Ebyte E280-2G4T12S, User Manual

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Chengdu Ebyte Electronic Technology Co.,Ltd. E280-2G4T12S User Manual
Copyright ©2012–2021
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Chengdu Ebyte Electronic Technology Co.,Ltd.
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damaged risk);
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Try away from some of the physical layer of 2.4GHz TTL protocol, such as USB3.0;
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The antenna mounting structure has a great influence on the performance of the module, and it is important to ensure that the
antenna is exposed, it is best to vertical vertically. When the module is mounted inside the casing, high quality antenna can
extend the antenna to the outside of the casing;
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The antenna must not be installed inside the metal shell, which will cause the transmission distance to weaken.
9 Common problem
9.1 Transmission distance is not ideal
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When there is a linear communication barrier, the communication distance will attenuate;
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Temperature, humidity, same frequency interference, can result in increased communication packet loss rates;
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The ground absorption, reflecting radio waves, close to the ground test effect;
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Seawater has a strong absorption of radio wave, so the seaside test effect is poor;
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There is a metal object near the antenna, or in a metal shell, the signal attenuation will be very serious;
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Power register setting error, the air rate is too high (the higher the air rate, the closer distance);
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At room temperature, the power supply is lower than the recommended value, the lower the voltage, the smaller the
power is;
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Using antenna and module matching degree or antenna itself quality problem.
9.2 Module is easy to damage
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Check the power supply, make sure there is a need for the power supply voltage, such as exceeding the maximum,
causing the module permanent damage;
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Check the power stability, the voltage cannot fluctuate significantly;
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Make sure the installation process is an anti-static operation, the high frequency device is electrostatically
sensitivity;
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Make sure the installation process is not too high, some components are humidity sensitive devices;
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If there is no special demand, it is not recommended to use it too high, too low temperature.
9.3 The error rate is too high
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There are similar signal interference nearby, away from interference or modified frequencies, and channel
avoidance interference;
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Power is not ideal or may cause garbled, and be sure to ensure the reliability of the power supply;
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Extending the line, the feeder is poor or too long, and the error rate is also high.