Simrad SP90 - REV E, Installation Manual

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Simrad SP90
22
851-164510 / Rev.E
•
Large units must be placed in a suitable cardboard box or
wooden crate. The unit must be protected against physical
damage by means of shock-absorbing insulation mats. The
box must be clearly marked with its contents, and must be
stored in a dry and dust-free area.
ESD precautions
Electrostatic Discharge (ESD)
Electro-Static Discharge (ESD) is the transfer of an electrostatic
charge between two bodies at different electrostatic potentials,
caused either by direct contact or induction by an electrostatic
field.
The passing of a charge through an electronic device can cause
localised overheating, and it can also “puncture” insulating
layers within the structure of the device. This may deposit a
conductive residue of the vaporised metal on the device, and
thus create a short circuit. This may result in a catastrophic
failure, or degraded performance of the device.
ESD Protection during transport and storage
Sensitive electronic equipment must be transported and stored in
protective packing bags, boxes and cabinets. The equipment
must NOT be transported or stored close to strong electrostatic,
electro-magnetic or radioactive fields.
Unpacking and servicing ESD sensitive equipment
If it is necessary to open and touch the electronics inside the
boxes/cabinets, then the following precautions MUST be taken:
•
The working area must be covered by an approved
conductive service mat that has a resistance of between 50k
Ω
and 2 M
Ω ,
and is connected directly to a reliable earth point
via its earthing cord.
•
The service personnel involved must wear a wrist-band in
direct contact with the skin, connected to the service mat.
•
Printed circuit boards and other components should be placed
on the conductive service mat during installation,
maintenance etc.