Fly Sky FS-i6X User manual

Digital Proportional Radio Control System
WARNING:
This product is only for 15 years
old or above
INSTRUCTION
MANUAL
Digital Proportional Radio Control System
Copyright ©2013-2017
Flysky RC model technology co., ltd
FS-l6
FCC ID:N4ZFLYSKYI6X

1
Thank you for purchasing our product, an ideal radio system for beginners or experienced users alike.
Read this manual carefully before operation in order to ensure your safety, and the safety of others or the
safe operation of your system.
If you encounter any problem during use, refer to this manual first. If the problem persists, contact your
local dealer or visit our service and support website for help:
http://www.flysky-cn.com

2
Digital Proportional Radio Control System FS-l6
Table of Contents
1. Safety .........................................................................................................................................................4
1.1 Safety Symbols .................................................................................................................................................................4
1.2 Safety Guide.......................................................................................................................................................................4
2. Introduction ..............................................................................................................................................6
2.1 System Features................................................................................................................................................................6
2.2 Transmitter Overview .....................................................................................................................................................7
2.2.1 Transmitter Antenna .................................................................................................................................................8
2.2.2 Battery Indicator.........................................................................................................................................................8
2.2.3 Trims................................................................................................................................................................................8
2.3 Receiver Overview ..........................................................................................................................................................8
2.3.1 Receiver Antenna........................................................................................................................................................8
2.3.2 Connectors ..................................................................................................................................................................9
3. Getting Started .......................................................................................................................................10
3.1 Transmitter Battery Installation................................................................................................................................10
3.2 Connecting the Receiver and Servos ....................................................................................................................10
4. Operation Instructions ..........................................................................................................................11
4.1 Power On..........................................................................................................................................................................11
4.2 Binding..............................................................................................................................................................................11
4.3 Pre-use Check.................................................................................................................................................................12
4.4 Changing Stick Modes ................................................................................................................................................12
4.5 Power Off ......................................................................................................................................................................... 13
5. Function Descriptions.............................................................................................................................14
5.1 Flight Controls(Default Mode 2).............................................................................................................................. 14
5.2 Reverse Function ...........................................................................................................................................................15
5.3 End points........................................................................................................................................................................15
5.4 Display...............................................................................................................................................................................16
5.5 Aux Channels ..................................................................................................................................................................16
5.6 Subtrim .............................................................................................................................................................................16
5.7 Dual rate/exp.................................................................................................................................................................. 16
5.8 Throttle Curve ................................................................................................................................................................17
5.9 Mixes .................................................................................................................................................................................17
5.10 Elevon .............................................................................................................................................................................18
5.11 V Tail ................................................................................................................................................................................18
5.12 Assign Switches...........................................................................................................................................................18
5.13 Throttle Hold................................................................................................................................................................19
6. Helicopter Function.................................................................................................................................20
6.1 Pitch Curve ......................................................................................................................................................................20
6.2 Swashplate Mix .............................................................................................................................................................. 20
6.3 Gyroscope........................................................................................................................................................................20
7. System.......................................................................................................................................................20
7.1Model Select ....................................................................................................................................................................21
7.2 Model Name ...................................................................................................................................................................21
7.3 Type Select.......................................................................................................................................................................21
7.4 Model Copy.....................................................................................................................................................................21
7.5 Model Reset ....................................................................................................................................................................21

3
FS-l6
7.6 Trainer Mode .................................................................................................................................................................21
7.7 Student Mode.................................................................................................................................................................22
7.8 Sticks mode.....................................................................................................................................................................22
7.9 LCD Brightness...............................................................................................................................................................22
7.10 Firmware Ver.................................................................................................................................................................22
7.11 Firmware Update ........................................................................................................................................................22
7.12 Factory Reset................................................................................................................................................................22
7.13 Aux Switches.................................................................................................................................................................23
8. RX Setup ...................................................................................................................................................24
8.1 RF Standard.....................................................................................................................................................................24
8.2 PPM Output ....................................................................................................................................................................24
8.3 RX Battery ........................................................................................................................................................................24
8.4 Failsafe ..............................................................................................................................................................................24
8.5 Sensors List......................................................................................................................................................................25
8.6 Choose Sensors .............................................................................................................................................................25
8.7 Speed and Distance...................................................................................................................................................... 25
8.8 ASL Pressure....................................................................................................................................................................26
8.9 i-BUS Setup .....................................................................................................................................................................26
8.10 Servos Freq ................................................................................................................................................................... 26
9. System Customization ............................................................................................................................27
9.1 Switching Channel Assignments..............................................................................................................................27
9.2 Activate Switch/Knob .................................................................................................................................................29
10.Package Contents...................................................................................................................................30
11. Product Specification ...........................................................................................................................31
11.1 Transmitter Specification (FS-i6X)......................................................................................................................... 31
11.2 Receiver Specification (FS-iA6) .............................................................................................................................31
Appendix 1 FCC Statement .......................................................................................................................32

