Chengdu Ebyte Electronic
Technology Co., Ltd
E83-2G4M03S User Manual
Copyright ©2012–2019, Chengdu Ebyte Electronic
Technology Co., Ltd
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the voltage, the lower the output power;
The antenna used is poorly matched with the module or the quality of the antenna itself is faulty.
6.2 Module is easily damaged
Please check the power supply to ensure that it is between the recommended power supply voltages. If it exceeds
the maximum value, the module will be permanently damaged;
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.。
6.3 Bit error rate too high
There is co-frequency signal interference nearby, stay away from the interference source or modify the
frequency and channel to avoid interference;
If the power supply is not ideal, it may also cause garbled characters. Be sure to ensure the reliability
of the power supply;
Poor quality or too long extension lines and feeder lines will also cause a high bit error rate.
Chapter 7 Welding Operation Guidance
7.1 Reflow temperature
When reflow soldering, all temperatures refer to the package center temperature, measured on the package
surface facing up (leads are placed down, i.e. the live insects are facing). If the temperature of the module
is not measured in the direction of live insects (the lead is placed upward, that is, the direction of dead insects)
for reflow soldering, the measured Tp temperature is within ±2°C of the Tp temperature measured in the direction
of the live insects, which still meets the requirements of Tc . Otherwise, the temperature curve should be adjusted
to meet the requirements of Tc. In order to accurately measure the actual peak temperature of the package body,
it is recommended to use the method recommended by JEP140 for furnace temperature testing.
In order to obtain a better welding effect, the production workshop recommends a constant temperature of
