ROBBE FX-20 User manual

Brand: ROBBE

Model: FX-20

Category: Toys & accessories

Type: User manual

Instruction manual

FX-20

No. F8072

FX-20

CONTENTS PAGE

Safety precautions, observe at all times

1. Contents .............................................................. 4

2. General descripton ............................................ 4

2.1 FX-20 Transmitter ................................................ 4

2.2 R-6108 SB Receiver ............................................ 5

2.3 Receiver binding................................................... 5

Binding (Easy Link) ............................................. 5

Converting from analogue to digital servos .......... 5

2.4 Connecting the servo using PWM ........................ 6

2.5 Receiver output configuration for aircraft ............. 8

3. Technical data ..................................................... 9

3.1 FX-20 Transmitter ................................................. 9

3.2 Receiver R6108 SB 2,4 GHz ................................ 9

4. FX-20 transmitter controls ................................ 9

4.1 Turning transmitter on and off .............................. 10

4.2 LED monitor ......................................................... 10

4.3 Stick adjustment ................................................... 10

• Length adjustment ............................................. 10

• Spring centring ................................................... 10

4.4 Liquid Crystal Display ........................................... 10

4.5 Digital trim buttons ............................................... 11

4.6 Ratchet activation (stick mode) ............................ 11

4.7 Changing throttle function .................................... 11

4.8 Rotary control knobs ............................................ 12

4.9 Linear slider .......................................................... 12

4.10 Aerial .................................................................... 12

4.11 SD card memory .................................................. 12

• Inserting SD card ............................................... 12

• Formatting SD card ............................................ 12

• Removing SD card ............................................. 13

• Data transfer from PC ........................................ 13

• Backing up data ................................................. 13

• Memory capacity ................................................ 13

5. Remove/change the Transmitter battery .......... 13

6. RC charger, charging the trasmitter battery 14

7. Menus and navigation ........................................ 15

8. Start display description .................................... 16

8.1 Home Screen/ Start display for all model types .... 16

8.2 Control/switch H/W SELECT menu ...................... 17

8.3 Timer .................................................................... 18

CONTENTS PAGE

9. SYSTEM MENU (SYS) ......................................... 19

9.1 TRAINER operation .............................................. 19

9.2 Trainer system ...................................................... 20

• Trainer as instructor Tx ...................................... 20

• Trainer as student Tx ......................................... 21

9.3 Flight simulator operation ..................................... 21

9.4 Display settings .................................................... 21

• Contrast adjustment ........................................... 21

• Brightness adjustment ........................................ 21

• Display illumination period ................................. 21

9.5 User name ............................................................ 22

9.6 Control set-up H/W SET ....................................... 22

9.7 Stick mode selection ............................................. 22

9.8 Switch - Switchtyp Assigment .............................. 22

9.9 Information ........................................................... 23

10. Linkage menu (LNK) ....................................... 23

10.1 Servo .................................................................... 23

10.2 Model select. ........................................................ 24

• Select model memory ........................................ 24

• Create new model memory ................................ 24

• Delete model memory ........................................ 24

• Rename model memory ..................................... 25

• Copy model memory .......................................... 25

10.3 Model type ............................................................ 25

• Select wing and tail type .................................... 26

• Select swashplate type ...................................... 26

10.4 FREQUENCY modulation mode FASST .............. 27

• 7Chanel / MULT ................................................. 27

10.5 Change Frequency AREA .................................... 27

10.6 Function ............................................................... 28

• Configure controls .............................................. 28

• Select trim controls ............................................. 28

• Trim adjustment ................................................. 28

10.7 Sub trim Servo centring ....................................... 29

10.8 Servo reverse ...................................................... 30

10.9 Fail safe adjustment ............................................. 30

10.10 Servo end point/travel adjust ................................ 31

10.11 Thr cut function .................................................... 31

10.12 Idle down preset throttle position .......................... 32

10.13 T1-T4 trim adjust .................................................. 32

• Trim memory ...................................................... 32

10.14 Warning .............................................................. 33

10.15 Data reset ............................................................ 33

CONTENTS PAGE

11. MODEL (MDL) MENU (airplane) ........................ 34

11.1 Servo (see Page 23) ............................................ 34

11.2 Flight condition (glider only) ................................. 34

• Copy flight condition ........................................... 35

• Set delay time ..................................................... 35

• Change priorities ................................................ 35

11.3 Dual rate (ARF/EXPO) ......................................... 35

11.4 Programmable mixer ............................................ 36

11.5 Throttle curve/ Thr delay

(Power airplanes only) .......................................... 37

11.6 Aileron Differential ................................................ 37

11.7 Flaps settings ....................................................... 38

11.8 Aileron -> Camber Flap mixer .............................. 38

11.9 AILeron -> Brake Flap mixer ................................. 39

11.10 AILeron -> Rudder mixer ...................................... 39

11.11 Spoiler -> flap (Camber mix) ................................ 39

11.12 Elevator -> camber mixer ..................................... 40

11.13 Camber flap -> Elevator mixer .............................. 41

11.14 Rudder -> Aileron mixer ........................................ 41

11.15 Crow/ Butterfly mixer ............................................ 42

11.16 Trim mix ................................................................ 43

11.17 Gyro settings ........................................................ 43

11.18 V-Tail mixer ........................................................... 43

11.19 Ailvator (2 elevator with aileron) function .............. 44

11.20 Winglet Rudder settings ....................................... 44

11.21 Electric Motor settings .......................................... 45

11.22 Rudder -> Elevator mixer ...................................... 45

11.23 Snap roll function .................................................. 46

11.24 Airbrake mixer ...................................................... 46

11.25 Fuel MixXture adjustment ..................................... 47

12. LINKAGE Menu-Helicopter ................................ 48

• Rx outputs for helicopter models ........................ 48

12.1 Function ................................................................ 49

• Control Hardware configuration ......................... 49

• Select trim levers ................................................ 49

• Trim settings ....................................................... 49

12.2 Swash ring ............................................................ 51

12.3 Swashplate settings ............................................. 51

13. Heli Model menü ................................................. 52

13.1 Flight condition (Idle up) ....................................... 52

• Copy flight condition ........................................... 53

• Set delay time ..................................................... 53

• Change priorities ................................................ 53

Contents

FX-20

CONTENTS PAGE

13.2 Pitch curve settings .............................................. 53

13.3 Throttle curve settings .......................................... 55

13.4 THR hold/ Autorotation settings ............................ 56

13.5 Swash mixer ......................................................... 56

13.6 Throttle mix ........................................................... 57

13.7 Pitch -> Rud (Revo) mix ....................................... 57

13.8 Gyro settings ........................................................ 57

13.9 Governor settings ................................................. 58

13.10 Fuel mixture settings ............................................ 59

14. Programming example for FX-20 Tx

example 4 flapped glider wing........................... 60

15. Tx software update ............................................. 82

16. Installation and aerial positioning of

2,4 GHz FASST Rx .............................................. 83

16.1 Power Down mode range testing .......................... 84

16.2 Switch harness ..................................................... 85

16.3 Servo leads ........................................................... 85

16.4 Interference suppression filter .............................. 85

16.5 Servo installation .................................................. 85

16.6 Servo travel and arms .......................................... 86

16.7 Linkage installation ............................................... 86

17. Operational advice ............................................. 86

17.1 Switch on sequence ............................................. 86

17.2 Metal to metal interference ................................... 86

17.3 Brushed electric motors ........................................ 86

17.4 Electronic ignitions ................................................ 87

17.5 Rx battery capacity/operating time ....................... 87

18. Guarantee ............................................................ 87

19. Liability exclusions ............................................. 87

20. Homologation ...................................................... 87

21. Declaration of conformity .................................. 87

22. Compliance Information Statement .................. 88

23. Accessories ........................................................ 89

24. Service addresses .............................................. 91

25. End of life disposal ............................................. 92

Safety Notes, observe at all times

Please take the trouble to read right through these instruc-

tions before attempting to use the equipment for the first time,

paying particular attention to the Safety Notes. If you are a

beginner to radio-controlled model aircraft or helicopters, we

recommend that you ask an experienced modeller for help, as

you are bound to need support and advice initially.

