For CE marking, self-declaration is sufficient. For FCC and ARIB and WPC, the RF should be certified as part of the complete product. We have done pre-qualification so we know the module will meet the respective regulations. Attached is our Declaration of Conformity.
Last Update: August 8, 2017
January 25, 2017
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RC232 Q&A Related Knowledge Base Posts - [RC232] When the MAC layer has a packet to send, it will use a carrier-sense-multiple-access (CSMA) protocol to determine if another module is already transmitting. If another module is transmitting, the module will receive that data before attempting to transmit its data again. If, during this process, the UART receive buffer gets full, the CTS line will go high to prevent the host UART from over-running the receive buffer. The CSMA mechanism introduces a variable delay to the transmission channel. This delay is the sum of a random period and a weighted period that is dependent on the number of times that the module has tried and failed to acquire the channel. For applications that guarantee that only one module will be transmitting at any given time, the CSMA mechanism can be turned off to avoid this delay. [RC232] In your schematic i can see four connections on the RF Antenna port, A66 0 Ohm Resistor to a LGA Pad, L-Bead to Connector P6, Resistor to UFL Connector P3 ,Resistor to hole. Which of them are necessary for the antenna? [RC232] “Is it possible to setup a maximum length for received packages in RC232? I am aware of TX packages can be configured to have a maximum package length. By being able to configure the maximum length of received packages, I can have a smaller rx buffer size to store it in while processing it. “
