Ebyte E220-400T30S, User Manual

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Chengdu Ebyte Electronic Technology Co., Ltd. E220-400T30S User manual
Copyright ©2012– 2018 ， Chengdu Ebyte Electronic Technology Co.,Ltd.
20
distance).
⚫ The power supply low voltage under room temperature is lower than 2.5V, the lower the voltage, the lower the
transmitting power.
⚫ Due to antenna quality or poor matching between antenna and module.
10.2 Module is easy to damage
⚫ Please check the power supply source, ensure it is in right range, voltage higher than max value 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.
10.3 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;
11 Production guidance
11.1 Reflow soldering temperature
Profile Feature Sn-Pb Assembly Pb-Free Assembly
Solder Paste Sn63/Pb37 Sn96.5/Ag3/Cu0.5
Preheat Temperature min
（
Tsmin
） 100℃ 150℃
Preheat temperature max (Tsmax)
150℃ 200℃
Preheat Time (Tsmin to Tsmax)(ts) 60-120 sec 60-120 sec
Average ramp-up rate(Tsmax to Tp)
3℃/second max 3℃/second max
Liquidous Temperature (TL)
183℃ 217℃
Time
（
tL
）
Maintained Above
（
TL
）
60-90 sec 30-90 sec
Peak temperature
（
Tp
）
220-235℃ 230-250℃