This radio control system is designed and approved exclusi-

vely for use with radio-controlled models. If you use the equip-

ment for any other purpose, Robbe Modellsport will accept no

liability for the consequences.

SAFETY NOTES

Radio-controlled models are not toys or playthings in the usual

meaning of the term, and young people should not operate

them under fourteen years of age unless an experienced adult

is available to supervise them. Building and operating these

models requires technical expertise, manual skills, a cautious

attitude and safety-conscious behaviour. Errors, negligence

and omissions in building or flying these models can result in

serious personal injury and damage to property.

The manufacturer and vendor of the equipment have no

means of checking that your models are built and operated

correctly, and for this reason we can do no more than bring

these hazards expressly to your attention. We deny all further

liability.

Technical faults, whether electrical or mechanical, can result

in electric motors bursting into life unexpectedly, causing other

parts to come loose and fly around at high speed. Switching

on the receiving system when the transmitter is not active can

also have the same effect.

In either case there is a serious risk of injury. Propellers,

helicopter rotors and all other rotating objects, which are

driven by motors or engines, represent a constant hazard

and a potential source of injury. Avoid touching such

parts at all costs. It is a sobering thought that a propeller

revolving at high speed could cut off your finger.

Do not stand in or close to the primary danger area around the

propeller or other rotating parts whenever the electric motor

is connected to a drive battery. Take care to keep all other

objects from making contact with revolving parts. Protect your

radio control system from heat, dust, dirt and damp, and do

not subject your equipment to excessive heat, cold or vibra-

tion. Radio control systems should only be used in “normal”

conditions, i.e. within a temperature range of -15°C to +55°C.

Use only the recommended battery chargers, and super-

vise the procedure when charging batteries. Please read

and observe our safety notes regarding charging the bat-

teries. Overcharging, or incorrect charging methods can

result in the batteries exploding or bursting into flames.

Always maintain correct polarity.

Avoid subjecting this equipment to undue shock or pressure.

Check your system regularly for damage to cases and wiring.

If a unit gets wet or is damaged in a crash, it should not be

used again even after you have dried it out and checked it tho-

roughly. The only safe course of action is to replace damaged

items, or at least have them checked by the robbe Service.

Faults caused by damp or crash-induced shock may not be

obvious to the layman, but after a short period of further use

they may cause catastrophic failure. It is important to use only

the components and accessories which we expressly recom-

mend, and always use genuine robbe-Futaba connectors. It

is not permissible to make modifications of any kind to the

system components.

Note:

2,4 GHz FASST technology can be used for all model- air-

craft and surface- (marine and vehicle) models.

ROUTINE PRE-FLIGHT CHECKS

• Always extend the transmitter aerial fully before operating

your model, and check that it is firmly engaged in its socket.

• Ensure that the throttle stick is at the stop / idle end-point

before you switch the receiver on.

• Always switch the transmitter on first, then the receiver.

• Always switch the receiver off first, then the transmitter.

• Carry out a range check before the flight or run.

• Have you selected the correct model memory?

• Check all the working systems. Ensure that the control sur-

faces respond to the stick commands in the correct “sense”

(right stick = right rudder etc.), and that the travels are as

recommended.

• Are all the mixer functions and switches set correctly?

• Are the batteries sufficiently charged?

• If you are not sure of any point - don’t fly, as this would

endanger yourself and anybody else at the site.

OPERATING THE MODEL

• Never fly over spectators or other pilots.

Safety notes

FX-20

• Do not fly in any way, which could endanger humans or ani-

mals.

• Never fly close to high-tension overhead cables or residen-

tial areas.

• Don’t operate your model in the vicinity of canals, locks or

other public waterways.

• You must not operate your model from public roads, motor-

ways, paths, squares etc.

Never operate your equipment in stormy weather.

Don’t “point” the transmitter aerial straight at the aeroplane

when flying. The signal generated by the transmitter is at its

weakest in an imaginary line extending straight from the aerial.

It is always best for the pilot to stand in a position where the

long side of the aerial points towards the model.

INSURANCE

Ground-based models are usually covered by standard per-

sonal third-party insurance policies. To fly powered model air-

craft you will need to extend the cover of your existing policy,

or take out a specific policy. Check your insurance and take

out new cover where necessary.

1. CONTENTS

Contents: FX-20 2,4 GHz NO. F 8072

1 FX-20 G 2,4 GHz FASST transmitter

1 7,2 V 3400 mAh LiPo transmitter battery

1 R-6108 SB 2,4 GHz FASST receiver

1 Switch harness with charge socket

1 12 V Lithium battery charger, 2 A

1 110 ... 230 V AC switch-mode PSU, for charging the main

supply

RECOMMENDED ACCESSORIES:

Trainer cord FF9 > FF9 No. F1591

Trainer special cord No. F1314

Flight simulator adapter lead FF9 No. 8239

Charge lead T8 FG No. 8260

Receiver battery 4.8V 1400 mAh No. 4551

Spare Tx battery LiPo 7.2V 3400 mAh No. 4846

Wireless Trainer System No. F1414

Rx charge lead No. F1416

Transmitter case No. F9906

Ali. Case for tray Tx No. 8899

Stick switch FX-20 No. 8051 - 8053

Joystick short No. F1526

Neck strap mounting FX-30 No. 8384

Neck strap mounting FX-30 + hand rast No. 8381

Senderpult FX-30 CFK No. 8491

2. GENERAL DESCRIPTION

With the FX-20 system the range of robbe Futaba console

transmitters is extended downwards, so permitting a low-cost

entry point to 2.4 GHz technology.<br/><li>The FASST system

is a Spread Spectrum System with Frequency Hopping (FHSS).

2.1 FX-20 TRANSMITTER

• The FASST system is a Spread Spectrum system with Fre-

quency Hopping (FHSS). It is therefore permitted to trans-

mit a maximum power of 100 mW EIRP. This gives it ade-

quate reserve even for large-scale model aircraft and jets.

• Maximum security from same-channel interference, vir-

tually interference-free and insensitive to electrical smog.

• Focal point of the transmitter is the large, high resolution

128 x 64 Dot graphic display with backlighting for excellent

readability.

• The elegant and clean design of the system is created using

the new Cap-Touch-System. A contact-free capacitive sen-

sor that will function like a 3D Hotkey. It has a smooth, non-

porous display with no protruding user controls.

