Installation manual

Simrad PI54
16
851-165187 / Rev.A
ESD precautions
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 i t 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.
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.
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 50kΩ
and2MΩ, and is connected directly to a reliable earth point
via its earthing cord.
• The service personnel involved must wear a wrist-band i n
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.
Caution: If, for any reason, it is necessary to move the circuit
board or components from the conductive service mat,
they must be placed in an approved anti-static
transportation container (e.g. static shielding bag)
before transportation.
• During installation and servicing, all electrical equipment
(soldering irons, test equipment etc.) must be earthed.