Chengdu Ebyte Electronic Technology Co.,ltd. E18-MS1PA2-PCB User Manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co.,Ltd. 8-12
lower the transmitting power；
Due to antenna quality or poor matching between antenna and module.
7.2 Module is easy to damage
Please check the power supply source, ensure it is between the recommended supply voltage, voltage higher than
the maximum 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.
7.3 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;
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.
8. Welding instruction
8.1 Reflow soldering temperature
Preheat Temperature min
（
Tsmin
）
Preheat temperature max (Tsmax)
Preheat Time (Tsmin to Tsmax)(ts)
Average ramp-up rate(Tsmax to Tp)
Liquidous Temperature (TL)
Time
（
tL
）
Maintained Above
（
TL
）
Time below liquid phase
line
Aveage ramp-down rate（Tp to Tsmax）
Time 25℃ to peak temperature
Time to peak temperature
for 25℃
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