4
Digital Proportional Radio Control System FS-l6
1. Safety
1.1 Safety Symbols
Pay close attention to the following symbols and their meanings. Failure to follow these warnings could
cause damage, injury or death.
Danger • Not following these instructions may lead to serious injuries or death.
Warning • Not following these instructions may lead to major injuries.
Attention • Not following these instructions may lead to minor injuries.
1.2 Safety Guide
Prohibited Mandatory
• Do not use the product at night or in bad weather like rain or thunderstorm. It
can cause erratic operation or loss of control.
• Do not use the product when visibility is limited.
• Do not use the product on rain or snow days. Any exposure to moisture (water
or snow) may cause erratic operation or loss of control.
• Interference may cause loss of control. To ensure the safety of you and others,
do not operate in the following places:
• Near any site where other radio control activity may occur
• Near power lines or communication broadcasting antennas
• Near people or roads
• On any pond when passenger boats are present
• Do not use this product when you are tired, uncomfortable, or under the
influence of alcohol or drugs. Doing so may cause serious injury to yourself or
others.
• The 2.4GHz radio band is limited to line of sight. Always keep your model in
sight as a large object can block the RF signal and lead to loss of control.
• Never grip the transmitter antenna during operation. It significantly degrades
signal quality and strength and may cause loss of control.
• Do not touch any part of the model that may generate heat during operation, or
immediately after use. The engine, motor or speed control, may be very hot and
can cause serious burns.

5
FS-l6
• Misuse of this product may lead to serious injury or death. To ensure the safety
of you and your equipment, read this manual and follow the instructions.
• Make sure the product is properly installed in your model. Failure to do so may
result in serious injury.
• Make sure to disconnect the receiver battery before turning off the transmitter.
Failure to do so may lead to unintended operation and cause an accident.
• Ensure that all motors operate in the correct direction. If not, adjust the
direction first.
• Make sure the model flies within a certain distance. Otherwise, it could cause
loss of control.

6
Digital Proportional Radio Control System FS-l6
2. Introduction
The FS-i6X transmitter and FS-iA6 receiver constitute a 6-channel 2.4GHz AFHDS 2A digital proportional
computerized R/C system. It is compatible with fixed-wing and helicopters.
2.1 System Features
The AFHDS 2A (Automatic Frequency Hopping Digital System Second Generation) developed and
patented by FLYSKY is specially developed for all radio control models. Offering superior protection
against interference while maintaining lower power consumption and high reliable receiver sensitivity,
FLYSKY's AFHDS technology is considered to be one of the leaders in the RC market today.
Bidirectional Communication
Capable of sending and receiving data, each transmitter is capable of receiving data
from temperature, altitude and many other types of sensors, servo calibration and i-BUS
Support.
Multi-channel Hopping Frequency
This systems bandwidth ranges from 2.408GHz to 2.475GHz. This band is divided in
135 channels. Each transmitter hops between 16 channels (32 for Japanese and Korean
versions) in order to reduce interference from other transmitters.
Omni-directional Gain Antenna
The high efficiency Omni-directional high gain antenna cuts down on interference, while
using less power and maintaining a strong reliable connection.
Unique ID Recognition System
Each transmitter and receiver has it's own unique ID. Once the transmitter and receiver
have been paired, they will only communicate with each other, preventing other systems
accidentally connecting to or interfering with the systems operation.
Low Power Consumption
The system is built using highly sensitive low power consumption components,
maintaining high receiver sensitivity, while consuming as little as one tenth the power of a
standard FM system, dramatically extending battery life.

