Appendix A: Troubleshooting Diagnosing Hub Indicators This Fast Ethernet hub can be easily monitored through its comprehensive panel indicators. These indicators assist the network manager in identifying problems the hub may encounter. This section describes common problems you may encounter and possible solutions. Symptom: Power indicator does not light up. Cause: Defective power outlet, power cord, or internal power supply. Solution: Have your unit’s power supply or Power LED replaced.
CheetaHub Power-3012A User’s Guide System Diagnostics Power and Cooling Problems If the Power indicator does not turn on when the power cord is plugged in, you may have a problem with the power outlet, power cord, or internal power supply as explained in the previous section. However, if the unit powers off after running for a while, check for loose power connections, power losses or surges at the power outlet, and verify that the fan on back of the unit is unobstructed and running prior to shutdown.
CheetaHub Power-3012A User’s Guide (i.e., not the MDI port), make sure a crossover cable is used. Crossover cable should only be used if an MDI daisy-chain port is not available. Also note that the maximum cable length for a fiber optic connection is 2 kilometers (1.24 miles) for full duplex and 412 meters (0.25 miles) for half duplex. Transmission Mode When you use an optional switch module, verify that the attached device supports auto-negotiation if it must operate at full duplex.
Appendix B: Port and Cable Assignments RJ-45 Port Figure B-1 RJ-45 Connector (on the Hub Side) Pin 1 2 3 6 4,5,7,8 MDI-X Assignment (Station Port 1 ~ 12) Input Receive Data + Input Receive Data Output Transmit Data + Output Transmit Data Not Used MDI Assignment (Cascade Port 12) Output Transmit Data + Output Transmit Data Input Receive Data + Input Receive Data Not Used Table B-1 RJ-45 Pin Assignments Schematics for both straight and crossover twisted-pair cable are shown below.
Appendix C: Product Specifications Transmission Technique Topology Access Method Standards Conformance Media Supported Interfaces Hub-to-Workstation Distance Maximum Stack Size Dimensions Power Input Power Consumption Temperature Humidity Certification Emissions Immunity Safety Baseband Star or Tree CSMA/CD, 100Mbps IEEE 802.
Appendix D: Regulatory Standards Compliance EMI Certification FCC Class B Certification Accton Technology Corporation Model Numbers: EH3012A FCC ID: HED 3012AEH-TX This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation.
Fast EtherHub-12s User’s Guide Warnings 1. Wear an anti-static wrist strap or take other suitable measures to prevent electrostatic discharge whenever handling this equipment. 2. When connecting this device to a power outlet, connect the field ground lead on the tri-pole power plug to a valid earth ground line to prevent electrical hazards. You may find the following booklet prepared by the Federal Communications Commission helpful: The Interference Handbook This booklet is available from the U.S.
Fast EtherHub-12s User’s Guide CE Mark Declaration of Conformance (for EMI and Safety) This is to certify that this product complies with ISO/IEC Guide 22 and EN45014. It conforms to the following specifications: EMC: EN55022(1988)/CISPR-22(1985) EN60555-2(1987) EN60555-3 IEC1000-4-2(1995) IEC1000-4-3(1995) class B class B IEC1000-4-4(1995) 1kV - (power line), 0.
Fast EtherHub-12s User’s Guide Safety Compliance Underwriters Laboratories Inc. Important! Before making connections, make sure you have the correct Cord Set. Check it (read the label on the cable) against the following specification list.
Fast EtherHub-12s User’s Guide Wichtige Sicherheitshinweise 1. Bitte lesen Sie diese Hinweise sorgfältig durch. 2. Heben Sie diese Anleitung für den späteren Gebrauch auf. 3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie keine Flüssigoder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung. 4. Die Netzanschlu ßsteckdose soll nahe dem Gerät angebracht und leicht zugänglich sein. 5. Das Gerät ist vor Feuchtigkeit zu schützen. 6.
Appendix E: Product Support Services Product Registration Fill in the Owner Registration Card and mail it to Accton Technology Corporation. Accton will keep your record and inform you of any new Accton unit developments. Problem Report If problems occur during unit operation, please check the adapter configuration settings, cables, connectors, network terminators, hardware compatibility and other network components.
CheetaHub Power-3012A User’s Guide After repair, Accton will inform you of the date of delivery and the exact amount due. Please send the payment by T/T (Telegram Transfer), and Accton will send you the fixed component after receiving payment. With or without warranty, if the hardware is found to be free of defects, you will only be charged for testing and handling. Bulletin Board Service (BBS) • In countries other than the U.S., call 886-3-5770-654 to reach Accton Taiwan’s modem line.
