FrSky TD R12 - User Manual

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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

Instruction Manual for FrSky TD R12 & TD SR12 Manual

Version

1.0

Introduction

The Tandem (TD) dual-band receivers are unlike any other FrSky 2.4Ghz or 900Mhz receivers, they work

simultaneously at both 900Mhz and 2.4Ghz frequencies. That means TD receivers provide not only low latency

signal and long-range control but also benefit from the enhanced level of high reliability and anti-interference

performance.

The TD R12 & TD SR12 receiver is equipped with a triple antenna (2×2.4G & 1×900M) design that provides

multi-directional wide coverage for the remote signal and is designed for RC users who want to benefit from

resilience and long-range in their radio communications.

TD R12 & TD SR12 also provides a socket that can be used to connect the NFC Switch panel to enable the

built-in Power Switch function. Dual-power provides a safe and efficient way to power the system with your power

sources connected via a pair of standard XT30 connections. The dual-power consumption system is designed to

operate in balance mode, where it consumes the power line from either power source depending on which has

the higher voltage. With a built-in black box module, the data (Power & Signal related) under unusual status

during the flight can be recorded by TD receivers.

The configurable 12-channel ports are a big feature of TD R12 & TD SR12, each channel port can be assigned

as PWM, SBUS, FBUS, or 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.

ADV Stabilizer

The TD SR12 offers an ADV Stabilizer function which is an upgrade over the original classical gyroscope

stabilization modes. The ADV Stabilizer offers an advanced mode that provides more programmable stabilized

channels and flexibility.

The classical stabilization mode has been enhanced with 5 additional stabilization channels, providing pin

mapping to each channel in the multiple flight modes like Stabilization, Auto-Level, Hover, and Knife-Edge with

an airplane model.

In the advanced stabilization mode, all the output pins are configurable for stabilization and additional advanced

features such as Stab file sharing, programmable parameters, developer access, etc.

The advanced stabilizer feature incorporates high-precision telemetry sensors to monitor altitude, vertical speed,

etc. This ADV feature is an additional benefit compared to using a regular S series stabilization receiver.

Overview

33mm

17.9mm 48.5mm

VBATVBAT

INPUT:DC 3.5V~10V

LED

TD R12

12/24CH Telemetry

Switch

Upgrade

+AIN

VBATVBAT

INPUT:DC 3.5V~10V

LED

Switch

Upgrade

+AIN

TD SR12

12/24CH Telemetry & Stabilization

● Frequency: 900MHz & 2.4GHz

● Dimension: 48.5*33*17.9mm (L*W*H)

● Weight: 23g

● Operating Voltage: 3.5-10V (Recommend 2S Li Batteries)

Specifications

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Need help?

Do you have a question about the FrSky TD R12 and is the answer not in the manual?

The FrSky TD R12 & TD SR12 are advanced dual-band receivers designed for RC enthusiasts seeking enhanced reliability, long-range control, and anti-interference performance. These receivers operate simultaneously on both 900MHz and 2.4GHz frequencies, offering a robust and low-latency signal.

Function Description:

The core function of these receivers is to provide reliable radio communication for RC models. They feature a triple antenna design (two 2.4GHz and one 900MHz) for multi-directional wide coverage. A key innovation is the configurable 12-channel ports, which can be assigned as PWM, SBUS, FBUS, or S.Port, offering significant flexibility in setup. The FBUS protocol enables seamless pairing with multiple telemetry devices like Neuron ESCs and Advance Sensors, simplifying the overall build.

Both receivers include a socket for connecting an NFC Switch panel, activating a built-in Power Switch function. They support dual-power consumption, allowing two power sources to be connected via standard XT30 connections. The system operates in balance mode, drawing power from the source with the higher voltage. A built-in black box module records power and signal-related data during flights, particularly useful for diagnosing unusual statuses.

The TD SR12 model further distinguishes itself with an "ADV Stabilizer" function, an upgrade over traditional gyroscope stabilization. This advanced mode offers more programmable stabilized channels and greater flexibility. In its classical stabilization mode, it provides 5 additional stabilization channels with pin mapping for various flight modes such as Stabilization, Auto-Level, Hover, and Knife-Edge for airplane models. The advanced stabilization mode allows all output pins to be configured for stabilization and includes features like Stab file sharing, programmable parameters, and developer access. It integrates high-precision telemetry sensors to monitor altitude, vertical speed, and other critical data, offering an advantage over standard S series stabilization receivers.