7
FS-l6
2.2 Transmitter Overview
Trainer Jack/Update
Routine Interface
Battery Compartment
Right Gimbal
Handle
Knob 2
OK
CANCEL
UP
DOWN
Trim 2
Trim 1
BIND KEY
Left Gimbal
Trim 3
Trim 4
POWER
Lanyard Hook
Knob 1
SWB
SWA
SWC
SWD
Lanyard Hook
Antenna

8
Digital Proportional Radio Control System FS-l6
2.2.1 Transmitter Antenna
Warning • For best signal quality, make sure that the antenna is at about a 90 degree angle
to the model. Do not point the antenna directly at the receiver.
Danger • Never grip the transmitter antenna during operation. It significantly degrades
the RF signal quality and strength and may cause loss of control.
2.2.2 Battery Indicator
The status indicator is used to indicate the power and status of the transmitter and receiver. If a receiver is
not connected or bound to the transmitter no battery status will be displayed for the receiver.
2.2.3 Trims
There are 4 trims affecting stick functionality, one for ailerons (Channel 1), elevator (Channel 2), throttle
(Channel 3) and rudder(Channel4). Each time a trim is toggled, the trim will move one step. It is possible to
make quicker trim adjustments by holding the trim in the desired direction. When the trim position reaches
the middle, the transmitter beeps in a higher tone.
2.3 Receiver Overview
2.3.1 Receiver Antenna
Attention • For best signal quality, ensure that the receiver is mounted away from motors
or metal parts.
Antenna
B/VCC
To Servos

9
FS-l6
2.3.2 Connectors
The connectors are used to connect the parts of model and the receiver.
• CH1 to CH6: used to connect the servos, power or other parts.
• B/VCC: used to connect the bind cable for binding, and the power cable during normal operation.

10
Digital Proportional Radio Control System FS-l6
3. Getting Started
Before operation, install the battery and connect the system as instructed below.
3.1 Transmitter Battery Installation
Danger • Only use specified battery.
Danger • Do not open, disassemble, or attempt to repair the battery.
Danger • Do not crush/puncture the battery, or short the external contacts.
Danger • Do not expose to excessive heat or liquids.
Danger • Do not drop the battery or expose to strong shocks or vibrations.
Danger • Always store the battery in a cool, dry place.
Danger • Do not use the battery if damaged.
Follow the steps to install the transmitter battery:
1. Open the battery compartment.
2. Insert 4 fully-charged AA batteries into the compartment. Make sure that the batteries makes good
contact with the battery compartments' contacts, with the correct polarity.
3. Replace the battery compartment cover.
3.2 Connecting the Receiver and Servos
Connect the receiver and the servos as indicated below:

11
FS-l6
4. Operation Instructions
After setting up, follow the instructions below to operate the system.
4.1 Power On
Follow the steps below to turn on the system:
1. Check the system and make sure that:
• The batteries are fully charged and installed properly.
• The receiver is off and correctly installed.
2. Toggle the power switch to its upward position.
3. Connect the receiver power supply to the B/VCC port on the receiver.
The system is now powered on. Operate with caution,or serious injury could result.
4.2 Binding
The transmitter and receiver have been pre-bound before delivery. If you are using another transmitter or
receiver, follow the steps below to bind the transmitter and receiver:
1. Connect the supplied bind cable to the B/VCC port on the receiver.
2. Insert power into any other port.
3. Hold the bind key while powering on the transmitter to enter bind mode.
4. Remove the power and bind cable from the receiver. Then connect the power cable to the B/VCC
port.
5. Check the servos' operation. If anything does not work as expected, restart this procedure from the
beginning.

12
Digital Proportional Radio Control System FS-l6
4.3 Pre-use Check
Before operation, perform the following steps to check the system:
1. Check to make sure that all servos and motors are working as expected.
2. Check operating distance: one operator holds the transmitter, and another one moves the model
away from the transmitter. Check the model and mark the distance from where the model starts to
lose control.
Danger • Stop operation if any abnormal activity is observed.
Danger • Make sure the model does not go out of range.
Attention • Sources of interference may affect signal quality.
4.4 Changing Stick Modes
Usually the stick with the self centering feature on both axes will be mapped to the Elevator, while the
other to the Throttle.
The functions of the sticks in respective modes are shown below:
Elevator
Throttle
Rudder Aileron
Throttle
Elevator
Rudder Aileron
Mode 1 Mode 2
Ele
va
to
r
Thr
ottle
Aileron Rudder
Thr
ottle
Ele
va
to
r
Aileron
Mode 3 Mode 4
Rudder

