The ETHOS operating system developed for the X20 is designed for touch or navigation controls use or a mix of
both.
Introduction
Layout
Switch
SA: 3 positions; Short Lever
SB: 3 positions; Long Lever
SC: 3 positions; Long Lever
SD: 3 positions; Short Lever
SE: 3 positions; Short Lever
SF: 2 positions; Long Lever
SG: 3 positions; Short Lever
SH: 2 positions; Momentary, Long lever
You can choose the Switch and define its
position in the HARDWARE menu.
1. Micro SD card is not provided with shipment.
2. USB port is for upgrading, reading/writing
Micro SD cards and internal memory of radio
contents and charging.
3. Smart Port is for firmware upgrade for all
FrSky S.Port devices.
Navigation Controls
The left navigation control does RTN, SYS, MDL, TELE and Page UP/Down. The right navigation control does scroll
and enter. The navigation controls or touch screen can be used.
Color Themes
Currently there are two color themes.
Blue case with natural color CNC aluminum gimbal rings.
Black case with the CNC black aluminum gimbal rings black.
Battery
The system has a built-in 2S Li balance charger with a USB-C connection for a user provided external USB power
source. The batteries are accessible through a battery hatch in the lower back area of the system.
The battery compartment is 84.5mm by 41.5 high and 20mm deep.
ISRM/R9M RF
The system has a newly designed ISRM/R9M RF board that has a 2.4gig section and a 900mHz section. Two
internal 2.4gig antennas are located in case area at the very top and side and one external antenna mount behind
the display base. The 900mHz has one internal antenna in the handle and one external antenna mount behind the
display base.
Up to 24 channels for 2.4gig ACCESS, 16 channels for D16 and 16 channels for 900mHz ACCESS.
There is a connection for a FrSky external Lite version RF module.
Connections and switches
There is an area behind the base of the display for the external 2.4GHz antenna, trainer jack, S.Port, SD card,
USB-C connection (PC and Li battery balance charging), headphone jack and external 900mHz antenna.
There are six three position switches, one two position and one spring loaded two position.
Two front pots, one front slider and two side sliders.
There are six mode buttons on the front of the system and two push buttons on the back near the grips.
About USB 2S Li-battery balance charging :
The Green Power indicator LED state:
Led on: charging/Led off: charge end/Led flash: charge fault
Please use the following type of battery if you do not want to use the battery slot
LiFePO battery is not supported.
Battery compartment size: 84*41.5*20mm (L*W*H)
Note: 1. Charge the battery with the USB adapter (Voltage: 5V+0.2V Current:＞2.0A) when you use the
USB charging function.
2. The lower the initial charging voltage, the better the charging effect is when the voltage
difference between the two cells exceed 50 mV.
FrSky Electronic Co., Ltd. www.frsky-rc.com Contact us: frsky@frsky-rc.com
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support: sales4tech@gmail.com
Version
1.0
FrSky TANDEM X20/X20 HD/X20 Pro Manual
FrSky Electronic Co., Ltd. www.frsky-rc.com Contact us: frsky@frsky-rc.com
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support: sales4tech@gmail.com
Version
1.0
FrSky TANDEM X20/X20 HD/X20 Pro Manual
FrSky Electronic Co., Ltd. www.frsky-rc.com Contact us: frsky@frsky-rc.com
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support: sales4tech@gmail.com
Version
1.0
FrSky TANDEM X20/X20 HD/X20 Pro Manual
FrSky Electronic Co., Ltd. www.frsky-rc.com Contact us: frsky@frsky-rc.com
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support: sales4tech@gmail.com
Version
1.0
FrSky TANDEM X20/X20 HD/X20 Pro Manual
Specifications
Power Switch
Stick
Slider
SD
SC
SG
SH
Stick
SYS, MOL,
TELE, RTN
Slider
Speaker
SA
SB
SE
SF
Hook
Carrying Bar/Antenna 900 MHz
Module Bay
Battery Cover
Display Screen
● Dimension: 212*200*95 mm (L*W*H)
● Weight: 809g (without battery)
● Operating system: ETHOS
● Internal RF module: TANDEM
● Operating Voltage Range: 6.5 ~ 8.4V (2S Li-battery)
● Operating Temperature: -10℃~60℃ (14℉~140℉)
● Operating Current: 240mA@7.4V (typ.)
