Ebyte E220-400T22S, Руководство пользователя

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Chengdu Ebyte Electronic Technology Co., Ltd. E220-400T22S User Manual
Copyright ©2012–2020,
Chengdu Ebyte Electronic Technology Co., Ltd.
17

The low voltage of the power supply at room temperature is lower than the recommended value, the lower the voltage, the lower
the power output;
 The matching degree of the antenna and the module is poor or the quality of the antenna itself is problematic.
10.2 Module is easy to damage

Please check the power supply to ensure that it is within the recommended power supply voltage. If it exceeds the maximum
value, the module will be permanently damaged;

Please check the stability of the power supply, and the voltage should not fluctuate greatly and frequently;

Please ensure anti-static operation during installation and use, and high-frequency components are electrostatically sensitive;

Please ensure that the humidity during installation and use should not be too high, and some components are humidity sensitive
devices;

If there is no special requirement, it is not recommended to use it at too high or too low temperature.
10.3 BER (Bit Error Rate) is high

There is co-frequency signal interference nearby, stay away from the interference source or modify the frequency and channel to
avoid interference;

Unsatisfactory power supply may also cause garbled codes. Ensure the reliability of the power supply;

Poor or too long extension cables and feeders can also cause high bit error rates.
11. Soldering Operation 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℃