Compatible with Fixed-wings/Gliders/Multirotors/Cars/Boats
Instruction Manual
CE FCC RoHS
* Please be kindly noted that this manual will be updated regularly and please visit RadioLink
official website to download the latest version.
Radiolink Electronic Ltd
www.radiolink.com
Thank you for purchasing RadioLink 8-channel remote controller T8S.
To fully enjoy the benefits of this product and ensure safety, please read the manual carefully and set up
the device as instructed steps.
If any problems found during the operation process, either way listed below can be used as online tech
support.
1. Send mails to after_service@radiolink.com.cn or after_service1@radiolink.com.cn and we will answer your
question at the earliest.
2. PM us on our Facebook page or leave comments on our Youtube page
3. If the product is purchased from the local distributor, you can also ask them for support and repair as prefer.
All manuals and firmwares are available on RadioLink official website www.radiolink.com and more tutorials are
uploaded. Or follow our Facebook and Youtube homepage to stay tuned with our latest news.
SAFETY PRECAUTIONS
Never operate models during adverse weather conditions. Poor visibility can cause disorientation and loss
of control of pilots’model.
Never use this product in a crowd or illegal areas.
Always check all servos and their connections prior to each run.
Always be sure about turning off the receiver before the transmitter.
To ensure the best radio communication, please enjoy the flight/driving at the space without interference
such as high voltage cable, communication base station or launching tower.
WARNING
This product is not a toy and is NOT suitable for children under the age of 18. Adults should keep the product
out of the reach of children and exercise caution when operating this product in the presence of children.
Water or moisture may enter the transmitter inside through gaps in the antenna or joystick and cause model
instability, even out of control. If running in the wet weather(such as game) is inevitable, always use plastic
bags or waterproof cloth to cover the transmitter.
FCC Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates uses and can radiate radio frequency
Radiolink Electronic Ltd
No.
Items
Qty
Unit1TX T8S
1
Piece
2
RX R8EF
1
Piece
3
OTG Cable
1
Piece
4
Throttle-Stick
Spring
Retainer
1
Piece
www.radiolink.com
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment.
Packing List
Content
Radiolink Electronic Ltd
www.radiolink.com
Chapter 1 Introduction
1.1 Installation of Remote Control.....................................................................................................................................1
3.3.4 SYSTEM Menu................................................................................................................................................ 11
Chapter 4 T8S Parameters Setup via Computer
4.1 Software Installation and Connection...................................................................................................................... 12
Independently adjustable elevator travel allows for differences in up vs. down travel.
•
The separate ELEVON settings for each condition can be set. (GLIDER only)
10
Radiolink Electronic Ltd
www.radiolink.com
V-TAIL: This function is used on the V-tail aircraft.
V-TAIL mixing is used with v-tail aircraft so that both elevator and rudder functions are combined for the two
tail surfaces. Both elevator and rudder travel can be adjusted independently on each surface.
ADJUSTABILITY:
• CH2 and CH4 are required.
• Independently adjustable travel allows for differences in servo travels.
• Rudder differential is not available. To create rudder differential, set RUD1 and 2 to 0, then use two
programmable mixes, RUD-ELE and RUD-RUD, setting different percentages for up and down. These are
new rudder travels. Turn the trim and link off, switch assignment null so rudder won’t be accidentally turned
off.
Note
V-TAIL function and ELEVON/AILEVATOR mix functions can’t be activated at the same time. If both of these
functions are activated, an error message will be displayed and you must inactivate the last function prior to
activating ELEVON.
Make sure to move the elevator and rudder sticks regularly while checking the servo motions. If a large travel
value is set, when the sticks are moved at the same time, the controls may mutually disturb or run out of travel.
Decrease the travel until no disturbance occurs.
3.3.4 SYSTEM Menu
There are three parameters to set:“AUX-CH” “PROG.MIX1” “PROG.MIX2”
AUX-CH
CH5/6/7/8 Auxilary channels Ch5 to Ch8 can be personalized to different switches
TX Alarm
When the transmitter voltage is lower than the value set, T8S will make D sound to warn.
STK-MODE by default
1 is throttle at right while 2 is throttle at left. 3 is throttle at right for toys while 4 is throttle at left for toys.
VERSION: The numbers mean different firmware versions which can be updated.
PROG. MIX1/PROG. MIX2
Programmable mix controls is to
1. Diversify attitude changes of aircraft (eg. Rolling to realize when rudder are commanded);
11
Radiolink Electronic Ltd
www.radiolink.com
2. Control a certain axis with two or more servos(eg. 2 rudder servos);
3. Correct special movement automatically (eg. Lower FLAP and ELEVATOR servos at the same time);
4. Control the second channel to respond to the movement of the first channel(eg. Increase smoke oil to
respond to high speed, but only when the smoke switch is activated).;
5. Turn off the main control under certain circumstances (eg. For dual-engine aircraft, turn off a motor or speed
up/down one motor to assist rudder to turn)
PROG. MIX1: the mix control of AILERON and ELEVATOR servos is to assist turning.