• Easy programming using the graphics driven user interface,

the menu structure and operation are largely the same as

the FX30 systems, genauso wie das moderne und prakti-

sche Gehäuse Design

• The software is in 8 languages: English, german, french,

Italian, Spanish, Czech, Russian or Dutch.

• The joystick coupling mechanism has twin ball bearings

and is designed for Universal mode. They can be easily

converted from „throttle left“ to „throttle right“ by the owner.

• The FX-20 transmitter features the new rotary stick trim-

ming. This type of trimming combines the advantages of tra-

ditional analogue trims with those of digital trimming. With

just one movement, the direction and size of trim required

will be set and automatically stored.

• The linear slider controls are very practical to use for auxili-

ary control functions such as gyros, flaps or speed control-

lers.

• The system consists of ten channels (8 proportional and 2

switched) and these are all freely assignable.

• The transmitter is supplied fully equipped with 2 analogue

rotary, 2 linear slide controls and 6 switches.

• Comprehensive software provides all the essential facilities

and extensive functionality for power models, gliders and

helicopters.

• Plenty of freely programmable mixers are available with a

choice of 5-point curves for setting up very complex mixer

functions.

• Integrated Trainer system with individual control func-

tion transfer. Freely configurable channel assignment for

instructor and student.

• using an SD card, the owner can update the software to the

latest version.

• Twenty internal model memories, with infinite expansion

using SD card-3862 models= 2GB.

General

FX-20

2.2 R-6108 SB RECEIVER

Full range 8/18-channel 2.4 GHz FASST receiver, slimline and

lightweight for models with narrow fuselage/hull. With a serial

bus (S-BUS) - system for up to 18 channels and so perfect for

large scale model aircraft. Outputs 1...8 can have 8 traditional

analogue or digital servos attached. The R 6108SB receiver

has a switch to select between digital and analogue servos.

This makes the signal pulse for digital servos at the outputs 1-6

even faster, resulting in even shorter response time.

New: S-BUS output

Up to 18 of the new, programmable S-BUS servos or other

S-BUS components such as battery switch PSS2018, HC-3

Xtreme, gyro GY 520, etc. can be connected in series to this

output. Using digital addressing, the servo will only react to

information which has the correct servo address.

Compatible with 2.4 GHz FASST RF modules TM-8, TM-10,

TM-14 and FASST transmitters from 8 channel upwards

and in Multi mode.

2.3 Receiver binding

General advice about 2,4 GHz Radio-control systems

The 2,4 GHz System operates differently to previous radios

that work in the 27-40 MHz frequency band.

• The radiation of 2,4 GHz signals works in a straight line and

therefore it is vital to maintain line of sight contact with the

model.

• Large obstructions between Tx and Rx can reduce or block

the signal.

• Close to the ground, the Tx signal is weaker than with 27-40

MHz radios.

• On misty days or wet ground can reduce the ground range

considerably.

• If the model is close to the ground and there is an obstruc-

tion such as (person, vehicle, object etc.) between the Tx

and Rx, than the range can be much reduced.

BINDING (EASY-LINK)

Pressing the “Easy-Link” button, automatically stores the

unique code number of the Tx (130 Million codes). The receiver

only will respond to the signal of the specific transmitter with

this “Binding” process.

RECEIVER STATUS LED INDICATION (R6008HS)

• During binding, no other FASST System should be operated

nearby.

• Place the transmitter and receiver close together (approx.

50cm or closer)

• Switch on Tx

• Switch on Rx power supply

• Hold the Easy Link

button (ID Set) on the

receiver for at least 1

second and release

again to “bind” the

receiver to the transmit-

ter.

• When the binding has taken place, the Rx LED illumina-

tes green. This fixed coupling of the transmitter to receiver

offers the best conditions for an improved suppression of

interference compared to traditional systems. Whereas, a

digital filter can only filter out the control impulse of the asso-

ciated transmitter, in this way interference and influences

from other transmitter are very effectively suppressed.

• It is possible to “bind” several receivers to the same

transmitter. Should the “binding” of other transmitters be

required, by simply pressing the Easy-Link button after swit-

ching on the power will re-bind the receiver to a new trans-

mitter.

ICONVERTING FROM ANALOGUE TO DIGITAL SERVOS

The factory setting is set to “Normal” mode and suits the com-

monly used Analogue servos. To achieve a quicker reaction on

channels 1-6, which leads to a further improved reaction time

when using Digital Servos, use the following method. Setting

of the digital mode:

1. Switch off the receiver after “binding”.

2. During the switching on of the Rx, press the Link/Mode but-

ton for 2-3 seconds, The red and green LEDs will flash.

3. Release the Link/Mode button. The monitor LED turns

green.

4. Switch the receiver off, so that the settings are stored.

Converting back from digital to analogue mode functions in the

same principle. The monitor LED flashes red and green to in-

dicate the switch-over to analogue mode when pressing the

Link/Mode button. On releasing the button, the red LED will

be illuminated.

Legend:

LED red: = Analogue mode

LED orange: = Digital mode

Note:

Channels 1-6 operate in digital mode, channels 7+8 always

operate in analogue mode. The analogue-digital changeo-

ver also affects the S-BUS output, which is automativally

processed by S-BUS and digital servos.

Analogue mode must be selected if analogue servos are

to be operated at the S-BUS output via a PWM adapter.

Otherwise the higher frequency will be irreparably dama-

ged the analogue servos! Double-check every new setting

on your receiver!

Take care that during this process athat no other FASST

transmitters are switched on in the local vicinity.

General

LED green LED red Status

Off Solid

No signal reception

Solid Off

Receiving signals

Flashing Off

Receiving signals but ID

is unmatched

Alternate flash Unknown problem

Key “ EASY LINK” LED

FX-20

2.4 CONNECTING THE SERVOS USING PWM

Connecting the servos and power supply:

R6108 SB 2,4GHz receiver (Rx)

Outputs 1...7: 1 ... 8 Proportinal channels for Servos.

Connection: B = Receiver battery / channel 8

The switched putputs DG1+DG2 are accessible on the 8 chan-

nel R-6108 SB receiver only via the S-BUS outputs (channel

9+10).

Note:

Connecting a large number of powerful or digital servos, the

continuous current rating (3A) of the supplied switch harness

will be insufficient. It will be necessary to use an appropriate

high current power supply (the so-called battery backer) for

the receiver and servos. Your dealer will be able to advise on

suitable equipment

S-BUS CHANNEL ALLOCATION

In contrast to standard servos, where the receiver has a single

PWM pulse per servo channel, S-BUS systems no longer have

classic individual servo channel alloocations.

Information relating to how far and in which direction the servo

is to run is digitally coded, similar to the PCM system for trans-

mitters. The pulse telegram additionally contains the direction

and travel of all 18 servo channels as well as the channel

address. Each servo is allocated a channel number and it se-

lectes the channel number as well as the travel and direction

information from the pulse telegram. It responds only to com-

mands that contain the correct channel number. This digital

filter increases the servos‘ immunity to interference.

