D-Link DE-809TC Diagnostic LEDs on front panel of Mini Hubs Collision, Link/Rx for each UTP port

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10BASE-T Ethernet Mini Hubs User’s Guide

DE-809TC

Diagnostic LEDs on front panel of Mini Hubs

Collision.

Blinking: Packet collision is occurring. Packet collisions are not an abnormal situation. Collisions occur when two or more computers transmit packets on the network simultaneously, and a contention takes place on the network line. The computers should then back off, then retry transmission. This trial-and-error process is repeated until no collision takes place. Note: Excessive collisions may result when multiple hubs are cascaded through a thin coaxial segment and many stations are connected on the network.

Off: No packet collision.

Link/Rx (for each UTP port).

ON: Data link between (1) Mini Hub’s UTP port and (2) node’s or cascaded hub’s UTP port is successful.

OFF: (1) No data link or (2) cable disconnected. Check for bad cable or loose connectors. For cascaded hubs, check to see if UTP cable contains crossed-over wires. Also check for a “power good” condition at both ends of the connection. If you suspect that the hub port is damaged, contact your authorized dealer for service.

Blinking: Packet reception is occurring.

Installation

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Contents Fifth Edition Jan Limited Warranty Link Offices for Registration and Warranty Service Page Trademarks Class B for Model DE-809TC Vcci II Warning For Model DE-809TC Page Table of Contents Page 10BASE-T Ethernet Mini Hubs User’s Guide Port connectors on back panel of Mini HubsIntroduction 10BASE-T Ethernet Mini Hubs User’s Guide Page Page Page Mounting Hub on Wall InstallationInstallation Connecting AC Power Adapter Connecting UTP Segments 10BASE-T Ethernet Mini Hubs User’s Guide Connecting Thin Coaxial Segment Cascading Hubs Through Thin Coaxial Cable Cascading Hubs Through UTP Cable Installation Power Diagnostic LEDs & TroubleshootingLink/Rx for each UTP port Diagnostic LEDs on front panel of Mini Hubs CollisionUplink Partition for each UTP port10BASE2 Thin Coaxial Cable 10BASE-T Unshielded Twisted-Pair UTP CableAC power adapter model AD-071AB AC Power AdaptersAC power adapter model AD-071A AC power adapter model AD-071ADAC Power adapter model AD-071AJ DE-809TP Technical Specifications10BASE-T Ethernet Mini Hubs User’s Guide DE-809TC Cables, Connectors & AC Power Adapters Offices Registration Card