Chengdu Ebyte Electronic Technology Co., Ltd.
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
Solder Paste
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)
Peak temperature(Tp)
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Profile Feature
Sn-Pb Assembly
Sn63/Pb37
100℃
150℃
60-120 sec
3℃/second max
183℃
60-90 sec
220-235℃
E220-400T30S User manual
Pb-Free Assembly
Sn96.5/Ag3/Cu0.5
150℃
200℃
60-120 sec
3℃/second max
217℃
30-90 sec
230-250℃
20