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CAUTION: N ever defeat t he gr ound c onductor or o perate t he e quipment i n the abs ence of a
suitably installed ground conductor. Contact the appropriate electrical inspection authority or an
electrician if you are uncertain that suitable grounding is available.
CAUTION: The system chassis must be positively grounded to the rack cabinet frame. Do not
attempt t o c onnect p ower t o t he s ystem unt il grounding c ables are c onnected. A q ualified
electrical inspector must inspect completed power and safety ground wiring. An energy hazard
will exist if the safety ground cable is omitted or disconnected.
Protecting Against Electrostatic Discharge
Static e lectricity can h arm de licate c omponents inside your s ystem. T o pr event s tatic dam age, discharge s tatic
electricity from your body before you touch any of the electronic components, such as the microprocessor. You can do
so by periodically touching an unpainted metal surface on the chassis.
You can also take the following steps to prevent damage from electrostatic discharge (ESD):
1. When unpac king a static-sensitive c omponent from i ts s hipping c arton, d o n ot r emove the c omponent f rom
the a ntistatic pac king m aterial until you ar e r eady t o i nstall the c omponent i n your s ystem. J ust bef ore
unwrapping the antistatic packaging, be sure to discharge static electricity from your body.
2. When transporting a sensitive component, first place it in an antistatic container or packaging.
3. Handle all sensitive components in a static-safe area. If possible, use antistatic floor pads, workbench pads
and an antistatic grounding strap.
DGS-3700 Series Layer 2 Gigabit Ethernet Switch Hardware Installation Guide
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