RadioLink T6EAP Instruction Manual

T6EAPT6EAP

For Radiolink T6EAP 6-channel

PPM(FM) modulation

Radio control system for aircraft

INSTRUCTION MANUAL

Technical support available at : http://www.radiolink.com.cn

Radiolink Electronic

TABLE OF CONTENTS

Introduction..................................................................................................1

Contents and specifications......................................................................................2

Glossary.............................................................................................................2

Introduction to the 6EAP system................................................................................3

Transmitter controls and descriptions ......................................................................3

Radio installation ....................................................................................................4

Receiver and servo connections ...............................................................................5

LCD and Programming controls.................................................................................6

Programming the T6EAP radio .................................................................................7

Model select / Data reset / Model name..........................................................7

Servo reversing...........................................................................................8

Dual rates...................................................................................................8

Exponentials...............................................................................................8

End Point Adjustments.................................................................................9

Trims..........................................................................................................9

Programmable Mixer..................................................................................10

Flaperon mixing..................................................................................... ...11

Flap trim...................................................................................................11

V-tail mixing.............................................................................................12

Elevon mixing................................................................................... ........13

Flow chart.................................................................................................14

Other T6EAP functions .............................................................................................15

Trainer switch...........................................................................................15

Flap control lever......................................................................................15

Adjustable-length control sticks.................................................................15

Changing the stick mode............................................................................15

Link Procedure..........................................................................................................21

INTRODUCTION

Thank you for purchasing the RadioLink's T6EAP digital proportional R/C aircraft system. If this is your first
“computer” radio, rest assured that it is designed to make initial setup and field-tuning of your airplane easier and more
accurate than would be if using a “non-computer” radio. Although this is a beginner or sport system with the
requirements of those flyers in mind, in order to make the best use of your T6EAP and to operate it safely, you must
carefully read all of the instructions.

Suggestion: If, while reading the instructions, you are unclear of some of the procedures or functions and become
“stuck,” continue to read on anyway. Often, the function or procedure will be explained again later in a different way
providing another perspective from which to understand it. Another suggestion is to connect the battery, switch and
servos to the receiver and actually operate the radio on your workbench as you make programming changes. Then,
you'll be able to see the effects of your programming inputs.

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CONTENTS AND SPECIFICATIONS

Transmitter: T6EAP
T6EAP Transmitter with programmable mixing
and 6-model memory.
Transmitting on 2,400 MHz band.
Operating system: 2-stick, 6-channel system
Modulation: FHSS
Power supply: 9.6V Ni-Cd battery Or 12V alkaline battery
Current drain: 250mA

Receiver: R6EH
6CH 2.4GHz Receiver.
Power requirement: 4.8V or 6V
Current drain: 9.5mA @ 4.8V
Size: 43x39x16mm
Weight: 13.5g

*Specifications and ratings are subject to change without notice

GLOSSARY

It will be helpful to understand the following terms before reading the rest of the manual. The terms are not in
alphabetical order, but are in a logical order that prepares the reader for understanding the next term.

Reversing (servo reversing) - A function that allows the user to determine the direction of response of each servo. If,
after hooking up the servos, a control on the model responds in the wrong direction, the user may change the servo's
direction so the control responds correctly.

Throw - When speaking of a control surface (such as an elevator or aileron), the throw is
the distance the surface moves. Control surface throw is usually measured at the trailing
edge of the surface and is expressed in inches or millimeters. The model in the diagram has
1/2" [13mm] of up elevator throw. Throw can also refer to the distance a servo arm (or
wheel) travels.

Dual rate (D/R) - On the T6EAP the dual rate switch allows you to instantly switch, in flight, between two different
control throws for the aileron, elevator and rudder. Often, different control throws are required for different types of
flying. (“Low” throws may be required for flying at high speeds where the model's response becomes more sensitive
and “high” throws may be required for aggressive aerobatic maneuvers or landing or flying at lower speeds where the
model's response becomes less sensitive.)

End point adjustment (E.P.A.) - Sets the overall, maximum distance the servo rotates in either direction. (No matter
where the dual rates are set, the servo will never travel beyond the limit set by the end point adjustment.)

Exponential - Normally, servos respond proportionally to control stick input from the transmitter (e.g., if the stick is
moved halfway, the servo will move halfway). However, with “exponential,” the servo can be made to move more or less
than initial stick movement (less servo movement is more common). Exponentials are commonly used to “soften,” or
decrease initial servo travel for the ailerons, elevators and rudder. This way, initial control stick inputs from the pilot
result in small servo movement for a smoother flying airplane.

*(Dual rates adjust the amount of servo travel. Exponentials determine where most of the travel will occur.)

Mixing - Two (or more) servos can be made to operate together either by mechanically joining the wires (with a Y-
connector) or by electronically “joining” them through programming functions in the transmitter. When servos are
electronically joined via programming, they are said to be “mixed.” Unlike joining servos with a Y-connector, when
servos are mixed electronically they can be made to move in opposition. Additionally, each servo's end points can be
independently set.

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INTRODUCTION TO THE T6EAP SYSTEM

IMPORTANT!: Always turn on the transmitter first, then the receiver. When turning off the system, always turn off the

receiver first. The object is never to have the receiver on by itself. Otherwise, the servos or control surfaces could be
damaged, or in the case of electric-powered models, the motor may unexpectedly turn on causing severe injury.

IMPORTANT!: Never collapse the transmitter antenna by pushing down from the top. If one of the segments becomes
momentarily stuck you may damage the antenna. Instead, collapse the antenna from the bottom, drawing in one segment
at a time.