The allocation of the S-BUS channel number can be ade in

one of three ways:

A channel number can be allocated to the servos also via the

receiver. Use the following procedure:

1. Plug servo jumper into „DATA“ socket at the receiver.

2. Switch on receiver.

3. The set mode is indicated by flash sequences

Mode A: red LED flashes 3 times

Mode B: green LED flashes 3 times

4. To change the mode, press and hold the „LINK“ button for

about 2 seconds. Changing the mode the red and green

LEDs will flash. releasing the „LINK“ button, the new mode

setting will be displayed.

5. Switch off receiver and unplug servo jumper.

The servos can now be connected to the S-BUS output of the

receiver via the S-BUS hub or V-lead. Check functions before

starting up!

The handy SBC-1 Programmer No. F1696 which can also be

used to allocate channels to the S-BUS servos and S-BUS

PWM adapters is recommended on the flying field.

Servo addressing can be carried out with the PC-LINK program

which can be downloaded free of charge in the download sec-

tion on the robbe homepage.

With this program you can additionally program functions such

as servo mid-point adjustment, end-point adjustment, servo

speed, start-off characteristics, etc. individually for each servo.

Note:

The USB adapter CIU-2 No. F1405 is required to program

the servos and allocate the channel number via a PC.

General

Channel

1 ... 8

B = Connection

Receiver Battery

Monitor LED

Receiver

Battery

Plug servo jumper

Output

Channel

Mode A Mode B

1 1 9

2 2 10

3 3 11

4 4 12

5 5 13

6 6 14

7 7 15

8 8 16

FX-20

CONNECTION TO S-BUS OUTPUT

Up to 18 (16 prop channels, 2 switching channels) of the new,

programmable S-BUS servos can be connected in parallel di-

rectly to this output. Using digital addressing, the servo will only

react to information which has the correct servo address

To use the S-BUS output, connect corresponding S-BUS ser-

vos via the S-BUS HUB No. F1697 or No. F1698 or V-lead No.

F1423 to the S-BUS connection at the receiver.

Note: Individual S-BUS servos can also be connected di-

rectly.

MIXED CONNECTION

Note:

The maximum S-BUS channel count is 16+2. However, only

the same number of channels as the transmitter posesses are

available for use (currently 8+2 or 12+2).

Important:

A battery connected directly to the receiver can make available

current at 3 A permanently and 6 A short-term.

A second battery connection should be made on to the connec-

tor strip of the receiver for higher power requirements. The cur-

rent carrying capacity of the receiver increases from 5A to 10

A continuous. Further power connection for S-BUS are under

preparation.

We recommend the use of the battery switch PSS 2018 No.

F1660 for higher currents!

Hubcable 30 cm No. 88830030

HUB-4 with power current conection No. 8884

Accessories:

The S-BUS PWM adapter No. F1695 makes it possible to use

the new S-BUS system in existing models and servos. Adap-

ter to connect 3 standard servos to the S-BUS. The signal is

converted for each individual outputfrom S-BUS to PWM. The

outputs can be configured with e the same or different chan-

nel numbers. Channel number allocation is made either using

a PC with the PC LINK software, or independent from the PC

using the handy S-BUS programmer SBC-1.

General

S-Bus

Connec-

tion

Hubcable No. F1697

max. curent 3A / 6 A continuous

max. curent 6A / 12 A continuous

max. current 6 A / 12 A continuos

FX-20

2.5 RECEIVER OUTPUT CONFIGURATION FOR AIRCRAFT Key: control terminology

1 Ail: 1 aileron

2 Ail: 2 ailerons

2 Ail+1flap : 2 ailerons + 1 camber flap

2 Ail+2flap 2 ailerons + 2 caqmber flap

2 Ail+2flap+2brakes: 2 ailerons + 2 flaps + 2 airbrakes/spoilers

Only Multi ch.: only at Frequency “MULTI”

V1 Spoiler Virtual channel 1-4, used for control

functions, e.g. Ailvator

NEW SYSTEM FOR FUNCTION ASSIGNMENT

The choice of model type serves as the basis for the mixer

functions and the model type selection will automatically sug-

gest the mixer functions and the channel assignment. We re-

commend that when possible, to retain these as it keeps an

output layout standard. Nevertheless, any control input may be

assigned to any channel.

The ‘FUNCTION’ menu will clearly display to which output the

appropriate servo must be connected and which input will con-

trol it. On functions that require 2 or more servos, the relevant

control will also be configured.

Within a model type, there is only a small variation in configu-

ration; due to the number of control surfaces only the number

of servo channels used will increase.

This is different when changing a model type. If the model

type is for example changed from conventional tail to a tail

with 2 servos (Ailvator) the function allocation will be forced

to change.

This is also true with glider models, with and without motors, as

well as for flying wing.

General

Model type Power model

Rx output 1 aileron 2 aileron 2 ail+1flap 2 ail+2flap

1 Aileron Aileron Aileron Aileron

2 Elevator Elevator Elevator Elevator

3 Throttle Throttle Throttle Throttle

4 Rudder Rudder Rudder Rudder

5 Retract Retract Retract Retract

6 free Aileron 2 Flap Aileron 2

7 free free Aileron 2 Flap

8 only Multi ch. only Multi ch. only Multi ch. Flap 2

9 - V1 Spoiler V1 Spoiler V1 Spoiler

Tipo de modelo: Aeromodelo planeador

Rx output 1 aileron 2 aileron 2 ail+1flap 2 ail+2flap 2Ail+2flap+2brakes

1 Aileron Aileron Aileron Aileron Aileron

2 Elevator Elevator Elevator Elevator Elevator

3 Throttle Throttle Throttle Throttle Rudder

4 Rudder Rudder Rudder Rudder Aileron 2

5 free free free free Camber Flap

6 free Aileron 2 Camber Aileron 2 Camber 2

7 free free Aileron 2 Camber Brakes

8 only Multi ch. only Multi ch. only Multi ch. only Multi ch. Brakes 2

9 - V1 Spoiler V1 Spoiler V1 Spoiler V1 Spoiler

FX-20

3. TECHNICAL DATA

3.1 FX-20 TRANSMITTER

Control channels: .............................................. 8+2 channels

Frequency band: ...........................................2,4...2,4835 GHz

Alternative: ......................................................2,4...2,454 GHz

Carrier system: ..................................................................FSK

Data resolution: ........................................................2048 kHz

Power supply: .............................. 7,2 V LiPo-battery / 3,4 Ah

Power consumption with RF: ......................... approx. 220 mA

Dimensions: ..............................................205 x 220 x 55 mm

Weight (with battery): .........................................approx. 885 g

3.2 R-6108 SB 2,4 GHz RECEIVER

Operating voltage: .................... 4,8 - 6 V (4-5 cells NC/NiMH)

Current consumption: ............................................. ca. 50 mA

Number of channels: .........................................................8/18

Data resolution: ........................................................2048 kHz

Frequency band ........................................... 2,4...2,4835 GHz

Alternative: ..................................................... 2,4...2,454 GHz

Frequency channels:...................................................... 36/22

Carrier system: ..................................................................FSK

Weight: ..............................................................................14 g

Dimensions: ...............................................47 x 25 x 14,3 mm

Temperatur range: ........................... ......................-15/+55

Aerial lenght: .................................................... approx. 13 cm

System range:

Ground- Ground Range: More than 2000 metres (with recei-

ver 1.5 m above ground level and visual contact)

-Ground - Air : More than 3000 metres range (with visual

contact)

Antenna

Volume / rotary

control “RD)”

Switch “SD”

Switch “SG”

Switch “SH”

Linear slider “RS”

Elevator / Aileron

stick

Elevator trim

Aileron trim

Key “LKN”

Key “MDL”

Cap Touch Sensor

Key “RTN”

Key “S1”

Key “SYS”

General

4. FX-20 TRANSMITTER CONTROLS

Volume / rotary

control “LD)”

Switch “SE”

Switch “SB”

Switch “SA”

LED monitor

Linear slider “LS”

Throttle /Rudder

stick

Throttle trim

Rudder trim

On /Off switch

LC-Display

FX-20

4.1 TURNING TRANSMITTER ON AND OFF

• Slide the main power switch on the Transmitter (Tx) to the

right.

