Netgear MP115 用户手册

 

 

 

 

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2BDF0-020017 REV.00 

 

 

    • Turn off power and input signals before inserting or removing connectors, or test equipment. 

  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 1 megohm ± 10% resistance in the ground cords. To provide proper ground, wear a strap 

 

 

   

 

snugly 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 foot straps on both feet with a minimum of 1 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, and sleeve protectors 

    • Conductive bins and other assembly or soldering aids 

  • Nonconductive foam 

    • Conductive tabletop workstations with ground cords of 1 megohm resistance 

    • Static-dissipative tables or floor mats with hard ties to the ground 

    • Field service kits 

    • Static awareness labels 

  • Material-handling packages 

    • Nonconductive plastic bags, tubes, or boxes 

    • Metal tote boxes 

    • Electrostatic voltage levels and protective materials 

    Table below shows how humidity affects the electrostatic voltage levels generated by different activities: 

 

Walking across carpet 

35,000 V 

15,000 V 

7,500 V 

 

Walking across vinyl floor 

12,000 V 

5,000 V 

3,000 V 

Motions of bench worker 

6,000 V 

800 V 

400 V 

 

Removing DIPS from plastic tube 

2,000 V 

700 V 

400 V 

 

Removing DIPS from vinyl tray 

11,500 V 

4,000 V 

2,000 V 

 

Removing DIPS from Styrofoam

 

14,500 V 

5,000 V 

3,500 V 

 

Removing bubble pack from PWB

 

26,500 V 

20,000V 

7,000 V 

 

Packing PWBs in foam-lined box

 

21,000 V 

11,000 V 

5,000 V 

 

Note: A product can be degraded by as little as 700 volts 

 

    Table below lists the shielding protection provided by antistatic bags and floor mats. 

 

Antistatic plastic 

Bags 

1,500 V 

 

Carbon-loaded plastic 

Floor mats 

7,500 V 

 

Metallized laminate 

Floor mats 

5,000 V