Ⅸ Common Problem; The Transmission Distance Is Not Ideal; Module Is Easily Damaged; Bit Error Rate Too High - Ebyte E49-400T30D Specifications

Chengdu Ebyte Electronic Technology Co.,Ltd.
Ⅸ Common problem

9.1 The transmission distance is not ideal

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When there is a straight line communication obstacle, the communication distance will be correspondingly
attenuated;
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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 close to the ground is poor;
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Seawater has a strong ability to absorb radio waves, so the seaside test effect is poor.
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If there is a metal object near the antenna, or is placed in a metal shell, the signal attenuation will
be very serious;
 The power register is set incorrectly, and the air rate is set too high (the higher the air rate, the
closer the distance);
 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;
 The antenna used is poorly matched with the module or the quality of the antenna itself is faulty.

9.2 Module is easily damaged

Please check the power supply to ensure that it is within the recommended power supply voltage. If it exceeds the
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maximum value, the module 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 sensitive to
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static electricity.
Please ensure that the humidity during installation and use should not be too high. Some components are
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humidity-sensitive 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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9.3 Bit error rate too high

There is co-frequency signal interference nearby, stay away from the interference source or modify the frequency and
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channel to avoid interference;
If the power supply is not ideal, it may also cause garbled characters. Be sure to ensure the reliability of the power

supply;
Poor quality or too long extension lines and feeders will also cause a high bit error rate;
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E49-400T30D Specifications
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