• The right hand red monitor indicates RF radiation after first

monitoring the local RF environment.

• The Display shows the symbol for RF radiation

Upto 36 FASST transmitters may be operated simultane-

ously. If the band is full, then the Tx will not radiate RF and

waits for a few moments to retry.

Note:

An SD-card increases the start-up phase time somewhat, be-

cause all the data must be read from the card.

Attention:

Do not turn off during the initialization phase (Left-hand moni-

tor-LED flashes red), as this may damage the settings.

SWITCHING THE TRANSMITTER OFF

• Slide the main power switch on transmitter downwards

• The RF radiation will stop and the data stored in the working

memory will be stored either in the internal memory or writ-

ten to the SD-card.

If the Tx is switched on again during the power-off and

memory storage phase, the data back up will be ignored.

4.2 LED Monitor

Two Status LEDs are located on the front face, which indicate

the Tx status by means of a flash sequence.

General

LED on:

Tx RF radiating

LED flashes:

Teacher system

in operation

LED off:

RF switched off

LED on:

Tx switched on

LED flashes:

Tx battery low

4.3 STICK ADJUSTMENT

The FX-20 Tx has new precision gimbal sticks, fitted with ball

bearings and long-life potentiometers to the latest industry

standards. Emphasis has been placed on the best control “feel”

around the neutral point of both stick axes.

EXTENDING STICK LENGTH

The stick length is fully adjustable and may be set to the opti-

mum length to suit the pilot’s need.

• Loosen parts A and B

• Adjust stick length to the desi-

red position

• Lock part A and B

ADJUST SPRING CENTERING TENSION

The spring return centring force of the joysticks can be ad-

justed to suit the indivual control feel needs of the pilot. Slide

the locking catch on the rear of the case towards the case top

(arrow). Using a small cross head screwdriver, adjust the spring

tension as shown.

4.4 LIQUID CRYSTAL DISPLAY (LCD)

The large, clear-view and high contrast LCD graphics monitor

(with 128 x 64 dots) supplies the user with all the necessary

information required for programming and operation.

KEY-LOCK

So that no unwanted changes to the programs occur during

flight operation, the S1 key serves also as a key-lock. To lock/

unlock the keys, press S1 key for 1 second. (See illustration).

The complete navigation description will be found on page 16.

Part A Part B

Key Lock

FX-20

4.7 CHANGING THROTTLE FUNCTION

The Tx is delivered as Mode 2 as standard, left stick fitted with

ratchet throttle and right stick with self-centring. Either stick

may be chosen for use as a positionable throttle control.

Remove the control cover plate by loosening the marked screw

and transfer to the other stick unit, refit the screws.

There are four different Stick Modes (Mode 1-4):

4.6 ACTIVATION OF THE STICK RATCHET FUNCTION

(STICK MODE)

Aircraft models will usually have a ratchet fitted to the throttle

stick to hold it in any set position. To do this, disconnect the

self-centring of the throttle stick by tightening the cover plate

screw on the relevant stick. This will disconnect the stick self-

centring. Additionally, the throttle ratchet is already fitted to

this plate, which gives an immediate ratchet function. To make

the ratchet “softer”, carefully bend the ratchet plate upwards.

For helicopter pilots, an additional friction plate is included to

replace the ratchet. This is screwed to the inner face of the

joystick plate.

In the System menu, sub-menu “H/W Setting”, select STICK

MODE. If mechanically changing the stick mode to Mode 1, 3

or 4 i.e. changing from the, as delivered, Mode 2 with throttle

on left hand stick, then the software must be also updated ac-

cordingly see also STICK MODE on page 23.

Note:

When changing to a new model memory, the last stored „Stick

Mode“ setting is automatically used.

4.5 DIGITAL TRIM LEVERS

The 4 digital trim controls for the sticks (T1…. T4) are rotary

trims located near the sticks. You can freely assign these for

use as trims, as other control inputs or as inputs for mixer func-

tions.

Each time, the trim value to the default Step change. Reached

the neutral position of the trim-(Center) or the neutral run over,

so an acoustic signal.

The current trim position is a graphic in the Start display dis-

played.

General

Unscrew right hand

stick cover plate and

rotate 180

Screw cover plate to left

stick unit

MODE 1:

Aileron right

Elevator left

Throttle right

Rudder left

MODE 2: (as delivered)

Aileron right

Elevator right

Throttle left

Rudder left

MODE 3:

Aileron left

Elevator left

Throttle right

Rudder right

MODE 4:

Aileron left

Elevator right

Throttle left

Rudder right

4.11 SD CARD MEMORY MODULE

An SD card up to 2 GB may be obtained

separately to allow different models to be

stored. We recommend using a fast SD

card, for example from Sun-Disk. It is pos-

sible to use SD cards from other manufac-

turers in the Digital Camera industry, and

due to the large variety of types, it is not

possible to guarantee their problem free

operation.

IINSERTING THE SD CARD

Insert and change the SD card as follows:

• Switch off Tx

• Open the battery cover by sliding to the right hand side

• The SD card slot will now be visible

Hold the SD card, so that the nose lock faces left. Insert card

fully into card slot, it will be located when a click is heard.

FORMATTING SD CARD

Before you can write data to the SD card, it is necessary to

format the memory first as follows:

• Plug card into Tx and switch on power. The following mes-

sage will appear: THIS CARD HAS NOT BEEN INITIALI-

ZED. CANCEL / FORMAT

• If the FX-20 is ready to format, move the cursor to [FOR-

MAT] and touch the RTN button. This needs to be confir-

med with OK, (To cancel formatting, move the cursor to

[CANCEL] and touch the RTN button).

• FORMATTING CARD will appear in the display and pro-

gress indicated by a bar diagram.

• Dependent on the size of the card, this process can take a

few minutes.

• Following successful formatting, FORMAT END will appear

in the display.

• The Tx will automatically return to Start Menu

FX-20

4.8 ROTARY CONTROL KNOBS

The rotary “volume” knobs LD and RD serve as analogue con-

trol inputs, which are freely assignable to chosen functions.

They possess a fine ratchet and give an acoustic beep when

reaching their mid- position.

The knobs are marked to give also an optical indication of their

position.

4.9 LINEAR SLIDER CONTROLS

Both the slider controls can be used as trim controls or as con-

trol inputs. They have a neutral detent and give an acoustic

beep when reaching their mid-position.

4.10 AERIAL

To achieve the optimum radiation patter, the moveable Tx ae-

rial should be positioned so as not to “point” directly at the

model (see photo).

