User`s manual

4 www.rabbit.com RabbitFLEX BL300F Introduction
1.4.1 Immunity
The RabbitFlex series of single-board computers meets the following EN55024/1998 immunity standards.
• EN61000-4-3 (Radiated Immunity)
• EN61000-4-4 (EFT)
• EN61000-4-6 (Conducted Immunity)
Additional shielding or filtering may be required for a heavy industrial environment.
1.4.2 Emissions
The RabbitFlex series of single-board computers meets the following emission standards.
• EN55022:1998 Class A
• FCC Part 15 Class A
Your results may vary, depending on your application, so additional shielding or filtering may be needed to
maintain the Class A emission qualification.
1.4.3 Design Requirements for CE Compliance
Note the following requirements for incorporating the RabbitFlex series of single-board computers into
your application to comply with CE requirements.
1.4.3.1 General Design Requirements
• The power supply provided with the Tool Kit is for development purposes only. It is the customer’s
responsibility to provide a CE-compliant power supply for the end-product application.
• The LCD/keypad module was tested with the RabbitFlex, but no ESD testing was done. It is the
customer’s responsiblity to provide a properly designed enclosure for the LCD/keypad interface to
meet ESD requirements.
• When connecting a RabbitFlex single-board computer to outdoor cables, the customer is responsi-
ble for providing CE-approved surge/lightning protection.
• Rabbit recommends placing digital I/O or analog cables that are 3 m or longer in a metal conduit to
assist in maintaining CE compliance and to conform to good cable design practices.
• When installing or servicing the RabbitFlex board, it is the responsibility of the end-user to use
proper ESD precautions to prevent ESD damage to the RabbitFlex board.
1.4.3.2 Safety Design Requirements
• All inputs and outputs to and from the RabbitFlex series of single-board computers must not be
connected to voltages exceeding SELV levels (42.4 V AC peak, or 60 V DC).
• The lithium backup battery circuit on the RabbitFlex single-board computer has been designed to
protect the battery from hazardous conditions such as reverse charging and excessive current flows.
Do not disable the safety features of the design.