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Need help?Do you have a question about the FrSky TD MX Receiver and is the answer not in the manual?
Details physical dimensions, antenna, and overall design features of the TD MX receiver.
Lists technical specifications including frequency, dimensions, weight, voltage, and compatibility.
Highlights key features such as dual-band mode, triple antenna, black box, race mode, and telemetry.
Describes the meaning of Green, Blue, and Red LED states during receiver registration and binding.
Instructions on how to select the output mode for the telemetry port (S.Port, F.Port, FBUS).
Guide to changing the SBUS channel output mode to SBUS-16 or SBUS-24.
Steps to enable the low-latency Race Mode for faster response times.
Describes the process for updating the receiver firmware wirelessly (Over-The-Air).
Explains how to set failsafe modes (no pulse, hold, custom) for channel outputs.
The FrSky TD MX Receiver is a sophisticated dual-band receiver designed to provide enhanced control and reliability for remote-controlled systems. Unlike traditional 2.4GHz or 900MHz receivers, the TD MX operates simultaneously on both frequencies, offering a unique blend of low-latency signal control and extended control range, coupled with superior reliability and anti-interference performance. This dual-band capability ensures a robust connection, even in challenging RF environments, making it suitable for a wide range of applications where signal integrity is paramount.
One of the standout features of the TD MX is its triple antenna design, which is engineered to provide multi-directional coverage for the remote signal. This design maximizes the chances of maintaining a strong signal link, regardless of the orientation of the aircraft or the receiver. The 900MHz antenna, in particular, boasts a newly designed small form factor while retaining the high-performance characteristics of its larger predecessors. This compact design allows for easier integration into various models without compromising signal quality.
The TD MX receiver is equipped with four PWM channels, making it a lightweight and compact solution for controlling multiple functions. Beyond the basic PWM outputs, it features several onboard ports that significantly expand its functionality. These include an SBUS Out port, an SBUS In port for signal redundancy, and an S.Port. The integration of the FBUS protocol is a key innovation, enabling seamless pairing with multiple telemetry devices such as Neuron ESCs and Advance Sensors. This simplifies the setup process for complex builds, reducing wiring clutter and improving overall system integration.
A notable diagnostic feature of the TD MX is its built-in black-box function. This allows the receiver to record power and signal-related data under unusual status conditions during flight. This recorded data can be invaluable for post-flight analysis, helping users diagnose issues, optimize performance, and understand the behavior of their system in various scenarios. This black-box capability adds a layer of diagnostic power that enhances safety and troubleshooting efficiency.
For registration and automatic binding, the process is streamlined. Using a TANDEM X20 transmitter as an example, users can navigate to the Model settings, select RF System, and turn on the internal module. After selecting TD MODE (Type) and configuring antenna and power settings, the receiver can be registered. The binding process involves connecting the battery to the receiver while holding down a button, which activates the registration status indicated by the RED and GREEN LEDs. Once the Register ID, RX name, and UID are displayed, clicking "Register" on the transmitter completes the registration, with the receiver's LEDs flashing to confirm. Subsequent binding steps involve selecting the receiver on the transmitter and connecting the battery, resulting in the GREEN LED remaining lit and the BLUE LED flashing, confirming a successful bind. A significant convenience is that once the receiver is registered, the button is no longer needed for future binding processes, simplifying subsequent setup.
The receiver also supports Over-The-Air (OTA) firmware updates, which can be performed through the transmitter. For instance, with a TANDEM X20, users can access the File manager, select the FW, and choose "Flash RX by int. OTA." After powering on the receiver and initiating the flash process, the transmitter will display "Success," and the receiver will resume normal operation after a brief delay. It's important to note that binding operations should not be performed during firmware upgrades, and firmware updates should be done after the receiver has been registered (OTA).
Failsafe is another critical feature, designed to ensure safety by setting a preset channel output position when control signal is lost for a specified period. The TD MX supports various failsafe modes, including "no pulse," "hold," and "custom" for each channel, configurable via the transmitter interface. This allows users to define specific actions for their model in the event of signal loss, such as returning to a neutral position or activating a recovery mode, thereby minimizing potential damage or loss.
The TD MX offers flexible port configurations, allowing users to switch between S.Port, F.Port, and FBUS (F.Port2) modes. This can be done through the Set-Options menu on the transmitter, providing adaptability for different telemetry and control setups. Similarly, the SBUS channel mode can be switched between SBUS-16 and SBUS-24 modes in the RX Settings. When using redundancy functions, it is crucial to ensure that both primary and secondary receivers are configured to the same SBUS mode for seamless operation.
For high-performance applications, the TD MX supports a Race mode, which can reduce latency down to 4ms. This mode is activated by setting the Channel Range to CH1-CH8 in the Model-RF system and selecting a switch to initiate the race mode. This feature is particularly beneficial for competitive racing and other scenarios where minimal latency is essential for precise control.
In summary, the FrSky TD MX Receiver is a feature-rich, dual-band receiver that combines advanced signal redundancy, flexible port configurations, diagnostic capabilities, and high-performance modes. Its simultaneous dual-band operation, triple antenna design, and FBUS protocol integration make it a versatile and reliable choice for demanding RC enthusiasts and professionals seeking enhanced control, safety, and ease of use.
General| Telemetry | Yes |
|---|---|
| Voltage Measurement Range via AIN2 (External Device) | 0-3.3V |
| Max RF Output Power | 20dBm |
| Compatibility | ACCST D16, ACCESS |
| Operating Voltage | 3.5V - 10V |
| Operating Current | 100mA @ 5V |
| Operating Range | >2km |
| Voltage Measurement Range via Battery Voltage Port (AIN1) | 0V - 36V |
| Ports | SBUS, S.Port |
| Sensitivity | -98dBm |
| Firmware Update | Yes, via S.Port |
