Faq; Communication Range Is Too Short; Module Is Easy To Damage; Error Rate Is High - Ebyte E104-BT5040U User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.

6. FAQ

6.1 Communication range is too short

When there is a straight line communication obstacle, the communication distance will be attenuated accordingly;
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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 is a metal object near the antenna or placed in a metal shell, the signal attenuation will be very serious;
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The power register setting is wrong, the air speed setting is too high (the higher the air speed, the closer the distance);
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The low voltage of the power supply at room temperature is lower than the recommended value, the lower the voltage, the lower
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the power output;
The matching degree of the antenna and the module is poor or the quality of the antenna itself is problematic.
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6.2 Module is easy to damage

Please check the power supply to ensure that it is within the recommended power supply voltage. If it exceeds Max, the module
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will be permanently damaged;
Please check the stability of the power supply, 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;
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Please ensure that the humidity during installation and use should not be too high, and some components are humidity sensitive
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devices;
If there is no special requirement, it is not recommended to use it at too high or too low temperature.
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6.3 Error Rate is High

There is co-frequency signal interference nearby, stay away from the interference source or modify the frequency and channel to
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avoid interference;
The clock waveform on SPI is not standard, check whether there is interference on the SPI line, and the SPI bus line should not
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be too long;
Unsatisfactory power supply may also cause garbled codes. Ensure the reliability of the power supply;
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Poor or too long extension cables and feeders can also cause high bit error rates.
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E104-BT5040U Datasheet