Chinowing D02 User manual

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D02
Data link
User manual V1.1.2
2020.10

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Content
Disclaimer .................................................................................................................... 3
Product notes........................................................................................ 错误！未定义书签。
Product introduction...........................................................................错误！未定义书签。
Item list................................................................................................... 错误！未定义书签。
Main module ........................................................................................................................ 4
Accessories ............................................................................................................................5
Product Operation Instruction ........................................................错误！未定义书签。
D02data link logo description.........................................................................................6
Connection Diagram of Ground End ...................................... 错误！未定义书签。
Connection Diagram of Airborne end ............................................................................7
Module usage steps........................................................................................................... 7
Diagram of Module Normal Connection ...............................错误！未定义书签。
P900 parameter configuration software instructions ........................................................ 9
Configure the software installation process..............................................................10
Configuration software introduction.....................................错误！未定义书签。
Point-to-point mode configuration method.......................错误！未定义书签。
Repeater mode configuration method ........................................................................ 14

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1. Disclaimer
Thank you for purchasing the D02 Dual Link Radio (hereinafter referred to as "D02"). Please read
this statement carefully before using it. By using it, you will be deemed to have accepted all the
content in this statement. Please install and use the product strictly in accordance with these
instructions. Shenzhen Chinowing Technology Co., Ltd will not bear any legal responsibility for
any results or losses caused by improper use, installation, final assembly, modification.
2. Product Notes
1) Power supply of D02 airborne unit and ground unit: DC7.4-12V (lithium battery 2s-6s), please
strictly follow this data to power the module.
2) Be sure to install the antennas before power on to avoid damage to the circuit.
3) Make sure the antenna is free of obstruction and bending, and keep it away from large metal
object to avoid blocking the communication.
4) Please do not disassemble or modify D02. If you encounter any unsolvable problems in the
process of installation or use, please contact us.
5) Maintain a suitable distance between each device to minimize electromagnetic interference
between the equipment.
6) Before use, please ensure that all the connection is tight and reliable, all components work
properly.
7) Before use, please check the surrounding environment to ensure that no other
900-930MHZ equipment interference, otherwise the D02 data transmission may be seriously
affected.
8) If you encounter any problems that cannot be solved during the installation or use of the
product, please contact us or refer to our website: www.chinowing.com

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3. Product Introduction
D02 radio is a data link transmission equipment.The ground terminal data can be sent to the
airborne terminal through the digital transmission signal,and the point-to-point,relay
station,point-to-multiple and other methods can be used for direct communication.It is mainly
used to solve the can transmit remote control signal and data transmission signal
simultaneously. It has the characteristics of small size, good integration and high sensitivity.D02
operates in the 902-928MHZ frequency band, max communication distance can reach 50KM.
4. Item List
Main modules
Ground unit ×1
Airborne unit x 1

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Accessories
Power cable x1
Standard USB wire
Parameters setting
cable
Power for module
（DC:7.4-12V)
Type-c is used for ground
terminal module parameter
configuration or serial port
connection
Used for parameters
setting for airborne
unit
GH 4pin TTL line
x1
Antenna x 2
AIR端与其它设备连接
902-928mhz天线

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5. Product Operation Instruction
D02 data link logo description
① data transmission indicator
When the XD light is on,it means the receiver has received data;when the TXD light is on,it means the receiver has
sent data.
② signal intensity
Indicator S1 S2 S3 is signal strength indicator. S1&S2&S3 ON, it means strong signal; S2&S3 ON, it means
moderate signal; S3 ON, it means weak signal.
③ SET key
Used to enter radio configuration mode
④ USB interface ⑤ DC 5V interface
Ground terminal data+power supply interface Ground terminal standby USB power supply interface
⑥ TTL interface ⑦ Airborne terminal DC7.4-24
Airborne terminal GH 4pin connect with flight controller Airborne terminal XT30 interface2-6S power supply

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Connection Diagram of Ground End
The ground terminal is a dual USB interface,which supports power supply or
data connection interface.The DC 5V interface only has power supply
function,and is mainly used for computers with USB2.0 current of 500ma.
Connection diagram of airborne end
1、Airborne terminal supply voltage 7.4-24V。
2、The cross connection between TTL and flight controller TX RX is as follow：
Module usage steps
After the connection at both ends is completed,please refer to the following steps
to check the status.(This step will have some differences due to different flight
controllers)
1.Use USB type-c to connect the USB interface of the ground end to the
computer,and the driver will be automatically installed when there is a net work
for the first time;
RX
TX
receiver GND
GND flight controller and
other equipment
TX
RX

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1. Open the device manager of the computer,you can see that the ground end is
correctly identified,the driver is installed correctly, and there is no yellow
exclamation.
2. Open the flight controller ground station software, select the corresponding
COM port,and connect to the flight controller.The normal connection of the flight
controller means that the data transmission link of the D02 module has been
connected.If the connection fails,please check the following points.
①Check whether the baud rate of the flight controller is consistent with the
baud rate of the D02 air terminal.
②Make sure that the serial port connection of D02 ground terminal is
normal.
③When you use the D02 parameter setting software,make sure the network
address of air end and ground end are the same.
④Make sure that the RX of the flight controller corresponds to the TX of D02
3.The default factory baud rate of D02 module is 115200,address:555 if you need
to change it,please refer to the software configuration chapter.
Diagram of module normal connection

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After power-on the airborne end and ground terminal, the indicator status is like the below, it
means 2 modules have connected normally.
Airborne unit
Ground unit
P900 parameter configuration software
instruction
In order to better serve our customers,our R&D team integrates the AT
configuration commands of the P900 module to support parameter configuration
for all Microhard P900 product series.Please pay attention to check the software
firmware version when using it.The software will be updated from time to time to
add new functions.Please keep an eye on our website to get the latest
software,firmware and technical support
You need to go to the official website “www.chinowing.com”to download
“D02.exe” if you configure D02 software.

