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10 

www.

foxtechfpv

.com 

2、

According to Pic.1 and Pic.2

connect ground unit to PC or connect air unit to 

PC. Data cable for air unit: white cable connect to TX, black cable-GND, green 
cable-RX.

Pic.1  Air unit connected to Configuration Software

Pic.2 Ground unit connected to Configuration Software

Summary of Contents for RB20

Page 1: ...www chinowing com RB20 Signal Relay user manual V2 1 2019 1 ...

Page 2: ...oduct Notes 3 Brief Introduction 4 Product List 4 Using Instructions 5 Ground Unit Diagram 5 Air Unit Diagram 6 RB20 Indicators 8 RB20 Connection Diagram 9 Parameter Configuration 9 Out of Control Protection Setting 12 Firmware Upgrade 12 FAQ 14 ...

Page 3: ...o 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 dur...

Page 4: ...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 P P Pr r ro o od d du u uc c ct t t L L Li i is s st t t Main Module Ground Unit Air unit ...

Page 5: ...puts S BUS and Serial port if your remote controller or receiver not support S BUS so you need to buy a PWM to S BUS module G G Gr r ro o ou u un n nd d d U U Un n ni i it t t D D Di i ia a ag g gr r ra a am m m Poweer cable x2 usb cable Data cable DC 7 4 12V For grount unit parameter tuning or serial connection For air unit parameter tuning ...

Page 6: ...6 www foxtechfpv com RC Receiver ...

Page 7: ...20 digital transmission link is connected If the connection fails please check the following points 1 The baud rate of the flight controller is same as the baud rate of RB20 2 Ensure that the RB20 ground unit driver is installed successfully 3 Use the RB20 parameter setting software to ensure that all parameter settings for RB20 air and ground unit are consistent 4 Ensure that RX of FC to TX RB20 ...

Page 8: ... indicator L2 L2 steady light in the configuration mode SET Button Used to enter the configuration mode or set the runaway protection output value or upgrade firmware Data transmission indicator RXD light is on receiver has data reception TXD light is on receiver has data transmission Signal Strength S1 S2 S3 signal stregth indicator all these three indicators are on strongest signal quality only ...

Page 9: ...tuations you may need to modify the RB20 parameters 1 The flight control baud rate is inconsistent with the RB20 preset baud rate 2 Multiple Rb20 occupy the same communication channel causing communication blocking 3 Have special communication bandwidth and communication power requirements Please follow the steps below to modify the parameters The parameter modification method of ground unit and a...

Page 10: ...nd Pic 2 connect ground unit to PC or connect air unit to PC Data cable for air unit white cable connect to TX black cable GND green cable RX Pic 1 Air unit connected to Configuration Software Pic 2 Ground unit connected to Configuration Software ...

Page 11: ...et button again or power up again to exit the configuration mode Note 1 Please ensure that the parameters of the ground unit and air unit are exactly the same otherwise the two modules cannot communicate 2 Communication bandwidth and communication power directly affect communication quality and communication distance If you don t understand its meaning please do not modify these two parameter valu...

Page 12: ...es not receive the S BUS data from the ground unit for 3s the air end will always output the previously written out of control protection value until the S BUS data from the ground end is received 3 Turn off out of control protection When the air end is properly connected to the ground end and there is remote control data transmission press and hold the Set button 3S on the air unit to turn off th...

Page 13: ...wer on then the L2 light is always on Then press and hold the Set button again until L1 and L2 are always on and the software displays the port number at the same time it indicates that the upgrade mode is entered 3 Open the correct firmware you downloaded If it is correct will display firmware file identification is completed ...

Page 14: ... connect the serial port or transmission signal garbled Please check whether the baud rate of the serial port on the air unit and the ground unit is the same set the baud rate corresponding to the ground station software 2 Two or more devices have interference powered on at the same time The ID of each set must be different and the channel should also be set to a different value to avoid co channe...

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