Lierda Science & Technology Group Co. Ltd LSD1BTNBLE0000 사용자 설명서

follow the following principles in use:

1. It is recommended to use DC stabilized power supply for the module. Power supply ripple

coefficient shall be as small as possible. The module shall be grounded reliably. Please pay attention to the 

connection between positive and negative poles of the power supply. Reverse connection may cause 

permanent damage to the module;     

2. It is recommended to place the module at the open space of bottom plate edge and the antenna shall

face outwards; 

3. PCB board (double-sided board and multi-layer board) below the antenna in the module needs to be

cleaned and cannot be coated with copper, i.e. there shall be no grounding or signal trace for all layout 

layers below the antenna; 

4. It is best not to have metal devices near the antenna, otherwise the communication distance of

modules will be shortened to varying degrees in different environments.

Figure 4-2 Module PCB layout

The transparent transmission module is temporarily only used as a slave device to connect to piconet 

with master device. The existence of these interfaces not only greatly expand the connection mode of the 

module but also can enable users to dock with the modules and realize the network transmission of data;

URAT has a framing mechanism. The continuous transmission is one frame, but the number of bytes 

per frame must be less than 1500 bytes. The framing is related to the low power mode. In low power mode,