Common Problems; Transmission Distance Is Not Ideal; Module Is Easily Damaged; Bit Error Rate Is Too High - Ebyte E103-W07 User Manual

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+OK\r\n
After waiting for the module to return ">", send "hello mqtt":
Hello mqtt
+OK：10\r\n
Data received at the remote end
Hello mqtt

7 Common problems

7.1 Transmission distance is not ideal

When there is a straight line communication obstacle, the communication distance will be attenuated accordingly;

Temperature, humidity, and co-frequency interference will increase the communication packet loss rate;
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The ground absorbs and reflects radio waves, and the test results near the ground are poor;
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Sea water has a strong ability to absorb radio waves, so the seaside test results are poor;
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If there are metal objects near the antenna or placed in a metal shell, the signal attenuation will be very serious;
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The power register is set incorrectly, and the air speed is set too high (the higher the air speed, the closer the
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distance);
The low voltage of the power supply at room temperature is lower than the recommended value, the lower the

voltage, the lower the power output;

7.2 Module is easily damaged

Please check the power supply to ensure that it is within the recommended power supply voltage. If it exceeds the

maximum value, it will cause permanent damage to the module;
Please check the stability of the power supply, and the voltage should not fluctuate greatly and frequently;
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Please ensure anti-static operation during installation and use, and high-frequency components are electrostatically

sensitive;
Please ensure that the humidity should not be too high during installation and use, and some components are

humidity sensitive devices;
If there is no special requirement, it is not recommended to use it at too high or too low temperature.


7.3 Bit error rate is too high

There is co-frequency signal interference nearby, stay away from the interference source or modify the frequency

and channel to avoid interference;
The clock waveform on the UART is not standard, check whether there is interference on the UART line;
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Unsatisfactory power supply may also cause garbled codes. Be sure to ensure the reliability of the power supply;
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E103-W07 User Manual
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