communications.However, there is no guaranteethat interference will not occur in a
particularinstallation.
Ifthis equipment does cause harmful interference to radio or televisionreception, which
canbe determined by turning the equipment off and on, the user is encouraged to try
andcorrect the interference by one or more of the followingmeasures:
•Reorientor relocate the receiving antenna.
•Increasethe separation between the equipment and the receiver.
•Connectthe equipment into an outlet on a circuit different from that to which the
receiveris connected.
•Consultthe dealer or an experienced radio or TV technician for help.

Non-RegulatoryEnvironmental Standards

NEBScompliance—These EX Series switch models areNetwork Equipment Building
System(NEBS) compliant:
•EX2200-24Tand EX2200-48T
•EX3200-24T,EX3200-48T, EX4200-24F,EX4200-24T, and EX4200-48T
•AllEX8200 models
Thoseswitch models meet the following NEBS compliance standards:
•SR-3580NEBS Criteria Levels (Level 3 Compliance)
•GR-1089-CORE:EMC and ElectricalSafety for Network TelecommunicationsEquipment
•GR-63-CORE:NEBS, Physical Protection
•Theequipment is suitable for installation as part of the Common Bonding Network
(CBN).
•Theequipment is suitable for installation in locations wherethe National Electrical
Code(NEC) applies.
•Thebattery return connection is to be treatedas an Isolated DC return (DC-I), as
definedin GR-1089-CORE.
Related
Documentation
AgencyApprovals for EX Series Switches on page151•
•ComplianceStatements for Acoustic Noise for EX SeriesSwitches on page 154
Compliance Statementsfor Acoustic Noise for EX Series Switches
Thistopic applies to hardware devices in the EX Series product family,which includes
switchesand the XRE200 External Routing Engine.
Maschinenlärminformations-Verordnung- 3. GPSGV,der höchste Schalldruckpegel
beträgt70 dB(A) oder weniger gemäss EN ISO 7779
Copyright© 2010, Juniper Networks, Inc.154
CompleteHardware Guide for EX2200 Ethernet Switches