Basic Circuit Diagram; Hardware Design And Circuit Schematic Diagram; Faq; Communication Range Is Too Short - Ebyte E49-400M20S4 Manual

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5 Basic Circuit Diagram

5.1 Hardware design and circuit schematic diagram

6 FAQ

6.1 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;

Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the

distance);
The power supply low voltage under room temperature is lower than 2.5V, the lower the voltage, the lower the

transmitting power;
Due to antenna quality or poor matching between antenna and module.


6.2 Module is easy to damage

Please check the power supply source, ensure it is within the recommended supply voltage, voltage higher than the

Max will damage the module;
Please check the stability of power source, the voltage cannot fluctuate too much;

Please make sure antistatic measure are taken when insalling and using high frequency devices have electrostatic

susceptibility;
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E49-400M20S4 User Manual
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