13
FS-l6
When switching between modes one and two it is nessesary to reverse the gimbals positions to ensure
that throttle is on the correct side. To switch the sticks:
1. Take the battery out from the transmitter, Loosen the four screws that hold the rear cover shown in
green on left .
2. Carefully take the back off the transmitter and disconnect the cables connected to it.
3. Unscrew the screws around the gimbals, marked in green in the picture on right.
4. Switch the gimbals to the opposite side. Make sure the gimbals have been rotated 180 degrees so
that the wires are facing towards the middle of the system.
5. Reconnect the wires connecting the back to the front, then reattach the back and tighten the screws.
6. Turn the transmitter, go to Main Menu, select "System Setup" and navigate to "Sticks mode" then
make sure the correct stick mode is selected. From the main menu enter "System Setup" and select
"Display" and move the joystick to make sure that the channel moves in the correct direction.
4.5 Power Off
Follow the steps below to turn off the system:
1. Disconnect the receiver power.
2. Toggle the transmitter's power switch to its low position.
Danger • Make sure to disconnect the receiver power before turning off the transmitter.
Failure to do so may lead to damage or serious injury.

14
Digital Proportional Radio Control System FS-l6
5. Function Descriptions
5.1 Flight Controls (Default Mode 2)
The sticks are used for controlling the aircraft, each stick has 2 functions. The right stick controls pitch and
roll, the left stick controls throttle and yaw.
Pitch (Right Stick Up/Down)
Roll (Right Stick Left/Right)
Yaw (Left Stick Left/Right)
UP
DOWN
LEFT RIGHT
LEFT RIGHT

15
FS-l6
Throttle (Left Stick Up/Down)
5.2 Reverse Function
The reverse function changes a channels direction of movement
in relation to its input. For example, if a servo has to be
mounted upside down due to space restrictions within a model,
this function can be used to correct its movement so that it
matches up with the user controls.
Setup:
1. To change between normal and press the "OK" key until the
desired channel is selected, then use the "UP" and "DOWN"
keys to change setting.
Nor = Normal, Rev = Reverse.
2. Hold the "CANCEL" key to save and return to the previous
menu.
3. To return to default settings press and hold the "OK" key for
3 seconds.Press and hold the"CANCEL"key to save.
5.3 End Points
The end points function changes the range of movement available to a channel. This can be used to
prevent damage to a model when a servo moves too far, potentially leading to damage to pushrods etc.
The left box is the low end point, the right box is the high end point, marked below as low being blue and
red being high.
Setup:
1. Press the "OK" to change channels.
2. Move the channel using its stick or knob to select the low
or high side.
3. Use the "UP" and "DOWN" keys to increase or decrease the
value.
4. Hold the "CANCEL" key to save and return to the previous
menu.
5. To return to default settings press and hold the "OK" key
for 3 seconds.Press and hold the"CANCEL"key to save.
THROTTLE UP
THROTTLE DOWN

16
Digital Proportional Radio Control System FS-l6
5.4 Display
This function displays the model's channel output in real time.
Warning
• Make sure the model engine is powered
off while the test function is activated.
If powered on, it will rev up and cause
unexpected results.
Danger • Make sure the model does not go out
of range.
Setup:
1. Hold the "OK" key to enable channel scrub mode. In this
mode the channels will sweep though their entire range of
motion.
2. Press "CANCEL" key to exit.
5.5 Aux Channels
The auxiliary channels function can be used to assign switches to extra channels to control additional part
of a model such as landing gear or lights.
Setup:
1. Press the "OK" to change channels.
2. Use the "UP" and "DOWN" keys to select a source (Switch
,Knob or None).
3. Hold the "CANCEL" key to save and return to the previous
menu.
5.6 Subtrim
Subtrim changes the center point of the channel. For example, if a models rudder is slightly out of
alignment, the subtrim could be used to fix this.
Setup:
1. Press the "OK" to change channels.
2. Use the "UP" and "DOWN" keys to change the subtrim
position.
3. Hold the "CANCEL" key to save and return to the previous
menu.
4. To return to default settings press and hold the "OK" key
for 3 seconds. until the channel returns to the center.Press
and hold the "CANCEL" key to save.
5.7 Dual rate/exp.
Thedualrate/exp.functiononlyappliestochannels1、2、4.
[Dual Rate]: Dual Rate reduces or increases the difference between the highest and lowest possible value,
for example if applied to the rudder, (set to a throw of 10cm) before changing the settings, when you
move your stick to 1/2 you would get 5cm rudder movement, if you move the stick 1/4 of the way, the

