www.tuv.com Report No.
CNE CS231-2 RFID Module User’s Manual Version 1.0 Warning: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
The CNE CS231-2 RFID module is an embedded RFID module for application inside all kinds of systems, such as handheld devices, security entrance devices, smart furniture, etc. Figure 1 CS231-2 RFID Module Setup Instructions: 1. 2. Connect the RFID module to antenna via the RF terminal. Connect the RFID module to 3.3 to 4.2 volt DC supply. 3. 4. 5. Connect the RFID module via USB or UART port to the host processor board.
Software: 1. 2. 3. Use the Standard RFID Library and API calls via USB or UART. Developer needs to compile the library again for the specific host processor platform. Use the Simplified UART command set, either ASCII based version or Binary based version. Developer does not have to recompile library, just send out appropriate UART based commands and receive data back via UART terminals. Please refer to CS231-2 Programmer’s Manual for the above 2 groups of APIs and library.
Environmental Concerns: The environmental condition of the module must be evaluated to see if the heat dissipation is enough to allow the RFID module to operate according to the product specification requirements. If the product specification requirements mandate the duty cycle of operation is such that the RFID module generates a lot of heat, then effective heat dissipation means must be provided. The heat sink now on the module contains mounting holes for fan.
Federal Communication Commissions Compliance This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
• Mobile Devices: a mobile device is defined as a transmitting device designed to be used in other than fixed locations and to be generally used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter's radiating structures and the body of the user or nearby persons.
• General Population/Uncontrolled Exposure: The general population / uncontrolled exposure limits are applicable to situations in which the general public may be exposed or in which persons who are exposed as a consequence of their employment may not be made fully aware of the potential for exposure or cannot exercise control over their exposure.
Radio Frequency Radiation Exposure Evaluation: The highest RF output power of the EUT was measured at 27.0dBm at 902.75MHz and 927.25MHz. According to §1.1310 of the FCC rules, the power density limit for General Population/Uncontrolled Exposure at 902.75MHz (worst case) is f(MHz)/1500 = 0.6018mW/cm2. The maximum permissible exposure (MPE) is calculated to show the required separation distance that must be maintained during installation to maintain compliance with the power density limit.
