Chengdu Ebyte Electronic Technology Co.,Ltd.
E75-2G4M20S User Manual
Copyright ©2012–2018
Chengdu Ebyte Electronic Technology Co.,Ltd.
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4.2 Programming
With JN5168 as core ic, the module has similar drive method to JN5168, please refer to official chipset datasheet for
details.
Please visit the official website of NPX to get the downloading tool (FlashGUI.exe), connect via E15-USB-T2.
Notes: The diagram shows that the module needs to be connected to the USB to UART module to download the firmware.
5. FAQ
5.1 Communication range is too short
The communication distance will be affected when obstacle exists.
Data lose rate will be affected by temperature, humidity and co-channel interference.
The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.
Seawater has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.
The signal will be affected when the antenna is near metal object or put in a metal case.
Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the
distance).
When the power supply at room temperature is lower than the recommended low voltage, the lower the voltage is,
the lower the transmitting power is.
Due to antenna quality or poor matching between antenna and module.
5.2 Module is easy to damage
Please check the power supply and ensure it is within the recommended range. Voltage higher than the peak will
