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Electromagnetic Compatibility
This product has been assessed operating in
product, however, final installation & configuration can vary significantly, and so the following guidelines are
offered to help ensure that compatibility is maintained.
•
All components added to a system should either carry appropriate equivalent levels of compliance, or
be tested for compliance as part of the final system, and should be installed in accordance with
supplier recommendations.
•
The external enclosure should be securely fastened (with standard lids and covers in place) to ensure
good metal-to-metal contact around the intern
•
Any metal back plate must be securely screwed to the chassis of the computer to ensure good metal
to-metal (i.e. earth) contact.
•
Any metal, screened, connector bodies
•
The external cabling to boards causes most EMC problems. It is
cabling to the board be totally screened, and that the screen of the cable connects to the metal end
bracket of the board or the enclosure and hence to earth.
screen are used in preference to those with a foil screen and drain wire.
connector shells that connect around the full circumference of the cable screen: they are far superior
to those that earth the screen by a si
•
If used, a keyboard or mouse will play an important part in the compatibility of the processor card
since they are ports into the board. Similarly, they will affect the compatibility of the complete
system. Fully compatible peripherals mus
degraded. They may radiate or behave as if keys/buttons are pressed when subject to interference.
Under these circumstances it may be beneficial to add a ferrite clamp on the leads as close as possible
to the connector. A suitable type is the Chomerics type H8FE
•
USB cables should be high quality screened types.
•
Ensure that the screens of any external cables are bonded to a good RF earth at the remote end of
the cable.
Failure to observe these recommendations may invalidate the EMC complia
Beta Touch Computer
____________________________________________________________________________________________________________________________________________
Electromagnetic Compatibility
This product has been assessed operating in representative, standard configurations. As with any
ion & configuration can vary significantly, and so the following guidelines are
compatibility is maintained.
All components added to a system should either carry appropriate equivalent levels of compliance, or
compliance as part of the final system, and should be installed in accordance with
The external enclosure should be securely fastened (with standard lids and covers in place) to ensure
metal contact around the internal electronics
Any metal back plate must be securely screwed to the chassis of the computer to ensure good metal
onnector bodies should be securely connected to the enclosure.
rds causes most EMC problems. It is recommended that any
totally screened, and that the screen of the cable connects to the metal end
bracket of the board or the enclosure and hence to earth. Round, screened cables with a b
screen are used in preference to those with a foil screen and drain wire. Wherever possible, u
connector shells that connect around the full circumference of the cable screen: they are far superior
to those that earth the screen by a simple “pig-tail”.
mouse will play an important part in the compatibility of the processor card
since they are ports into the board. Similarly, they will affect the compatibility of the complete
system. Fully compatible peripherals must be used otherwise the complete system could be
degraded. They may radiate or behave as if keys/buttons are pressed when subject to interference.
Under these circumstances it may be beneficial to add a ferrite clamp on the leads as close as possible
e connector. A suitable type is the Chomerics type H8FE-1004-AS.
USB cables should be high quality screened types.
Ensure that the screens of any external cables are bonded to a good RF earth at the remote end of
recommendations may invalidate the EMC compliance
Beta Touch Computer
_____________________________________
Page | 30
As with any computer
ion & configuration can vary significantly, and so the following guidelines are
All components added to a system should either carry appropriate equivalent levels of compliance, or
compliance as part of the final system, and should be installed in accordance with
The external enclosure should be securely fastened (with standard lids and covers in place) to ensure
Any metal back plate must be securely screwed to the chassis of the computer to ensure good metal-
be securely connected to the enclosure.
that any external
totally screened, and that the screen of the cable connects to the metal end
ound, screened cables with a braided wire
Wherever possible, use metal
connector shells that connect around the full circumference of the cable screen: they are far superior
mouse will play an important part in the compatibility of the processor card
since they are ports into the board. Similarly, they will affect the compatibility of the complete
t be used otherwise the complete system could be
degraded. They may radiate or behave as if keys/buttons are pressed when subject to interference.
Under these circumstances it may be beneficial to add a ferrite clamp on the leads as close as possible
Ensure that the screens of any external cables are bonded to a good RF earth at the remote end of