PROG. MIX2: the mix control of ELEVATOR and FLAP servos is to loop in small diameter.
Adjustability: Channel 1 to 8 can be personalized to mix.
MAS: Master channel. Other channels need to cooperate with movements of the master channels.
SLA: Slave channel. Many mix controls are controlled by one master channel. Eg. Rudder-Aileron mix control
with ration of 25% to correct rolling. No switch is needed.
Chapter 4 T8S Parameters Setup via Computer
4.1 Software Installation and Connect
Connect the computer and the T8S with an android USB cable (No OTG cable needed)
Open the parameter setup software in the downloaded file,then power on T8S
Choose Port Number( COM port will be automatic identified when connected), setting baud rate: 115200,
8-1-None(8 data bits, 1 stop bit, no parity check), click OPEN to connect.
Note When click OPEN to connect, the SETTING parts mentioned above will turn grey and can’t be changed
and PARAMETERS at bottom right will be displayed
12
Radiolink Electronic Ltd
www.radiolink.com
4.2 Parameters Setup Menu
READ: T8S data will be read and displayed on computer when click “READ”and two D sounds will be heard.
LOAD: The data file in TXT format saved will be loaded in the software.
UPDATE: Modify the data as wish then click“UPDATE”to change the parameter in T8S. (two green LEDs on
the right will flash once with one D sound).
SAVE The data read or set will be saved as TXT file in the computer. This is very helpful if there are several
sets of radio data need to be saved or if one set of parameters need to be copied in different radios.
Parameters Setting Steps
When parameters need to be modified, click READ first to input the original data into the software, then
modify as wish and click UPDATE to output the modified data to T8S.
When parameters SAVE as TXT file need to be input, click LOAD first to input the saved data into the
software then click UPDATE to copy them to T8S.
4.2.1 BASIC Menu
There are 6 parameters to setup: “REVERSE””SUB-TRIM””END POINT””FAIL SAFE””AUX-CH””DELAY”
13
Radiolink Electronic Ltd
www.radiolink.com
REVERSE: Defines the relationship between the transmitter controls and the receiver output for channels
with option of NORM and REV. Refer to 3.3.2-REV (P9) for more details .
SUB-TRIM: Makes small changes or corrections to the neutral position of each servo. Refer to 3.3.2-SUB
(P9) for more details .
END POINT: Sets the range of each channel(in percentage);
The most flexible version of travel adjustment is available. It independently adjusts each end of each
individual servo’s travel, rather than one setting for the servo affecting both directions. Refer to 3.3.2-EPA-L
&EPA-R (P9) for more details .
FAIL SAFE: Sets responsive action of model in case of signal loss or low Rx voltage(in percentage).
Refer to 3.3.2-F/S (P9) for more details .
AUX-CH: Defines the relationship between the transmitter controls and the receiver output for channels 5-8.
Refer to 3.3.4 for more details .
DELAY: Adjust the ratio between the position of servos and the actual operation. Refer to 3.3.2-DELAY (P10)
for more details .
4.2.2 ADVANCED Menu
There are six parameters setup ”D/R” “ATTITUDE” “ELEVON” “V-TAIL”PROG.MIX1/PROG.MIX2 as below
shown, please refer to 3.3.3 (P10-11) and 3.3.4(P11) for more details..
14
Radiolink Electronic Ltd
www.radiolink.com
Chapter 5FAQ
What is the connection order of APP--USB--T8S ?
A: The best order is: Turn on T8S -- connect USB cable-- connect APP. When connected with success, a notice
will pop out to open APP.
Why the voltage displayed always moves up or down when connecting T8S to APP, sometime is 0,
sometime is 7.98v ?
A: Close the APP, then reconnect again.
Why does the APP show the flashback reminder?
A: Please contact our after-sales service, we will send you an upgrade software to solve this problem.
What are the correct steps for the “READ”?
A: In general, please click the “READ” first after connecting T8S to APP to make sure the data of APP is the
default or the one you setup last time.
How to restore factory settings?
A: The data shown on the APP when opened (don’t click READ ) is factory setting data. Or click UPDATE to so
restore the factory setting.
What if the APP always fails to connect to T8S?
A: It could possibly because of the android USB cable. If not, please contact our after-sales service.
15
Radiolink Electronic Ltd
Find
the
folder
Storage
and
model
www.radiolink.com
Do the TXT file of “Smart-phone APP” and “the computer parameter setting software”work for the same
effect ?
A: Both of the two files are the same, but the name of computer software needs to be changed as“model01.txt”,
then create a file box (model) at root directory in Phone, put the “model01.txt” in “model” .
Where to find “SAVE” file (/model/model01.text) in phone?
What if the APP flashback when you click “LOAD” button?