Datalogic GRYPHON D Series Snelle referentie - Pagina 17
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Glossary
1. ESD: Electrostatic Discharge. Fast charge transfer
between objects with a different electrostatic potential caused
either by direct contact or by an electrostatic field.
2. ESDS: Electrostatic discharge sensitive devices. Devices
that can be damaged by ElectroStatic discharge.
3. EPA: ESD - protected area. Area where the ESDS can be
managed safely. The ESD events are substantially avoided.
4. Surface Resistence. Ratio between the D.C. voltage applied
between two electrodes on a test surface and the current
among them.
5. Surface Resistivity. It is equivalent to the Surface
Resistance measured on a rectangular surface, with the
electrodes on two opposite sides.
6. Conductive Electrostatic Material. Material having a
surface resistivity between 10
7. Dissipative Electrostatic Material. Material having a
surface resistivity between 10
8. Insulant Electrostatic Material. Material having a surface
resistivity over 10
9. Hard Grounding. It is a galvanic Earth connection through a
highly conductive path that could lead to excessively high or
rapid charging/discharging phenomena. The only remedy is to
increase the resistance of the overall grounding path.
3
6
12
Ω.
6
Ω and 10
Ω.
12
Ω and 10
Ω.