Chengdu Ebyte Electronic Technology Co., Ltd.
E03-W05A User Manual
Copyright ©2012–2020
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Chengdu Ebyte Electronic Technology Co., Ltd
26
Chapter 7 Frequently Asked Questions
7.1 Transmission distance is not ideal
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 results near the ground are poor;
Sea water has a strong ability to absorb radio waves, so the seaside test results are poor;
If there is a metal object near the antenna or placed in a metal shell, the signal attenuation will be very serious;
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.
7.2 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, 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.
7.3 Precautions
7.3.1 The relationship between AP&STA&Server&Client
In the above two network access examples in Sections 6.2 and 6.3, it is not only in AP mode that TCP Server can be
established. Similarly, it is not only when the module is in STA mode that TCP Client can be established. AP and
STA are just modules that access the network. One of the working modes of the module, and TCP Server, TCP