Never point the aerial at the model, as the aerial longitudinal

axis has the weakest radiation pattern!

Never touch the aerial during flight as this much reduces the

radiated power.

General

SD Card slot

locking lug

software update switch

FX-20

REMOVING SD CARD

Press lightly forwards on the end of the card until you hear a

click. The SD card will slide from the slot and can be removed.

Note:

Do not change the card during the read or write process as this

can lead to loss of all data on the card.

LOADING DATA STORED ON A PC

A separate SD card reader/writer is needed to load the soft-

ware update from a PC. These are available from good electri-

cal and digital camera stockiest.

The Data on the SD card are not in Windows format and there-

fore are not visible on the PC.

Special software “Futaba File System Utility” to manage, (Save

and delete) the Data may be found in Download area of the

robbe Support Server http://www.robbe.com/rsc.

DATA SECURITY

The lifetime of an SD-card is more than 100.000 write cycles.

Should it be that your card read/write device is used a lot for

a long period, it can lead to difficulties with read/write of the

data, and the card will need replacing? We recommend that

you make a back up copy of the data, as we cannot take any

responsibility for the security of any data you may store.

The Data storage on the SD-card as well as in the Tx is made

without any power required. Changing the Tx battery has no

effect on the stored data.

La memorización de los datos en la tarjeta SD se realiza sin

corriente. Al cambiar la pila de la emisora, los datos quedan

grabados.

MEMORY CAPACITY

Internally, the Tx has 20 model memories as standard. An opti-

onal SD card can be used as a medium to expand the memory

capacity, and the Tx can accept cards from 32 MB upto 2 GB.

One SD card with 2GB can have 3862 model memories stored.

The SD card may also be used as a medium for the user to

upload any software updates from a PC to the Tx. The software

for this is in the Download area of the robbe website home

page.

Update disscription see page 64

ADVICE FOR USING SD CARDS

• Don’t remove the SD card during the memory back-up pro-

cess.

• Keep strong magnetic and electrical fields away from the

SD card. Data can be corrupted or lost.

• Keep out of humid conditions and away from direct sunlight.

• Do not allow dirt, water or other fluids to come into contact

with the card.

• When inserting or removing the card, always grip it by the

corners.

• Always insert the card the correct way around.

• Only insert or remove when Tx is turned off.

5. REMOVE/CHANGE THE TRANSMITTER BATTERY

• Turn Tx off

• Unlatch the back panel at the top and fold it open, taking

care not to damage the lower locating lugs.

• Undo the retaining bands.

• Disconnect the battery connector from the transmitter by

pulling on the connector itself (not on the wires).

• When re-installing the battery in the transmitter please note

that the battery lead must face the right.

• Plug in the connector, taking care to maintain correct pola-

rity.

• Re-fit the retaining bands.

• Engage the lower locating lugs of the back panel. Fold the

back panel up into the correct position and engage the

top latch. Ensure that no wires are snagged between the

panels.

Note:

Never remove battery when the monitor LED is flashing. This

could cause damage to the stored settings and the memory

itself. If this occurs, don’t use the Tx and return to robbe service

department.

General

FX-20

6. RC CHARGER, CHARGING THE TRANSMITTER

BATTERY

The RC charger included in the set is suitable for charging 7.4

Volt Lithium batteries, and features a voltage-controlled automa-

tic cut-off circuit (8.4 Volts). The charge current is approximately

2 A.

It can be connected:

• to a 12 V car battery or 12 V DC mains PSU via the car cigar

lighter adaptor (supplied)

• or to a mains socket (110 … 230 V AC) using the mains adap-

tor (also supplied).

Notes on handling and charging the transmitter battery

• Connect the 230 V mains charger to a mains power socket.

• Connect the plug to the 12 V Lithium charger.

• The red monitor LED will now light up.

• Locate the charge lead attached to the 12 V charger, and con-

nect it to the transmitter.

• The charge monitor LED now lights up red to indicate that char-

ging is in progress; the charge current is around 2 Ampere.

• The charge time is around 3.5 hours if the battery is initially

discharged.

• When the charging is nearly finished (90%), the charge control

LED changes to green. The battery can be removed from the

charger and the the process takes approximately 3 1/2 hours

to charge a discharegd battery (No 4846).

• The remaining charge (100%) is complete after a total charge-

time of 5 hours.

Caution:

The battery pack (No. 4846) has an integral Equalizer- and Pro-

tection circuits, which protect the cells from overcharging. To

save energy, the battery should be removed from the charger

after 8 hours.

The battery must only be charged using the RC charger

supplied in the set! Chargers such as the Power Peak Infi-

nity and similar are not suitable, as these devices are desi-

gned for high cell-count packs, and generate a very high

voltage at the cut-off point, which could destroy the protec-

tive battery circuit.

• Li-Poly cells feature an extremely low self-discharge rate of

around 0.2% per day, and for this reason they can be stored

for long periods without problems. However, deep discharging

must be avoided, as the pack will sustain permanent damage

in the form of loss of capacity if discharged too far (the pro-

tective electronic circuit avoids this). After about five months

of storage - but at the latest when the pack voltage falls to 2.5

Volts / cell - it is essential to recharge the pack. Before any

protracted period of storage you should recharge the battery

to at least 50% of nominal capacity. After about five months

the pack should be recharged again.

FX-20

7. MENU STRUCTURE AND NAVIGATION

The FX-20- navigation is logical and easy to use. The „CAP

TOUCH SENSOR“, work as user controls.

The Menu-Structure is divided into three separate main menus,

System (SYS)-, Linkage (LNK) - and Model (MDL). From the

individual menus, one can choose from the different data sub

menus.

A few of the selection and data menus

have sub menus with more than one

“page”, e.g. the Modulation selection menu is accessible

directly from the Start display. (See also the Start display

description on the next page).

Note:

Since ignition spikes can interfere with the Cap Touch Sen-

sor, always keep the transmitter at least 70 cm away from a

running petrol engine!

• The S1 key is to leaf through page 1/2 to page 2/2 of the

selection menu levels.

Example: Page Number

• To enter the menus, double tap the “keys”- System (SYS)-,

Linkage (LNK) - or Model (MDL) –Menu, of the CAP TOUCH

SENSOR. One can also enter Servo Monitor direct from

the sub menus by double clicking on the „SYS“ key.

To return to the previous level, touch the “RTN” key once.

• To lock the CAP TOUCH SENSOR from accidental use,

press the S1 key for 1 second when in the Start Display.

The key lock symbol will appear in the display as illustrated

below.

• To unlock, press the S1 key again for 1 second.

• Holding the S1 key for longer than 1 second in a sub menu

will return you to the Start Display.

• The CAP TOUCH SENSOR is fitted with 4 user functions.

• To confirm a selection, press “RTN”, thereby giving an

“ENTER- command”. Touching the “RTN” key for a longer

period will return you to the factory default settings.

• A circular scrolling motion on the sensor outer ring chan-

ges the settings and will also navigate through the particular

menu items for selection.

• A clockwise scrolling movement will increase the data input

values and anti-clockwise will decrease them

Navigation

2 x

1Sek.