Important Technical Specifications:

Frequency: 900MHz & 2.4GHz
Dimension: 48.5*33*17.9mm (L*W*H)
Weight: 23g
Operating Voltage: 3.5-10V (Recommended 2S Li Batteries)
Operating Current: ≤170mA
Continuous Current: ≤20A (power the device)
Instantaneous Current: ≤30A (power the device)
Voltage Measurement Range via AIN (External device): 0-35V (Battery Voltage Divider Ratio: 1:10)
Compatibility: Tandem series radio & TD protocol capable RF module
Power Input: Dual XT30 Connector
Antenna Design: Triple Antenna (2×2.4G & 1×900M antennas)
Channel Ports: 12 configurable (PWM / SBUS Out / FBUS / S.Port / SBUS In)
SBUS Out Port: Supports 16CH / 24CH mode
SBUS In Port: Supports Signal Redundancy
Race Mode: 4ms with Telemetry

Usage Features:

Dual-Band Operation: Simultaneous 900MHz and 2.4GHz for enhanced reliability and range.
Power Balancing: Efficient dual-power system drawing from the higher voltage source.
NFC Switch Function: External switch panel connectivity for convenient power control.
Configurable Channels: 12 versatile ports assignable as PWM, SBUS, FBUS, or S.Port.
FBUS Protocol: Simplifies telemetry integration with devices like Neuron ESCs and advanced sensors.
Advanced Stabilization (TD SR12): Offers basic and advanced stabilization modes with programmable channels and features.
High-Precision Telemetry (TD SR12): Built-in sensors for altitude, vertical speed, etc.
Flight Modes (TD SR12): Supports Stabilization, Auto-Level, Hover, and Knife-Edge modes, configurable via CH14 and CH15/CH16.
Quick Mode (TD SR12): Simplified stabilization, auto-level, and manual modes via CH14, with an emergency mode via CH16.
Gyro Gain Adjustment: CH13 can be used to adjust gyro gain, increasing with higher values up to ±100%.
High PWM Speed Mode: Can be activated for digital servos (warning: turn off for analog servos to prevent damage).
SBUS Channel Mode: Selectable between SBUS-16 and SBUS-24 modes.
Race Mode: Achieves down to 4ms latency for competitive flying.
OTA FW Update: Over-The-Air firmware updates for convenience.
Failsafe Settings: Three modes: No Pulse, Hold, and Custom, to ensure model safety upon signal loss.
IMU Mode (TD SR12): Offers OFF, BASIC, and ADV modes for stabilization module setup. BASIC mode for normal use, ADV mode for full configuration via RBmixer programmer.
CaliHorizontal Function (TD SR12): Activated in ADV mode for horizontal plane calibration.
Independent Stabilizing Functions (TD SR12): Two systems for CH1-6 and CH7-11, with independent settings, calibration, and self-check.
Gyroscope Sensor Calibration (TD SR12): Detailed 6-surface calibration procedure for the gyroscope sensor, ensuring accurate stabilization.
Servo Connection Guidance (TD SR12): Clear channel list for connecting servos to stabilization device ports, with antenna orientation instructions.
Mixer Channel and Radio Switch Setup (TD SR12): Guidelines for configuring mixer channels and radio switches, including CH13-16 for gain and flight modes.
Gain and Offset Configurations (TD SR12): Adjustable gains and offsets for Stab, Auto-Level, Hover, and Knife-Edge modes.
Flight Attitude Inspection (TD SR12): Recommended checks for compensation direction in Auto-Level, Knife-edge, and Hover modes, with options to invert channel outputs if needed.
Self Check (TD SR12): Procedure to calibrate maximum stick travel and confirm calibration completion.

Maintenance Features:

Black Box Data Record: Logs flight data (RX Reset Case, RSSI, VFR) for post-flight analysis and troubleshooting.
Over-The-Air (OTA) FW Update: Simplifies firmware updates without physical connection, ensuring the receiver stays current with the latest features and bug fixes.
Range Check Mode: Pre-flight range check function to identify potential signal loss issues due to environmental factors, reducing effective distance to 1/30 for testing.
Firmware Updates: FrSky continuously adds features and improvements, encouraging users to check their website for the latest firmware and manuals.