MRV Communications EM316EDFA-BR 사용자 설명서

 

 

®

 

 
P/N 1294008-001 Rev D2 

 

vii 

 

 
 
 
 

 
Eliminate static electricity in the workplace by grounding operators, equipment, and devices 
including components and computer boards. Grounding prevents static charge buildup and 
electrostatic potential differences. Transporting products in special electrostatic shielding 
packages reduces electrical field damage potential. 
 

 
A safe and effective workplace provides the following items. 
 
•  ESD protective clothing/smocks: Street clothing must not come in contact with components 

or computer boards since the various materials in clothing can generate high static charges. 
ESD protective smocks, manufactured with conductive fibers, are recommended. 

•  Electrostatic shielding containers or totes: These containers (bags, boxes, etc.) are made of 

specially formulated materials, which protect sensitive devices during transport and storage. 

•  Antistatic or dissipative carriers: These provide ESD protection during component movement 

in the manufacturing process. It must be noted that antistatic materials alone will not provide 
complete protection. They must be used in conjunction with other methods such as totes or 
electrostatic shielding bags. 

•  Dissipative tablemat: The mat should provide a controlled discharge of static voltages and 

must be grounded. The surface resistance is designed such that sliding a computer board or 
component across its surface will not generate more than 100 V. 

•  Operator grounding: Keep a wrist strap or ESD cuff in constant contact with bare skin with a 

cable for attaching it to the ESD ground. The wrist strap drains off the static charge of the 
operator. The wrist strap cord has a current-limiting resistor for personnel safety. Wrist straps 
must be tested frequently to ensure that they are undamaged and operating correctly. Use 
special grounding heel straps or shoes when a wrist strap is impractical. These items are 
effective only when used in conjunction with a dissipative floor. 

•  ESD protective floor or mat: The mat must be grounded through a current-limiting resistor. 

The floor or mat dissipates the static charge of personnel approaching the workbench. 
Special conductive tile or floor treatment can be used when mats are not practical or cause a 
safety hazard. Chairs should be conductive or grounded to the floor with a drag chain.