17
FS-l6
rudder will move 2.5cm, so at 100% there is a direct, linear relationship of stick movement and surface
movement.
If a setting of 50% is entered then moving the stick all the way in one direction will only give 1/2 of the
surface movement and 1/2 stick movement will only produce 1/4 surface movement, this has the effect
of reducing how responsive the rudder is when the stick is moved, effectively reducing the range of
movement available to the servo. This function is usually assigned to a condition so that it can be turned
on and off during flight.
[Exp. (Exponential)]: Exponential changes the relationship between stick movement and surface movement
by creating a curve, when in use the stick movement and surface movement are no longer linear so the
stick has a different response in different at different positions. For example this is useful when needing
less reaction during a take-off but more reaction when in the air.
Setup:
1. Press the "OK" to change between settings.
2. Use the "UP" and "DOWN" keys to change the channel/
rate/exp depending on the selected setting.
3. Hold the "CANCEL" key to save and return to the previous
menu.
4. To return a setting to default, press and hold the "OK" key
for 3 seconds. Press and hold the "CANCEL" key to save.
5.8 Throttle Curve
This function enables the user to adjust the ratio between stick and servo movement using a linear line
or non-linear curves.
This is useful when wanting to change how the throttle reacts at between different stick positions, for
example having a smaller throttle change when the stick is between 0-30%, then a larger throttle change
between 30% and 100%. If your models throttle is not linear, it is also possible to use this function to
create a more linear movement.
This function uses 5 points to change the throttle curve, L being the low and H being the high.
Setup:
1. Press the "OK" to change between points.
2. Use the "UP" and "DOWN" keys to change point position.
3. Hold the "CANCEL" key to save and return to the previous
menu.
4. To return a setting to default, press and hold the "OK" key
for 3 seconds. Press and hold the "CANCEL" key to save.
5.9 Mixes
This function is used to create a mix between channels. For example if at low throttle some automated
flap movement was desired then it is possible to create a mix to do this. This system can have up to 3
different mixes.
Setup:
1. Use the "UP" and "DOWN" keys to select a mix.
2. Use the "OK" key to change between settings.
3. Select a master channel, this channel will control the slave channel.
4. Select a slave channel to be controlled by the master.

18
Digital Proportional Radio Control System FS-l6
5. Set the positive and negative mix, this setting controls
how much the slave channel will move in relation to the
masters movement, if set to 50% the slave will move half
the amount of the master.
6. Set the offset, the offset changes the center of the slave
channel in relation to the master.
7. Hold the "CANCEL" key to save and return to the previous
menu.
8. To return a setting to default, press and hold the "OK" key
for 3 seconds. Press and hold the "CANCEL" key to save.
5.10 Elevon
The elevon function is used for planes that combine the elevons an ailerons together.
Setup:
1. Use the "UP" and "DOWN" to turn the function on and off.
2. Use the "OK" key to change between settings.
3. Use the "UP" and "DOWN" keys to change the percentage.
4. To return a setting to default, press and hold the "OK" key
for 3 seconds. Press and hold the "CANCEL" key to save.
5.11 V Tail
The V Tail function is used for planes that use a v tail configuration.
Setup:
1. Use the "UP" and "DOWN" to turn the function on and off.
2. Use the "OK" key to change between settings.
3. Use the "UP" and "DOWN" keys to change the percentage.
4. To return a setting to default, press and hold the "OK" key
for 3 seconds. Press and hold the "CANCEL" key to save.
5.12 Assign Switches
This function enables you to assign switches to Fly mode, Idel mode, and Throttle hold.
Setup:
1. Use the "OK" key to change between settings.
2. Use the "UP" and "DOWN" keys to change switch
assignment.
3. Press and hold the "CANCEL" key to save.

19
FS-l6
5.13 Throttle Hold
This function is used with gas powered models in order to stop stalls when not in use.
Setup:
1. Use the "OK" key to change between settings.
2. Use the "UP" and "DOWN" keys to turn the function on or
off and increase and decrease the hold percentage.
3. To return a setting to default, press and hold the "OK" key
for 3 seconds. Press and hold the "CANCEL" key to save.
Note • This function must be assigned to a switch in the Switches assign funciton.