FX-20

Display

The most important information about transmitter programming is displayed in the Home/Start Display. These direct menus can be

accessed direct from the Start Display. Scroll the „CAP TOUCH SENSOR“ to highlight the required menu and touch the “RTN“ key

(see page 16) to select the relevant data entry menu.

8.1 START-DISPLAY FOR ALL MODEL TYPES

Timer 1

Display field of

Stopwatch 1. Mark

and confirm to

enter the ST1 ad-

justment menu.

Timer 2

Display of Stop-

watch 2,

Mark and confirm

to enter the ST2

adjustment menu.

Modulation indicator

Multi / 7channel

Mark and confirm to enter value adjustment menu

Large Stopwatch

Select and mark this field to enlarge the

stopwatch to full display. To reset to small

size, confirm again with “RTN“.

Start / Stop Timer

Highlight and press

„RTN“ for 1 second

to reset time.

SD card

indicator

System-Timer

Shows operating time

in hours, minutes and

seconds. Mark and

press „RTN“ for 1 sec.

resets the user name

time to 00:00.

Voltmeter

Voltage drops below 6,8 V and

an alarm sounds. Operation must

cease as soon as possible.

Model name

Mark and confirm the

model selection menu

Model-Timer

Shows operating time in hours, minutes and

seconds. Mark and press „RTN“ for 1 sec. re-

sets time to 00:00.

Trim memory

Stick trim position indicator

RF type indicator = On

RF type indicator = Off

Active Flight Condi-

tion indicator

(Only in Glider and Heli

mode)

Username

NORMAL

8. HOME SCREEN/ START DISPLAY DESCRIPTION

Reduce in size

FX-20

8.2 CONTROL INPUT / SWITCH SELECTION MENU

The FX-20 software contains a comprehensive control input

selection menu. Virtually all functions can be allocated to any

control input. It doesn’t matter whether they are for a switched

or proportional control or a flight condition. The appearance of

the selection menu is always the same.

As soon as a function is selected and confirmed with “RTN”,

the following Hardware Selection (H/W SELECT) menu will ap-

pear. Please note that this menu differs somewhat from func-

tion to function, according to the application, the display and

selection changes according to the selected application. The

example shows the switch selection menu for the “program-

mable mixer” function. All relevant controls, switches and trim

buttons are active and displayed.

J1...J4 = Control stick axes 1...4

SA...SH = Switches A...H

LD...RD = Left/Right hand rotary knobs

LS...RS = Left/Right hand linear sliders

ON/OFF = Switch position selection

T1...T4 = Digital Trim levers

SI...SJ = optional stick switches

Highlight the required switch or controls and confirm with the

‘RTN’ key. After a switch has been selected, move the cursor

to the “ON/OFF” field and define the switch position.

A sub menu will appear to confirm the switch position, the ex-

ample shows the switch, ‘SB’.

If a control stick or proportional control were selected, more

functions can be adjusted in the following display.

SET

To set the switch position, move the desired switch to the re-

quired position and move the cursor to SET and press “RTN”

key. The switch point is now indicated on the displayed bar

chart.

ON / OFF

This menu defines the switch direction sense, „NORM“ Normal

or „REV“ reverse direction.

MODE:

LINEAR

This setting divides the control area into separate ON and OFF

zones (see above bar chart graphic). Dependent on the control

position, the function is switched on and off.

SYMMETRICAL

Both switch points are symmetrically positioned about the con-

trol centre position. A switch position will be created as soon

as the control value exceeds the upper or lower limit values.

MEMORY

In the lower section of the display, the switch style key (OFF)

or (ON), are defined.

Exemple:

Taster aus Ruhestellung einmal in die getastet Position und

wieder zurück in die Ruhestellung bringen = Funktion einge-

schaltet.

Taster nochmals in die getastet Position und wieder in Ruhe-

stellung bringen = Funktion ausgeschaltet.

LOGIC-FUNCTIONS

Certain functions, such as flight condition can be also opera-

ted/switched with a logical cascade of two switches; this is the

so-called Logic-Function.

Select switch MODE (SINGLE) or with a logical coupling

(LOGIC).

Here are the following functions available:

• AND: Serial coupling of two switches

E.g. „SA AND „SB“ activate a function.

• OR: Parallel coupling of two switches

E.g. „SA“ OR „SB“ activates the function.

• EX-OR: EITHER -OR coupling or exclusion of defined swit-

ches. E.g. EITHER „SA“ OR „SB“ will activate the

function.

Switch selection

FX-20

8.3 TIMER-SETTINGS (Stopwatch)

Using the Timer-Menu, you are able to make all adjustments to

the electronic timers. The timers are displayed in two windows

of the display. You have permanent access to, for example,

the total flight time as well as the motor run time of an electric

model. The timers can be individually adjusted for every model.

Changing model memory will automatically load the custom

settings for each model. There is a choice of two timer opera-

tion modes; Count Down- (DOWN) and Count-up timer (UP).

Selecting “UP‘- timer, a maximum flight time may be entered,

e.g. dependent on tank capacity or the battery capacity. As

soon as the Timer is started, the time counts backwards, star-

ting from the entered value. The time remaining will be displa-

yed.

The Count-up timer starts at ‘0’ and displays the time since

activating the switch. During the last 20 seconds, an acoustic

signal sounds at 2 second intervals, in the last 10 seconds of

the programmed time, the stop watch alarm sounds every se-

cond. This is followed by a continuous tone for several seconds

after the programmed time has elapsed; the time will continue

to run with a negative value.

Mark with the „CAP TOUCH SENSOR“ the ‘TI1’ and „TI2“

Functions in Start-display and confirm selection with “RTN”.

The settings are entered here for TI1 and TI2. Mark the desired

function and confirm with the ‘RTN’- key. Timer 1 will be dis-

played as below:

• Select MODE (Count DOWN or UP)

Firstly you must choose whether the active Timer will func-

tion as a Count UP or Count DOWN stopwatch. To adjust,

mark the relevant field and adjust setting with the “CAP

TOUCH SENSOR“.

• Time setting

Move the cursor to the [ALARM] item and touch the RTN

button to switch to the data input mode. Set the time by

scrolling the touch sensor. [00]: [00]: [min]: [sec]. The maxi-

mum time setting is 59:59 (min: secs). Touch the RTN but-

ton to end the adjustment and return to the cursor mode.

• Switch setting

Move the cursor to the item of the switch you want to use

for the timer. One can use a switch to:

- RESET clock to zero.

- Start/ Stop the timer.

Other timer options can also be linked to the same switch, ac-

cess the switch setup screen by touching the RTN button. Se-

lect the switch and ON direction.

To reset the timer, the „RESET“ switch can be operated. There

is also the possibility, to activate ‘RESET’ oft he relevant timer

in the Start Display and confirm by pressing ‘RTN’-key.

• Memory Function

Activating this („ON“) stores the last stop time when chan-

ging model memories or turning off transmitter. When swit-

ching on again the stored time value will be used. This is

useful to record the total running time of a motor.

• Change the preset time

Timer1 and/ or Timer2 can be used to store model memory

timers this has the advantage that this Timer can count

up to 99 hours:59 minutes compared to a normal model

memory timer that can only count up to 59:59.

To set-up this timer mode, navigate using the „CAP TOUCH

SENSOR“ to „MODE“. Touch „RTN“ to select. Then scroll the

sensor to „MODL“ mode. The seconds and one-hundredths

display will be removed and only hours and minutes will be

appear.

