SI4438 Wireless Module
User Manual of E30 Series Modules
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd.
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10. FAQ
10.1 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.
10.2 Module is easy to damage
Please check the power supply and ensure it is within the recommended range. Voltage higher than the peak will lead to a
permanent damage to the module.
Please check the stability of power supply and ensure the voltage not to fluctuate too much.
Please make sure anti-static measures are taken when installing and using, high frequency devices have electrostatic susceptibility.
Please ensure the humidity is within limited range for some parts are sensitive to humidity.
Please avoid using modules under too high or too low temperature.
11. Important Notes
All rights to interpret and modify this manual belong to Ebyte.
This manual will be updated based on the upgrade of firmware and hardware, please refer to the latest version.
Please refer to our website for new product information.
12. About Us
Technical support:
Documents and RF Setting download link:
www.cdebyte.com/en/
Tel：+86-28-61399028
Fax：028-64146160
Web：
www.cdebyte.com/en/
Address：Innovation Center D347, 4# XI-XIN Road, Chengdu, Sichuan, China
