FrSky TANDEM X20 User manual

X20 and Ethos
User Manual

Table of Contents
Main Views.................................................................................................................................. 1
The Top Bar............................................................................................................................. 1
The Bottom Bar.......................................................................................................................1
The Widgets Area....................................................................................................................1
User Interface and Navigation.....................................................................................................2
Editing ontrols.......................................................................................................................2
Virtual Keyboard.................................................................................................................2
Number Value ontrols.......................................................................................................2
Options feature...................................................................................................................3
Emergency Mode......................................................................................................................... 6
System Setup.............................................................................................................................. 7
Overview................................................................................................................................. 7
File Manager.......................................................................................................................7
Alerts..................................................................................................................................7
Date & Time........................................................................................................................7
Display................................................................................................................................ 7
Sound & Vibr......................................................................................................................7
Battery................................................................................................................................ 7
Hardware............................................................................................................................7
Sticks.................................................................................................................................. 7
Wireless.............................................................................................................................. 7
Info..................................................................................................................................... 7
File Manager........................................................................................................................... 8
Alerts..................................................................................................................................... 11
Silent Mode heck............................................................................................................11
Main Battery heck...........................................................................................................11
RT Battery heck...........................................................................................................11
Inactivity............................................................................................................................ 11
Date and Time.......................................................................................................................12
24 Hour time.....................................................................................................................12
Display seconds...............................................................................................................12
Date.................................................................................................................................. 12
Time..................................................................................................................................12
Time Zone........................................................................................................................ 12
Auto Adjust from GPS.......................................................................................................12
Display.................................................................................................................................. 13
Brightness......................................................................................................................... 13
Wake up...........................................................................................................................14
Sleep................................................................................................................................ 14
Shutdown L D during sleeping........................................................................................14
Style................................................................................................................................. 15
Language.......................................................................................................................... 15
Top Toolbar.......................................................................................................................15
Sound & Vibr......................................................................................................................... 16
Language.......................................................................................................................... 16
Main Volume.....................................................................................................................16
Audio Mode......................................................................................................................16
Vibr Strength.....................................................................................................................17
Vibr. Mode........................................................................................................................17
Vario................................................................................................................................. 18
Battery................................................................................................................................... 19
Main Voltage.....................................................................................................................19
Low Voltage...................................................................................................................... 19
Display voltage range.......................................................................................................19

RT voltage...................................................................................................................... 19
Hardware.............................................................................................................................. 20
Hardware check................................................................................................................20
Analogs calibration...........................................................................................................21
Gyro calibration................................................................................................................21
Analogs Filter.................................................................................................................... 21
Pots/Sliders Settings.........................................................................................................22
Switches Settings.............................................................................................................22
Home Keymap..................................................................................................................23
Function Switches............................................................................................................. 24
AD value inspector......................................................................................................... 25
Sticks.................................................................................................................................... 26
hannel Order..................................................................................................................26
First four channels fixed....................................................................................................27
Wireless................................................................................................................................ 28
Bluetooth Mode................................................................................................................28
Info........................................................................................................................................ 33
Firmware........................................................................................................................... 33
Firmware Version..............................................................................................................33
Date.................................................................................................................................. 33
Sticks................................................................................................................................ 33
Internal Module................................................................................................................. 33
Receiver........................................................................................................................... 34
External Module................................................................................................................34
Model Setup...............................................................................................................................35
Overview............................................................................................................................... 35
Model Select..................................................................................................................... 35
Edit Model......................................................................................................................... 35
Flight Modes.....................................................................................................................35
Mixer................................................................................................................................. 35
Outputs.............................................................................................................................35
Timers............................................................................................................................... 35
Trims.................................................................................................................................35
RF System........................................................................................................................ 36
Telemetry..........................................................................................................................36
hecklist........................................................................................................................... 36
Logic Switches..................................................................................................................36
Special Functions.............................................................................................................36
urves.............................................................................................................................. 36
Trainer..............................................................................................................................36
Device onfig...................................................................................................................37
Model Select......................................................................................................................... 38
Adding a New Model.........................................................................................................38
Selecting a Model.............................................................................................................39
Edit model............................................................................................................................. 40
Flight Modes.......................................................................................................................... 41
Flight Mode Management.................................................................................................42
Mixer..................................................................................................................................... 44
Aileron, Elevator, Rudder Mixer........................................................................................45
Throttle Mixer.................................................................................................................... 48
Predefined Mixes..............................................................................................................50
Outputs................................................................................................................................. 54
Outputs Setup...................................................................................................................55
Timers................................................................................................................................... 56
Name................................................................................................................................57
Mode................................................................................................................................ 57
Alarm/Start Value..............................................................................................................57

