Lenovo ThinkPad X220 Tablet User Manual Page 12

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groundingand,inparticular,speciesthatthecablegroundshallbeconnectedto
thegroundingsystemofthebuilding,ascloseaspossibletothepointofcable
entryaspractical.
Exampleofantennagrounding
Propergroundingforthecable
1
Groundclamp
5
Powerservicegrounding
electrodesystem(NECArticle
250,PartH)
2
Antennalead-inwire
6
Groundclamps
3
Antennadischargeunit(NEC
Section810-20)
7
Electronicserviceequipment
4
Groundingconductors(NEC
Section810-21)
Figure1.Propergroundingforthecable
xSafetyandWarrantyGuide
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