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| 型號(hào)： | 20-101-0358 |
| 廠商： | Rabbit Semiconductor |
| 文件頁(yè)數(shù)： | 89/94頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | COMPUTER SINGLE-BOARD BL1820 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | Jackrabbit |
| 模塊/板類型： | 單板計(jì)算機(jī)模塊 |
| 適用于相關(guān)產(chǎn)品： | BL1820 |
| 產(chǎn)品目錄頁(yè)面： | 618 (CN2011-ZH PDF) |
| 其它名稱： | 316-1081 |
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User’s Manual
5
digital I/O cables. Your results may vary, depending on your application, so additional
shielding or filtering may be needed to maintain the Class B emission qualification.
NOTE: If no ferrite absorbers are fitted, the Jackrabbit boards will still meet
EN55022:1998 Class A requirements as long as the spectrum spreader is turned on.
The spectrum spreader is on by default for Jackrabbit models BL1810 and BL1820. The
spectrum spreader is off by default for the Jackrabbit model BL1800, and must be turned
on with at least one wait state in order for the BL1800 model to be CE-compliant.
Section 3.8.3 provides further information about the spectrum spreader and its use, and
includes information on how to add a wait state.
1.4.1 Design Guidelines
Note the following requirements for incorporating the Jackrabbit series of single-board
computers into your application to comply with CE requirements.
General
The power supply provided with the Development Kit is for development purposes
only. It is the customer’s responsibility to provide a CE-compliant power supply for the
end-product application.
When connecting the Jackrabbit single-board computer to outdoor cables, the customer
is responsible 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. Rabbit also recommends using properly shielded I/O cables in noisy
electromagnetic environments.
When installing or servicing the Jackrabbit, it is the responsibility of the end-user to use
proper ESD precautions to prevent ESD damage to the Jackrabbit.
Safety
For personal safety, all inputs and outputs to and from the Jackrabbit series of single-
board computers must not be connected to voltages exceeding SELV levels (42.4 V AC
peak, or 60 V DC). Damage to the Rabbit 2000 microprocessor may result if voltages
outside the design range of 0 V to 5.5 V DC are applied directly to any of its digital
inputs.
The lithium backup battery circuit on the Jackrabbit 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.
1.4.2 Interfacing the Jackrabbit to Other Devices
Since the Jackrabbit series of single-board computers is designed to be connected to other
devices, good EMC practices should be followed to ensure compliance. CE compliance is
ultimately the responsibility of the integrator. Additional information, tips, and technical
assistance are available from your authorized Rabbit distributor, and are also available on
our Web site at www.rabbit.com.
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