• Alarm Piepser

By using the arrow, the alarm beeper settings can be set as

required.

In „DOWN“ mode and with the arrow pointing towards the bot-

tom, the beep sounds one minute before the set time is rea-

ched.

In „DOWN“ mode and with the arrow pointing towards the top,

the beep sounds 30 seconds before the set time is reached.

Note:

The FX-20 Tx has an automatic Timer, which reminds the

user how long the Tx has been switched on. If, after 30 mi-

nutes, there has been no control input operation of sticks,

switches etc., an alarm sounds. Move any control, the

alarm will be switched off, and the timer is reset to zero, if

required, turn off the transmitter.

Stopwatch

FX-20

9. SYSTEM-MENU

The System Menu sets up functions of the transmitter: This

does not set up any model data and the applied settings are

valid for all model memories. The exception is the Trainer sy-

stem, which will be adjusted for each model memory.

The exception is the Trainer system, which can be set in-

dividually for each model memory.

Call the system menu shown below by double clicking tou-

ching the SYS button twice at the home screen, etc..

Scroll the “CAP TOUCH SENSOR” to select the function and

the following display will appear:

TRAINER: Starts and sets the trainer system.

DISPLAY: LCD and backlight adjustment

USER NAME: User name registration

H/W SET: H/W reverse and stick mode

INFO: Displays the program version, memory,

SD card information, product ID, and

language selection.

Additionally, the user preferred language can also be se-

lected.

9.1 TRAINER SYSTEM

The FX-20 transmitter is fitted with trainer jack socket on the

left side of the transmitter case. This is also suitable when

using a flight simulator.

The Trainer system makes it easy for beginners to learn their

flying skills under the supervision of an experienced instructor.

Connect the two transmitters using the correct trainer

cord, which is available separately as an accessory from

your dealer. The FX-20 transmitter can be used as either as

the instructor or as the student transmitter.

Please take note of the following:

With 12+2 channel student transmitters fitted with TM-14

Module or G3-Modulation, the modulations can be selected to

be either 8- or 12-channel.

• With all other student transmitters, 8-channel PPM (FM)

Modulation must be selected.

• Connect Instructor and Student transmitters together with

the appropriate Trainer Cord.

• Turn on Student transmitter.

• Dependent on the instructor transmitter type, the student

transmitter will be powered up when the trainer cord is con-

nected. To stop any unwanted RF transmission from the

student transmitter occurring, remove the RF module or; if

using 2,4 GHz, switch the transmitter to Trainer mode so

that the RF transmission is turned off!

Important note:

Trainer operation with other robbe-Futaba radios can

only be made with transmitter fitted with the new, rectan-

gular 6 pole Micro Trainer Socket.

Transmitters fitted with 6Nx or 2S Lipo batteries will be powe-

red directly through Trainer Cord No. F 1591. (e.g. T12FG,

T12Z, T14MZ, FX-30, FX-40). Other transmitters with 6-Pole-

Micro-Trainer jacks and an 8-cell NC/NiMH battery will require

a special trainer cord No. F1314. This is fitted with an inte-

grated voltage converter (6 cells to 8) and stops the low

voltage alarm from sounding. (e.g. T4EX, T8 FG Skysport

T4YF, T4EX, T6EX, T7C, T9C, T10C).

• Check all functions are working correctly, operate Trainer

switch and check the student transmitter has full control.

• After releasing switch, the control must return immediately

to the instructor transmitter.

The software may be so set, so that either the student or the

instructor transmitter has control of the mix functions for the

model. Alternatively, MIX operation can be used where both

transmitters have the mix function to control the model.

The FX-20 transmitter can be used either as Instructor or Stu-

dent transmitter with any of the wide range of transmitters from

the robbe/Futaba range. There are a variety of transmitter trai-

ner cord combinations:

FX-20 transmitter may be used as instructor transmitter

with the following student transmitters:

For a wireless 2,4 GHz Trainer operation, we recommend

the Wireless Trainer System 2,4GHz No. F1414.

System Menu

Instructor Student Trainer cable

FX-20

Skysport T4YF, T4EX,

T6EX, T7C, T9C,T10C

Special Trainer cable

No. F 1314

FX-20

T8FG, T12Z, T12FG,

T14MZ, FX-30, FX-40

Trainer cable

No. F1591

2 x

FX-20

9.2 TRAINER

Highlight and select the „TRAINER option in System menu and

confirm with “RTN”.

On the 4 pages (1/4-4/4) of the „TRAINER” menu, all basic

settings for the Trainer System will be made.

TRAINER-SYSTEM AS INSTRUCTOR TRANSMITTER

On page 4, there are the following options available:

• ACT/INA:

ACT: Instructor function turned on

The display switches between „ON“ and „OFF“ dep-

dent, the switch is operated

INA: Student function switched off

Mode setting, ‘ACT’ = Instructor function turned on, ‘INA’ =

Student function switched off

• SWITCH:

Select the Trainer switch to be used to transfer control to/from

the student transmitter. Mark and confirm this option. The next

sub-menu can be used to define switch operation direction.

• 12/8 channel: Switch from 12 to 8 channel operation.

After making these basic settings, you can now set for each

channel whether after switching over; the student transmitter

operates alone or in MIX operation together with the instructor

transmitter. The different modes can be selected separately

for each function; a combination of modes for the different

functions is also possible.

Navigate to the channel to be changed in the ‘MODE’ menu.

Scrolling the „CAP TOUCH SENSOR“ the following possibili-

ties can be set.

• OFF:

This channel will not be transferred to the student transmit-

ter, and control will remain always with the instructor.

• FUNC:

FUNC mode (function mode): The model is controlled only by

signals from the student transmitter with all the instructor ‚s set-

ting (including all mix settings). (Reset the student‘s model data

to the default condition.) Switching between instructor and stu-

dent transmitter passes flight control between the transmitters.

• NORM:

The RF transmission is, effectively, switched from the instructor

to student transmitter. Each uses the function settings in the

respective transmitter.

This mode will hand over the relevant functions to the student

transmitter. Thereby, the student transmitter uses all the

mixer settings of the student transmitter which are nee-

ded for correct control of the model, when switching con-

trol to the instructor, all mix functions from the student

transmitter are used. Model control is passed between both

transmitters dependent on trainer switch position.

• MIX:

The model is controlled by signals from the instructor and stu-

dent transmitters. (Reset the student‘s model data to the default

condition.) The instructor and student control the model

using the setting and mixers within the instructor trans-

mitter.

STUDENT CHANNEL CONFIGURATION

This is used to define which control channels are passed over

to the student transmitter, also suitable for stick mode (Stick

Mode) 1/2 or 2/4. It is also possible to leave control of virtual

channels with the instructor, which previously was not possible

with Trainer systems. To select this function, use the „CAP

TOUCH SENSOR“ to scroll to the „STU.CH“ item and confirm

with „RTN“.

Example:

„STU.CH“ CH2 will be transferred to instructor channel 1 Ai-

leron.

System Menu

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ROBBE FX-20 User manual

Brand: ROBBE

Model: FX-20

Category: Toys & accessories

Type: User manual

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ROBBE FX-20 User manual

ROBBE FX-20 User manual

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