CheetaHub Power-3012A User’s Guide Technical Support Your dealer or installer is the person who understands your network and Accton units. If neither is available to help you, Accton technical support engineers are available by FAX, mail or phone. • Send your technical questions by FAX to: International Headquarters: 886-3-5770-267 USA Headquarters: 408-452-8988 • To obtain software upgrades connect via ftp to ftp.accton.com.tw • Send your technical questions by email to support@accton.com.
CheetaHub Power-3012A User’s Guide Limited Warranty Accton warrants to the original owner that the product delivered in this package will be free from defects in material and workmanship for the lifetime of the product. For the warranty to apply, you must register your purchase by returning the registration card indicating the date of purchase and including proof of purchase. There will be a minimal charge to replace consumable components, such as fuses, power transformers, and mechanical cooling devices.
CheetaHub Power-3012A User’s Guide Return Process Before you may return any Accton product to Accton, you must request an RMA number by calling, FAXing or writing Accton’s Service Department at the address listed below. If you ship the product, you must assume the risk of damage or loss in transit. You must use the original container (or the equivalent) and pay the shipping charge.
CheetaHub Power-3012A User’s Guide Accton Offices Accton Technology Corporation International Headquarters, No. 1 Creation Rd. III, Science-based Industrial Park, Hsinchu 300, Taiwan, R.O.C.
CheetaHub Power-3012A User’s Guide Ordering Information • CheetaHub Power-3012A (EH3012A) • Uplink Modules 100BASE-TX (EM3051-TX) 100BASE-FX (EM3051-FX-SC) (EM3051-FX-ST) Fast Ethernet Stackable Hub with 12 100BASE-TX ports Slide in switch module with 1 100BASE-TX or 100BASE-FX port The 100BASE-TX module runs at 10 or 100 Mbps (via auto-detection). The 100BASE-TX and 100BASE-FX modules run at half or full duplex (via auto-negotiation).
Glossary 100BASE-TX IEEE’s specifications for 100 Mbps Ethernet using twisted-pair cable (100W Cat. 5 STP or UTP). The maximum length of cable for a point-to-point connection is 100 meters (328 feet). 100BASE-FX IEEE’s specifications for 100 Mbps Ethernet using multimode fiber optic cable. The 100BASE-FX Switch Module can be used to support fiber optic cable with SC or ST-type connectors. The maximum length for a point-to-point connection is 2 kilometers (1.24 miles) at full duplex, or 412 meters (0.
CheetaHub Power-3012A User’s Guide Ethernet A network communication system developed and standardized by DEC, Intel, and Xerox, using baseband transmission, CSMA/CD access and logical bus topology, and coaxial cable. The successor IEEE 802.3 standard provides for integration into the OSI model and extends the physical layer and media with repeaters and implementations that operate on fiber optics, baseband, and twisted-pair.
CheetaHub Power-3012A User’s Guide MDI Port (Medium Dependent Interface) MDI is the IEEE standard for the twisted-pair interface to 10BASE-T (or 100BASE-TX). This RJ-45 port can be used with straight-through cable to connect the hub to a network interconnection device, such as a switch. Pin-out assignments are shown in Appendix B.
CheetaHub Power-3012A User’s Guide Station Port The MDI-X port can be used for connecting the hub to any device that has a standard network interface (e.g., workstation, server or router). For Port 12, the selector switch must be set to MDI-X. (This port can also be connected to an MDI port on another compatible hub or a switch.) Unshielded Twisted-Pair (UTP) Cable composed of insulated wires twisted together to reduce electrical interference; used in common telephone cord.
Index applications connecting to a remote device · 3-4 connecting to the network backbone · 3-3 stack of hubs · 3-2 stand-alone configuration · 3-1 automatic partitioning, 1-3 automatic polarity detection, 1-3 fiber optics distance limit, 2-8 power loss, 2-8I installation mounting hubs in a rack, 2-3 requirements, 2-1 SmartExtender module, 2-7 stacking hubs without a rack, 2-2 installing the system, 2-1 C J certification, C-1 CheetaHub Power-3012A, 1-1 configuring the network, 3-1 connecting the hub sys
CheetaHub Power-3012A User’s Guide product support services, E-1 Accton offices, E-6 Bulletin Board Service, E-2 hardware repair service, E-1 Interactive Fast Fax, E-2 ordering information, E-6 technical support, E-3 providing power to the hub, 2-10 T troubleshooting, 2-11 configuration, A-3 hub indicators, A-1 installation, A-2 power and cooling, A-2 twisted-pair cable category 3,4,5, 2-4, A-2 R V RJ-45 daisy-chain port, 3-3 verifying port status, 2-11 verifying system operation, 2-12 S safety compli
EH3012A 150188-101 E0897-R01