● Charging Current: ≤1A ±200mA
● USB Adaptor Voltage: 5V+0.2V
● USB Adaptor Current: >2.0A
● Backlit touchable LCD resolution: 800*480
● Compatibility: ACCST D16 & ACCESS receivers
ETHOS
Model Setup Procedure-Internal Module
The internal RF module of FrSky TANDEM X20 is newly developed by FrSky under the name of TANDEM-X20.
Step 1:
Enter the RF SYSTEM menu
Choose the INT MODULE. Then turn ON INTERNAL RF, select the OUTSIDE or INSIDE ANTENNA ( Dual internal
antennas and external antenna work simultaneously while selecting the OUTSIDE ANTENNA.)
Set the Mode for TANDEM X20 internal RF corresponding to your receiver (ACCESS, ACCST D16).
Step 2:
Set the Channel Range
The internal RF module of TANDEM X20 supports 24 channels. the channel range is configurable, and it needs to
be double checked before use.
Step 3:
Set the Receiver Number
When you create a new model, the system will assign you a receiver number automatically, but this can be easily
changed. The range of the Model ID is 00-63, with the default number being 01. Once the receiver is set to the
desired number and is bound to the TANDEM X20, the bind procedure will not need to be repeated unless the
receiver number is changed, In this case, set the receiver number to the previous one, repeat the bind procedure.
Step 4 :
Registration
In ACCESS, select the STATE [Register] into Registration status. Then Press the F/S button and power on your
receiver, and select the “RX Name XX” and [REGISTER] to complete the Registration process then power down the
receiver.
TANDEM X20 - A groundbreaking dual-band radio transmitter.
Comes with a color-display touch screen, using the light-weight and robust case but quality material.
And the rear 2 momentary buttons provide DLG pilots a fit position for the launch finger no matter you are left or
right-handed.
Internal 900MHz/2.4GHz Dual-Band & External Module Bay
The TD dual-band RF system does not simply reiterate the features of combining FrSky 900MHz and 2.4GHz RF
systems. The TD features its real simultaneous dual-band long-range control with telemetry that can achieve
incredible and incomparable end-to-end 3ms latency while connecting the TD receivers.
ETHOS - A Powerful, Intuitive and Flexible OS!
The ETHOS, as a thorough upgrade base on the former system FrOS.
Features
●
Built-in TD 900M/2.4G Dual-Band Internal RF Module
Supports Multiple Working Modes
- 2.4G ACCST D16 Mode (Compatible with ACCST Receivers with D16 V2 or later FW)
- 2.4G ACCESS Mode (Compatible with ACCESS Receivers)
- 900M ACCESS Mode (Compatible with ACCESS R9 915MHz Receivers)
- *Capable of simultaneous working under ACCESS mode
- 2.4G&900M TD Mode (Compatible with TD Receivers)
- Super-low latency and long-range control with telemetry
- *Up to 50 to 100KM range and down to 3ms end-to-end latency
●
800*480 Color Touch-Screen Displays
●
6 Quick-Mode Custom Buttons (Front) and 2 Momentary Buttons (Rear)
●
Lite Type External Module Bay
●
Built-in 6-axis Gryoscope Sensor
● All
CNC Metal Trims, Knobs
●
Haptic Vibration Alerts and Voice Speech Outputs
●
Supports Recharge System for 2S Li-ion Battery (USB Type-C Interface)
●
High-speed PARA Wireless Training System (Compatible with FreeLink App3.0)
●
High-Precision Hall-Sensor Gimbals with All-CNC Metal Panel
●
ETHOS: The more powerful, Flexible and Intuitive OS for your radio.
- Clear and Intuitive UI Design
- Supports Dual Operation Modes of Radio Display (Touch and Non-Touch)
- Supports Multi-Language Switching
- Hardware/Software Version and Factory Version Detection
- Supports running LUA Scripts
Stand.
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