Ebyte E22-400T30S, Руководство пользователя

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Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30S_User Manual _EN
Copyright ©2012–2020, Chengdu Ebyte Electronic Technology Co., Ltd.
21
Chapter 11 Frequently Asked Questions
11.1 The transmission distance is not ideal
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When there is a straight-line communication obstacle, the communication distance will be attenuated accordingly;
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Temperature, humidity, and co-channel interference will increase the communication packet loss rate;
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The ground absorbs and reflects radio waves, and the test effect is poor when it is close to the ground;

Seawater has a strong ability to absorb radio waves, so the seaside test effect is poor;

There are metal objects near the antenna, or placed in a metal case, 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 distance);
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The low voltage of the power supply at room temperature is lower than the recommended value, and the lower the voltage, the
lower the output power;
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The matching degree between the antenna and the module is poor or the quality of the antenna itself is problematic.
11.2 Modules are 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;
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Please check the stability of the power supply, the voltage cannot fluctuate greatly and frequently;

Please ensure anti-static operation during installation and use, and high-frequency devices are electrostatically sensitive;

Please ensure that the humidity during installation and use should not be too high, some components are humidity sensitive
devices;
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If there is no special requirement, it is not recommended to use it at too high or too low temperature.
11.3 BER is too high
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There is co-channel signal interference nearby, stay away from the source of interference or modify the frequency and channel to
avoid interference;
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Unsatisfactory power supply may also cause garbled characters, so be sure to ensure the reliability of the power supply;
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Poor quality or too long extension cables and feeders will also cause high bit error rates.