Mitsumi electronic NZ2GF-ETB ユーザーズマニュアル

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6.4.3
Grounding
Observe the following:
 • Provide independent grounding when possible. Ground the FG and LG terminals to the protective ground 
conductor. (Grounding resistance: 100
 or less)
 • If independent grounding is not possible, employ shared grounding, making all of the ground wires to the 
same length.
 • Use the thickest possible ground wires (up to 2mm
2
). Also, bring the grounding point close to the Ethernet 
adapter module as much as possible so that the ground wire can be shortened.
(3) Common grounding        Not allowed
Grounding
Ethernet 
adapter module 
Ethernet 
adapter module 
Ethernet 
adapter module 
Another 
device
Another 
device
Another 
device
Grounding
(1) Independent grounding        Best
(2) Shared grounding        Good