Rabbit 2000 Getting Started Manual
Also see for 2000: Getting started manualReference manualUser manualGetting startedDesigners handbook
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Getting Started Manual 5digital I/O cables. Your results may vary, depending on your application, so additionalshielding or filtering may be needed to maintain the Class B emission qualification.NOTE: If no ferrite absorbers are fitted, the Jackrabbit boards will still meetEN55022:1998 Class A requirements as long as the spectrum spreader is turned on.The spectrum spreader is on by default for the Jackrabbit model BL1810 included with theRabbit 2000 Development Kit.1.4.1 Spectrum SpreaderJackrabbit boards that carry the CE mark have a Rabbit 2000 microprocessor that featuresa spectrum spreader, which helps to mitigate EMI problems. By default, the spectrumspreader is on automatically for Jackrabbit BL1810 boards that carry the CE mark whenused with Dynamic C 7.32 or later versions so as to maintain CE compliance, but the spec-trum spreader may also be turned off or set to a stronger setting. The means for doing so isthrough a simple change to the following BIOS line.#define ENABLE_SPREADER 1 // Set to 0 to disable spectrum spreader// 1 to enable normal spreading, or// 2 to enable strong spreading.NOTE: The strong spectrum-spreading setting is not needed for any Jackrabbit board.There is no spectrum spreader functionality for Jackrabbit boards that do not carry the CEmark or when using any Jackrabbit with a version of Dynamic C prior to 7.30.1.4.2 Design GuidelinesNote the following requirements for incorporating the Jackrabbit series of single-boardcomputers into your application to comply with CE requirements.General• The power supply provided with the Development Kit is for development purposesonly. It is the customer’s responsibility to provide a CE-compliant power supply for theend-product application.• When connecting the Jackrabbit single-board computer to outdoor cables, the customeris responsible for providing CE-approved surge/lightning protection.• Rabbit Semiconductor recommends placing digital I/O or analog cables that are 3 m orlonger in a metal conduit to assist in maintaining CE compliance and to conform togood cable design practices. Rabbit Semiconductor also recommends using properlyshielded I/O cables in noisy electromagnetic environments.• When installing or servicing the Jackrabbit, it is the responsibility of the end-user to useproper ESD precautions to prevent ESD damage to the Jackrabbit. |
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