FrSky TD MX Receiver Instruction Manual

Instruction Manual for FrSky TD MX Receiver

Introduction

Neither like other FrSky 2.4G receivers nor 900M receivers, the Tandem dual-band series receivers work simultane-
ously at both 900M and 2.4G frequencies that means it can give not only low latency signal control but long control
range with an enhanced level of high reliability and anti-interference performance.
The Tandem series receivers adopt the triple antenna design that can give the multi-directional coverage as wide
as possible for the remote signal. The 900M antenna comes with a newly designed small form factor, but it has the
equivalent high-performance as the original 900M antenna.
TD MX offers 4 PWM channels on a small board with lightweight, and it also has multiple ports onboard like SBUS
Out, SBUS In (Signal Redundancy), S.Port. With the FBUS protocol, the Tandem series receivers can open up the
possibility of seamlessly pairing with multiple telemetry devices (Neuron ESC, Advance Sensors, etc.) as well as
simplifying the builds setup. In addition, the data (Power & Signal related) under unusual status during the flight can
be recorded by Tandem receivers through the built-in black-box function.
Overview
25mm
GND
G C D V
VIN
S.Port
2.4G
TEST
SBUS OUT
SBUS IN
2.4G
4
900M
3
2
1
Button

Specifications

● Frequency: 2.4GHz & 900MHz
● Dimension: 25*21*4mm (L*W*H)
● Weight: 7.1g
● Operating Voltage: 3.5-10V (Please ensure the supplied voltage exceed 3.5V during the use.)
● Compatibility: Tandem series transmitter & TD protocol capable RF module
● Triple 2.4G/900M Antenna
● – 2 External 2.4G antenna (IPEX1)
*
● – 1 Newly designed 900M antenna
*
It only matches with the Tandem series transmitters with dual-band transmitter module.

Features

● Simultaneous working dual-band TD mode
● Triple antenna design for multi-directional coverage
● Black Box function
● 4ms Race Mode with Telemetry
● Long control range
● Over-The-Air (OTA) FW update
● 4 PWM channels
● S.Port (with the FBUS protocol)
● SBUS Out / SBUS In (Redundancy Func.)
FrSky Electronic Co., Ltd. www.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
900MHz Receiver Antenna
Contact us : frsky@frsky-rc.com
Instruction Manual for FrSky TD MX Receiver
Registration & Automatic binding
Follow the step below to finish the Registration & binding procedure:
1. For TANDEM X20 as an example,enter into the Model, select RF System, turn on the internal module, select
status [ON] and TD MODE(Type). You can select Internal / External antenna and the power as you need, then
select [Register].
2. Connect the battery to the receiver while holding the button on the receiver. The RED LED and GREEN LED on
the receiver will be on, indicating into the [Reg] status.
3. When it shows the Register ID, RX name and UID,click [Register]. The RED LED and GREEN LED on the
receiver will flash, and the transmitter displays [Registration OK ].
4. Turn off the receiver.
5. Move the cursor to select the any one of the 3 receivers [Bind].
6. Connect the battery to the receiver.
7. Select the RX, the GREEN will keep lit and the BLUE will flash. Then the transmitter displays [Bind successful].
Note: Once the receiver is registered, the button is not needed anymore in the binding process.

LED state

Green LED Blue LED
Off
On
Flash Off
On Off
On Flash
On Flash
Off Off

How to switch the S.Port/F.Port/FBUS (F.Port2)

Enter into the Set-Options, click the Telem.Port, and select S.Port/F.Port/FBUS (F.Port2).

How to switch SBUS channel mode

Enter into RX Settings, click [SBUS], then select SBUS-16 mode or SBUS-24 mode.
Note: When using redundancy function, ensure the same mode of primary and secondary receivers

How to enter into the Race mode (down to 4ms)

Enter into Model-RF system, select the Channel Range as CH1-CH8. Click [Switch Positions] and select a switch to
start the race mode.
FrSky Electronic Co., Ltd. www.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
G C D V
2.4G
2.4G
900M
Button
Red LED Status
On Register
Flash Register successfully
On Bind
Off Bind successfully
Off Working normally
On Failsafe
Contact us : frsky@frsky-rc.com