Communication Range Is Too Short; Module Is Easy To Damage; High Bit Error Rate - Ebyte E76-433M20S User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd.
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.

Sea water 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.

The signal will be affected when the antenna is near metal object or put in a metal case.

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

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.


5.3 High bit error rate

There are co-channel signal interference nearby, keep away from interference sources or modify frequency, channel

to avoid interference.
Unsatisfactory power supply may also cause garbled characters, and ensure the reliability of the power supply.

If the extension cable or feeder is of poor quality or too long, the bit error rate will be high.

Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
E76 pin J-LINK interface
VCC VCC
PF0 SWCLK
PF1 SWDIO
GND GND
E76-433M20S User Manual
6