FrSky RB-25 User Manual

Version
1.0
Instruction Manual for FrSky RB-25 & RB-25S
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
Specifications
● Dimension: 53*40*16mm (L*W*H)
● Weight: 25.6g (RB-25) / 26.7g (RB-25S)
● Number of Channel Ports: 18 (PWM/FBUS/S.Port/SBUS Out)
● 3 RX Input Ports & 1 LED Indicator Port
Introduction
The RB-25/RB-25S builds on the success of the previous trusted Redundancy Bus Series by adding new
advanced features combined with a compact new design which meets the needs of users who want a flight-safe
system built in a smaller size unit.
Triple Receiver Redundancy & Dual Power Input
RB-25/RB-25S has been designed to offer both dual-power and triple-receiver redundancy. This provides the
user triple receiver signal and telemetry redundancy by adding multiplex ports (RX1-3 IN / S.Port). 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 sources depending on which has the higher voltage.
Advanced Stabilizer (RB-25S)
The RB-25S 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 RB25S output pins are configurable for stabilization and additional
advanced features such as File Sharing, Programmable Parameters, and Developer Access, etc.
Diversified Sensor Telemetry
The RB-25/RB-25S also works as an extensive sensor module with various built-in sensors including diversified
telemetry. The RB-25S also includes the high-precision telemetry sensor for monitoring altitude, vertical speed,
etc. can be also used as an alternative to using a GR or S series receiver.
Power Switch Function
The built-in power switch function draws the support of using multiple types of external switches (e.g. NFC switch,
Pin Plug, etc.) that enables flexible options on how the power can be switched on/off without the need to
plug/unplug the battery connections.
16mm
40mm
53mm
10 11 12 13 14 15 16 17 18
9 8 7 6 5 4 3 2 1
CH9 CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1 RX1 S.P LED
CH10
CH11
CH12 CH13 CH14 CH15 CH16 CH17 CH18
RX2 RX3
53mm
CH9 CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1 RX1 S.P LED
CH10
CH11
CH12 CH13 CH14 CH15 CH16 CH17 CH18
RX2 RX3
10 11 12
13 14 15 16 17 18
9 8 7 6 5 4 3 2 1
Overview
Switch
Switch
GND
VOUT

FrSky RB-25 Specifications

General

Brand	FrSky
Model	RB-25
Category	Control Unit
Language	English