Faq; Communication Range Is Too Short; Module Is Easy To Damage; Ber(Bit Error Rate) Is High - Ebyte E07-900M10S Manual

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6 FAQ

6.1 Communication range is too short

The communication distance will be affected when obstacle exists;
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Data lose rate will be affected by temperature, humidity and co-channel interference;
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The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground;
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Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea;
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The signal will be seriously affected when the antenna is near metal object or put in a metal case;
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Power register was set incorrectly or air data rate is set as too high (the higher the air data rate, the shorter the
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distance);
The power supply low voltage under room temperature is lower than our recommendation, the lower the voltage,
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the lower the transmitting power;
Due to antenna quality or poor matching between antenna and module.
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6.2 Module is easy to damage

Please check the power supply source, ensure it is 1.8V~3.6V, voltage higher than 3.6V will damage the module;
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Please check the stability of power source, the voltage cannot fluctuate too much;
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Please make sure anti-static operation when installing and using, high frequency devices have electrostatic

susceptibility;
Please ensure the humidity is within limited range, some parts are sensitive to humidity;
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Please avoid using modules under too high or too low temperature.
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6.3 BER(Bit Error Rate) is high

There are co-channel signal interference nearby, please be away from interference sources or modify
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frequency and channel to avoid interference;
The clock waveform on SPI is not standard, check whether there is interference on the SPI line, and the SPI bus line
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should not be too long;
Poor power supply may cause messy code. Make sure that the power supply is reliable;
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The extension line and feeder quality are poor or too long, so the bit error rate is high.
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7 Production guidance

This product is a SMD module. When soldering the module, the soldering personnel must work in accordance with
the anti-static operation specification;
This product is an electrostatic sensitive product. If the module is not welded according to the specification, the
module may be permanently damaged.
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E07-900M10S User Manual
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