Module Is Easy To Damage; Ber(Bit Error Rate) Is High - Ebyte E220-400M30S User Manual

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6.2 Module is easy to damage

Please check the power supply source, ensure it is within the recommended range, high voltage will damage the
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module;
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
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susceptibility;
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.
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6.3 BER(Bit Error Rate) is high

There are co-channel signal interference nearby, please be away from interference sources or modify frequency and
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channel to avoid interference;
The clock waveform on SPI is not standard, check whether there is interference on SPI line, and SPI bus line should
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not be too long;
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.
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E220-400M30S User Manual
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