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7 grounding equipment and methods, 7 grounding equipment and methods –6 – Compaq 110 User Manual

Page 67

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4–6

Maintenance and Service Guide

Removal and Replacement Preliminaries

4.7 Grounding Equipment and Methods

Grounding equipment must include either a wrist strap or a foot
strap at a grounded workstation.

When seated, wear a wrist strap connected to a grounded
system. Wrist straps are flexible straps with a minimum of
one megohm ±10% resistance in the ground cords. To
provide proper ground, wear a strap snug against the skin at
all times. On grounded mats with banana-plug connectors,
connect a wrist strap with alligator clips.

When standing, use foot straps and a grounded floor mat.
Foot straps (heel, toe, or boot straps) can be used at standing
workstations and are compatible with most types of shoes or
boots. On conductive floors or dissipative floor mats, use
them on both feet with a minimum of one-megohm resistance
between the operator and ground. To be effective, the
conductive strips must be worn in contact with the skin.

Other grounding equipment recommended for use in
preventing electrostatic damage includes:

Antistatic tape

Antistatic smocks, aprons, or sleeve protectors

Conductive bins and other assembly or soldering aids

Non-conductive foam

Conductive tabletop workstations with ground cord of
one-megohm resistance

Static-dissipative table or floor mats with hard tie to
ground

Field service kits

Static awareness labels

Material-handling packages

238850-003.book Page 6 Friday, December 21, 2001 2:53 PM