Transmitter

The liquid-crystal display (LCD) on the face of the compact, ergonomically-designed case is easy to read and allows
rapid data input. The system also holds independent memories for six different models. The new, adjustable-length
control sticks provide an improved feel. External switches operate dual rates (D/R), landing gear, and trainer cord or
“buddy-box” capabilities. Programming features include servo reversing and E.P.A on all channels, dual rates,
exponentials and programmable mixing. Additionally, any one of four, factory-set, preprogrammed “wing-type” mixers
including flaperon, V-tail, elevon mixing may be selected.

Transmitter controls

The diagram and explanations briefly describe the functions of the T6EAP transmitter. Full instructions on how to operate

the controls are provided beginning on page 7.

NOTE: The diagram shows a Mode 2 system as supplied.

DESCRIPTIONS:

Aileron, Elevator and Rudder dual rate switch Aileron, Elevator and Rudder dual rate switch

Use this switch to “flip” between two aileron, elevator and rudder control throw settings. The throws can be set up
however you prefer, but generally, when the switch is “up” the throws are greater (“high rate”) and when the switch is
“down” the throws are less (“low rate”). This switch also flips between exponential rates (if used).
Flap control dial/Channel 6 - This dial operates the servo connected to channel 6 in the receiver if your model has
flaps this is the control used to operate them.

Neck strap hook - Mounting point for optional neck strap.
Aileron/elevator control stick - Operates the servos connected to channel 1 (aileron) and channel 2 (elevator) in the

receiver.

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Trim levers (all) - Used to shift the neutral or center position of each servo as labeled in the diagram.

NOTE: The throttle trim lever is intended for fine tuning the throttle servo when the engine is at idle. Throttle trim does not affect
the throttle servo when the throttle control stick is all the way up (so idle r.p.m. can be adjusted without affecting throttle settings
through the rest of the stick movement.)

Aileron/elevator control stick - Operates the servos connected to channel 1 (aileron) and channel 2 (elevator) in the
receiver.

Trim levers (all) - Used to shift the neutral or center position of each servo as labeled in the diagram.
Charging jack - Port for charging the transmitter batteries with the included battery charger.
On-off switch - Turn on or off the transmitter.
DATA INPUT lever - Used to change the values of the various functions displayed on the LCD screen.
Liquid-crystal display screen (LCD) - Displays programming modes and values entered.
MODE key - Used to scroll through and display the ten or eleven(PCM) different functions.
SELECT key - Used to display the values for the current function.
Throttle/rudder control stick - Operates the servos connected to channel 3 (throttle) and channel 4 (rudder) in the

receiver.
Trainer switch - Operates the trainer functions. To operate as a trainer switch the transmitter must be connected to
another transmitter via. a trainer cord (available separately).
Retractable landing gear switch/Channel 5 - Switch operates the servo connected to channel 5 in the receiver if
your model has retractable landing gear this is the control used to extend and retract the gear.
Antenna - Radiates signals to the receiver. Never fly a model without fully extending the antenna or you may create
interference to other modelers and decrease operational signal range of the transmitter. The antenna may be removed
and replaced with another in case it is inadvertently broken.

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 pull on the plastic connector instead.

* If any servo wires are not long enough to reach the receiver, servo extension wires (available separately) may be
used.

* Always mount the servos with the supplied rubber grommets rubber grommets. Do
not over tighten the screws. No part of the servo casing should contact the mounting
rails, servo tray or any
other part of the airplane structure. Otherwise, vibration will be transmitted to the servo
causing premature wear and/or servo failure.

* Note the small numbers (1, 2, 3, 4) molded into each arm on the 4-arm servo arms.
The numbers indicate how many degrees each arm is “off” from 90 degrees to correct
for minute manufacturing deviations from servo to servo.

1

234

* To center the servos, connect them to the receiver and turn
on the transmitter and receiver. Center the trims on the
transmitter, then find the arm that will be perpendicular to the
pushrod when placed on the servo.

1

234

1

2

3

4

90

Not 90

The trims on the radio should be centered.

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* After the servos are installed, operate each servo over its full travel and check that the pushrods and servo arms do
not bind or contact each other. Also make sure the controls do not require excess force to operate. If there is an
objectionable buzzing sound coming from a servo, there is probably too much resistance in the control. Find and
correct the problem. Even if there is no servo damage, excess battery drain will result.

IMPORTANT: NEVER cut the receiver antenna or mount it in the model folded back on itself. Doing so will change its
electrical length, possibly reducing the distance from the pilot that the model can be controlled (“range”).

RECEIVER AND SERVO CONNECTIONS

Connect the servos to the receiver to perform the functions indicated:

Receiver

output

channel

Function

1 Aileron -or-right flaperon -or-right elevon (for tailless models)

2 Elevator -or-left ruddervator (for V-tail models) -or-left elevon (for tailless models)

3 Throttle

4 Rudder -or-right ruddervator (for V-tail models)

5 Retractable landing gear

6

Flap -or-left flaperon

The diagram shown is for aircraft models only. Additional servos may have to be purchased separately.

Aileron Servo
(Ch1)

6 Channal
Receiver

Elevator Servo
(CH2)

Throttle Servo
(Ch3)

Rudder Servo
(Ch4)

Gear Servo
(Ch5)

Flap (or 2nd
Flaperon) Servo
(Ch6)

Flaperon Mode(Dual Aileron Servos CH1&6)

Independent Aileron and Flap

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