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Honeywell ESD

Posted July 25, 2016

Honeywell Granit 1910i ScannerYou often hear manufacturers reference ESD when discussing scanners.  In fact, on the Honeywell Granit datasheet you’ll see under the “Environmental” section on the back:  ESD.  ±20Kv air discharge, ±8KV contact discharge

What does it mean and why is it important?

  • ESD – electrostatic discharge – is the sudden flow of electricity between two objects resulting from two conditions:
    • Air Discharge.  A high electrostatic field between two objects when they are in close proximity.
    • Contact Discharge.  Direct contact transfer of electricity between two objects at different potentials.  This is similar to the above except you are injecting the shock directly into the computer. A typical example of this would be 20KV Air Discharge into a scanner vehicle mount.  The mount in turn passes an 8KV shock to the scanner.
  • Kv is a kilovolt – or 1,000 Volts. And a volt is…um…a unit of measurement to define voltage.  Think of voltage, using a plumbing analogy, as water pressure.

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