Hardware Design; The Transmission Distance Is Not Ideal; Modules Are Vulnerable To Damage; Bit Error Rate Is Too High - Ebyte E52-400/900NW22S User Manual

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XI. Hardware Design

11.1 The transmission distance is not ideal

When there are straight-line communication obstacles, the communication distance will be correspondingly

attenuated;
Temperature, humidity, and co-channel interference will lead to increased communication packet loss rate;

The ground absorbs and reflects radio waves, and the test effect is poor when close to the ground;

Seawater has a strong ability to absorb radio waves, so the seaside test results are poor;

If there are metal objects near the antenna, or if it is placed in a metal case, the signal attenuation will be very

serious;
The power register setting is wrong and the air rate is set too high (the higher the air rate, 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 smaller the transmit power;
There is a poor match between the antenna and the module or there is a problem with the quality of the antenna

itself.

11.2 Modules are vulnerable to damage

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;
Please check the stability of the power supply. The voltage cannot fluctuate greatly and frequently;

Please ensure anti-static operation during installation and use, as high-frequency devices are sensitive to static

electricity;
Please ensure that the humidity during installation and use should not be too high, as some components are

humidity-sensitive devices;
If there are no special needs, it is not recommended to use it at too high or too low temperature.


11.3 Bit error rate is too high

If there is co-channel signal interference nearby, stay away from the interference source or modify the frequency or

channel to avoid interference;
Unsatisfactory power supply may also cause garbled code, so be sure to ensure the reliability of the power supply;

Extension cords and feeders of poor quality or too long will also cause a high bit error rate.

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E52-400/900NW22S User Manual