Common Questions; Unsatisfactory Transmission Distance; Module Is Vulnerable To Damage; Ber Is Too High - Ebyte E22-230T22D User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd.

11 Common Questions

11.1 Unsatisfactory transmission distance

When there are linear communication barriers, the communication distance is attenuated accordingly.
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Temperature, humidity, co-channel interference, which can lead to increased communication packet loss.
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The ground absorbs and reflects radio waves and is less effective for testing close to the ground.
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Seawater has a very strong ability to absorb radio waves, so the seaside test is poor.
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metal objects near the antenna, or placed in a metal case, signal attenuation will be very serious.
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Wrong setting of the power register, too high setting of the air rate (the higher the air rate, the closer the distance).
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The low voltage of the power supply at room temperature is lower than the recommended value, and the lower the voltage the
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less power is generated.
Use antenna and module match poorly or antenna itself quality problems.
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11.2 Module is vulnerable to damage

Please check the power supply to ensure that it is between the recommended supply voltages, as exceeding the maximum will
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cause permanent damage to the module.
Please check the stability of the power supply, the voltage should not fluctuate significantly and frequently.
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Please ensure that the installation and use of the process of anti-static operation, high-frequency devices electrostatic sensitivity.
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Please ensure that the installation and use process humidity should not be too high, some components are humidity sensitive

devices.
It is not recommended to use at too high or too low temperature if there is no special need.
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11.3 BER is too high

If there is interference from the same frequency signal nearby, stay away from the interference source or modify the frequency or
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channel to avoid the interference.
Poor power supply may also cause garbled code, be sure to ensure the reliability of the power supply.
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Poor quality or too long extension cords and feeders can also cause high BER.
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12 Welding Work Instruction

12.1 Reflow Temperature

Profile Feature
Solder Paste
Preheat Temperature min (Tsmin)
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Curve characteristics
Solder Paste
Minimum preheating temperature
E22-230T22D User Manual
Sn-Pb Assembly Pb-Free Assembly
Sn63/Pb37 Sn96.5/Ag3/Cu0.5
100°C 150°C
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