Cisco Cisco OptoStar II Driver Amplifier Installation Guide

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Important Safety Instructions, Continued 
AC Power 
Important: If this equipment is a Class I equipment, it must be grounded. 
If this equipment plugs into an outlet, the outlet must be near this equipment, and 
must be easily accessible.   
Connect this equipment only to the power sources that are identified on the 
equipment-rating label normally located close to the power inlet connector(s). 
This equipment may have two power sources. Be sure to disconnect all power 
sources before working on this equipment.   
If this equipment does not have a main power switch, the power cord connector 
serves as the disconnect device.   
Always pull on the plug or the connector to disconnect a cable. Never pull on the 
cable itself.   
Unplug this equipment when unused for long periods of time.   
Connection to -48 V DC/-60 V DC Power Sources 
If this equipment is DC-powered, refer to the specific installation instructions in this 
manual or in companion manuals in this series for information on connecting this 
equipment to nominal -48 V DC/-60 V DC power sources. 
Circuit Overload 
Know the effects of circuit overloading before connecting this equipment to the 
power supply. 
Consider the connection of this equipment to the supply circuit and the effect 
that overloading of circuits might have on overcurrent protection and supply 
wiring. Refer to the information on the equipment-rating label when addressing 
this concern.   
General Servicing Precautions 
Avoid electric shock! Opening or removing the equipment cover may expose 
you to dangerous voltages. Refer all servicing to qualified service personnel 
These servicing precautions are for the guidance of qualified service personnel 
only. To reduce the risk of electric shock, do not perform any servicing other 
than contained in the operating instructions unless you are qualified to do so. 
Refer all servicing to qualified service personnel. 
Continued on next page 
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