Faq; Communication Range Is Too Short; Module Is Easy To Damage; Burn Firmware - Ebyte E73 2G4M04S1B User Manual

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 affected when the antenna is near metal object or put in a metal case.
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Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the distance).
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When the power supply at room temperature is lower than the recommended low voltage, the lower the voltage is, the lower the
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transmitting power is.
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 and ensure it is within the recommended range. Voltage higher than the peak will lead to a
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permanent damage to the module.
Please check the stability of power supply and ensure the voltage not to fluctuate too much.
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Please make sure anti-static measures are taken when installing and using, high frequency devices have electrostatic susceptibility.
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Please ensure the humidity is within limited range for 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. Burn firmware

Because of the bad compatibility of nRFgo Studio,We'd like to recommend users to choose
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programming.
About the issue that the old module can be programmed while the new one cannot, it's because we added the read-write
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protection in the production of new module. Users need to connect it correctly and then use the official nRFgo Studio to recover
(Jlink supports official nRFgo Studio ), as below:
Copyright ©2012–2017，Chengdu Ebyte Electronic Technology Co., Ltd.
J-LINK-V8 or above version for
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