ountdown Mode..............................................................................................................57
Haptic............................................................................................................................... 57
ountdown Start...............................................................................................................57
ountdown Step...............................................................................................................57
Active ondition................................................................................................................ 58
Reset................................................................................................................................ 59
Persistent..........................................................................................................................59
Trims..................................................................................................................................... 60
Trim Mode........................................................................................................................ 60
Extended Trims.................................................................................................................61
Independent Trim per Flight Mode....................................................................................61
ross Trim........................................................................................................................ 61
RF System............................................................................................................................ 62
Owner Registration ID......................................................................................................62
Internal Module................................................................................................................. 62
External Module................................................................................................................79
Telemetry..............................................................................................................................82
Smart Port telemetry.........................................................................................................82
A ESS Telemetry..........................................................................................................83
Telemetry Settings............................................................................................................86
hecklist............................................................................................................................... 95
Throttle heck..................................................................................................................95
Failsafe heck.................................................................................................................. 95
Pots heck....................................................................................................................... 95
Switch heck.................................................................................................................... 96
Logic Switches......................................................................................................................97
Adding Logic Switches......................................................................................................98
Logic Switches – Shared Parameters.............................................................................104
Logic Switches – Use with Telemetry..............................................................................105
Special Functions................................................................................................................106
Special Functions...........................................................................................................107
urves................................................................................................................................. 112
Expo................................................................................................................................113
Function.......................................................................................................................... 113
ustom........................................................................................................................... 116
Trainer................................................................................................................................. 118
Trainer Mode = Master....................................................................................................118
Trainer Mode = Slave.....................................................................................................121
Device onfig...................................................................................................................... 122
Programming Tutorials.............................................................................................................123
Initial radio setup example...................................................................................................123
Step 1. harge the radio and flight batteries...................................................................123
Step 2. alibrate the hardware.......................................................................................123
Step 3. Perform the Radio System setup........................................................................123
Basic Fixed Wing Airplane example....................................................................................125
Step 1. onfirm System settings.....................................................................................125
Step 2. Identify the servos/channels required.................................................................125
Step 3. reate a new model...........................................................................................125
Step 4. Review and configure the mixes.........................................................................128
Step 5. onfigure the Outputs........................................................................................133
Step 6. Introduction to Flight Modes...............................................................................136
Step 7. Add a VFR alert..................................................................................................137
Step 8. Set up a LiPo battery timer.................................................................................139
Step 9. Add a mix for retracts..........................................................................................140
'How To' section................................................................................................................... 141
1. How to set up a low battery voltage warning...............................................................141
2. How to set up a battery capacity warning using a Neuron ES ..................................144

3. How to set up a battery capacity warning using a calculated sensor..........................146
4. How to create a model for SR8/SR10.........................................................................149
5. How to reorder channels e.g. for SR8/SR10...............................................................150
6.How to configure a Butterfly mix..................................................................................153

X20/X20S and Ethos v1.0.11 User Manual
Main Views
Ethos allows the user considerable flexibility in what is displayed in the Main iews. Initially
only the basic information shown below is displayed, until the user customizes or adds views
and widgets to be displayed. Note that up to eight Main iews may be defined.
All Main iews share the top and bottom bars. Please refer to the Configure Screens section for
details on configuring the views.
The Top Bar
The top bar displays the model name on the left, and RSSI, sound volume and radio battery
status on the right. Touching the time, speaker and battery icons will bring up the relevant
Date & Time, Sound & ibr. and Battery control panels.
The Bottom Bar
The bottom bar has four tabs for accessing the top level functions, i.e from left to right: Home,
Model Setup, Configure Screens, and System Setup. The system time is displayed on the right.
The Widgets Area
The middle area of the Main iews consists of widgets which may be configured to display
images, timers, telemetry data, radio values etc. The default main screen has a widget on the
left for a model image and three widgets for timers, as well as displaying the trims and pots.
The widgets are user configurable to display other information. Once multiple screens have
been configured, they can be accessed using a touch swipe gesture or navigation controls.
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X20/X20S and Ethos v1.0.11 User Manual
User Interface and Navigation
The X20/X20S has a touch screen, making the user interface quite intuitive. Touching the
Model Setup (Airplane icon), Configure Screens (Multiple Screens icon), and System Setup
(Gear icon) tabs take you directly to those functions, which are described in those sections of
the manual. They can also be accessed using the [MDL], [DISP] and [SYS] keys respectively.
A long press on the [RTN] key will return you to the Home screen from any sub-menu.
Touching the system time on the right of the bottom bar takes you to the Date & Time section,
allowing you to set the time and date.
Touching the speaker or battery icons in the top bar will bring up the relevant Sound & ibr.
and Battery control panels.
Editing Controls
Virtual Keyboard
Ethos provides a virtual keyboard for editing text fields.
Simply touch on any text field (or click [ENT]) to bring up the keyboard.
Touch the '?123' or 'abc' key to toggle between alpha and numeric keypads. There is also a
Caps lock for entering uppercase letters.
Number Value Controls
When touching a Number alue a dialog pops up with keys for setting the value to Min,
Default or Max, and also 'plus' and 'minus' keys for incrementing or decrementing the value.
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X20/X20S and Ethos v1.0.11 User Manual
In addition, the slider across the bottom allows for the rotary encoder output per click to be
adjusted from 1:1 or fine on the left, and coarse on the right. The slider may also be
adjusted with the rotary encoder while the [Page] key is held down.
Another example is a Telemetry Range value, which can be edited in a similar way.
Options feature
Ethos has a very powerful 'Options' feature. Almost anywhere a value or source is expected,
a long press of the Enter key will bring up an Options dialog.
Fields with this feature can be identified by the square dot in the top left corner of the field.
Value options
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X20/X20S and Ethos v1.0.11 User Manual
The alue Options dialog shows which parameter is being configured. In this example
you have the choice of setting the Weight/Rates to maximum or minimum, or to use a
source. Using a source like a Pot would allow the Weight/Rates to be adjusted in flight.
If you click on a alue field that has already been changed to use a source, a dialog pops
up allowing you to convert the source's current value to a fixed value. Clicking on
'Options' will bring up options for the source, see below.
Source Options
Invert
Invert allows a source such as a switch position to be negated or inverted. For
example instead of being active when switch SA is up, it would be active when switch
SA is NOT up, i.e. in either the mid or down positions.
Edge
You can select the 'Edge' option if you need a one-time action when the source
transitions from False to True. Only the transition is acted upon, not the True or False
state.
Please refer to the X20 and Ethos thread on rcgroups.com for more details and
discussion on the use of this new feature.
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X20/X20S and Ethos v1.0.11 User Manual
Sensor Options
On a Telemetry source the Options dialog allows the sensor to be inverted, or its
maximum or minimum value to be used. Some sensors have additional options specific to
that sensor.
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