Ebyte E78-900M22S1A, User Manual

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Chengdu Ebyte Electronic Technology Co., Ltd. E78-900M22S1A User Manual
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6.FAQ
6.1 Communication range is too short
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The communication distance will be affected when obstacle exists.
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Data lose rate will be affected by temperature, humidity and co-channel interference.
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The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.
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Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.
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The signal will be affected when the antenna is near metal object or put in a metal case.
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Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the
distance).
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The power supply low voltage under room temperature is lower than 2.5V, the lower the voltage, the lower the
transmitting power.
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Due to antenna quality or poor matching between antenna and module.
6.2 Module is easy to damage
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Please check the power supply source, ensure it is 2.0V~3.6V, voltage higher than 3.6V will damage the module.
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Please check the stability of power source, the voltage cannot fluctuate too much.
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Please make sure antistatic measure are taken when installing and using, high frequency devices have electrostatic
susceptibility.
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Please ensure the humidity is within limited range, some parts are sensitive to humidity.
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Please avoid using modules under too high or too low temperature.
6.3 BER (Bit Error Rate) is high
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There are co-channel signal interference nearby, please be away from interference sources or modify frequency and
channel to avoid interference;
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Poor power supply may cause messy code. Make sure that the power supply is reliable.
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The extension line and feeder quality are poor or too long, so the bit error rate is high;