

(FUTM4415). If connecting the 4EX to Futaba radios with the larger, round, 

DIN

 connector, use 

Micro to DIN

 (MD-TC) 

trainer cord (FUTM4420). The T4EX transmitter may be connected to another T4EX, or any 4VF, 6VA Skysport, T6EXA, FF6 - 

9, 9Z, or 14MZ series transmitter. 

To use the trainer cord:

To use the trainer cord:  

1. It is best for the instructor to use the transmitter that is already set up for the model to be flown. 

2. If the student's radio has PCM/PPM capability, set it to PPM. 

3. If the student's radio has a plug-in RF module, remove the module. 

4. Collapse the student's antenna and fully extend the instructor's antenna. 

5. With the transmitters off, connect the trainer cord to both radios. (On the 4EX the trainer 

jack is in the center of the rear of the case.) Do not force the plug into the transmitter and 

note that the plug is 

keyed

 so it can go in only one way. 

6. Turn on the instructor's transmitter. 

DO NOT

DO NOT

 turn on the students transmitter it will automatically 

power up,

 but will not 

transmit a signal. Set the servo reversing and trims of the student's radio to match that of the instructor's. 

7. Turn on the receiver switch in the model. Depress the trainer switch on the instructor's radio. Use the student

s radio to 

operate the controls (ailerons, elevator, rudder, etc.) and observe how they respond. Make any adjustments necessary to 

the student's transmitter to get the controls to respond correctly. 

8. Check to see that the trims are in 

sync

 by toggling the trainer switch back and forth a few times. The controls on the 

model should remain stationary. If the controls do not remain stationary, this indicates that the trim settings on the student's 

radio do not match those on the instructor's radio. Adjust the student's trims as necessary. 

Adjustable-length control sticks

Adjustable-length control sticks

 

The control stick length is adjustable to make the transmitter more comfortable to 

hold and operate. To adjust the length, hold the 

locking piece (B)

locking piece (B)

 and turn the 

stick tip (A)

stick tip (A) 

counterclockwise. Turn the locking piece B up or down to lengthen or 

shorten the stick. When the length is suitable, lock the stick in position by turning 

locking piece B counterclockwise. 

Changing the 4EX stick mode

Changing the 4EX stick mode

 

The transmitter may be operated in four different stick 

modes

 (1, 2, 3 & 4). The modes 

determine the functions that will be operated by control sticks. Currently, the transmitter is in 

mode 2

 and should be left in mode 2 unless you are an experienced flyer and have learned to 

fly in a different mode. In mode 2, the right control stick operates the aileron and elevator and 

the left stick operates the rudder and throttle. This is how 99% of Americans fly their models. 
To change the mode, simultaneously depress the MODE and SELECT keys, then turn on the power. The current mode will 

appear on the LCD screen. Push the DATA INPUT lever up or down to change the mode. If a mode is selected that moves 

the throttle control to the right stick, the throttle detent mechanism will have to be moved as well. This can be done by the 

Futaba Service Center. (See page 2) 

A

B

Summary of Contents for 4EX

Page 1: ...AL INSTRUCTION MANUAL for Futaba 4EX for Futaba 4EX 4 channel FM radio control system for aircraft Futaba Corporation Technical updates available at http www futaba rc com Entire Contents Copyright 2005 1M23N15601 4EX ...

Page 2: ...riginal container with a note enclosed and a thorough accurate description of the problem s Include the following in your note Symptoms Any unusual mounting conditions An inventory of items enclosed The items that require repair Your name address and telephone number Include the warranty card if warranty service is requested Send your system to the authorized Futaba R C Service Center at the addre...

Page 3: ...rvos are electronically joined via programming they are said to be mixed Each servo s end points can be independently set CONTENTS AND SPECIFICATIONS CONTENTS AND SPECIFICATIONS Transmitter T4EX Transmitter T4EX T4EX Transmitter with 4 model memory Transmitting on 29 35 36 40 41 or 72 MHz band Operating system 2 stick 4 channel system Modulation FM Frequency modulation Power supply 9 6V NT8S600B N...

Page 4: ...ed case is easy to read and allows rapid data input The system also holds independent memories for four different models The new adjustable length control sticks provide an improved feel External switches operate trainer cord or buddy box capabilities Programming features include servo reversing and E P A on all channels exponentials Additionally any one of three factory set preprogrammed wing typ...

Page 5: ...e it is inadvertently broken RADIO INSTALLATION RADIO INSTALLATION Follow these guidelines to properly mount the servos receiver and battery Make certain the alignment tab alignment tab on the battery switch and servo connectors is oriented correctly and keys into the corresponding notch in the receiver or connectors before plugging them in When unplugging connectors never pull on the wires Always...

