Ebyte ESP32-WROVER-IE, User Manual

Page: 12 / 14

Chengdu Ebyte Electronic Technology Co.,Ltd.
ESP32-WROVER-IE User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
11
Ⅴ Common Questions
5.1 Unsatisfactory transmission distance
 When there is a straight line communication obstacle, the communication distance will be attenuated
accordingly;
 Temperature, humidity, and co-frequency interference will increase the communication packet loss rate;
 The ground absorbs and reflects radio waves, and the test effect is poor when it is close to the ground;

Sea water has a strong ability to absorb radio waves, so the seaside test effect is poor;
 If there is a metal object near the antenna or placed in a metal shell, the signal attenuation will be very
serious;
 The power register is set incorrectly, and the air speed is set too high (the higher the air speed, the closer
the distance);

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.
5.2 Module is easily damaged

Please check the power supply to ensure that it is within the recommended power supply voltage. If it exceeds
the maximum value, it will cause permanent damage to the module;
 Please check the stability of the power supply, and the voltage should not fluctuate greatly and frequently;

Please ensure that the installation and use process is anti-static, and high-frequency components are
electrostatically sensitive;

Please ensure that the humidity should not be too high during installation and use, 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.
5.3 Bit error rate is too high
 There is co-frequency signal interference nearby, stay away from the interference source or modify the
frequency and channel to avoid interference;
 The clock waveform on the UART is not standard, check whether there is interference on the UART line;

Unsatisfactory power supply may also cause garbled codes, so the reliability of the power supply must be
ensured.