1.4 CE Compliance

Equipment is generally divided into two classes.

CLASS A

CLASS B

 

 

Digital equipment meant for light industrial use

Digital equipment meant for home use

 

 

Less restrictive emissions requirement:

More restrictive emissions requirement:

less than 40 dB µV/m at 10 m

30 dB µV/m at 10 m or 100 µV/m

(40 dB relative to 1 µV/m) or 300 µV/m

 

 

 

These limits apply over the range of 30–230 MHz. The limits are 7 dB higher for frequen- cies above 230 MHz. Although the test range goes to 1 GHz, the emissions from Rabbit- based systems at frequencies above 300 MHz are generally well below background noise levels.

The Jackrabbit single-board computer has been tested and was found to be in conformity with the following applicable immunity and emission standards. The BL1810 and BL1820 single-board models are also CE qualified as they are sub-versions of the Jackrabbit. Boards that are CE- compliant have the CE mark.

NOTE: Earlier versions of the Jackrabbit sold before 2002 that do not have the CE mark are not CE-complaint.

Immunity

The Jackrabbit 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.

Emissions

The Jackrabbit series of single-board computers meets the following emission standards with the Rabbit 2000 spectrum spreader turned on and set to the normal mode. The spectrum spreader is only available with Rev. C or higher of the Rabbit 2000 microprocessor. This microprocessor is used in all Jackrabbit series boards that carry the CE mark.

EN55022:1998 Class B

FCC Part 15 Class B

In order for the Jackrabbit boards to meet these EN55022:1998 Class B standards, you must add ferrite absorbers to the serial I/O cables used for RS-232 and RS-485 serial com- munication. Depending on your application, you may need to add ferrite absorbers to the

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Jackrabbit (BL1800)

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Digi BL1800 user manual CE Compliance, Immunity, Emissions