D-4 ESD
HN4000 Hardware Installation Guide 920550-5020 Rev 14
D.8 ESD
D.9 Symbols
TableD‐1describes therelatedsymbolsusedinthisdocumentorontheequipment.
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Static Electricity can damage or decrease the reliability of electrical and optical equipment. While
unpacking and handling electrical and optical equipment, wear a grounding wrist strap to dis-
charge the static buildup. The grounding wrist strap is designed to prevent equipment damage
caused by static electricity. Before unpacking and installing equipment or making system intercon-
nections, connect the grounding wrist strap.
Table D-1 Symbols
Symbol Description
Caution‐failuretofollowdocumentedprocedurescouldresultindamagedor
inoperativeequipment.
Warning‐riskofelectricshockispresent.
Observeprecautionsforhandlingelectrostaticdischarge‐sensitivedevices.
Laserwarning.NeverlookatatransmitLED/laserthroughamagnifyingdevicewhileit
ispowe redonorlookdirectlyatfiberport
orfibercableendswhentheyarepoweredon.
Directcurrent.
ProtectiveEarthgroundterminal.