參數(shù)資料
型號(hào): 02-ATB-1200
英文描述: RS232 INTERFACE PCB FOR
中文描述: RS232接口電路板的
文件頁數(shù): 14/15頁
文件大?。?/td> 1095K
代理商: 02-ATB-1200
ATB1200 User Guide Page 8 of 15
4
EMC CONSIDERATIONS
4.1
EMC DISCLAIMER (DIRECTIVE 89/336/EC)
The ATB1200 is designed to be used as a component in another finished good, and is not intended to
be placed on the market or brought into service independently. The system integrator using this item
must assume responsibility for Electro-Magnetic Compatibility (EMC) between this item and its
environment, both for emissions and immunity/susceptibility.
Particular attention should be paid to the wiring connections between the ATB1200 and the power
supply, data source and other parts of the user's system in case special shielding and/or cable layout
is required to meet applicable EMC criteria.
To assist OEM customers, Able Systems has carried out traceable pre-compliance EMC tests on our
popular Ap1200 printer, which uses a variant of the ATB1200 PCB and the ELM205-ST mechanism.
The results of these tests indicate that the printer mechanism and controller electronics are unlikely to
prevent EMC compliance of the customer's equipment, as follows:
Since the ATB1200 is DC powered and will only be electrically connected within an OEM
equipment, conducted emissions and immunity are not relevant, and we consider that the
ATB1200 falls outside the scope of the Regulations in these regards.
When fitted in an earthed steel case and connected to an internal data source and power
supply, the ATB1200 may be expected to comply with the requirements of the EMC Directive
in respect of radiated emissions and immunity;
See “Section 4.2 - Earthing Arrangements for ESD” below for special information about ESD.
4.2
EARTHING ARRANGEMENTS FOR ESD
The standard ELM205-ST has no provision for an earth connection to the metal parts of the printer
mechanism. In order to satisfy EMC criteria when using this mechanism, the system integrator must
ensure that the end user cannot discharge themselves to any of the metal parts of the mechanism.
This could be achieved, for example, by preventing the user from gaining access to those parts, or by
ensuring the user is discharged to earth before gaining access to them.
A variant of the ELM205-ST mechanism is available (order number: ELM205-ST-VRF), in which the
metalwork of the printer is internally connected to the system power ground. In this case, the system
integrator must ensure that sufficient power supply voltage filtering is in place to cope with possible
ESD strikes.
Please refer to Able Systems if more information is required on this.
4.3
EMC ADVICE
While system EMC compliance remains the responsibility of the system designer, Able Systems has
many years experience of implementing mini-printer solutions. In particular, it is recommended that
screened cables are used, that all cables are kept as short and low-impedance as possible, and that
all user accessible parts are adequately earthed.
Further advice is available from Able Systems on request.
相關(guān)PDF資料
PDF描述
05266.123.204 6 mm2, COPPER ALLOY, WIRE TERMINAL
05266.123.211 6 mm2, COPPER ALLOY, WIRE TERMINAL
05267.123.211 1 mm2, BRASS, TIN FINISH, WIRE TERMINAL
05363.123.242 1 mm2, BRASS, SILVER FINISH, WIRE TERMINAL
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