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Software configuration installation process
1. Download D02.exe；
2. Click D02.exe and follow the prompts to install；
3. Run D02.exe；
Software configuration introduction
1. The D02 software provides two options for
entering configuration mode：
(1) Force Mode : use the configuration key to enter the configuration mode.
How to use： Press and hold the configuration button and power on D02,the
default baud rate is 9600,click to connect.

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(2) Jump Mode : jump from data mode to configuration mode without using
configuration buttons.
Directly power on,select the baud rate in the transparent transmission data
mode,click connect,the module will jump directly from the data mode to
configuration mode,and then configure the parameters.
2. the key is used to generate a random address, is used to lock
the generated network address.
3. the key is used to write new configuration parameters to the
module.
4. the key provides advanced configuration
functions,non-professionals should use it with caution,and the password
is ”chinowing”
5. Network address ：The ID code uniquely identifying the paired
connection,the network addresses of the air end and the ground end must be
consistent.
6. Working mode： master（主）、slave
（从）、
Repeater
（中继）
3 modes。
7. Baud rate(left) ：The baud rate is the transparent data transmission
rate,which must be consistent with the baud rate of the connected device.
8. Airspeed:the maximum rate of data transmission,the default is 172800.
9. Output power:the power supports 0.1W - 1W selection,the higher the
power,the longer the transmission distance.
10. Menu bar -> D02 -> Language -> Chinese and English language switching
function.
11. Menu bar -> tools -> AT command window interface,providing AT

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command operation for professionals.
12. Menu bar-> Help ->Version information about D02 configuration software.
Point to point mode configuration method
Point to point communication requires at least two modules,respectively
master-slave mode
Master mode setting:
1Power on and connect to the computer
2Select the corresponding com port and connection method,click
connect,if the corresponding parameters are displayed on the left,it
means that the module has successfully entered the configuration
mode.
3Select Master mode as the working mode,select the baud rate you
need,and the default airspeed,and the output power can be
selected from 0.1W -1W.The higher the power ,the longer the
transmission distance.

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4After the parameter setting is complete,click ，the message
bar below will prompt to write the configuration parameters.
From schema settings：
1.power on and connect to the computer
2.Select the corresponding com port and connection method,click
connect.if the corresponding parameters are displayed on the left,it
means that the module has successfully entered the configuration
mode.
3.Select slave mode as the working mode,and the default airspeed is
enough.The output power can be selected from 0.1W-1W.The higher
the power,the farther the transmission distance will be.
4. After the parameter setting is complete and click ，the message
bar below will prompt the parameters just written into the

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configuration.
The above is the point-to-point master slave setting method,without entering the all advanced
configuration mode,it can work normally if configured according to the above method.
Repeater mode configuration method
Repeater mode communication requires at least 3
modules,master,slave and repeater mode

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①Select the main mode of the ground terminal module,set the
corresponding baud rate and power,and click
②Click to enter the password “chinowing ”and configure the
parameters as follows in the advanced settings.Other default parameters
remain unchanged.After setting,click”save all”

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③Select the slave mode for the airborne unit module,set the corresponding
baud rate and power ,and click
5Click and enter the password “chinowing ”configure the

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parameters as follows in the advanced settings.Other default
parameters remain unchanged.After setting,click“Save All”
⑤Select the repeater mode on the repeater，
set the corresponding baud
rate and power，and click

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⑥Click and enter the password“chinowing”in advanced settings
configure the parameters as follows ，other default parameters remain
unchanged.After setting，click”save all”
Test ：After modifying the repeater mode ，the signal indicator light of the
repeater mode is different from that of the point-to-point one.The master shows
the signal strength of the repeater ，and the signal strength of the slave also
shows the signal strength of the repeater.
注意事项
When setting the repeater mode，the network addresses and
baud rates of the three modules must be consistent. In the advanced
parameters ，it is not recommended to change other parameters ，
otherwise it may cause the radio to fail to communicate.

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Dual repeater mode configuration method
Dual repeater mode communication requires at least 4 modules ，respectively
master-slave mode and 2 repeater modes.
For the specific configuration process，refer to the configuration process of
the repeater mode above.

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1、Common questions:
1.The ground station cannot connect to the flight controller？
Check whether the baud rate of D02 data transmission and the flight controller
are consistent,the setting must be consistent in order to communicate.
2.If the transmission distance is too short，the signal will be disconnected and
can not be connected？
1Check whether the antenna frequency band is 902-928Mhz.
2Check whether the antenna is an SMA inner needle.
3The installation location should be as far away from places with high current
as possible
4Check whether the power supply is normal
3.Is the connection established in the main mode or the signal light is off？
After the power is connected，the data sending and receiving signal indicator
light is required to be able to light up normally.
2、D02 ground unit keeps restarting？
Check if the USB interface of your computer is 3.0. If it is 2.0 ，you need to
connect DC 5V to the computer. If it is USB 3.0，connect a USB to work normally.