Specifications

Ra-01SC Specification V1.1

6.3

Antenna installation

(1) Ra-01SC has one spring antenna, the antenna can not be replaced by other authorized

antennas；

(2) In order to meet the best antenna effect，the location of the antenna assembly should be

far away from the metal parts；

(3) The antenna installation structure has a great influence on the performance of the

module. Make sure that the antenna is exposed, preferably vertically upward;

(4) The antenna must not be installed inside the metal shell, which will greatly reduce the

transmission distance.

6.4

Power Supply

（1） Recommended voltage 3.3 V, Peak:Current over 200mA .

（2） It is recommended to use the LDO power supply；If DC-DC is used, the ripple is

controlled within 30 mV.；

（3） DC-DC power supply circuit is recommended to reserve the position of the dynamic

response capacitor, and the output ripple can be optimized when the load change is large.；

（4）3.3V power jack advise to add ESD components.；

（5） When designing the power supply circuit for the module, it is recommended to reserve

more than 30% of the power supply current, which is conducive to the long-term stable

operation of the whole machine；

（6） Please pay attention to the correct connection of the positive and negative poles of the

power supply. Reverse connection may cause permanent damage to the module.

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