Foxtech RB20 User Manual
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RB20
Signal Relay
V2.1
user manual
2019.1
2
www.foxtechfpv.com
Content
isclaimer . .............................................................................................................. 3
D
Product Notes
Brief Introduction
Product List
Using Instructions
Ground Unit Diagram
Air Unit Diagram
RB20 Indicators
RB20 Connection Diagram
Parameter
Out-of-Control Protection Setting
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Configuration .................................................................................... 9
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Firmware Upgrade
FAQ
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Thanks for purchasing the RB20 signal relay. Please use RB20 according to local
radio regulations. Please read this statement carefully before using it. Once used,
it is deemed to be an endorsement and acceptance of the entire contents of this
statement. Please strictly follow the instructions to install and use the product.
FOXTECH TRADE CO., LTD will not bear any legal responsibility for any consequences
and losses caused by improper use, installation, assembly and modification of
customers.
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1. Input voltage of RB20 ground and air unit is DC7.4 - 12V(lipo 2s - 3s)，please
strictly follow this parameter to power the module.
2. Be sure to install the antenna before powering up to avoid damage to the circuit.
3. Make sure that the antenna is free from obstructions in using process, and try to
keep away from large metal objects to avoid communication obstruction.
4. Do not disassemble or reassemble RB20 module, If you encounter problems that
cannot be solved during installation or use, please contact FOXTECH or your agent.
5. Keep the proper distance between the electronic devices during installation to
minimize electromagnetic interference between devices.
6. Make sure all connections are securely fastened and all parts are working properly
before use.
7. Please check the surrounding environment before use to ensure that there is no
interference from other 840MHZ-930MHZ equipment, otherwise the RB20 data
transmission may be seriously affected.
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RB20 Signal Relay is designed to work with radio controller to achieve the long range
requirements. The RB20 ground unit could be connected to PC through a TTL-USB cable,
to realize data transmission between PC and RB20 air unit, also could realize parameter
tuning. The max communicate range is 30km.
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Main Module
Ground Unit
Air unit
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Accessories
Poweer cable x2
usb cable
Data cable
（DC:7.4-12V)
For grount unit parameter
tuning or serial connection
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RB20 has 2 signal outputs:
S, so you need to buy a
receiver not support
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S-BU
For air unit
parameter tuning
S-BUS
and Serial port.if your remote controller or
PWM
to
S-BUS
module.
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