FrSky TANDEM X20 Pro User Manual

Instruction Manual for FrSky TANDEM X20 PRO
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
TD-ISRM PRO RF PERFORMANCE
With solid performance based on the dual-band 900M/2.4G RF signal link with multiple operating combinations
of RF modes, the TANDEM PRO continues to break new ground in RF performance. The X20 PRO added the
dual 2.4G TW RF mode and supports simultaneous activation of both TW and ACCESS R9 modes. In this
configuration, TW receiver and ACCESS R9 receiver can be connected via the SBUS IN/OUT ports to achieve
redundant backup. This RF signal connection method allows for the simultaneous use of three different RF links
in RC applications. This further enhances the RF signal's reliability, particularly in scenarios involving long-dis-
tance RC operations.
COMPREHENSIVE FUNCTIONAL INPUTS & SOLID-QUALITY METAL PARTS
The X20 PRO optimizes and integrates the functional inputs of the TANDEM series models. Building on the
foundation of X20/X20S, it adds 2 extra trims, allowing for more precise tunings during the operations. The levers
on both sides of the transmitter's slider support customizable positioning of the center toward, catering to different
users' habits and preferences. Additionally, on the left and right sides of the handle top of the X20 PRO, one
self-locking switch is set on each side to prevent accidental triggering of the Kill Switch, ensuring the safety of the
surroundings.
The main body of the X20 PRO is constructed with a all CNC-machined metal material, and the central panel
incorporates genuine carbon fiber material. The primary input components, including trim caps, slider levers, and
knobs, are all made from metal, offering rugged quality and enhanced durability for outdoor use.
BUILT-IN MASS STORAGE & TEXT TO SPEECH FUNCTION
In order to save the user the trouble of deciding the storage capacity, X20 PRO comes with a built-in 8GB flash
storage that offers plenty of file storage to meet all of your radio's storage needs, along with high data transmis-
sion speed.
Thanks to the upgraded storage feature, the TTS (Text-to-Speech) function of X20 PRO can quickly and
conveniently convert typed input English words into spoken speech. This enables the ETHOS system to more
flexibly match the triggered operational status using generated speech file when specific functions are activated,
and to alert clearly outdoors with the digital power amplifier module.
Introduction
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
● SK: Self-Lock Button
● SL: Self-Lock Button
You can choose the Switch and define its
position in the HARDWARE menu.
Stick
Slider
SD
SC
SG
SH
Stick
SYS,
MDL,
DISP,
RTN
Slider
SA
SB
SE
SF
Hook
Power Switch
2.4G Internal Antenna
Display Screen
Custom button
Speaker
Overview
1. USB port is for upgrading, reading/
writing Micro SD cards and internal
memory of radio contents and charging.
(Micro SD card is not provided with
shipment.)
2. Smart Port is for firmware upgrade for
all FrSky S.Port devices.

FrSky TANDEM X20 Pro Specifications

General

Frequency Range	2.4 GHz
Channels	16
Protocol	ACCESS, ACCST D16
Operating Current	300 mA
Operating Temperature	-10°C to 60°C
Operating System	ETHOS
External Module Bay	Yes
Telemetry	Yes
Voice Output	Yes
Haptic Feedback	Yes
Operating Voltage	6.5V - 8.4V
LCD Resolution	480x272 pixels
Charging Port	USB Type-C
Battery	2S Li-ion 7.4V 5000mAh
Display	4.3 inch color touchscreen
Internal RF Module	Dual-band (2.4GHz & 900MHz)
RF System	Dual-band (2.4GHz & 900MHz)

Summary

TD-ISRM PRO RF Performance

Functional Inputs and Metal Parts

Built-in Storage and TTS Function

Overview of Transmitter Controls

Switch Descriptions

Details on the types and positions of various switches on the transmitter.

Port Functions Overview

Explanation of the USB port for upgrades and the Smart Port for firmware updates.

Technical Specifications

Key Features of TANDEM X20 PRO

2S Li-battery Balance Charging via USB-C

Navigation Control Guide

ETHOS Suite Software Usage

ETHOS Operating System: Model Creation

Model Selection and Type Configuration

Guide to selecting model type and creating a new model in the ETHOS system.

Model Channel Configuration

Steps for configuring the channels for a newly created model.

Setting Model Name and Picture

Instructions on naming the model and assigning a picture for identification.

Internal RF Module Setup: Enabling

Internal RF Module Setup: Configuration

RF System Parameter Configuration

Configuring RF system parameters like state, type, antenna, and power.

Channel Range Configuration

Setting up the channel range for the internal RF module.

Model ID Assignment

Assigning a unique Model ID for receiver identification.

Internal RF Module Setup: Binding and Power

Receiver Registration Process

Process for registering a receiver with the transmitter for TW Mode.

Automatic Binding (Smart Match)

Steps for automatically binding receivers using the Smart Match feature.

RF Power Level Adjustment

Adjusting RF power levels for extended control range.

Performing Radio Range Check

Text to Speech (TTS) Function Setup

Create Special Function for 'Play Text'

Setting up a special function to play text output.

Enable and Configure TTS Active Condition

Enabling the TTS function and defining its activation conditions.

Inputting Text for TTS

Inputting text for the Text to Speech function using the on-screen keyboard.

Configuring Failsafe Modes

Failsafe Mode Options Explained

Explanation of the three available failsafe modes: No Pulse, Hold, and Custom.

Custom Failsafe Channel Setup

Detailed steps for configuring custom failsafe positions for each channel.

Regulatory Compliance

General Flying Safety Precautions

Battery Management and Safety

Flying Location Recommendations

Pre-Flight and Flying Procedures

Software Updates and Resources