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Ford VMM Hardware Manual page 9

Ford motor vehicle measurement module hardware manual
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A defective electrical earth connection to any equipment may cause an electric shock hazard. This
hazard may pass through the signal cabling and to any other equipment interconnected. It is
recommended that electrical wiring is checked at frequent intervals and whenever alterations are
made.
If signal cables are added to or removed from this equipment, switch off the electrical power supply
to this and other connected equipment.
Pollution Degree 2 – Normally only non-conductive pollution occurs. Occasionally a temporary
conductivity caused by condensation must be expected.
Installation Category 2 – Local level, appliances, portable equipment etc. with smaller transient
over-voltages than Installation Category 3 (Over-voltage Category).
The measurements section of the VMM is designed for use in Installation Category 1 – Signal level,
special equipment or parts of equipment, telecommunication, electronic etc., with smaller transient
over-voltages than Installation Category 2.
DO keep the VMM away from devices that generate radio interference.
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WARNING - Do not alter this equipment's cabling during
lightning activity if there is any cabling connecting from the
equipment to the outside of the building in which this
equipment is installed ie through a pc connector.
CAUTION – Do ensure the VMM is not subjected to extreme
heat or prolonged exposure to direct sunlight that may
cause heating of the VMM.
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