User Manual

Chengdu Ebyte Electronic Technology Co., Ltd. E200-470A17SUser Manual

affect the performance. It is recommended to keep them away from the module according to the strength of the

interference. If necessary, appropriate isolation and shielding can be done;

 Assume that there are traces with large electromagnetic interference (high-frequency digital, high-frequency analog,

power traces) around the module that will greatly affect the performance of the module. It is recommended to stay

away from the module according to the strength of the interference.If necessary, appropriate isolation and shielding

can be done;

 If the communication line uses 5V level, a 1k-5.1k resistor must be connected in series (not recommended, there is

still a risk of damage);

 The antenna installation structure has a great influence on the performance of the module. Make sure that the

antenna is exposed and it is best to be vertically upward;

 The mounting structure of antenna has a great influence on the performance of the module. It is necessary to ensure

that the antenna is exposed, preferably vertically upward. When the module is mounted inside the case, use a good

antenna extension cable to extend the antenna to the outside.

 The antenna must not be installed inside the metal case, which will cause the transmission distance to be greatly

weakened.

9. FAQ

9.1 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 recommended value, the lower the voltage, the

lower the transmitting power;

 Due to antenna quality or poor matching between antenna and module.

9.2 Module is easy to damage

 Please check the power supply source, ensure it is between the recommended supply voltage, voltage higher than

the maximum 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 installing and using, high frequency devices have electrostatic

susceptibility.

 Please ensure the humidity is within limited range, some parts are sensitive to humidity.

 Please avoid using modules under too high or too low temperature.