Chengdu Ebyte Electronic Technology Co.,Ltd.
E220-900M30S User Manual
Copyright ©2012–2021
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Chengdu Ebyte Electronic Technology Co.,Ltd.
11
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
module;
Please check the stability of power source, the voltage cannot fluctuate too much;
Please make sure antistatic measure are taken when installing and using, high frequency devices have electrostatic
susceptibility;
Please ensure the humidity is within limited range, some parts are sensitive to humidity;
Please avoid using modules under too high or too low temperature.
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
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
not be too long;
Poor power supply may cause messy code. Make sure that the power supply is reliable;
The extension line and feeder quality are poor or too long, so the bit error rate is high.
