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Grounding requirements for personnel – Grass Valley K2 Edge Installation v.4.0.2 User Manual

Page 15

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K2 Edge Installation and Service Manual - document version: 4.0.2 – Page 15

Equipment
Any equipment commonly found in an ESD work area, such as solder guns, heat guns, blowers, etc.,

should be grounded.

Materials
Plastic work holders, foam, plastic tote boxes, pens, packaging containers and other items commonly

found at workstations can generate static electricity.

Grounding Requirements for Personnel

The information in this section is provided to assist you in selecting a grounding method. This

information is taken from ANSI/ESD S20.20-2007 (Revision of ANSI/ESD S20.20-1999).

Product Qualification
Personnel Grounding

Technical Requirement

Test Method

Required Limits

Wrist Strap System*

ANSI/ESD S1.1 (Section 5.11)

< 3.5 x 107 ohm

Flooring / Footwear System –

Method 1

ANSI/ESD STM97.1

< 3.5 x 107 ohm

Flooring / Footwear System –

Method 2 (both required)

ANSI/ESD STM97.
1ANSI/ESD STM97.2

< 109 ohm

ANSI/ESD STM97.2

< 100 V


Product qualification is normally conducted during the initial selection of ESD control products and

materials. Any of the following methods can be used: product specification review, independent

laboratory evaluation, or internal laboratory evaluation.


Compliance Verification
Personnel Grounding

Technical Requirement

Test Method

Required Limits

Wrist Strap System*

ESD TR53 Wrist Strap Section

< 3.5 x 107 ohm

Flooring / Footwear System –

Method 1

ESD TR53 Flooring Section and
ESD TR53 Footwear Section

< 3.5 x 107 ohm

Flooring / Footwear System –

Method 2 (both required)

ESD TR53 Flooring Section and
ESD TR53 Footwear Section

< 1.0 x 109 ohm


* For situations where an ESD garment is used as part of the wrist strap grounding path, the total

system resistance, including the person, garment, and grounding cord, must be less than 3.5 x
107ohm.