Faq; Communication Range Is Too Short; Module Is Easy To Damage; Ber(Bit Error Rate) Is High - Ebyte E48-433M20S User Manual

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6 FAQ

6.1 Communication range is too short

When there is a linear communication obstacle, the communication distance will decay accordingly;
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Temperature, humidity, the same frequency interference, will lead to the communication packet loss rate increased;
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Ground absorption, reflection of radio waves, close to the ground test effect 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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There are metal objects near the antenna, or placed in the metal shell, the signal attenuation will be very serious;
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Power register setting is wrong, the air rate setting is too high (the higher the air rate, the closer the distance);
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At room temperature, the low voltage of the power supply is lower than the recommended value, and the lower the
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voltage, the lower the power generation;
The antenna is poor to match the module or the quality of the antenna itself.
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6.2 Module is easy to damage

Please check the power supply to ensure that between the recommended supply voltage, exceeding the maximum
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value will cause permanent damage to the module;
Please check the stability of the power supply, and the voltage cannot fluctuate;
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Please ensure anti-static operation during installation and use process and static sensitivity of high frequency
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devices;
Please ensure that the humidity should not be too high, and some components are humidity-sensitive devices;
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If there is no special demand, it is not recommended to use it at too high or too low temperature.
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6.3 BER(Bit Error Rate) is high

There is the same frequency signal interference nearby, stay away from the interference source or modify the
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frequency, channel to avoid interference;
The lock waveform on SPI is not standard, check whether there is interference on SPI line, SPI bus line should not
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be too long;
The power supply is not ideal may also cause disorderly code, be sure to ensure the reliability of the power supply;
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Extension line, feeder quality is poor or too long, will also cause high bit error rate.
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E48-433M20S User Manual
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