Ebyte E31-433T17S User Manual

Contents

Ebyte E31-433T17S User Manual Manual pdf 17 page image

Chengdu Ebyte Electronic Technology Co.,Ltd. E31-433T17S User ManualCopyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 169 FAQ9.1 Transmission distance is not ideal When there is a linear communication obstacle, the communication distance will be correspondingly reduced; Temperature, humidity, and co-channel interference will lead to an increase in communication packet loss rate; The ground absorbs and reflects radio waves, so the test results close to the ground are poor. Seawater has a strong ability to absorb radio waves, so the seaside test results are poor. There are metal objects near the antenna, or placed in the metal shell, the signal attenuation will be very serious; Power register setting error, air data rate setting is too high (the higher the air data rate, th e closer the distance); The low voltage of the power supply is lower than the recommended value at room temperature, and the lower thevoltage, the smaller the power; The matching degree of antenna and module is poor, or the quality of the antenna itself.9.2 Module is easy to damage Please check the power supply to ensure that it’s within the recommended power supply, or the module will bepermanently damaged if it exceeds the maximu m value. Check the stability of the power supply and the voltage cannot be fluctuated frequently. Please ensure that the installation process is anti-static, and the high-frequency components are electrostaticallysensitive. Please ensure that the humidity during installation and use is not too high because some components are h umiditysensitive devices. If there is no special demand, it is not recommended to use it at too high or too low temperature.9.3 Bit error rate is too high There are co-channel signal interference nearby, away from interference sources or modify frequency and channelto avoid interference; The undesirable power supply may also cause messy code, and ensure the reliability of the power supply. The quality of extension line and feeder are poor or too long, which also cause high bit error rate;10 Welding operation guidance10.1 Reflow temperatureProfile Feature Curve feature Sn-Pb Assembly Pb-Free AssemblySolder Paste Solder paste Sn63/Pb37 Sn96.5/Ag3/Cu0.5Preheat Temperature min （Tsmin） M in. preheating temperature 100℃ 150℃Preheat temperature max (Tsmax) M ax. preheating temperature 150℃ 200℃Preheat Time (Tsmin to Tsmax)(ts) Preheating time 60-120 sec 60-120 sec