Page 6: ...age 16 External antenna mounting External antenna mounting A Use a cut off servo arm as a stop stop or strain relief strain relief inside the fuselage to keep tension off the solder joint holding the antenna to the receiver Guide the antenna through a hole in the fuselage If possible insulate the hole with a rubber grommet or a small piece of rubber tubing B Make a hook hook from another cut off s...

Page 7: ...ions carefully NOTE NOTE The batteries are partially charged but will require a full overnight charge before the model may be flown 1 Connect the transmitter charging cord transmitter charging cord coming from the A C wall charger to the charge jack in the right side of the transmitter case The receiver charging cord receiver charging cord may be connected to the batteries two different ways The c...

Page 8: ...her than 1 000 mA 1 Amp If not done correctly fast charging can damage the batteries called memory If for example only two flights are made each time you go flying the batteries will not have reached very far down into their full capacity After doing this several times the batteries will remember and eventually think they can supply only enough power for two flights After two flights the batteries...

Page 9: ... RADIO PROGRAMMING THE 4EX RADIO Anytime you wish to view view or change change any of the current settings in the transmitter the programming mode must first be entered by of course turning on the power then by pressing the MODE MODE and SELECT SELECT keys simultaneously and holding them down for one second Once in the program the MODE key will be used to scroll through each of the seven function...

Page 10: ... setting that is the default value set at the factory CAUTION CAUTION Resetting the current model memory will permanently erase ALL ALL programming information for that model The data cannot be recovered unless you recorded it on a Model Data Recording Sheet in the back of this manual Do not reset the model unless certainly certainly you want flushing out that memory and start from scratch When ac...

Page 11: ...ion to reverse any servos necessary 2 Center the throttle control stick 3 Place the servo arms on the servos so they are perpendicular to the pushrods see page 5 It is okay to cut off any unused servo arms 4 Connect the pushrods to the control surfaces Adjust the length of the pushrods until the control surfaces are centered when the servos are centered To adjust the trim settings To adjust the tr...

Page 12: ...e the correct control throws Elevon mixing Elevon mixing Intended for tailless flying wing models such as delta wings and flying wings elevon mixing mixes channel 1 aileron to channel 2 elevator allowing the elevons to operate in unison as elevators or in opposition as ailerons This function requires that each elevon be operated by a separate servo To activate elevon mixing To activate elevon mixi...

Page 13: ...d SELECT keys down simultaneously Use the DATAINPUT lever to display the desired stick mode FLOW CHART FLOW CHART 4EX FUNCTIONS 4EX FUNCTIONS Simultaneously Press the MODE MODE and SELECT SELECT keys and hold them down for one second to enter the programming mode Press the keys again or turn off the transmitter to exit the programming mode Screen at Startup Stick Mode Stick Mode Programming Mode f...

Page 14: ...d trims of the student s radio to match that of the instructor s 7 Turn on the receiver switch in the model Depress the trainer switch on the instructor s radio Use the student s radio to operate the controls ailerons elevator rudder etc and observe how they respond Make any adjustments necessary to the student s transmitter to get the controls to respond correctly 8 Check to see that the trims ar...

Page 15: ...al for an out of control model to cause property damage and or severe personal injury We strongly strongly urge you to fly at an R C club site where frequency control is in effect so you can be confident you will be the only one flying on your channel Charge the batteries Charge the batteries Second to the pilot s flight skills one of the most important factors that can determine a model s longevi...

Page 16: ...check must must be performed before the first first flight of a new model It is not necessary to do a range check before every flight but is not a bad idea to perform a range check before the first flight of each day A range check is the final opportunity to reveal any radio malfunctions and to be certain the system has adequate operational range 1 Turn on the transmitter then the receiver Leave t...

Page 17: ... REVERSE Servo Reverse E P A End Point Adjust EXP Exponential setting CH 1 CH 2 CH 3 CH 4 N R Model No 1 2 3 4 Wing Mixing Inh EL v N R N R N R Model name MENU FUNCTION REVERSE Servo Reverse E P A End Point Adjust EXP Exponential setting CH 1 CH 2 CH 3 CH 4 N R Model No 1 2 3 4 Wing Mixing Inh EL v N R N R N R ...

Page 18: ...d channels 36 60 receiver crystal FUTL58 Note Note Should you ever wish to change the transmitter frequency the transmitter must be sent to the Futaba Service Center for retuning FUTABA ACCESSORIES AND REPLACEMENT PARTS FUTABA ACCESSORIES AND REPLACEMENT PARTS for USA for USA REPLACEMENT PARTS REPLACEMENT PARTS ACCESSORIES ACCESSORIES ANT 5 Transmitter antenna NR 4J 4 8 Volt 600 mAh receiver batte...

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