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Resumen del manual
Note the hubs follow Class I repeater standards when stacked. Fast EtherHub Installation Manual TROUBLESHOOTING This chapter contains information to help you solve problems. If these hubs are not functioning properly, make sure they were set up according to instructions in this manual. If the hubs don’t connect to the network: E Check the LINK/ACTIVITY LED lights on the front panel. If the LINK/ACTIVITY LED isn t lit, check all connections at the adapter and the hub. Make sure the adapter drivers are loaded. E Try another port on the hub. I Make sure the cable is installed properly. The network cable must be securely attached at all connection points. If the cable is properly attached but the problem persists, try a different cable. . Turn off the unit s power, wait a few seconds, and turn it back on. 13 Fast EtherHub Installation Manual Other Important Tips A Make sure no more than 100 meters of cable are used between the hub and the desktop. A Verify that the cabling type used is correct. (Category 5 UTP cable) A Make sure the network adapter cards installed in the workstations and cable connections are in good working condition. A Hubs connected via the backplane ports cannot be cascaded via the uplink port. When cascading hubs, limit the cascade to two hubs, and limit the interhub cabling to 5 meters. In a two-repeater topology, the maximum network diameter between end nodes is 205 meters. 14 Fast EtherHub Installation Manual PRODUCT SPECIFICATIONS Standard IEEE802.3u, 100BASE-TX Class I and II repeater 100BASE-TX UTP ports 8/12 Uplink port Hub port # 8/12 Cable Distance 5 meters for repeater to repeater 100 meters for repeater to station Cabling STP/UTP Category 5 wiring, 100-ohm impedance Expandability 32/48 ports in class I stackable mode LED indications Power (PWR) - Green Collision (COL) - Amber 8/12 Partition LEDs - Yellow 8/12 Link/Activity LEDs - Green Operating Temperature 0° -55°C Operating Humidity 5% - 95% Power Consumption 2.3A max at 100VAC, 0.95A at 240VAC Dimensions 435 x 210 x 42 mm 15 Fast EtherHub Installation Manual EMI Warning FCC Class A Certification 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. Warning: This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A digital device pursuant to Subpart B of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference, in which case the user, at his own expense, will be required to take whatever measures are required to correct the interference. You may use 100W Category 5 unshielded twisted-pair (UTP) or 100W Category 5 shielded twisted-pair (STP) cable for RJ-45 connections. 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 hub to a power outlet, connect the field ground lead on the tripole power plug to a valid earth ground line to prevent electrical hazards. 3. The connectors are not fo...
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